diff options
Diffstat (limited to 'drivers/acpi/toshiba_acpi.c')
-rw-r--r-- | drivers/acpi/toshiba_acpi.c | 863 |
1 files changed, 0 insertions, 863 deletions
diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c deleted file mode 100644 index 40e60fc2e596..000000000000 --- a/drivers/acpi/toshiba_acpi.c +++ /dev/null | |||
@@ -1,863 +0,0 @@ | |||
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 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License as published by | ||
10 | * the Free Software Foundation; either version 2 of the License, or | ||
11 | * (at your option) any later version. | ||
12 | * | ||
13 | * This program is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 | * GNU General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 | * | ||
22 | * | ||
23 | * The devolpment page for this driver is located at | ||
24 | * http://memebeam.org/toys/ToshibaAcpiDriver. | ||
25 | * | ||
26 | * Credits: | ||
27 | * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse | ||
28 | * engineering the Windows drivers | ||
29 | * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5 | ||
30 | * Rob Miller - TV out and hotkeys help | ||
31 | * | ||
32 | * | ||
33 | * TODO | ||
34 | * | ||
35 | */ | ||
36 | |||
37 | #define TOSHIBA_ACPI_VERSION "0.19" | ||
38 | #define PROC_INTERFACE_VERSION 1 | ||
39 | |||
40 | #include <linux/kernel.h> | ||
41 | #include <linux/module.h> | ||
42 | #include <linux/init.h> | ||
43 | #include <linux/types.h> | ||
44 | #include <linux/proc_fs.h> | ||
45 | #include <linux/backlight.h> | ||
46 | #include <linux/platform_device.h> | ||
47 | #include <linux/rfkill.h> | ||
48 | #include <linux/input-polldev.h> | ||
49 | |||
50 | #include <asm/uaccess.h> | ||
51 | |||
52 | #include <acpi/acpi_drivers.h> | ||
53 | |||
54 | MODULE_AUTHOR("John Belmonte"); | ||
55 | MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver"); | ||
56 | MODULE_LICENSE("GPL"); | ||
57 | |||
58 | #define MY_LOGPREFIX "toshiba_acpi: " | ||
59 | #define MY_ERR KERN_ERR MY_LOGPREFIX | ||
60 | #define MY_NOTICE KERN_NOTICE MY_LOGPREFIX | ||
61 | #define MY_INFO KERN_INFO MY_LOGPREFIX | ||
62 | |||
63 | /* Toshiba ACPI method paths */ | ||
64 | #define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM" | ||
65 | #define METHOD_HCI_1 "\\_SB_.VALD.GHCI" | ||
66 | #define METHOD_HCI_2 "\\_SB_.VALZ.GHCI" | ||
67 | #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX" | ||
68 | |||
69 | /* Toshiba HCI interface definitions | ||
70 | * | ||
71 | * HCI is Toshiba's "Hardware Control Interface" which is supposed to | ||
72 | * be uniform across all their models. Ideally we would just call | ||
73 | * dedicated ACPI methods instead of using this primitive interface. | ||
74 | * However the ACPI methods seem to be incomplete in some areas (for | ||
75 | * example they allow setting, but not reading, the LCD brightness value), | ||
76 | * so this is still useful. | ||
77 | */ | ||
78 | |||
79 | #define HCI_WORDS 6 | ||
80 | |||
81 | /* operations */ | ||
82 | #define HCI_SET 0xff00 | ||
83 | #define HCI_GET 0xfe00 | ||
84 | |||
85 | /* return codes */ | ||
86 | #define HCI_SUCCESS 0x0000 | ||
87 | #define HCI_FAILURE 0x1000 | ||
88 | #define HCI_NOT_SUPPORTED 0x8000 | ||
89 | #define HCI_EMPTY 0x8c00 | ||
90 | |||
91 | /* registers */ | ||
92 | #define HCI_FAN 0x0004 | ||
93 | #define HCI_SYSTEM_EVENT 0x0016 | ||
94 | #define HCI_VIDEO_OUT 0x001c | ||
95 | #define HCI_HOTKEY_EVENT 0x001e | ||
96 | #define HCI_LCD_BRIGHTNESS 0x002a | ||
97 | #define HCI_WIRELESS 0x0056 | ||
98 | |||
99 | /* field definitions */ | ||
100 | #define HCI_LCD_BRIGHTNESS_BITS 3 | ||
101 | #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS) | ||
102 | #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS) | ||
103 | #define HCI_VIDEO_OUT_LCD 0x1 | ||
104 | #define HCI_VIDEO_OUT_CRT 0x2 | ||
105 | #define HCI_VIDEO_OUT_TV 0x4 | ||
106 | #define HCI_WIRELESS_KILL_SWITCH 0x01 | ||
107 | #define HCI_WIRELESS_BT_PRESENT 0x0f | ||
108 | #define HCI_WIRELESS_BT_ATTACH 0x40 | ||
109 | #define HCI_WIRELESS_BT_POWER 0x80 | ||
110 | |||
111 | static const struct acpi_device_id toshiba_device_ids[] = { | ||
112 | {"TOS6200", 0}, | ||
113 | {"TOS6208", 0}, | ||
114 | {"TOS1900", 0}, | ||
115 | {"", 0}, | ||
116 | }; | ||
117 | MODULE_DEVICE_TABLE(acpi, toshiba_device_ids); | ||
118 | |||
119 | /* utility | ||
120 | */ | ||
121 | |||
122 | static __inline__ void _set_bit(u32 * word, u32 mask, int value) | ||
123 | { | ||
124 | *word = (*word & ~mask) | (mask * value); | ||
125 | } | ||
126 | |||
127 | /* acpi interface wrappers | ||
128 | */ | ||
129 | |||
130 | static int is_valid_acpi_path(const char *methodName) | ||
131 | { | ||
132 | acpi_handle handle; | ||
133 | acpi_status status; | ||
134 | |||
135 | status = acpi_get_handle(NULL, (char *)methodName, &handle); | ||
136 | return !ACPI_FAILURE(status); | ||
137 | } | ||
138 | |||
139 | static int write_acpi_int(const char *methodName, int val) | ||
140 | { | ||
141 | struct acpi_object_list params; | ||
142 | union acpi_object in_objs[1]; | ||
143 | acpi_status status; | ||
144 | |||
145 | params.count = ARRAY_SIZE(in_objs); | ||
146 | params.pointer = in_objs; | ||
147 | in_objs[0].type = ACPI_TYPE_INTEGER; | ||
148 | in_objs[0].integer.value = val; | ||
149 | |||
150 | status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL); | ||
151 | return (status == AE_OK); | ||
152 | } | ||
153 | |||
154 | #if 0 | ||
155 | static int read_acpi_int(const char *methodName, int *pVal) | ||
156 | { | ||
157 | struct acpi_buffer results; | ||
158 | union acpi_object out_objs[1]; | ||
159 | acpi_status status; | ||
160 | |||
161 | results.length = sizeof(out_objs); | ||
162 | results.pointer = out_objs; | ||
163 | |||
164 | status = acpi_evaluate_object(0, (char *)methodName, 0, &results); | ||
165 | *pVal = out_objs[0].integer.value; | ||
166 | |||
167 | return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER); | ||
168 | } | ||
169 | #endif | ||
170 | |||
171 | static const char *method_hci /*= 0*/ ; | ||
172 | |||
173 | /* Perform a raw HCI call. Here we don't care about input or output buffer | ||
174 | * format. | ||
175 | */ | ||
176 | static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS]) | ||
177 | { | ||
178 | struct acpi_object_list params; | ||
179 | union acpi_object in_objs[HCI_WORDS]; | ||
180 | struct acpi_buffer results; | ||
181 | union acpi_object out_objs[HCI_WORDS + 1]; | ||
182 | acpi_status status; | ||
183 | int i; | ||
184 | |||
185 | params.count = HCI_WORDS; | ||
186 | params.pointer = in_objs; | ||
187 | for (i = 0; i < HCI_WORDS; ++i) { | ||
188 | in_objs[i].type = ACPI_TYPE_INTEGER; | ||
189 | in_objs[i].integer.value = in[i]; | ||
190 | } | ||
191 | |||
192 | results.length = sizeof(out_objs); | ||
193 | results.pointer = out_objs; | ||
194 | |||
195 | status = acpi_evaluate_object(NULL, (char *)method_hci, ¶ms, | ||
196 | &results); | ||
197 | if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) { | ||
198 | for (i = 0; i < out_objs->package.count; ++i) { | ||
199 | out[i] = out_objs->package.elements[i].integer.value; | ||
200 | } | ||
201 | } | ||
202 | |||
203 | return status; | ||
204 | } | ||
205 | |||
206 | /* common hci tasks (get or set one or two value) | ||
207 | * | ||
208 | * In addition to the ACPI status, the HCI system returns a result which | ||
209 | * may be useful (such as "not supported"). | ||
210 | */ | ||
211 | |||
212 | static acpi_status hci_write1(u32 reg, u32 in1, u32 * result) | ||
213 | { | ||
214 | u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 }; | ||
215 | u32 out[HCI_WORDS]; | ||
216 | acpi_status status = hci_raw(in, out); | ||
217 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | ||
218 | return status; | ||
219 | } | ||
220 | |||
221 | static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result) | ||
222 | { | ||
223 | u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 }; | ||
224 | u32 out[HCI_WORDS]; | ||
225 | acpi_status status = hci_raw(in, out); | ||
226 | *out1 = out[2]; | ||
227 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | ||
228 | return status; | ||
229 | } | ||
230 | |||
231 | static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result) | ||
232 | { | ||
233 | u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 }; | ||
234 | u32 out[HCI_WORDS]; | ||
235 | acpi_status status = hci_raw(in, out); | ||
236 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | ||
237 | return status; | ||
238 | } | ||
239 | |||
240 | static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result) | ||
241 | { | ||
242 | u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 }; | ||
243 | u32 out[HCI_WORDS]; | ||
244 | acpi_status status = hci_raw(in, out); | ||
245 | *out1 = out[2]; | ||
246 | *out2 = out[3]; | ||
247 | *result = (status == AE_OK) ? out[0] : HCI_FAILURE; | ||
248 | return status; | ||
249 | } | ||
250 | |||
251 | struct toshiba_acpi_dev { | ||
252 | struct platform_device *p_dev; | ||
253 | struct rfkill *rfk_dev; | ||
254 | struct input_polled_dev *poll_dev; | ||
255 | |||
256 | const char *bt_name; | ||
257 | const char *rfk_name; | ||
258 | |||
259 | bool last_rfk_state; | ||
260 | |||
261 | struct mutex mutex; | ||
262 | }; | ||
263 | |||
264 | static struct toshiba_acpi_dev toshiba_acpi = { | ||
265 | .bt_name = "Toshiba Bluetooth", | ||
266 | .rfk_name = "Toshiba RFKill Switch", | ||
267 | .last_rfk_state = false, | ||
268 | }; | ||
269 | |||
270 | /* Bluetooth rfkill handlers */ | ||
271 | |||
272 | static u32 hci_get_bt_present(bool *present) | ||
273 | { | ||
274 | u32 hci_result; | ||
275 | u32 value, value2; | ||
276 | |||
277 | value = 0; | ||
278 | value2 = 0; | ||
279 | hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); | ||
280 | if (hci_result == HCI_SUCCESS) | ||
281 | *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false; | ||
282 | |||
283 | return hci_result; | ||
284 | } | ||
285 | |||
286 | static u32 hci_get_bt_on(bool *on) | ||
287 | { | ||
288 | u32 hci_result; | ||
289 | u32 value, value2; | ||
290 | |||
291 | value = 0; | ||
292 | value2 = 0x0001; | ||
293 | hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); | ||
294 | if (hci_result == HCI_SUCCESS) | ||
295 | *on = (value & HCI_WIRELESS_BT_POWER) && | ||
296 | (value & HCI_WIRELESS_BT_ATTACH); | ||
297 | |||
298 | return hci_result; | ||
299 | } | ||
300 | |||
301 | static u32 hci_get_radio_state(bool *radio_state) | ||
302 | { | ||
303 | u32 hci_result; | ||
304 | u32 value, value2; | ||
305 | |||
306 | value = 0; | ||
307 | value2 = 0x0001; | ||
308 | hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); | ||
309 | |||
310 | *radio_state = value & HCI_WIRELESS_KILL_SWITCH; | ||
311 | return hci_result; | ||
312 | } | ||
313 | |||
314 | static int bt_rfkill_toggle_radio(void *data, enum rfkill_state state) | ||
315 | { | ||
316 | u32 result1, result2; | ||
317 | u32 value; | ||
318 | bool radio_state; | ||
319 | struct toshiba_acpi_dev *dev = data; | ||
320 | |||
321 | value = (state == RFKILL_STATE_UNBLOCKED); | ||
322 | |||
323 | if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) | ||
324 | return -EFAULT; | ||
325 | |||
326 | switch (state) { | ||
327 | case RFKILL_STATE_UNBLOCKED: | ||
328 | if (!radio_state) | ||
329 | return -EPERM; | ||
330 | break; | ||
331 | case RFKILL_STATE_SOFT_BLOCKED: | ||
332 | break; | ||
333 | default: | ||
334 | return -EINVAL; | ||
335 | } | ||
336 | |||
337 | mutex_lock(&dev->mutex); | ||
338 | hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); | ||
339 | hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); | ||
340 | mutex_unlock(&dev->mutex); | ||
341 | |||
342 | if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) | ||
343 | return -EFAULT; | ||
344 | |||
345 | return 0; | ||
346 | } | ||
347 | |||
348 | static void bt_poll_rfkill(struct input_polled_dev *poll_dev) | ||
349 | { | ||
350 | bool state_changed; | ||
351 | bool new_rfk_state; | ||
352 | bool value; | ||
353 | u32 hci_result; | ||
354 | struct toshiba_acpi_dev *dev = poll_dev->private; | ||
355 | |||
356 | hci_result = hci_get_radio_state(&value); | ||
357 | if (hci_result != HCI_SUCCESS) | ||
358 | return; /* Can't do anything useful */ | ||
359 | |||
360 | new_rfk_state = value; | ||
361 | |||
362 | mutex_lock(&dev->mutex); | ||
363 | state_changed = new_rfk_state != dev->last_rfk_state; | ||
364 | dev->last_rfk_state = new_rfk_state; | ||
365 | mutex_unlock(&dev->mutex); | ||
366 | |||
367 | if (unlikely(state_changed)) { | ||
368 | rfkill_force_state(dev->rfk_dev, | ||
369 | new_rfk_state ? | ||
370 | RFKILL_STATE_SOFT_BLOCKED : | ||
371 | RFKILL_STATE_HARD_BLOCKED); | ||
372 | input_report_switch(poll_dev->input, SW_RFKILL_ALL, | ||
373 | new_rfk_state); | ||
374 | input_sync(poll_dev->input); | ||
375 | } | ||
376 | } | ||
377 | |||
378 | static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; | ||
379 | static struct backlight_device *toshiba_backlight_device; | ||
380 | static int force_fan; | ||
381 | static int last_key_event; | ||
382 | static int key_event_valid; | ||
383 | |||
384 | typedef struct _ProcItem { | ||
385 | const char *name; | ||
386 | char *(*read_func) (char *); | ||
387 | unsigned long (*write_func) (const char *, unsigned long); | ||
388 | } ProcItem; | ||
389 | |||
390 | /* proc file handlers | ||
391 | */ | ||
392 | |||
393 | static int | ||
394 | dispatch_read(char *page, char **start, off_t off, int count, int *eof, | ||
395 | ProcItem * item) | ||
396 | { | ||
397 | char *p = page; | ||
398 | int len; | ||
399 | |||
400 | if (off == 0) | ||
401 | p = item->read_func(p); | ||
402 | |||
403 | /* ISSUE: I don't understand this code */ | ||
404 | len = (p - page); | ||
405 | if (len <= off + count) | ||
406 | *eof = 1; | ||
407 | *start = page + off; | ||
408 | len -= off; | ||
409 | if (len > count) | ||
410 | len = count; | ||
411 | if (len < 0) | ||
412 | len = 0; | ||
413 | return len; | ||
414 | } | ||
415 | |||
416 | static int | ||
417 | dispatch_write(struct file *file, const char __user * buffer, | ||
418 | unsigned long count, ProcItem * item) | ||
419 | { | ||
420 | int result; | ||
421 | char *tmp_buffer; | ||
422 | |||
423 | /* Arg buffer points to userspace memory, which can't be accessed | ||
424 | * directly. Since we're making a copy, zero-terminate the | ||
425 | * destination so that sscanf can be used on it safely. | ||
426 | */ | ||
427 | tmp_buffer = kmalloc(count + 1, GFP_KERNEL); | ||
428 | if (!tmp_buffer) | ||
429 | return -ENOMEM; | ||
430 | |||
431 | if (copy_from_user(tmp_buffer, buffer, count)) { | ||
432 | result = -EFAULT; | ||
433 | } else { | ||
434 | tmp_buffer[count] = 0; | ||
435 | result = item->write_func(tmp_buffer, count); | ||
436 | } | ||
437 | kfree(tmp_buffer); | ||
438 | return result; | ||
439 | } | ||
440 | |||
441 | static int get_lcd(struct backlight_device *bd) | ||
442 | { | ||
443 | u32 hci_result; | ||
444 | u32 value; | ||
445 | |||
446 | hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result); | ||
447 | if (hci_result == HCI_SUCCESS) { | ||
448 | return (value >> HCI_LCD_BRIGHTNESS_SHIFT); | ||
449 | } else | ||
450 | return -EFAULT; | ||
451 | } | ||
452 | |||
453 | static char *read_lcd(char *p) | ||
454 | { | ||
455 | int value = get_lcd(NULL); | ||
456 | |||
457 | if (value >= 0) { | ||
458 | p += sprintf(p, "brightness: %d\n", value); | ||
459 | p += sprintf(p, "brightness_levels: %d\n", | ||
460 | HCI_LCD_BRIGHTNESS_LEVELS); | ||
461 | } else { | ||
462 | printk(MY_ERR "Error reading LCD brightness\n"); | ||
463 | } | ||
464 | |||
465 | return p; | ||
466 | } | ||
467 | |||
468 | static int set_lcd(int value) | ||
469 | { | ||
470 | u32 hci_result; | ||
471 | |||
472 | value = value << HCI_LCD_BRIGHTNESS_SHIFT; | ||
473 | hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result); | ||
474 | if (hci_result != HCI_SUCCESS) | ||
475 | return -EFAULT; | ||
476 | |||
477 | return 0; | ||
478 | } | ||
479 | |||
480 | static int set_lcd_status(struct backlight_device *bd) | ||
481 | { | ||
482 | return set_lcd(bd->props.brightness); | ||
483 | } | ||
484 | |||
485 | static unsigned long write_lcd(const char *buffer, unsigned long count) | ||
486 | { | ||
487 | int value; | ||
488 | int ret; | ||
489 | |||
490 | if (sscanf(buffer, " brightness : %i", &value) == 1 && | ||
491 | value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) { | ||
492 | ret = set_lcd(value); | ||
493 | if (ret == 0) | ||
494 | ret = count; | ||
495 | } else { | ||
496 | ret = -EINVAL; | ||
497 | } | ||
498 | return ret; | ||
499 | } | ||
500 | |||
501 | static char *read_video(char *p) | ||
502 | { | ||
503 | u32 hci_result; | ||
504 | u32 value; | ||
505 | |||
506 | hci_read1(HCI_VIDEO_OUT, &value, &hci_result); | ||
507 | if (hci_result == HCI_SUCCESS) { | ||
508 | int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0; | ||
509 | int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0; | ||
510 | int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0; | ||
511 | p += sprintf(p, "lcd_out: %d\n", is_lcd); | ||
512 | p += sprintf(p, "crt_out: %d\n", is_crt); | ||
513 | p += sprintf(p, "tv_out: %d\n", is_tv); | ||
514 | } else { | ||
515 | printk(MY_ERR "Error reading video out status\n"); | ||
516 | } | ||
517 | |||
518 | return p; | ||
519 | } | ||
520 | |||
521 | static unsigned long write_video(const char *buffer, unsigned long count) | ||
522 | { | ||
523 | int value; | ||
524 | int remain = count; | ||
525 | int lcd_out = -1; | ||
526 | int crt_out = -1; | ||
527 | int tv_out = -1; | ||
528 | u32 hci_result; | ||
529 | u32 video_out; | ||
530 | |||
531 | /* scan expression. Multiple expressions may be delimited with ; | ||
532 | * | ||
533 | * NOTE: to keep scanning simple, invalid fields are ignored | ||
534 | */ | ||
535 | while (remain) { | ||
536 | if (sscanf(buffer, " lcd_out : %i", &value) == 1) | ||
537 | lcd_out = value & 1; | ||
538 | else if (sscanf(buffer, " crt_out : %i", &value) == 1) | ||
539 | crt_out = value & 1; | ||
540 | else if (sscanf(buffer, " tv_out : %i", &value) == 1) | ||
541 | tv_out = value & 1; | ||
542 | /* advance to one character past the next ; */ | ||
543 | do { | ||
544 | ++buffer; | ||
545 | --remain; | ||
546 | } | ||
547 | while (remain && *(buffer - 1) != ';'); | ||
548 | } | ||
549 | |||
550 | hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result); | ||
551 | if (hci_result == HCI_SUCCESS) { | ||
552 | unsigned int new_video_out = video_out; | ||
553 | if (lcd_out != -1) | ||
554 | _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out); | ||
555 | if (crt_out != -1) | ||
556 | _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out); | ||
557 | if (tv_out != -1) | ||
558 | _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out); | ||
559 | /* To avoid unnecessary video disruption, only write the new | ||
560 | * video setting if something changed. */ | ||
561 | if (new_video_out != video_out) | ||
562 | write_acpi_int(METHOD_VIDEO_OUT, new_video_out); | ||
563 | } else { | ||
564 | return -EFAULT; | ||
565 | } | ||
566 | |||
567 | return count; | ||
568 | } | ||
569 | |||
570 | static char *read_fan(char *p) | ||
571 | { | ||
572 | u32 hci_result; | ||
573 | u32 value; | ||
574 | |||
575 | hci_read1(HCI_FAN, &value, &hci_result); | ||
576 | if (hci_result == HCI_SUCCESS) { | ||
577 | p += sprintf(p, "running: %d\n", (value > 0)); | ||
578 | p += sprintf(p, "force_on: %d\n", force_fan); | ||
579 | } else { | ||
580 | printk(MY_ERR "Error reading fan status\n"); | ||
581 | } | ||
582 | |||
583 | return p; | ||
584 | } | ||
585 | |||
586 | static unsigned long write_fan(const char *buffer, unsigned long count) | ||
587 | { | ||
588 | int value; | ||
589 | u32 hci_result; | ||
590 | |||
591 | if (sscanf(buffer, " force_on : %i", &value) == 1 && | ||
592 | value >= 0 && value <= 1) { | ||
593 | hci_write1(HCI_FAN, value, &hci_result); | ||
594 | if (hci_result != HCI_SUCCESS) | ||
595 | return -EFAULT; | ||
596 | else | ||
597 | force_fan = value; | ||
598 | } else { | ||
599 | return -EINVAL; | ||
600 | } | ||
601 | |||
602 | return count; | ||
603 | } | ||
604 | |||
605 | static char *read_keys(char *p) | ||
606 | { | ||
607 | u32 hci_result; | ||
608 | u32 value; | ||
609 | |||
610 | if (!key_event_valid) { | ||
611 | hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result); | ||
612 | if (hci_result == HCI_SUCCESS) { | ||
613 | key_event_valid = 1; | ||
614 | last_key_event = value; | ||
615 | } else if (hci_result == HCI_EMPTY) { | ||
616 | /* better luck next time */ | ||
617 | } else if (hci_result == HCI_NOT_SUPPORTED) { | ||
618 | /* This is a workaround for an unresolved issue on | ||
619 | * some machines where system events sporadically | ||
620 | * become disabled. */ | ||
621 | hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result); | ||
622 | printk(MY_NOTICE "Re-enabled hotkeys\n"); | ||
623 | } else { | ||
624 | printk(MY_ERR "Error reading hotkey status\n"); | ||
625 | goto end; | ||
626 | } | ||
627 | } | ||
628 | |||
629 | p += sprintf(p, "hotkey_ready: %d\n", key_event_valid); | ||
630 | p += sprintf(p, "hotkey: 0x%04x\n", last_key_event); | ||
631 | |||
632 | end: | ||
633 | return p; | ||
634 | } | ||
635 | |||
636 | static unsigned long write_keys(const char *buffer, unsigned long count) | ||
637 | { | ||
638 | int value; | ||
639 | |||
640 | if (sscanf(buffer, " hotkey_ready : %i", &value) == 1 && value == 0) { | ||
641 | key_event_valid = 0; | ||
642 | } else { | ||
643 | return -EINVAL; | ||
644 | } | ||
645 | |||
646 | return count; | ||
647 | } | ||
648 | |||
649 | static char *read_version(char *p) | ||
650 | { | ||
651 | p += sprintf(p, "driver: %s\n", TOSHIBA_ACPI_VERSION); | ||
652 | p += sprintf(p, "proc_interface: %d\n", | ||
653 | PROC_INTERFACE_VERSION); | ||
654 | return p; | ||
655 | } | ||
656 | |||
657 | /* proc and module init | ||
658 | */ | ||
659 | |||
660 | #define PROC_TOSHIBA "toshiba" | ||
661 | |||
662 | static ProcItem proc_items[] = { | ||
663 | {"lcd", read_lcd, write_lcd}, | ||
664 | {"video", read_video, write_video}, | ||
665 | {"fan", read_fan, write_fan}, | ||
666 | {"keys", read_keys, write_keys}, | ||
667 | {"version", read_version, NULL}, | ||
668 | {NULL} | ||
669 | }; | ||
670 | |||
671 | static acpi_status __init add_device(void) | ||
672 | { | ||
673 | struct proc_dir_entry *proc; | ||
674 | ProcItem *item; | ||
675 | |||
676 | for (item = proc_items; item->name; ++item) { | ||
677 | proc = create_proc_read_entry(item->name, | ||
678 | S_IFREG | S_IRUGO | S_IWUSR, | ||
679 | toshiba_proc_dir, | ||
680 | (read_proc_t *) dispatch_read, | ||
681 | item); | ||
682 | if (proc) | ||
683 | proc->owner = THIS_MODULE; | ||
684 | if (proc && item->write_func) | ||
685 | proc->write_proc = (write_proc_t *) dispatch_write; | ||
686 | } | ||
687 | |||
688 | return AE_OK; | ||
689 | } | ||
690 | |||
691 | static acpi_status remove_device(void) | ||
692 | { | ||
693 | ProcItem *item; | ||
694 | |||
695 | for (item = proc_items; item->name; ++item) | ||
696 | remove_proc_entry(item->name, toshiba_proc_dir); | ||
697 | return AE_OK; | ||
698 | } | ||
699 | |||
700 | static struct backlight_ops toshiba_backlight_data = { | ||
701 | .get_brightness = get_lcd, | ||
702 | .update_status = set_lcd_status, | ||
703 | }; | ||
704 | |||
705 | static void toshiba_acpi_exit(void) | ||
706 | { | ||
707 | if (toshiba_acpi.poll_dev) { | ||
708 | input_unregister_polled_device(toshiba_acpi.poll_dev); | ||
709 | input_free_polled_device(toshiba_acpi.poll_dev); | ||
710 | } | ||
711 | |||
712 | if (toshiba_acpi.rfk_dev) | ||
713 | rfkill_unregister(toshiba_acpi.rfk_dev); | ||
714 | |||
715 | if (toshiba_backlight_device) | ||
716 | backlight_device_unregister(toshiba_backlight_device); | ||
717 | |||
718 | remove_device(); | ||
719 | |||
720 | if (toshiba_proc_dir) | ||
721 | remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); | ||
722 | |||
723 | platform_device_unregister(toshiba_acpi.p_dev); | ||
724 | |||
725 | return; | ||
726 | } | ||
727 | |||
728 | static int __init toshiba_acpi_init(void) | ||
729 | { | ||
730 | acpi_status status = AE_OK; | ||
731 | u32 hci_result; | ||
732 | bool bt_present; | ||
733 | bool bt_on; | ||
734 | bool radio_on; | ||
735 | int ret = 0; | ||
736 | |||
737 | if (acpi_disabled) | ||
738 | return -ENODEV; | ||
739 | |||
740 | /* simple device detection: look for HCI method */ | ||
741 | if (is_valid_acpi_path(METHOD_HCI_1)) | ||
742 | method_hci = METHOD_HCI_1; | ||
743 | else if (is_valid_acpi_path(METHOD_HCI_2)) | ||
744 | method_hci = METHOD_HCI_2; | ||
745 | else | ||
746 | return -ENODEV; | ||
747 | |||
748 | printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n", | ||
749 | TOSHIBA_ACPI_VERSION); | ||
750 | printk(MY_INFO " HCI method: %s\n", method_hci); | ||
751 | |||
752 | mutex_init(&toshiba_acpi.mutex); | ||
753 | |||
754 | toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi", | ||
755 | -1, NULL, 0); | ||
756 | if (IS_ERR(toshiba_acpi.p_dev)) { | ||
757 | ret = PTR_ERR(toshiba_acpi.p_dev); | ||
758 | printk(MY_ERR "unable to register platform device\n"); | ||
759 | toshiba_acpi.p_dev = NULL; | ||
760 | toshiba_acpi_exit(); | ||
761 | return ret; | ||
762 | } | ||
763 | |||
764 | force_fan = 0; | ||
765 | key_event_valid = 0; | ||
766 | |||
767 | /* enable event fifo */ | ||
768 | hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result); | ||
769 | |||
770 | toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir); | ||
771 | if (!toshiba_proc_dir) { | ||
772 | toshiba_acpi_exit(); | ||
773 | return -ENODEV; | ||
774 | } else { | ||
775 | toshiba_proc_dir->owner = THIS_MODULE; | ||
776 | status = add_device(); | ||
777 | if (ACPI_FAILURE(status)) { | ||
778 | toshiba_acpi_exit(); | ||
779 | return -ENODEV; | ||
780 | } | ||
781 | } | ||
782 | |||
783 | toshiba_backlight_device = backlight_device_register("toshiba", | ||
784 | &toshiba_acpi.p_dev->dev, | ||
785 | NULL, | ||
786 | &toshiba_backlight_data); | ||
787 | if (IS_ERR(toshiba_backlight_device)) { | ||
788 | ret = PTR_ERR(toshiba_backlight_device); | ||
789 | |||
790 | printk(KERN_ERR "Could not register toshiba backlight device\n"); | ||
791 | toshiba_backlight_device = NULL; | ||
792 | toshiba_acpi_exit(); | ||
793 | return ret; | ||
794 | } | ||
795 | toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; | ||
796 | |||
797 | /* Register rfkill switch for Bluetooth */ | ||
798 | if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) { | ||
799 | toshiba_acpi.rfk_dev = rfkill_allocate(&toshiba_acpi.p_dev->dev, | ||
800 | RFKILL_TYPE_BLUETOOTH); | ||
801 | if (!toshiba_acpi.rfk_dev) { | ||
802 | printk(MY_ERR "unable to allocate rfkill device\n"); | ||
803 | toshiba_acpi_exit(); | ||
804 | return -ENOMEM; | ||
805 | } | ||
806 | |||
807 | toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name; | ||
808 | toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio; | ||
809 | toshiba_acpi.rfk_dev->user_claim_unsupported = 1; | ||
810 | toshiba_acpi.rfk_dev->data = &toshiba_acpi; | ||
811 | |||
812 | if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) { | ||
813 | toshiba_acpi.rfk_dev->state = RFKILL_STATE_UNBLOCKED; | ||
814 | } else if (hci_get_radio_state(&radio_on) == HCI_SUCCESS && | ||
815 | radio_on) { | ||
816 | toshiba_acpi.rfk_dev->state = RFKILL_STATE_SOFT_BLOCKED; | ||
817 | } else { | ||
818 | toshiba_acpi.rfk_dev->state = RFKILL_STATE_HARD_BLOCKED; | ||
819 | } | ||
820 | |||
821 | ret = rfkill_register(toshiba_acpi.rfk_dev); | ||
822 | if (ret) { | ||
823 | printk(MY_ERR "unable to register rfkill device\n"); | ||
824 | toshiba_acpi_exit(); | ||
825 | return -ENOMEM; | ||
826 | } | ||
827 | |||
828 | /* Register input device for kill switch */ | ||
829 | toshiba_acpi.poll_dev = input_allocate_polled_device(); | ||
830 | if (!toshiba_acpi.poll_dev) { | ||
831 | printk(MY_ERR | ||
832 | "unable to allocate kill-switch input device\n"); | ||
833 | toshiba_acpi_exit(); | ||
834 | return -ENOMEM; | ||
835 | } | ||
836 | toshiba_acpi.poll_dev->private = &toshiba_acpi; | ||
837 | toshiba_acpi.poll_dev->poll = bt_poll_rfkill; | ||
838 | toshiba_acpi.poll_dev->poll_interval = 1000; /* msecs */ | ||
839 | |||
840 | toshiba_acpi.poll_dev->input->name = toshiba_acpi.rfk_name; | ||
841 | toshiba_acpi.poll_dev->input->id.bustype = BUS_HOST; | ||
842 | /* Toshiba USB ID */ | ||
843 | toshiba_acpi.poll_dev->input->id.vendor = 0x0930; | ||
844 | set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit); | ||
845 | set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit); | ||
846 | input_report_switch(toshiba_acpi.poll_dev->input, | ||
847 | SW_RFKILL_ALL, TRUE); | ||
848 | input_sync(toshiba_acpi.poll_dev->input); | ||
849 | |||
850 | ret = input_register_polled_device(toshiba_acpi.poll_dev); | ||
851 | if (ret) { | ||
852 | printk(MY_ERR | ||
853 | "unable to register kill-switch input device\n"); | ||
854 | toshiba_acpi_exit(); | ||
855 | return ret; | ||
856 | } | ||
857 | } | ||
858 | |||
859 | return 0; | ||
860 | } | ||
861 | |||
862 | module_init(toshiba_acpi_init); | ||
863 | module_exit(toshiba_acpi_exit); | ||