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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/platform_device.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
57#include <asm/uaccess.h>
58
59#include <acpi/acpi_drivers.h>
60
61MODULE_AUTHOR("John Belmonte");
62MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
63MODULE_LICENSE("GPL");
64
65/* Toshiba ACPI method paths */
66#define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM"
67#define TOSH_INTERFACE_1 "\\_SB_.VALD"
68#define TOSH_INTERFACE_2 "\\_SB_.VALZ"
69#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
70#define GHCI_METHOD ".GHCI"
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
82#define HCI_WORDS 6
83
84/* operations */
85#define HCI_SET 0xff00
86#define HCI_GET 0xfe00
87
88/* return codes */
89#define HCI_SUCCESS 0x0000
90#define HCI_FAILURE 0x1000
91#define HCI_NOT_SUPPORTED 0x8000
92#define HCI_EMPTY 0x8c00
93
94/* registers */
95#define HCI_FAN 0x0004
96#define HCI_SYSTEM_EVENT 0x0016
97#define HCI_VIDEO_OUT 0x001c
98#define HCI_HOTKEY_EVENT 0x001e
99#define HCI_LCD_BRIGHTNESS 0x002a
100#define HCI_WIRELESS 0x0056
101
102/* field definitions */
103#define HCI_LCD_BRIGHTNESS_BITS 3
104#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
105#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
106#define HCI_VIDEO_OUT_LCD 0x1
107#define HCI_VIDEO_OUT_CRT 0x2
108#define HCI_VIDEO_OUT_TV 0x4
109#define HCI_WIRELESS_KILL_SWITCH 0x01
110#define HCI_WIRELESS_BT_PRESENT 0x0f
111#define HCI_WIRELESS_BT_ATTACH 0x40
112#define HCI_WIRELESS_BT_POWER 0x80
113
114static const struct acpi_device_id toshiba_device_ids[] = {
115 {"TOS6200", 0},
116 {"TOS6208", 0},
117 {"TOS1900", 0},
118 {"", 0},
119};
120MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
121
122static const struct key_entry toshiba_acpi_keymap[] __initconst = {
123 { KE_KEY, 0x101, { KEY_MUTE } },
124 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
125 { KE_KEY, 0x103, { KEY_ZOOMIN } },
126 { KE_KEY, 0x13b, { KEY_COFFEE } },
127 { KE_KEY, 0x13c, { KEY_BATTERY } },
128 { KE_KEY, 0x13d, { KEY_SLEEP } },
129 { KE_KEY, 0x13e, { KEY_SUSPEND } },
130 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
131 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
132 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
133 { KE_KEY, 0x142, { KEY_WLAN } },
134 { KE_KEY, 0x143, { KEY_PROG1 } },
135 { KE_KEY, 0x17f, { KEY_FN } },
136 { KE_KEY, 0xb05, { KEY_PROG2 } },
137 { KE_KEY, 0xb06, { KEY_WWW } },
138 { KE_KEY, 0xb07, { KEY_MAIL } },
139 { KE_KEY, 0xb30, { KEY_STOP } },
140 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
141 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
142 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
143 { KE_KEY, 0xb5a, { KEY_MEDIA } },
144 { KE_END, 0 },
145};
146
147/* utility
148 */
149
150static __inline__ void _set_bit(u32 * word, u32 mask, int value)
151{
152 *word = (*word & ~mask) | (mask * value);
153}
154
155/* acpi interface wrappers
156 */
157
158static int is_valid_acpi_path(const char *methodName)
159{
160 acpi_handle handle;
161 acpi_status status;
162
163 status = acpi_get_handle(NULL, (char *)methodName, &handle);
164 return !ACPI_FAILURE(status);
165}
166
167static int write_acpi_int(const char *methodName, int val)
168{
169 struct acpi_object_list params;
170 union acpi_object in_objs[1];
171 acpi_status status;
172
173 params.count = ARRAY_SIZE(in_objs);
174 params.pointer = in_objs;
175 in_objs[0].type = ACPI_TYPE_INTEGER;
176 in_objs[0].integer.value = val;
177
178 status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL);
179 return (status == AE_OK);
180}
181
182#if 0
183static int read_acpi_int(const char *methodName, int *pVal)
184{
185 struct acpi_buffer results;
186 union acpi_object out_objs[1];
187 acpi_status status;
188
189 results.length = sizeof(out_objs);
190 results.pointer = out_objs;
191
192 status = acpi_evaluate_object(0, (char *)methodName, 0, &results);
193 *pVal = out_objs[0].integer.value;
194
195 return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER);
196}
197#endif
198
199static const char *method_hci /*= 0*/ ;
200
201/* Perform a raw HCI call. Here we don't care about input or output buffer
202 * format.
203 */
204static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
205{
206 struct acpi_object_list params;
207 union acpi_object in_objs[HCI_WORDS];
208 struct acpi_buffer results;
209 union acpi_object out_objs[HCI_WORDS + 1];
210 acpi_status status;
211 int i;
212
213 params.count = HCI_WORDS;
214 params.pointer = in_objs;
215 for (i = 0; i < HCI_WORDS; ++i) {
216 in_objs[i].type = ACPI_TYPE_INTEGER;
217 in_objs[i].integer.value = in[i];
218 }
219
220 results.length = sizeof(out_objs);
221 results.pointer = out_objs;
222
223 status = acpi_evaluate_object(NULL, (char *)method_hci, ¶ms,
224 &results);
225 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
226 for (i = 0; i < out_objs->package.count; ++i) {
227 out[i] = out_objs->package.elements[i].integer.value;
228 }
229 }
230
231 return status;
232}
233
234/* common hci tasks (get or set one or two value)
235 *
236 * In addition to the ACPI status, the HCI system returns a result which
237 * may be useful (such as "not supported").
238 */
239
240static acpi_status hci_write1(u32 reg, u32 in1, u32 * result)
241{
242 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
243 u32 out[HCI_WORDS];
244 acpi_status status = hci_raw(in, out);
245 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
246 return status;
247}
248
249static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result)
250{
251 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
252 u32 out[HCI_WORDS];
253 acpi_status status = hci_raw(in, out);
254 *out1 = out[2];
255 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
256 return status;
257}
258
259static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result)
260{
261 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
262 u32 out[HCI_WORDS];
263 acpi_status status = hci_raw(in, out);
264 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
265 return status;
266}
267
268static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
269{
270 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
271 u32 out[HCI_WORDS];
272 acpi_status status = hci_raw(in, out);
273 *out1 = out[2];
274 *out2 = out[3];
275 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
276 return status;
277}
278
279struct toshiba_acpi_dev {
280 struct platform_device *p_dev;
281 struct rfkill *bt_rfk;
282 struct input_dev *hotkey_dev;
283 int illumination_installed;
284 acpi_handle handle;
285
286 const char *bt_name;
287
288 struct mutex mutex;
289};
290
291/* Illumination support */
292static int toshiba_illumination_available(void)
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(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(in, out);
306 return 1;
307}
308
309static void toshiba_illumination_set(struct led_classdev *cdev,
310 enum led_brightness brightness)
311{
312 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
313 u32 out[HCI_WORDS];
314 acpi_status status;
315
316 /* First request : initialize communication. */
317 in[0] = 0xf100;
318 status = hci_raw(in, out);
319 if (ACPI_FAILURE(status)) {
320 pr_info("Illumination device not available\n");
321 return;
322 }
323
324 if (brightness) {
325 /* Switch the illumination on */
326 in[0] = 0xf400;
327 in[1] = 0x14e;
328 in[2] = 1;
329 status = hci_raw(in, out);
330 if (ACPI_FAILURE(status)) {
331 pr_info("ACPI call for illumination failed\n");
332 return;
333 }
334 } else {
335 /* Switch the illumination off */
336 in[0] = 0xf400;
337 in[1] = 0x14e;
338 in[2] = 0;
339 status = hci_raw(in, out);
340 if (ACPI_FAILURE(status)) {
341 pr_info("ACPI call for illumination failed.\n");
342 return;
343 }
344 }
345
346 /* Last request : close communication. */
347 in[0] = 0xf200;
348 in[1] = 0;
349 in[2] = 0;
350 hci_raw(in, out);
351}
352
353static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
354{
355 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
356 u32 out[HCI_WORDS];
357 acpi_status status;
358 enum led_brightness result;
359
360 /*Â First request : initialize communication. */
361 in[0] = 0xf100;
362 status = hci_raw(in, out);
363 if (ACPI_FAILURE(status)) {
364 pr_info("Illumination device not available\n");
365 return LED_OFF;
366 }
367
368 /* Check the illumination */
369 in[0] = 0xf300;
370 in[1] = 0x14e;
371 status = hci_raw(in, out);
372 if (ACPI_FAILURE(status)) {
373 pr_info("ACPI call for illumination failed.\n");
374 return LED_OFF;
375 }
376
377 result = out[2] ? LED_FULL : LED_OFF;
378
379 /* Last request : close communication. */
380 in[0] = 0xf200;
381 in[1] = 0;
382 in[2] = 0;
383 hci_raw(in, out);
384
385 return result;
386}
387
388static struct led_classdev toshiba_led = {
389 .name = "toshiba::illumination",
390 .max_brightness = 1,
391 .brightness_set = toshiba_illumination_set,
392 .brightness_get = toshiba_illumination_get,
393};
394
395static struct toshiba_acpi_dev toshiba_acpi = {
396 .bt_name = "Toshiba Bluetooth",
397};
398
399/* Bluetooth rfkill handlers */
400
401static u32 hci_get_bt_present(bool *present)
402{
403 u32 hci_result;
404 u32 value, value2;
405
406 value = 0;
407 value2 = 0;
408 hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
409 if (hci_result == HCI_SUCCESS)
410 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
411
412 return hci_result;
413}
414
415static u32 hci_get_radio_state(bool *radio_state)
416{
417 u32 hci_result;
418 u32 value, value2;
419
420 value = 0;
421 value2 = 0x0001;
422 hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
423
424 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
425 return hci_result;
426}
427
428static int bt_rfkill_set_block(void *data, bool blocked)
429{
430 struct toshiba_acpi_dev *dev = data;
431 u32 result1, result2;
432 u32 value;
433 int err;
434 bool radio_state;
435
436 value = (blocked == false);
437
438 mutex_lock(&dev->mutex);
439 if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) {
440 err = -EBUSY;
441 goto out;
442 }
443
444 if (!radio_state) {
445 err = 0;
446 goto out;
447 }
448
449 hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
450 hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
451
452 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
453 err = -EBUSY;
454 else
455 err = 0;
456 out:
457 mutex_unlock(&dev->mutex);
458 return err;
459}
460
461static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
462{
463 bool new_rfk_state;
464 bool value;
465 u32 hci_result;
466 struct toshiba_acpi_dev *dev = data;
467
468 mutex_lock(&dev->mutex);
469
470 hci_result = hci_get_radio_state(&value);
471 if (hci_result != HCI_SUCCESS) {
472 /* Can't do anything useful */
473 mutex_unlock(&dev->mutex);
474 return;
475 }
476
477 new_rfk_state = value;
478
479 mutex_unlock(&dev->mutex);
480
481 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
482 bt_rfkill_set_block(data, true);
483}
484
485static const struct rfkill_ops toshiba_rfk_ops = {
486 .set_block = bt_rfkill_set_block,
487 .poll = bt_rfkill_poll,
488};
489
490static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
491static struct backlight_device *toshiba_backlight_device;
492static int force_fan;
493static int last_key_event;
494static int key_event_valid;
495
496static int get_lcd(struct backlight_device *bd)
497{
498 u32 hci_result;
499 u32 value;
500
501 hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
502 if (hci_result == HCI_SUCCESS) {
503 return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
504 } else
505 return -EFAULT;
506}
507
508static int lcd_proc_show(struct seq_file *m, void *v)
509{
510 int value = get_lcd(NULL);
511
512 if (value >= 0) {
513 seq_printf(m, "brightness: %d\n", value);
514 seq_printf(m, "brightness_levels: %d\n",
515 HCI_LCD_BRIGHTNESS_LEVELS);
516 } else {
517 pr_err("Error reading LCD brightness\n");
518 }
519
520 return 0;
521}
522
523static int lcd_proc_open(struct inode *inode, struct file *file)
524{
525 return single_open(file, lcd_proc_show, NULL);
526}
527
528static int set_lcd(int value)
529{
530 u32 hci_result;
531
532 value = value << HCI_LCD_BRIGHTNESS_SHIFT;
533 hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result);
534 if (hci_result != HCI_SUCCESS)
535 return -EFAULT;
536
537 return 0;
538}
539
540static int set_lcd_status(struct backlight_device *bd)
541{
542 return set_lcd(bd->props.brightness);
543}
544
545static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
546 size_t count, loff_t *pos)
547{
548 char cmd[42];
549 size_t len;
550 int value;
551 int ret;
552
553 len = min(count, sizeof(cmd) - 1);
554 if (copy_from_user(cmd, buf, len))
555 return -EFAULT;
556 cmd[len] = '\0';
557
558 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
559 value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
560 ret = set_lcd(value);
561 if (ret == 0)
562 ret = count;
563 } else {
564 ret = -EINVAL;
565 }
566 return ret;
567}
568
569static const struct file_operations lcd_proc_fops = {
570 .owner = THIS_MODULE,
571 .open = lcd_proc_open,
572 .read = seq_read,
573 .llseek = seq_lseek,
574 .release = single_release,
575 .write = lcd_proc_write,
576};
577
578static int video_proc_show(struct seq_file *m, void *v)
579{
580 u32 hci_result;
581 u32 value;
582
583 hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
584 if (hci_result == HCI_SUCCESS) {
585 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
586 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
587 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
588 seq_printf(m, "lcd_out: %d\n", is_lcd);
589 seq_printf(m, "crt_out: %d\n", is_crt);
590 seq_printf(m, "tv_out: %d\n", is_tv);
591 } else {
592 pr_err("Error reading video out status\n");
593 }
594
595 return 0;
596}
597
598static int video_proc_open(struct inode *inode, struct file *file)
599{
600 return single_open(file, video_proc_show, NULL);
601}
602
603static ssize_t video_proc_write(struct file *file, const char __user *buf,
604 size_t count, loff_t *pos)
605{
606 char *cmd, *buffer;
607 int value;
608 int remain = count;
609 int lcd_out = -1;
610 int crt_out = -1;
611 int tv_out = -1;
612 u32 hci_result;
613 u32 video_out;
614
615 cmd = kmalloc(count + 1, GFP_KERNEL);
616 if (!cmd)
617 return -ENOMEM;
618 if (copy_from_user(cmd, buf, count)) {
619 kfree(cmd);
620 return -EFAULT;
621 }
622 cmd[count] = '\0';
623
624 buffer = cmd;
625
626 /* scan expression. Multiple expressions may be delimited with ;
627 *
628 * NOTE: to keep scanning simple, invalid fields are ignored
629 */
630 while (remain) {
631 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
632 lcd_out = value & 1;
633 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
634 crt_out = value & 1;
635 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
636 tv_out = value & 1;
637 /* advance to one character past the next ; */
638 do {
639 ++buffer;
640 --remain;
641 }
642 while (remain && *(buffer - 1) != ';');
643 }
644
645 kfree(cmd);
646
647 hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
648 if (hci_result == HCI_SUCCESS) {
649 unsigned int new_video_out = video_out;
650 if (lcd_out != -1)
651 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
652 if (crt_out != -1)
653 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
654 if (tv_out != -1)
655 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
656 /* To avoid unnecessary video disruption, only write the new
657 * video setting if something changed. */
658 if (new_video_out != video_out)
659 write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
660 } else {
661 return -EFAULT;
662 }
663
664 return count;
665}
666
667static const struct file_operations video_proc_fops = {
668 .owner = THIS_MODULE,
669 .open = video_proc_open,
670 .read = seq_read,
671 .llseek = seq_lseek,
672 .release = single_release,
673 .write = video_proc_write,
674};
675
676static int fan_proc_show(struct seq_file *m, void *v)
677{
678 u32 hci_result;
679 u32 value;
680
681 hci_read1(HCI_FAN, &value, &hci_result);
682 if (hci_result == HCI_SUCCESS) {
683 seq_printf(m, "running: %d\n", (value > 0));
684 seq_printf(m, "force_on: %d\n", force_fan);
685 } else {
686 pr_err("Error reading fan status\n");
687 }
688
689 return 0;
690}
691
692static int fan_proc_open(struct inode *inode, struct file *file)
693{
694 return single_open(file, fan_proc_show, NULL);
695}
696
697static ssize_t fan_proc_write(struct file *file, const char __user *buf,
698 size_t count, loff_t *pos)
699{
700 char cmd[42];
701 size_t len;
702 int value;
703 u32 hci_result;
704
705 len = min(count, sizeof(cmd) - 1);
706 if (copy_from_user(cmd, buf, len))
707 return -EFAULT;
708 cmd[len] = '\0';
709
710 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
711 value >= 0 && value <= 1) {
712 hci_write1(HCI_FAN, value, &hci_result);
713 if (hci_result != HCI_SUCCESS)
714 return -EFAULT;
715 else
716 force_fan = value;
717 } else {
718 return -EINVAL;
719 }
720
721 return count;
722}
723
724static const struct file_operations fan_proc_fops = {
725 .owner = THIS_MODULE,
726 .open = fan_proc_open,
727 .read = seq_read,
728 .llseek = seq_lseek,
729 .release = single_release,
730 .write = fan_proc_write,
731};
732
733static int keys_proc_show(struct seq_file *m, void *v)
734{
735 u32 hci_result;
736 u32 value;
737
738 if (!key_event_valid) {
739 hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
740 if (hci_result == HCI_SUCCESS) {
741 key_event_valid = 1;
742 last_key_event = value;
743 } else if (hci_result == HCI_EMPTY) {
744 /* better luck next time */
745 } else if (hci_result == HCI_NOT_SUPPORTED) {
746 /* This is a workaround for an unresolved issue on
747 * some machines where system events sporadically
748 * become disabled. */
749 hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
750 pr_notice("Re-enabled hotkeys\n");
751 } else {
752 pr_err("Error reading hotkey status\n");
753 goto end;
754 }
755 }
756
757 seq_printf(m, "hotkey_ready: %d\n", key_event_valid);
758 seq_printf(m, "hotkey: 0x%04x\n", last_key_event);
759end:
760 return 0;
761}
762
763static int keys_proc_open(struct inode *inode, struct file *file)
764{
765 return single_open(file, keys_proc_show, NULL);
766}
767
768static ssize_t keys_proc_write(struct file *file, const char __user *buf,
769 size_t count, loff_t *pos)
770{
771 char cmd[42];
772 size_t len;
773 int value;
774
775 len = min(count, sizeof(cmd) - 1);
776 if (copy_from_user(cmd, buf, len))
777 return -EFAULT;
778 cmd[len] = '\0';
779
780 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
781 key_event_valid = 0;
782 } else {
783 return -EINVAL;
784 }
785
786 return count;
787}
788
789static const struct file_operations keys_proc_fops = {
790 .owner = THIS_MODULE,
791 .open = keys_proc_open,
792 .read = seq_read,
793 .llseek = seq_lseek,
794 .release = single_release,
795 .write = keys_proc_write,
796};
797
798static int version_proc_show(struct seq_file *m, void *v)
799{
800 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
801 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
802 return 0;
803}
804
805static int version_proc_open(struct inode *inode, struct file *file)
806{
807 return single_open(file, version_proc_show, PDE(inode)->data);
808}
809
810static const struct file_operations version_proc_fops = {
811 .owner = THIS_MODULE,
812 .open = version_proc_open,
813 .read = seq_read,
814 .llseek = seq_lseek,
815 .release = single_release,
816};
817
818/* proc and module init
819 */
820
821#define PROC_TOSHIBA "toshiba"
822
823static void __init create_toshiba_proc_entries(void)
824{
825 proc_create("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, &lcd_proc_fops);
826 proc_create("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, &video_proc_fops);
827 proc_create("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, &fan_proc_fops);
828 proc_create("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, &keys_proc_fops);
829 proc_create("version", S_IRUGO, toshiba_proc_dir, &version_proc_fops);
830}
831
832static void remove_toshiba_proc_entries(void)
833{
834 remove_proc_entry("lcd", toshiba_proc_dir);
835 remove_proc_entry("video", toshiba_proc_dir);
836 remove_proc_entry("fan", toshiba_proc_dir);
837 remove_proc_entry("keys", toshiba_proc_dir);
838 remove_proc_entry("version", toshiba_proc_dir);
839}
840
841static const struct backlight_ops toshiba_backlight_data = {
842 .get_brightness = get_lcd,
843 .update_status = set_lcd_status,
844};
845
846static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
847{
848 u32 hci_result, value;
849
850 if (event != 0x80)
851 return;
852 do {
853 hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
854 if (hci_result == HCI_SUCCESS) {
855 if (value == 0x100)
856 continue;
857 /* act on key press; ignore key release */
858 if (value & 0x80)
859 continue;
860
861 if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
862 value, 1, true)) {
863 pr_info("Unknown key %x\n",
864 value);
865 }
866 } else if (hci_result == HCI_NOT_SUPPORTED) {
867 /* This is a workaround for an unresolved issue on
868 * some machines where system events sporadically
869 * become disabled. */
870 hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
871 pr_notice("Re-enabled hotkeys\n");
872 }
873 } while (hci_result != HCI_EMPTY);
874}
875
876static int __init toshiba_acpi_setup_keyboard(char *device)
877{
878 acpi_status status;
879 int error;
880
881 status = acpi_get_handle(NULL, device, &toshiba_acpi.handle);
882 if (ACPI_FAILURE(status)) {
883 pr_info("Unable to get notification device\n");
884 return -ENODEV;
885 }
886
887 toshiba_acpi.hotkey_dev = input_allocate_device();
888 if (!toshiba_acpi.hotkey_dev) {
889 pr_info("Unable to register input device\n");
890 return -ENOMEM;
891 }
892
893 toshiba_acpi.hotkey_dev->name = "Toshiba input device";
894 toshiba_acpi.hotkey_dev->phys = device;
895 toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST;
896
897 error = sparse_keymap_setup(toshiba_acpi.hotkey_dev,
898 toshiba_acpi_keymap, NULL);
899 if (error)
900 goto err_free_dev;
901
902 status = acpi_install_notify_handler(toshiba_acpi.handle,
903 ACPI_DEVICE_NOTIFY, toshiba_acpi_notify, NULL);
904 if (ACPI_FAILURE(status)) {
905 pr_info("Unable to install hotkey notification\n");
906 error = -ENODEV;
907 goto err_free_keymap;
908 }
909
910 status = acpi_evaluate_object(toshiba_acpi.handle, "ENAB", NULL, NULL);
911 if (ACPI_FAILURE(status)) {
912 pr_info("Unable to enable hotkeys\n");
913 error = -ENODEV;
914 goto err_remove_notify;
915 }
916
917 error = input_register_device(toshiba_acpi.hotkey_dev);
918 if (error) {
919 pr_info("Unable to register input device\n");
920 goto err_remove_notify;
921 }
922
923 return 0;
924
925 err_remove_notify:
926 acpi_remove_notify_handler(toshiba_acpi.handle,
927 ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
928 err_free_keymap:
929 sparse_keymap_free(toshiba_acpi.hotkey_dev);
930 err_free_dev:
931 input_free_device(toshiba_acpi.hotkey_dev);
932 toshiba_acpi.hotkey_dev = NULL;
933 return error;
934}
935
936static void toshiba_acpi_exit(void)
937{
938 if (toshiba_acpi.hotkey_dev) {
939 acpi_remove_notify_handler(toshiba_acpi.handle,
940 ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
941 sparse_keymap_free(toshiba_acpi.hotkey_dev);
942 input_unregister_device(toshiba_acpi.hotkey_dev);
943 }
944
945 if (toshiba_acpi.bt_rfk) {
946 rfkill_unregister(toshiba_acpi.bt_rfk);
947 rfkill_destroy(toshiba_acpi.bt_rfk);
948 }
949
950 if (toshiba_backlight_device)
951 backlight_device_unregister(toshiba_backlight_device);
952
953 remove_toshiba_proc_entries();
954
955 if (toshiba_proc_dir)
956 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
957
958 if (toshiba_acpi.illumination_installed)
959 led_classdev_unregister(&toshiba_led);
960
961 platform_device_unregister(toshiba_acpi.p_dev);
962
963 return;
964}
965
966static int __init toshiba_acpi_init(void)
967{
968 u32 hci_result;
969 bool bt_present;
970 int ret = 0;
971 struct backlight_properties props;
972
973 if (acpi_disabled)
974 return -ENODEV;
975
976 /* simple device detection: look for HCI method */
977 if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
978 method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
979 if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
980 pr_info("Unable to activate hotkeys\n");
981 } else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
982 method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
983 if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
984 pr_info("Unable to activate hotkeys\n");
985 } else
986 return -ENODEV;
987
988 pr_info("Toshiba Laptop ACPI Extras version %s\n",
989 TOSHIBA_ACPI_VERSION);
990 pr_info(" HCI method: %s\n", method_hci);
991
992 mutex_init(&toshiba_acpi.mutex);
993
994 toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi",
995 -1, NULL, 0);
996 if (IS_ERR(toshiba_acpi.p_dev)) {
997 ret = PTR_ERR(toshiba_acpi.p_dev);
998 pr_err("unable to register platform device\n");
999 toshiba_acpi.p_dev = NULL;
1000 toshiba_acpi_exit();
1001 return ret;
1002 }
1003
1004 force_fan = 0;
1005 key_event_valid = 0;
1006
1007 /* enable event fifo */
1008 hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
1009
1010 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1011 if (!toshiba_proc_dir) {
1012 toshiba_acpi_exit();
1013 return -ENODEV;
1014 } else {
1015 create_toshiba_proc_entries();
1016 }
1017
1018 props.type = BACKLIGHT_PLATFORM;
1019 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1020 toshiba_backlight_device = backlight_device_register("toshiba",
1021 &toshiba_acpi.p_dev->dev,
1022 NULL,
1023 &toshiba_backlight_data,
1024 &props);
1025 if (IS_ERR(toshiba_backlight_device)) {
1026 ret = PTR_ERR(toshiba_backlight_device);
1027
1028 pr_err("Could not register toshiba backlight device\n");
1029 toshiba_backlight_device = NULL;
1030 toshiba_acpi_exit();
1031 return ret;
1032 }
1033
1034 /* Register rfkill switch for Bluetooth */
1035 if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
1036 toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name,
1037 &toshiba_acpi.p_dev->dev,
1038 RFKILL_TYPE_BLUETOOTH,
1039 &toshiba_rfk_ops,
1040 &toshiba_acpi);
1041 if (!toshiba_acpi.bt_rfk) {
1042 pr_err("unable to allocate rfkill device\n");
1043 toshiba_acpi_exit();
1044 return -ENOMEM;
1045 }
1046
1047 ret = rfkill_register(toshiba_acpi.bt_rfk);
1048 if (ret) {
1049 pr_err("unable to register rfkill device\n");
1050 rfkill_destroy(toshiba_acpi.bt_rfk);
1051 toshiba_acpi_exit();
1052 return ret;
1053 }
1054 }
1055
1056 toshiba_acpi.illumination_installed = 0;
1057 if (toshiba_illumination_available()) {
1058 if (!led_classdev_register(&(toshiba_acpi.p_dev->dev),
1059 &toshiba_led))
1060 toshiba_acpi.illumination_installed = 1;
1061 }
1062
1063 return 0;
1064}
1065
1066module_init(toshiba_acpi_init);
1067module_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);