]>
Commit | Line | Data |
---|---|---|
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> | |
936c8bcd | 45 | #include <linux/seq_file.h> |
c9263557 | 46 | #include <linux/backlight.h> |
c41a40c5 | 47 | #include <linux/platform_device.h> |
48 | #include <linux/rfkill.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; | |
19d337df | 253 | struct rfkill *bt_rfk; |
c41a40c5 | 254 | |
255 | const char *bt_name; | |
c41a40c5 | 256 | |
257 | struct mutex mutex; | |
258 | }; | |
259 | ||
260 | static struct toshiba_acpi_dev toshiba_acpi = { | |
261 | .bt_name = "Toshiba Bluetooth", | |
c41a40c5 | 262 | }; |
263 | ||
264 | /* Bluetooth rfkill handlers */ | |
265 | ||
266 | static u32 hci_get_bt_present(bool *present) | |
267 | { | |
268 | u32 hci_result; | |
269 | u32 value, value2; | |
270 | ||
271 | value = 0; | |
272 | value2 = 0; | |
273 | hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); | |
274 | if (hci_result == HCI_SUCCESS) | |
275 | *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false; | |
276 | ||
277 | return hci_result; | |
278 | } | |
279 | ||
c41a40c5 | 280 | static u32 hci_get_radio_state(bool *radio_state) |
281 | { | |
282 | u32 hci_result; | |
283 | u32 value, value2; | |
284 | ||
285 | value = 0; | |
286 | value2 = 0x0001; | |
287 | hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); | |
288 | ||
289 | *radio_state = value & HCI_WIRELESS_KILL_SWITCH; | |
290 | return hci_result; | |
291 | } | |
292 | ||
19d337df | 293 | static int bt_rfkill_set_block(void *data, bool blocked) |
c41a40c5 | 294 | { |
19d337df | 295 | struct toshiba_acpi_dev *dev = data; |
c41a40c5 | 296 | u32 result1, result2; |
297 | u32 value; | |
19d337df | 298 | int err; |
c41a40c5 | 299 | bool radio_state; |
c41a40c5 | 300 | |
19d337df | 301 | value = (blocked == false); |
c41a40c5 | 302 | |
19d337df JB |
303 | mutex_lock(&dev->mutex); |
304 | if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) { | |
305 | err = -EBUSY; | |
306 | goto out; | |
307 | } | |
c41a40c5 | 308 | |
19d337df JB |
309 | if (!radio_state) { |
310 | err = 0; | |
311 | goto out; | |
c41a40c5 | 312 | } |
313 | ||
c41a40c5 | 314 | hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); |
315 | hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); | |
c41a40c5 | 316 | |
317 | if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) | |
19d337df JB |
318 | err = -EBUSY; |
319 | else | |
320 | err = 0; | |
321 | out: | |
322 | mutex_unlock(&dev->mutex); | |
323 | return err; | |
c41a40c5 | 324 | } |
325 | ||
19d337df | 326 | static void bt_rfkill_poll(struct rfkill *rfkill, void *data) |
c41a40c5 | 327 | { |
c41a40c5 | 328 | bool new_rfk_state; |
329 | bool value; | |
330 | u32 hci_result; | |
19d337df JB |
331 | struct toshiba_acpi_dev *dev = data; |
332 | ||
333 | mutex_lock(&dev->mutex); | |
c41a40c5 | 334 | |
335 | hci_result = hci_get_radio_state(&value); | |
19d337df JB |
336 | if (hci_result != HCI_SUCCESS) { |
337 | /* Can't do anything useful */ | |
338 | mutex_unlock(&dev->mutex); | |
82e7784f | 339 | return; |
19d337df | 340 | } |
c41a40c5 | 341 | |
342 | new_rfk_state = value; | |
343 | ||
c41a40c5 | 344 | mutex_unlock(&dev->mutex); |
345 | ||
19d337df JB |
346 | if (rfkill_set_hw_state(rfkill, !new_rfk_state)) |
347 | bt_rfkill_set_block(data, true); | |
c41a40c5 | 348 | } |
349 | ||
19d337df JB |
350 | static const struct rfkill_ops toshiba_rfk_ops = { |
351 | .set_block = bt_rfkill_set_block, | |
352 | .poll = bt_rfkill_poll, | |
353 | }; | |
354 | ||
4be44fcd | 355 | static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; |
c9263557 | 356 | static struct backlight_device *toshiba_backlight_device; |
4be44fcd LB |
357 | static int force_fan; |
358 | static int last_key_event; | |
359 | static int key_event_valid; | |
1da177e4 | 360 | |
c9263557 | 361 | static int get_lcd(struct backlight_device *bd) |
1da177e4 LT |
362 | { |
363 | u32 hci_result; | |
364 | u32 value; | |
365 | ||
366 | hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result); | |
367 | if (hci_result == HCI_SUCCESS) { | |
c9263557 HM |
368 | return (value >> HCI_LCD_BRIGHTNESS_SHIFT); |
369 | } else | |
370 | return -EFAULT; | |
371 | } | |
372 | ||
936c8bcd | 373 | static int lcd_proc_show(struct seq_file *m, void *v) |
c9263557 HM |
374 | { |
375 | int value = get_lcd(NULL); | |
376 | ||
377 | if (value >= 0) { | |
936c8bcd AD |
378 | seq_printf(m, "brightness: %d\n", value); |
379 | seq_printf(m, "brightness_levels: %d\n", | |
4be44fcd | 380 | HCI_LCD_BRIGHTNESS_LEVELS); |
1da177e4 LT |
381 | } else { |
382 | printk(MY_ERR "Error reading LCD brightness\n"); | |
383 | } | |
384 | ||
936c8bcd AD |
385 | return 0; |
386 | } | |
387 | ||
388 | static int lcd_proc_open(struct inode *inode, struct file *file) | |
389 | { | |
390 | return single_open(file, lcd_proc_show, NULL); | |
1da177e4 LT |
391 | } |
392 | ||
c9263557 HM |
393 | static int set_lcd(int value) |
394 | { | |
395 | u32 hci_result; | |
396 | ||
397 | value = value << HCI_LCD_BRIGHTNESS_SHIFT; | |
398 | hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result); | |
399 | if (hci_result != HCI_SUCCESS) | |
400 | return -EFAULT; | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | static int set_lcd_status(struct backlight_device *bd) | |
406 | { | |
599a52d1 | 407 | return set_lcd(bd->props.brightness); |
c9263557 HM |
408 | } |
409 | ||
936c8bcd AD |
410 | static ssize_t lcd_proc_write(struct file *file, const char __user *buf, |
411 | size_t count, loff_t *pos) | |
1da177e4 | 412 | { |
936c8bcd AD |
413 | char cmd[42]; |
414 | size_t len; | |
1da177e4 | 415 | int value; |
c8af57eb | 416 | int ret; |
1da177e4 | 417 | |
936c8bcd AD |
418 | len = min(count, sizeof(cmd) - 1); |
419 | if (copy_from_user(cmd, buf, len)) | |
420 | return -EFAULT; | |
421 | cmd[len] = '\0'; | |
422 | ||
423 | if (sscanf(cmd, " brightness : %i", &value) == 1 && | |
c8af57eb | 424 | value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) { |
c9263557 | 425 | ret = set_lcd(value); |
c8af57eb MO |
426 | if (ret == 0) |
427 | ret = count; | |
428 | } else { | |
c9263557 | 429 | ret = -EINVAL; |
c8af57eb | 430 | } |
c9263557 | 431 | return ret; |
1da177e4 LT |
432 | } |
433 | ||
936c8bcd AD |
434 | static const struct file_operations lcd_proc_fops = { |
435 | .owner = THIS_MODULE, | |
436 | .open = lcd_proc_open, | |
437 | .read = seq_read, | |
438 | .llseek = seq_lseek, | |
439 | .release = single_release, | |
440 | .write = lcd_proc_write, | |
441 | }; | |
442 | ||
443 | static int video_proc_show(struct seq_file *m, void *v) | |
1da177e4 LT |
444 | { |
445 | u32 hci_result; | |
446 | u32 value; | |
447 | ||
448 | hci_read1(HCI_VIDEO_OUT, &value, &hci_result); | |
449 | if (hci_result == HCI_SUCCESS) { | |
450 | int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0; | |
451 | int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0; | |
4be44fcd | 452 | int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0; |
936c8bcd AD |
453 | seq_printf(m, "lcd_out: %d\n", is_lcd); |
454 | seq_printf(m, "crt_out: %d\n", is_crt); | |
455 | seq_printf(m, "tv_out: %d\n", is_tv); | |
1da177e4 LT |
456 | } else { |
457 | printk(MY_ERR "Error reading video out status\n"); | |
458 | } | |
459 | ||
936c8bcd | 460 | return 0; |
1da177e4 LT |
461 | } |
462 | ||
936c8bcd | 463 | static int video_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 464 | { |
936c8bcd AD |
465 | return single_open(file, video_proc_show, NULL); |
466 | } | |
467 | ||
468 | static ssize_t video_proc_write(struct file *file, const char __user *buf, | |
469 | size_t count, loff_t *pos) | |
470 | { | |
471 | char *cmd, *buffer; | |
1da177e4 LT |
472 | int value; |
473 | int remain = count; | |
474 | int lcd_out = -1; | |
475 | int crt_out = -1; | |
476 | int tv_out = -1; | |
477 | u32 hci_result; | |
b4482a4b | 478 | u32 video_out; |
1da177e4 | 479 | |
936c8bcd AD |
480 | cmd = kmalloc(count + 1, GFP_KERNEL); |
481 | if (!cmd) | |
482 | return -ENOMEM; | |
483 | if (copy_from_user(cmd, buf, count)) { | |
484 | kfree(cmd); | |
485 | return -EFAULT; | |
486 | } | |
487 | cmd[count] = '\0'; | |
488 | ||
489 | buffer = cmd; | |
490 | ||
1da177e4 LT |
491 | /* scan expression. Multiple expressions may be delimited with ; |
492 | * | |
493 | * NOTE: to keep scanning simple, invalid fields are ignored | |
494 | */ | |
495 | while (remain) { | |
496 | if (sscanf(buffer, " lcd_out : %i", &value) == 1) | |
497 | lcd_out = value & 1; | |
498 | else if (sscanf(buffer, " crt_out : %i", &value) == 1) | |
499 | crt_out = value & 1; | |
500 | else if (sscanf(buffer, " tv_out : %i", &value) == 1) | |
501 | tv_out = value & 1; | |
502 | /* advance to one character past the next ; */ | |
503 | do { | |
504 | ++buffer; | |
505 | --remain; | |
506 | } | |
4be44fcd | 507 | while (remain && *(buffer - 1) != ';'); |
1da177e4 LT |
508 | } |
509 | ||
936c8bcd AD |
510 | kfree(cmd); |
511 | ||
1da177e4 LT |
512 | hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result); |
513 | if (hci_result == HCI_SUCCESS) { | |
9e113e00 | 514 | unsigned int new_video_out = video_out; |
1da177e4 LT |
515 | if (lcd_out != -1) |
516 | _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out); | |
517 | if (crt_out != -1) | |
518 | _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out); | |
519 | if (tv_out != -1) | |
520 | _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out); | |
521 | /* To avoid unnecessary video disruption, only write the new | |
522 | * video setting if something changed. */ | |
523 | if (new_video_out != video_out) | |
524 | write_acpi_int(METHOD_VIDEO_OUT, new_video_out); | |
525 | } else { | |
526 | return -EFAULT; | |
527 | } | |
528 | ||
529 | return count; | |
530 | } | |
531 | ||
936c8bcd AD |
532 | static const struct file_operations video_proc_fops = { |
533 | .owner = THIS_MODULE, | |
534 | .open = video_proc_open, | |
535 | .read = seq_read, | |
536 | .llseek = seq_lseek, | |
537 | .release = single_release, | |
538 | .write = video_proc_write, | |
539 | }; | |
540 | ||
541 | static int fan_proc_show(struct seq_file *m, void *v) | |
1da177e4 LT |
542 | { |
543 | u32 hci_result; | |
544 | u32 value; | |
545 | ||
546 | hci_read1(HCI_FAN, &value, &hci_result); | |
547 | if (hci_result == HCI_SUCCESS) { | |
936c8bcd AD |
548 | seq_printf(m, "running: %d\n", (value > 0)); |
549 | seq_printf(m, "force_on: %d\n", force_fan); | |
1da177e4 LT |
550 | } else { |
551 | printk(MY_ERR "Error reading fan status\n"); | |
552 | } | |
553 | ||
936c8bcd AD |
554 | return 0; |
555 | } | |
556 | ||
557 | static int fan_proc_open(struct inode *inode, struct file *file) | |
558 | { | |
559 | return single_open(file, fan_proc_show, NULL); | |
1da177e4 LT |
560 | } |
561 | ||
936c8bcd AD |
562 | static ssize_t fan_proc_write(struct file *file, const char __user *buf, |
563 | size_t count, loff_t *pos) | |
1da177e4 | 564 | { |
936c8bcd AD |
565 | char cmd[42]; |
566 | size_t len; | |
1da177e4 LT |
567 | int value; |
568 | u32 hci_result; | |
569 | ||
936c8bcd AD |
570 | len = min(count, sizeof(cmd) - 1); |
571 | if (copy_from_user(cmd, buf, len)) | |
572 | return -EFAULT; | |
573 | cmd[len] = '\0'; | |
574 | ||
575 | if (sscanf(cmd, " force_on : %i", &value) == 1 && | |
4be44fcd | 576 | value >= 0 && value <= 1) { |
1da177e4 LT |
577 | hci_write1(HCI_FAN, value, &hci_result); |
578 | if (hci_result != HCI_SUCCESS) | |
579 | return -EFAULT; | |
580 | else | |
581 | force_fan = value; | |
582 | } else { | |
583 | return -EINVAL; | |
584 | } | |
585 | ||
586 | return count; | |
587 | } | |
588 | ||
936c8bcd AD |
589 | static const struct file_operations fan_proc_fops = { |
590 | .owner = THIS_MODULE, | |
591 | .open = fan_proc_open, | |
592 | .read = seq_read, | |
593 | .llseek = seq_lseek, | |
594 | .release = single_release, | |
595 | .write = fan_proc_write, | |
596 | }; | |
597 | ||
598 | static int keys_proc_show(struct seq_file *m, void *v) | |
1da177e4 LT |
599 | { |
600 | u32 hci_result; | |
601 | u32 value; | |
602 | ||
603 | if (!key_event_valid) { | |
604 | hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result); | |
605 | if (hci_result == HCI_SUCCESS) { | |
606 | key_event_valid = 1; | |
607 | last_key_event = value; | |
608 | } else if (hci_result == HCI_EMPTY) { | |
609 | /* better luck next time */ | |
610 | } else if (hci_result == HCI_NOT_SUPPORTED) { | |
611 | /* This is a workaround for an unresolved issue on | |
612 | * some machines where system events sporadically | |
613 | * become disabled. */ | |
614 | hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result); | |
615 | printk(MY_NOTICE "Re-enabled hotkeys\n"); | |
616 | } else { | |
617 | printk(MY_ERR "Error reading hotkey status\n"); | |
618 | goto end; | |
619 | } | |
620 | } | |
621 | ||
936c8bcd AD |
622 | seq_printf(m, "hotkey_ready: %d\n", key_event_valid); |
623 | seq_printf(m, "hotkey: 0x%04x\n", last_key_event); | |
624 | end: | |
625 | return 0; | |
626 | } | |
1da177e4 | 627 | |
936c8bcd AD |
628 | static int keys_proc_open(struct inode *inode, struct file *file) |
629 | { | |
630 | return single_open(file, keys_proc_show, NULL); | |
1da177e4 LT |
631 | } |
632 | ||
936c8bcd AD |
633 | static ssize_t keys_proc_write(struct file *file, const char __user *buf, |
634 | size_t count, loff_t *pos) | |
1da177e4 | 635 | { |
936c8bcd AD |
636 | char cmd[42]; |
637 | size_t len; | |
1da177e4 LT |
638 | int value; |
639 | ||
936c8bcd AD |
640 | len = min(count, sizeof(cmd) - 1); |
641 | if (copy_from_user(cmd, buf, len)) | |
642 | return -EFAULT; | |
643 | cmd[len] = '\0'; | |
644 | ||
645 | if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) { | |
1da177e4 LT |
646 | key_event_valid = 0; |
647 | } else { | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | return count; | |
652 | } | |
653 | ||
936c8bcd AD |
654 | static const struct file_operations keys_proc_fops = { |
655 | .owner = THIS_MODULE, | |
656 | .open = keys_proc_open, | |
657 | .read = seq_read, | |
658 | .llseek = seq_lseek, | |
659 | .release = single_release, | |
660 | .write = keys_proc_write, | |
661 | }; | |
662 | ||
663 | static int version_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 664 | { |
936c8bcd AD |
665 | seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION); |
666 | seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION); | |
667 | return 0; | |
1da177e4 LT |
668 | } |
669 | ||
936c8bcd AD |
670 | static int version_proc_open(struct inode *inode, struct file *file) |
671 | { | |
672 | return single_open(file, version_proc_show, PDE(inode)->data); | |
673 | } | |
674 | ||
675 | static const struct file_operations version_proc_fops = { | |
676 | .owner = THIS_MODULE, | |
677 | .open = version_proc_open, | |
678 | .read = seq_read, | |
679 | .llseek = seq_lseek, | |
680 | .release = single_release, | |
681 | }; | |
682 | ||
1da177e4 LT |
683 | /* proc and module init |
684 | */ | |
685 | ||
686 | #define PROC_TOSHIBA "toshiba" | |
687 | ||
4be44fcd | 688 | static acpi_status __init add_device(void) |
1da177e4 | 689 | { |
936c8bcd AD |
690 | proc_create("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, &lcd_proc_fops); |
691 | proc_create("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, &video_proc_fops); | |
692 | proc_create("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, &fan_proc_fops); | |
693 | proc_create("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, &keys_proc_fops); | |
694 | proc_create("version", S_IRUGO, toshiba_proc_dir, &version_proc_fops); | |
1da177e4 LT |
695 | |
696 | return AE_OK; | |
697 | } | |
698 | ||
b1d93de3 | 699 | static acpi_status remove_device(void) |
1da177e4 | 700 | { |
936c8bcd AD |
701 | remove_proc_entry("lcd", toshiba_proc_dir); |
702 | remove_proc_entry("video", toshiba_proc_dir); | |
703 | remove_proc_entry("fan", toshiba_proc_dir); | |
704 | remove_proc_entry("keys", toshiba_proc_dir); | |
705 | remove_proc_entry("version", toshiba_proc_dir); | |
1da177e4 LT |
706 | return AE_OK; |
707 | } | |
708 | ||
599a52d1 | 709 | static struct backlight_ops toshiba_backlight_data = { |
c9263557 HM |
710 | .get_brightness = get_lcd, |
711 | .update_status = set_lcd_status, | |
c9263557 HM |
712 | }; |
713 | ||
b2b77b23 | 714 | static void toshiba_acpi_exit(void) |
c9263557 | 715 | { |
19d337df JB |
716 | if (toshiba_acpi.bt_rfk) { |
717 | rfkill_unregister(toshiba_acpi.bt_rfk); | |
718 | rfkill_destroy(toshiba_acpi.bt_rfk); | |
c41a40c5 | 719 | } |
720 | ||
c9263557 HM |
721 | if (toshiba_backlight_device) |
722 | backlight_device_unregister(toshiba_backlight_device); | |
723 | ||
724 | remove_device(); | |
725 | ||
726 | if (toshiba_proc_dir) | |
727 | remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); | |
728 | ||
c41a40c5 | 729 | platform_device_unregister(toshiba_acpi.p_dev); |
730 | ||
c9263557 HM |
731 | return; |
732 | } | |
733 | ||
4be44fcd | 734 | static int __init toshiba_acpi_init(void) |
1da177e4 LT |
735 | { |
736 | acpi_status status = AE_OK; | |
737 | u32 hci_result; | |
c41a40c5 | 738 | bool bt_present; |
c41a40c5 | 739 | int ret = 0; |
1da177e4 LT |
740 | |
741 | if (acpi_disabled) | |
742 | return -ENODEV; | |
fb9802fa | 743 | |
1da177e4 LT |
744 | /* simple device detection: look for HCI method */ |
745 | if (is_valid_acpi_path(METHOD_HCI_1)) | |
746 | method_hci = METHOD_HCI_1; | |
747 | else if (is_valid_acpi_path(METHOD_HCI_2)) | |
748 | method_hci = METHOD_HCI_2; | |
749 | else | |
750 | return -ENODEV; | |
751 | ||
752 | printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n", | |
4be44fcd | 753 | TOSHIBA_ACPI_VERSION); |
1da177e4 LT |
754 | printk(MY_INFO " HCI method: %s\n", method_hci); |
755 | ||
c41a40c5 | 756 | mutex_init(&toshiba_acpi.mutex); |
757 | ||
758 | toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi", | |
759 | -1, NULL, 0); | |
760 | if (IS_ERR(toshiba_acpi.p_dev)) { | |
761 | ret = PTR_ERR(toshiba_acpi.p_dev); | |
762 | printk(MY_ERR "unable to register platform device\n"); | |
763 | toshiba_acpi.p_dev = NULL; | |
764 | toshiba_acpi_exit(); | |
765 | return ret; | |
766 | } | |
767 | ||
1da177e4 LT |
768 | force_fan = 0; |
769 | key_event_valid = 0; | |
770 | ||
771 | /* enable event fifo */ | |
772 | hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result); | |
773 | ||
774 | toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir); | |
775 | if (!toshiba_proc_dir) { | |
c41a40c5 | 776 | toshiba_acpi_exit(); |
777 | return -ENODEV; | |
1da177e4 | 778 | } else { |
1da177e4 | 779 | status = add_device(); |
c41a40c5 | 780 | if (ACPI_FAILURE(status)) { |
781 | toshiba_acpi_exit(); | |
782 | return -ENODEV; | |
783 | } | |
1da177e4 LT |
784 | } |
785 | ||
c41a40c5 | 786 | toshiba_backlight_device = backlight_device_register("toshiba", |
787 | &toshiba_acpi.p_dev->dev, | |
519ab5f2 | 788 | NULL, |
c9263557 HM |
789 | &toshiba_backlight_data); |
790 | if (IS_ERR(toshiba_backlight_device)) { | |
c41a40c5 | 791 | ret = PTR_ERR(toshiba_backlight_device); |
1299342b | 792 | |
c9263557 HM |
793 | printk(KERN_ERR "Could not register toshiba backlight device\n"); |
794 | toshiba_backlight_device = NULL; | |
795 | toshiba_acpi_exit(); | |
1299342b | 796 | return ret; |
c9263557 | 797 | } |
599a52d1 | 798 | toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; |
1da177e4 | 799 | |
c41a40c5 | 800 | /* Register rfkill switch for Bluetooth */ |
801 | if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) { | |
19d337df JB |
802 | toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name, |
803 | &toshiba_acpi.p_dev->dev, | |
804 | RFKILL_TYPE_BLUETOOTH, | |
805 | &toshiba_rfk_ops, | |
806 | &toshiba_acpi); | |
807 | if (!toshiba_acpi.bt_rfk) { | |
c41a40c5 | 808 | printk(MY_ERR "unable to allocate rfkill device\n"); |
809 | toshiba_acpi_exit(); | |
810 | return -ENOMEM; | |
811 | } | |
812 | ||
19d337df | 813 | ret = rfkill_register(toshiba_acpi.bt_rfk); |
c41a40c5 | 814 | if (ret) { |
815 | printk(MY_ERR "unable to register rfkill device\n"); | |
19d337df | 816 | rfkill_destroy(toshiba_acpi.bt_rfk); |
38aefbc5 FD |
817 | toshiba_acpi_exit(); |
818 | return ret; | |
819 | } | |
c41a40c5 | 820 | } |
821 | ||
822 | return 0; | |
1da177e4 LT |
823 | } |
824 | ||
825 | module_init(toshiba_acpi_init); | |
826 | module_exit(toshiba_acpi_exit); |