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1da177e4 LT |
1 | /* |
2 | * toshiba_acpi.c - Toshiba Laptop ACPI Extras | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2002-2004 John Belmonte | |
c41a40c5 | 6 | * Copyright (C) 2008 Philip Langdale |
1da177e4 LT |
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 | ||
c41a40c5 | 37 | #define TOSHIBA_ACPI_VERSION "0.19" |
1da177e4 LT |
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> | |
c9263557 | 45 | #include <linux/backlight.h> |
c41a40c5 | 46 | #include <linux/platform_device.h> |
47 | #include <linux/rfkill.h> | |
48 | #include <linux/input-polldev.h> | |
c9263557 | 49 | |
1da177e4 LT |
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 | |
c41a40c5 | 97 | #define HCI_WIRELESS 0x0056 |
1da177e4 LT |
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 | |
c41a40c5 | 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 | |
1da177e4 | 110 | |
4db42c51 | 111 | static const struct acpi_device_id toshiba_device_ids[] = { |
112 | {"TOS6200", 0}, | |
c41a40c5 | 113 | {"TOS6208", 0}, |
4db42c51 | 114 | {"TOS1900", 0}, |
115 | {"", 0}, | |
116 | }; | |
117 | MODULE_DEVICE_TABLE(acpi, toshiba_device_ids); | |
118 | ||
1da177e4 LT |
119 | /* utility |
120 | */ | |
121 | ||
4be44fcd | 122 | static __inline__ void _set_bit(u32 * word, u32 mask, int value) |
1da177e4 LT |
123 | { |
124 | *word = (*word & ~mask) | (mask * value); | |
125 | } | |
126 | ||
127 | /* acpi interface wrappers | |
128 | */ | |
129 | ||
4be44fcd | 130 | static int is_valid_acpi_path(const char *methodName) |
1da177e4 LT |
131 | { |
132 | acpi_handle handle; | |
133 | acpi_status status; | |
134 | ||
4be44fcd | 135 | status = acpi_get_handle(NULL, (char *)methodName, &handle); |
1da177e4 LT |
136 | return !ACPI_FAILURE(status); |
137 | } | |
138 | ||
4be44fcd | 139 | static int write_acpi_int(const char *methodName, int val) |
1da177e4 LT |
140 | { |
141 | struct acpi_object_list params; | |
142 | union acpi_object in_objs[1]; | |
143 | acpi_status status; | |
144 | ||
b2b7910d | 145 | params.count = ARRAY_SIZE(in_objs); |
1da177e4 LT |
146 | params.pointer = in_objs; |
147 | in_objs[0].type = ACPI_TYPE_INTEGER; | |
148 | in_objs[0].integer.value = val; | |
149 | ||
4be44fcd | 150 | status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL); |
1da177e4 LT |
151 | return (status == AE_OK); |
152 | } | |
153 | ||
154 | #if 0 | |
4be44fcd | 155 | static int read_acpi_int(const char *methodName, int *pVal) |
1da177e4 LT |
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 | ||
4be44fcd | 164 | status = acpi_evaluate_object(0, (char *)methodName, 0, &results); |
1da177e4 LT |
165 | *pVal = out_objs[0].integer.value; |
166 | ||
167 | return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER); | |
168 | } | |
169 | #endif | |
170 | ||
4be44fcd | 171 | static const char *method_hci /*= 0*/ ; |
1da177e4 LT |
172 | |
173 | /* Perform a raw HCI call. Here we don't care about input or output buffer | |
174 | * format. | |
175 | */ | |
4be44fcd | 176 | static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS]) |
1da177e4 LT |
177 | { |
178 | struct acpi_object_list params; | |
179 | union acpi_object in_objs[HCI_WORDS]; | |
180 | struct acpi_buffer results; | |
4be44fcd | 181 | union acpi_object out_objs[HCI_WORDS + 1]; |
1da177e4 LT |
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 | ||
4be44fcd LB |
195 | status = acpi_evaluate_object(NULL, (char *)method_hci, ¶ms, |
196 | &results); | |
1da177e4 LT |
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 | ||
c41a40c5 | 206 | /* common hci tasks (get or set one or two value) |
1da177e4 LT |
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 | ||
4be44fcd | 212 | static acpi_status hci_write1(u32 reg, u32 in1, u32 * result) |
1da177e4 LT |
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 | ||
4be44fcd | 221 | static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result) |
1da177e4 LT |
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 | ||
c41a40c5 | 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); | |
cab08969 | 374 | input_sync(poll_dev->input); |
c41a40c5 | 375 | } |
376 | } | |
377 | ||
4be44fcd | 378 | static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; |
c9263557 | 379 | static struct backlight_device *toshiba_backlight_device; |
4be44fcd LB |
380 | static int force_fan; |
381 | static int last_key_event; | |
382 | static int key_event_valid; | |
1da177e4 | 383 | |
4be44fcd LB |
384 | typedef struct _ProcItem { |
385 | const char *name; | |
386 | char *(*read_func) (char *); | |
387 | unsigned long (*write_func) (const char *, unsigned long); | |
1da177e4 LT |
388 | } ProcItem; |
389 | ||
390 | /* proc file handlers | |
391 | */ | |
392 | ||
393 | static int | |
4be44fcd LB |
394 | dispatch_read(char *page, char **start, off_t off, int count, int *eof, |
395 | ProcItem * item) | |
1da177e4 | 396 | { |
4be44fcd | 397 | char *p = page; |
1da177e4 LT |
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); | |
4be44fcd LB |
405 | if (len <= off + count) |
406 | *eof = 1; | |
1da177e4 LT |
407 | *start = page + off; |
408 | len -= off; | |
4be44fcd LB |
409 | if (len > count) |
410 | len = count; | |
411 | if (len < 0) | |
412 | len = 0; | |
1da177e4 LT |
413 | return len; |
414 | } | |
415 | ||
416 | static int | |
4be44fcd LB |
417 | dispatch_write(struct file *file, const char __user * buffer, |
418 | unsigned long count, ProcItem * item) | |
1da177e4 LT |
419 | { |
420 | int result; | |
4be44fcd | 421 | char *tmp_buffer; |
1da177e4 LT |
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); | |
4be44fcd | 428 | if (!tmp_buffer) |
f4224153 PI |
429 | return -ENOMEM; |
430 | ||
1da177e4 LT |
431 | if (copy_from_user(tmp_buffer, buffer, count)) { |
432 | result = -EFAULT; | |
4be44fcd | 433 | } else { |
1da177e4 LT |
434 | tmp_buffer[count] = 0; |
435 | result = item->write_func(tmp_buffer, count); | |
436 | } | |
437 | kfree(tmp_buffer); | |
438 | return result; | |
439 | } | |
440 | ||
c9263557 | 441 | static int get_lcd(struct backlight_device *bd) |
1da177e4 LT |
442 | { |
443 | u32 hci_result; | |
444 | u32 value; | |
445 | ||
446 | hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result); | |
447 | if (hci_result == HCI_SUCCESS) { | |
c9263557 HM |
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) { | |
1da177e4 LT |
458 | p += sprintf(p, "brightness: %d\n", value); |
459 | p += sprintf(p, "brightness_levels: %d\n", | |
4be44fcd | 460 | HCI_LCD_BRIGHTNESS_LEVELS); |
1da177e4 LT |
461 | } else { |
462 | printk(MY_ERR "Error reading LCD brightness\n"); | |
463 | } | |
464 | ||
465 | return p; | |
466 | } | |
467 | ||
c9263557 HM |
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 | { | |
599a52d1 | 482 | return set_lcd(bd->props.brightness); |
c9263557 HM |
483 | } |
484 | ||
4be44fcd | 485 | static unsigned long write_lcd(const char *buffer, unsigned long count) |
1da177e4 LT |
486 | { |
487 | int value; | |
c8af57eb | 488 | int ret; |
1da177e4 LT |
489 | |
490 | if (sscanf(buffer, " brightness : %i", &value) == 1 && | |
c8af57eb | 491 | value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) { |
c9263557 | 492 | ret = set_lcd(value); |
c8af57eb MO |
493 | if (ret == 0) |
494 | ret = count; | |
495 | } else { | |
c9263557 | 496 | ret = -EINVAL; |
c8af57eb | 497 | } |
c9263557 | 498 | return ret; |
1da177e4 LT |
499 | } |
500 | ||
4be44fcd | 501 | static char *read_video(char *p) |
1da177e4 LT |
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; | |
4be44fcd | 510 | int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0; |
1da177e4 LT |
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 | ||
4be44fcd | 521 | static unsigned long write_video(const char *buffer, unsigned long count) |
1da177e4 LT |
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; | |
b4482a4b | 529 | u32 video_out; |
1da177e4 LT |
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 | } | |
4be44fcd | 547 | while (remain && *(buffer - 1) != ';'); |
1da177e4 LT |
548 | } |
549 | ||
550 | hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result); | |
551 | if (hci_result == HCI_SUCCESS) { | |
9e113e00 | 552 | unsigned int new_video_out = video_out; |
1da177e4 LT |
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 | ||
4be44fcd | 570 | static char *read_fan(char *p) |
1da177e4 LT |
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 | ||
4be44fcd | 586 | static unsigned long write_fan(const char *buffer, unsigned long count) |
1da177e4 LT |
587 | { |
588 | int value; | |
589 | u32 hci_result; | |
590 | ||
591 | if (sscanf(buffer, " force_on : %i", &value) == 1 && | |
4be44fcd | 592 | value >= 0 && value <= 1) { |
1da177e4 LT |
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 | ||
4be44fcd | 605 | static char *read_keys(char *p) |
1da177e4 LT |
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 | ||
4be44fcd | 632 | end: |
1da177e4 LT |
633 | return p; |
634 | } | |
635 | ||
4be44fcd | 636 | static unsigned long write_keys(const char *buffer, unsigned long count) |
1da177e4 LT |
637 | { |
638 | int value; | |
639 | ||
4be44fcd | 640 | if (sscanf(buffer, " hotkey_ready : %i", &value) == 1 && value == 0) { |
1da177e4 LT |
641 | key_event_valid = 0; |
642 | } else { | |
643 | return -EINVAL; | |
644 | } | |
645 | ||
646 | return count; | |
647 | } | |
648 | ||
4be44fcd | 649 | static char *read_version(char *p) |
1da177e4 LT |
650 | { |
651 | p += sprintf(p, "driver: %s\n", TOSHIBA_ACPI_VERSION); | |
652 | p += sprintf(p, "proc_interface: %d\n", | |
4be44fcd | 653 | PROC_INTERFACE_VERSION); |
1da177e4 LT |
654 | return p; |
655 | } | |
656 | ||
657 | /* proc and module init | |
658 | */ | |
659 | ||
660 | #define PROC_TOSHIBA "toshiba" | |
661 | ||
4be44fcd LB |
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} | |
1da177e4 LT |
669 | }; |
670 | ||
4be44fcd | 671 | static acpi_status __init add_device(void) |
1da177e4 | 672 | { |
4be44fcd LB |
673 | struct proc_dir_entry *proc; |
674 | ProcItem *item; | |
1da177e4 | 675 | |
4be44fcd | 676 | for (item = proc_items; item->name; ++item) { |
1da177e4 | 677 | proc = create_proc_read_entry(item->name, |
4be44fcd LB |
678 | S_IFREG | S_IRUGO | S_IWUSR, |
679 | toshiba_proc_dir, | |
680 | (read_proc_t *) dispatch_read, | |
681 | item); | |
1da177e4 LT |
682 | if (proc) |
683 | proc->owner = THIS_MODULE; | |
684 | if (proc && item->write_func) | |
4be44fcd | 685 | proc->write_proc = (write_proc_t *) dispatch_write; |
1da177e4 LT |
686 | } |
687 | ||
688 | return AE_OK; | |
689 | } | |
690 | ||
b1d93de3 | 691 | static acpi_status remove_device(void) |
1da177e4 | 692 | { |
4be44fcd | 693 | ProcItem *item; |
1da177e4 LT |
694 | |
695 | for (item = proc_items; item->name; ++item) | |
696 | remove_proc_entry(item->name, toshiba_proc_dir); | |
697 | return AE_OK; | |
698 | } | |
699 | ||
599a52d1 | 700 | static struct backlight_ops toshiba_backlight_data = { |
c9263557 HM |
701 | .get_brightness = get_lcd, |
702 | .update_status = set_lcd_status, | |
c9263557 HM |
703 | }; |
704 | ||
b2b77b23 | 705 | static void toshiba_acpi_exit(void) |
c9263557 | 706 | { |
c41a40c5 | 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 | ||
c9263557 HM |
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 | ||
c41a40c5 | 723 | platform_device_unregister(toshiba_acpi.p_dev); |
724 | ||
c9263557 HM |
725 | return; |
726 | } | |
727 | ||
4be44fcd | 728 | static int __init toshiba_acpi_init(void) |
1da177e4 LT |
729 | { |
730 | acpi_status status = AE_OK; | |
731 | u32 hci_result; | |
c41a40c5 | 732 | bool bt_present; |
733 | bool bt_on; | |
734 | bool radio_on; | |
735 | int ret = 0; | |
1da177e4 LT |
736 | |
737 | if (acpi_disabled) | |
738 | return -ENODEV; | |
fb9802fa | 739 | |
1da177e4 LT |
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", | |
4be44fcd | 749 | TOSHIBA_ACPI_VERSION); |
1da177e4 LT |
750 | printk(MY_INFO " HCI method: %s\n", method_hci); |
751 | ||
c41a40c5 | 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 | ||
1da177e4 LT |
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) { | |
c41a40c5 | 772 | toshiba_acpi_exit(); |
773 | return -ENODEV; | |
1da177e4 LT |
774 | } else { |
775 | toshiba_proc_dir->owner = THIS_MODULE; | |
776 | status = add_device(); | |
c41a40c5 | 777 | if (ACPI_FAILURE(status)) { |
778 | toshiba_acpi_exit(); | |
779 | return -ENODEV; | |
780 | } | |
1da177e4 LT |
781 | } |
782 | ||
c41a40c5 | 783 | toshiba_backlight_device = backlight_device_register("toshiba", |
784 | &toshiba_acpi.p_dev->dev, | |
519ab5f2 | 785 | NULL, |
c9263557 HM |
786 | &toshiba_backlight_data); |
787 | if (IS_ERR(toshiba_backlight_device)) { | |
c41a40c5 | 788 | ret = PTR_ERR(toshiba_backlight_device); |
1299342b | 789 | |
c9263557 HM |
790 | printk(KERN_ERR "Could not register toshiba backlight device\n"); |
791 | toshiba_backlight_device = NULL; | |
792 | toshiba_acpi_exit(); | |
1299342b | 793 | return ret; |
c9263557 | 794 | } |
599a52d1 | 795 | toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; |
1da177e4 | 796 | |
c41a40c5 | 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 | ||
829 | /* Register input device for kill switch */ | |
830 | toshiba_acpi.poll_dev = input_allocate_polled_device(); | |
831 | if (!toshiba_acpi.poll_dev) { | |
832 | printk(MY_ERR "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_acpi.poll_dev->input->id.vendor = 0x0930; /* Toshiba USB ID */ | |
843 | set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit); | |
844 | set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit); | |
845 | input_report_switch(toshiba_acpi.poll_dev->input, SW_RFKILL_ALL, TRUE); | |
cab08969 | 846 | input_sync(toshiba_acpi.poll_dev->input); |
c41a40c5 | 847 | |
848 | ret = input_register_polled_device(toshiba_acpi.poll_dev); | |
849 | if (ret) { | |
850 | printk(MY_ERR "unable to register kill-switch input device\n"); | |
c41a40c5 | 851 | toshiba_acpi_exit(); |
852 | return ret; | |
853 | } | |
854 | ||
855 | return 0; | |
1da177e4 LT |
856 | } |
857 | ||
858 | module_init(toshiba_acpi_init); | |
859 | module_exit(toshiba_acpi_exit); |