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Commit | Line | Data |
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7f09c432 SP |
1 | /* |
2 | * ACPI Sony Notebook Control Driver (SNC) | |
3 | * | |
4 | * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net> | |
ed3aa4b7 | 5 | * Copyright (C) 2007 Mattia Dongili <malattia@linux.it> |
7f09c432 SP |
6 | * |
7 | * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c | |
8 | * which are copyrighted by their respective authors. | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/moduleparam.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
50f62afb | 31 | #include <linux/backlight.h> |
ed3aa4b7 | 32 | #include <linux/platform_device.h> |
50f62afb | 33 | #include <linux/err.h> |
7f09c432 SP |
34 | #include <acpi/acpi_drivers.h> |
35 | #include <acpi/acpi_bus.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
38 | #define ACPI_SNC_CLASS "sony" | |
39 | #define ACPI_SNC_HID "SNY5001" | |
ed3aa4b7 | 40 | #define ACPI_SNC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4" |
50f62afb AG |
41 | |
42 | /* the device uses 1-based values, while the backlight subsystem uses | |
43 | 0-based values */ | |
44 | #define SONY_MAX_BRIGHTNESS 8 | |
7f09c432 | 45 | |
ed3aa4b7 | 46 | #define LOG_PFX KERN_WARNING "sony-laptop: " |
7f09c432 | 47 | |
ed3aa4b7 | 48 | MODULE_AUTHOR("Stelian Pop, Mattia Dongili"); |
7f09c432 SP |
49 | MODULE_DESCRIPTION(ACPI_SNC_DRIVER_NAME); |
50 | MODULE_LICENSE("GPL"); | |
51 | ||
52 | static int debug; | |
53 | module_param(debug, int, 0); | |
54 | MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help " | |
a02d1c1d | 55 | "the development of this driver"); |
7f09c432 | 56 | |
a02d1c1d LB |
57 | static ssize_t sony_acpi_show(struct device *, struct device_attribute *, |
58 | char *); | |
59 | static ssize_t sony_acpi_store(struct device *, struct device_attribute *, | |
60 | const char *, size_t); | |
156c221b MD |
61 | static int boolean_validate(const int, const int); |
62 | static int brightness_default_validate(const int, const int); | |
63 | ||
64 | #define SNC_VALIDATE_IN 0 | |
65 | #define SNC_VALIDATE_OUT 1 | |
ed3aa4b7 MD |
66 | |
67 | struct sony_acpi_value { | |
a02d1c1d LB |
68 | char *name; /* name of the entry */ |
69 | char **acpiget; /* names of the ACPI get function */ | |
70 | char **acpiset; /* names of the ACPI set function */ | |
156c221b | 71 | int (*validate)(const int, const int); /* input/output validation */ |
a02d1c1d LB |
72 | int value; /* current setting */ |
73 | int valid; /* Has ever been set */ | |
74 | int debug; /* active only in debug mode ? */ | |
75 | struct device_attribute devattr; /* sysfs atribute */ | |
ed3aa4b7 MD |
76 | }; |
77 | ||
78 | #define HANDLE_NAMES(_name, _values...) \ | |
79 | static char *snc_##_name[] = { _values, NULL } | |
80 | ||
156c221b | 81 | #define SONY_ACPI_VALUE(_name, _getters, _setters, _validate, _debug) \ |
ed3aa4b7 MD |
82 | { \ |
83 | .name = __stringify(_name), \ | |
84 | .acpiget = _getters, \ | |
85 | .acpiset = _setters, \ | |
156c221b | 86 | .validate = _validate, \ |
ed3aa4b7 MD |
87 | .debug = _debug, \ |
88 | .devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \ | |
7f09c432 | 89 | } |
ed3aa4b7 MD |
90 | |
91 | #define SONY_ACPI_VALUE_NULL { .name = NULL } | |
92 | ||
93 | HANDLE_NAMES(fnkey_get, "GHKE"); | |
94 | ||
95 | HANDLE_NAMES(brightness_def_get, "GPBR"); | |
96 | HANDLE_NAMES(brightness_def_set, "SPBR"); | |
97 | ||
98 | HANDLE_NAMES(cdpower_get, "GCDP"); | |
99 | HANDLE_NAMES(cdpower_set, "SCDP", "CDPW"); | |
100 | ||
101 | HANDLE_NAMES(audiopower_get, "GAZP"); | |
102 | HANDLE_NAMES(audiopower_set, "AZPW"); | |
103 | ||
104 | HANDLE_NAMES(lanpower_get, "GLNP"); | |
105 | HANDLE_NAMES(lanpower_set, "LNPW"); | |
106 | ||
107 | HANDLE_NAMES(PID_get, "GPID"); | |
108 | ||
109 | HANDLE_NAMES(CTR_get, "GCTR"); | |
110 | HANDLE_NAMES(CTR_set, "SCTR"); | |
111 | ||
112 | HANDLE_NAMES(PCR_get, "GPCR"); | |
113 | HANDLE_NAMES(PCR_set, "SPCR"); | |
114 | ||
115 | HANDLE_NAMES(CMI_get, "GCMI"); | |
116 | HANDLE_NAMES(CMI_set, "SCMI"); | |
117 | ||
118 | static struct sony_acpi_value sony_acpi_values[] = { | |
a02d1c1d | 119 | SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get, |
156c221b MD |
120 | snc_brightness_def_set, brightness_default_validate, 0), |
121 | SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, NULL, 0), | |
122 | SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0), | |
123 | SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set, | |
124 | boolean_validate, 0), | |
125 | SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set, | |
126 | boolean_validate, 1), | |
ed3aa4b7 | 127 | /* unknown methods */ |
156c221b MD |
128 | SONY_ACPI_VALUE(PID, snc_PID_get, NULL, NULL, 1), |
129 | SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1), | |
130 | SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1), | |
131 | SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1), | |
ed3aa4b7 | 132 | SONY_ACPI_VALUE_NULL |
7f09c432 SP |
133 | }; |
134 | ||
ed3aa4b7 MD |
135 | static acpi_handle sony_acpi_handle; |
136 | static struct acpi_device *sony_acpi_acpi_device = NULL; | |
137 | ||
d78865cd MD |
138 | /* |
139 | * acpi_evaluate_object wrappers | |
140 | */ | |
7f09c432 SP |
141 | static int acpi_callgetfunc(acpi_handle handle, char *name, int *result) |
142 | { | |
143 | struct acpi_buffer output; | |
144 | union acpi_object out_obj; | |
145 | acpi_status status; | |
146 | ||
147 | output.length = sizeof(out_obj); | |
148 | output.pointer = &out_obj; | |
149 | ||
150 | status = acpi_evaluate_object(handle, name, NULL, &output); | |
151 | if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) { | |
152 | *result = out_obj.integer.value; | |
153 | return 0; | |
154 | } | |
155 | ||
156 | printk(LOG_PFX "acpi_callreadfunc failed\n"); | |
157 | ||
158 | return -1; | |
159 | } | |
160 | ||
161 | static int acpi_callsetfunc(acpi_handle handle, char *name, int value, | |
162 | int *result) | |
163 | { | |
164 | struct acpi_object_list params; | |
165 | union acpi_object in_obj; | |
166 | struct acpi_buffer output; | |
167 | union acpi_object out_obj; | |
168 | acpi_status status; | |
169 | ||
170 | params.count = 1; | |
171 | params.pointer = &in_obj; | |
172 | in_obj.type = ACPI_TYPE_INTEGER; | |
173 | in_obj.integer.value = value; | |
174 | ||
175 | output.length = sizeof(out_obj); | |
176 | output.pointer = &out_obj; | |
177 | ||
178 | status = acpi_evaluate_object(handle, name, ¶ms, &output); | |
179 | if (status == AE_OK) { | |
180 | if (result != NULL) { | |
181 | if (out_obj.type != ACPI_TYPE_INTEGER) { | |
182 | printk(LOG_PFX "acpi_evaluate_object bad " | |
183 | "return type\n"); | |
184 | return -1; | |
185 | } | |
186 | *result = out_obj.integer.value; | |
187 | } | |
188 | return 0; | |
189 | } | |
190 | ||
191 | printk(LOG_PFX "acpi_evaluate_object failed\n"); | |
192 | ||
193 | return -1; | |
194 | } | |
195 | ||
156c221b MD |
196 | /* |
197 | * sony_acpi_values input/output validate functions | |
198 | */ | |
199 | ||
200 | /* brightness_default_validate: | |
201 | * | |
202 | * manipulate input output values to keep consistency with the | |
203 | * backlight framework for which brightness values are 0-based. | |
204 | */ | |
205 | static int brightness_default_validate(const int direction, const int value) | |
206 | { | |
207 | switch (direction) { | |
208 | case SNC_VALIDATE_OUT: | |
209 | return value - 1; | |
210 | case SNC_VALIDATE_IN: | |
211 | if (value >= 0 && value < SONY_MAX_BRIGHTNESS) | |
212 | return value + 1; | |
213 | } | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | /* boolean_validate: | |
218 | * | |
219 | * on input validate boolean values 0/1, on output just pass the | |
220 | * received value. | |
221 | */ | |
222 | static int boolean_validate(const int direction, const int value) | |
223 | { | |
224 | if (direction == SNC_VALIDATE_IN) { | |
225 | if (value != 0 && value != 1) | |
226 | return -EINVAL; | |
227 | } | |
228 | return value; | |
229 | } | |
230 | ||
ed3aa4b7 MD |
231 | /* |
232 | * Sysfs show/store common to all sony_acpi_values | |
233 | */ | |
234 | static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr, | |
a02d1c1d | 235 | char *buffer) |
7f09c432 | 236 | { |
7f09c432 | 237 | int value; |
a02d1c1d LB |
238 | struct sony_acpi_value *item = |
239 | container_of(attr, struct sony_acpi_value, devattr); | |
7f09c432 | 240 | |
ed3aa4b7 | 241 | if (!*item->acpiget) |
7f09c432 SP |
242 | return -EIO; |
243 | ||
ed3aa4b7 | 244 | if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0) |
7f09c432 SP |
245 | return -EIO; |
246 | ||
156c221b MD |
247 | if (item->validate) |
248 | value = item->validate(SNC_VALIDATE_OUT, value); | |
249 | ||
ed3aa4b7 | 250 | return snprintf(buffer, PAGE_SIZE, "%d\n", value); |
7f09c432 SP |
251 | } |
252 | ||
a02d1c1d LB |
253 | static ssize_t sony_acpi_store(struct device *dev, |
254 | struct device_attribute *attr, | |
255 | const char *buffer, size_t count) | |
7f09c432 | 256 | { |
7f09c432 | 257 | int value; |
a02d1c1d LB |
258 | struct sony_acpi_value *item = |
259 | container_of(attr, struct sony_acpi_value, devattr); | |
7f09c432 SP |
260 | |
261 | if (!item->acpiset) | |
262 | return -EIO; | |
263 | ||
ed3aa4b7 MD |
264 | if (count > 31) |
265 | return -EINVAL; | |
266 | ||
267 | value = simple_strtoul(buffer, NULL, 10); | |
7f09c432 | 268 | |
156c221b MD |
269 | if (item->validate) |
270 | value = item->validate(SNC_VALIDATE_IN, value); | |
271 | ||
272 | if (value < 0) | |
273 | return value; | |
7f09c432 | 274 | |
ed3aa4b7 | 275 | if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0) |
7f09c432 | 276 | return -EIO; |
3f4f461f AM |
277 | item->value = value; |
278 | item->valid = 1; | |
7f09c432 SP |
279 | return count; |
280 | } | |
281 | ||
ed3aa4b7 MD |
282 | /* |
283 | * Platform device | |
284 | */ | |
285 | static struct platform_driver sncpf_driver = { | |
286 | .driver = { | |
a02d1c1d LB |
287 | .name = "sony-laptop", |
288 | .owner = THIS_MODULE, | |
289 | } | |
ed3aa4b7 MD |
290 | }; |
291 | static struct platform_device *sncpf_device; | |
292 | ||
293 | static int sony_snc_pf_add(void) | |
294 | { | |
295 | acpi_handle handle; | |
296 | struct sony_acpi_value *item; | |
297 | int ret = 0; | |
298 | ||
299 | ret = platform_driver_register(&sncpf_driver); | |
300 | if (ret) | |
301 | goto out; | |
302 | ||
303 | sncpf_device = platform_device_alloc("sony-laptop", -1); | |
304 | if (!sncpf_device) { | |
305 | ret = -ENOMEM; | |
306 | goto out_platform_registered; | |
307 | } | |
308 | ||
309 | ret = platform_device_add(sncpf_device); | |
310 | if (ret) | |
311 | goto out_platform_alloced; | |
312 | ||
313 | for (item = sony_acpi_values; item->name; ++item) { | |
314 | ||
315 | if (!debug && item->debug) | |
316 | continue; | |
317 | ||
318 | /* find the available acpiget as described in the DSDT */ | |
319 | for (; item->acpiget && *item->acpiget; ++item->acpiget) { | |
320 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, | |
a02d1c1d LB |
321 | *item->acpiget, |
322 | &handle))) { | |
ed3aa4b7 MD |
323 | if (debug) |
324 | printk(LOG_PFX "Found %s getter: %s\n", | |
a02d1c1d | 325 | item->name, *item->acpiget); |
ed3aa4b7 MD |
326 | item->devattr.attr.mode |= S_IRUGO; |
327 | break; | |
328 | } | |
329 | } | |
330 | ||
331 | /* find the available acpiset as described in the DSDT */ | |
332 | for (; item->acpiset && *item->acpiset; ++item->acpiset) { | |
333 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, | |
a02d1c1d LB |
334 | *item->acpiset, |
335 | &handle))) { | |
ed3aa4b7 MD |
336 | if (debug) |
337 | printk(LOG_PFX "Found %s setter: %s\n", | |
a02d1c1d | 338 | item->name, *item->acpiset); |
ed3aa4b7 MD |
339 | item->devattr.attr.mode |= S_IWUSR; |
340 | break; | |
341 | } | |
342 | } | |
343 | ||
a02d1c1d LB |
344 | if (item->devattr.attr.mode != 0) { |
345 | ret = | |
346 | device_create_file(&sncpf_device->dev, | |
347 | &item->devattr); | |
348 | if (ret) | |
349 | goto out_sysfs; | |
350 | } | |
ed3aa4b7 MD |
351 | } |
352 | ||
353 | return 0; | |
354 | ||
a02d1c1d | 355 | out_sysfs: |
ed3aa4b7 MD |
356 | for (item = sony_acpi_values; item->name; ++item) { |
357 | device_remove_file(&sncpf_device->dev, &item->devattr); | |
358 | } | |
359 | platform_device_del(sncpf_device); | |
a02d1c1d | 360 | out_platform_alloced: |
ed3aa4b7 | 361 | platform_device_put(sncpf_device); |
a02d1c1d | 362 | out_platform_registered: |
ed3aa4b7 | 363 | platform_driver_unregister(&sncpf_driver); |
a02d1c1d | 364 | out: |
ed3aa4b7 MD |
365 | return ret; |
366 | } | |
367 | ||
368 | static void sony_snc_pf_remove(void) | |
369 | { | |
370 | struct sony_acpi_value *item; | |
371 | ||
372 | for (item = sony_acpi_values; item->name; ++item) { | |
373 | device_remove_file(&sncpf_device->dev, &item->devattr); | |
374 | } | |
375 | ||
376 | platform_device_del(sncpf_device); | |
377 | platform_device_put(sncpf_device); | |
378 | platform_driver_unregister(&sncpf_driver); | |
379 | } | |
380 | ||
d78865cd MD |
381 | /* |
382 | * Backlight device | |
383 | */ | |
384 | static int sony_backlight_update_status(struct backlight_device *bd) | |
3f4f461f | 385 | { |
d78865cd | 386 | return acpi_callsetfunc(sony_acpi_handle, "SBRT", |
a02d1c1d | 387 | bd->props->brightness + 1, NULL); |
d78865cd | 388 | } |
3f4f461f | 389 | |
d78865cd MD |
390 | static int sony_backlight_get_brightness(struct backlight_device *bd) |
391 | { | |
392 | int value; | |
3f4f461f | 393 | |
d78865cd MD |
394 | if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value)) |
395 | return 0; | |
396 | /* brightness levels are 1-based, while backlight ones are 0-based */ | |
397 | return value - 1; | |
3f4f461f AM |
398 | } |
399 | ||
d78865cd MD |
400 | static struct backlight_device *sony_backlight_device; |
401 | static struct backlight_properties sony_backlight_properties = { | |
a02d1c1d LB |
402 | .update_status = sony_backlight_update_status, |
403 | .get_brightness = sony_backlight_get_brightness, | |
404 | .max_brightness = SONY_MAX_BRIGHTNESS - 1, | |
d78865cd MD |
405 | }; |
406 | ||
407 | /* | |
408 | * ACPI callbacks | |
409 | */ | |
7f09c432 SP |
410 | static void sony_acpi_notify(acpi_handle handle, u32 event, void *data) |
411 | { | |
c561162f SP |
412 | if (debug) |
413 | printk(LOG_PFX "sony_acpi_notify, event: %d\n", event); | |
414 | acpi_bus_generate_event(sony_acpi_acpi_device, 1, event); | |
7f09c432 SP |
415 | } |
416 | ||
417 | static acpi_status sony_walk_callback(acpi_handle handle, u32 level, | |
418 | void *context, void **return_value) | |
419 | { | |
420 | struct acpi_namespace_node *node; | |
421 | union acpi_operand_object *operand; | |
422 | ||
a02d1c1d LB |
423 | node = (struct acpi_namespace_node *)handle; |
424 | operand = (union acpi_operand_object *)node->object; | |
7f09c432 SP |
425 | |
426 | printk(LOG_PFX "method: name: %4.4s, args %X\n", node->name.ascii, | |
427 | (u32) operand->method.param_count); | |
428 | ||
429 | return AE_OK; | |
430 | } | |
431 | ||
d78865cd MD |
432 | /* |
433 | * ACPI device | |
434 | */ | |
435 | static int sony_acpi_resume(struct acpi_device *device) | |
436 | { | |
437 | struct sony_acpi_value *item; | |
438 | ||
439 | for (item = sony_acpi_values; item->name; item++) { | |
440 | int ret; | |
441 | ||
442 | if (!item->valid) | |
443 | continue; | |
444 | ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset, | |
a02d1c1d | 445 | item->value, NULL); |
d78865cd MD |
446 | if (ret < 0) { |
447 | printk("%s: %d\n", __FUNCTION__, ret); | |
448 | break; | |
449 | } | |
450 | } | |
451 | return 0; | |
452 | } | |
453 | ||
7f09c432 SP |
454 | static int sony_acpi_add(struct acpi_device *device) |
455 | { | |
456 | acpi_status status; | |
457 | int result; | |
50f62afb | 458 | acpi_handle handle; |
7f09c432 | 459 | |
c561162f SP |
460 | sony_acpi_acpi_device = device; |
461 | ||
7f09c432 SP |
462 | sony_acpi_handle = device->handle; |
463 | ||
7f09c432 SP |
464 | if (debug) { |
465 | status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle, | |
466 | 1, sony_walk_callback, NULL, NULL); | |
467 | if (ACPI_FAILURE(status)) { | |
468 | printk(LOG_PFX "unable to walk acpi resources\n"); | |
469 | result = -ENODEV; | |
470 | goto outwalk; | |
471 | } | |
c561162f | 472 | } |
7f09c432 | 473 | |
c561162f SP |
474 | status = acpi_install_notify_handler(sony_acpi_handle, |
475 | ACPI_DEVICE_NOTIFY, | |
a02d1c1d | 476 | sony_acpi_notify, NULL); |
c561162f SP |
477 | if (ACPI_FAILURE(status)) { |
478 | printk(LOG_PFX "unable to install notify handler\n"); | |
479 | result = -ENODEV; | |
ed3aa4b7 | 480 | goto outwalk; |
7f09c432 SP |
481 | } |
482 | ||
50f62afb AG |
483 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) { |
484 | sony_backlight_device = backlight_device_register("sony", NULL, | |
a02d1c1d LB |
485 | NULL, |
486 | &sony_backlight_properties); | |
7df03b82 | 487 | |
a02d1c1d | 488 | if (IS_ERR(sony_backlight_device)) { |
91fbc1d3 | 489 | printk(LOG_PFX "unable to register backlight device\n"); |
7df03b82 | 490 | sony_backlight_device = NULL; |
a02d1c1d | 491 | } else |
7df03b82 | 492 | sony_backlight_properties.brightness = |
a02d1c1d LB |
493 | sony_backlight_get_brightness |
494 | (sony_backlight_device); | |
50f62afb | 495 | } |
7f09c432 | 496 | |
ed3aa4b7 MD |
497 | if (sony_snc_pf_add()) |
498 | goto outbacklight; | |
7f09c432 SP |
499 | |
500 | printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n"); | |
501 | ||
502 | return 0; | |
503 | ||
a02d1c1d | 504 | outbacklight: |
7df03b82 MD |
505 | if (sony_backlight_device) |
506 | backlight_device_unregister(sony_backlight_device); | |
507 | ||
c561162f SP |
508 | status = acpi_remove_notify_handler(sony_acpi_handle, |
509 | ACPI_DEVICE_NOTIFY, | |
510 | sony_acpi_notify); | |
511 | if (ACPI_FAILURE(status)) | |
512 | printk(LOG_PFX "unable to remove notify handler\n"); | |
a02d1c1d | 513 | outwalk: |
7f09c432 SP |
514 | return result; |
515 | } | |
516 | ||
7f09c432 SP |
517 | static int sony_acpi_remove(struct acpi_device *device, int type) |
518 | { | |
519 | acpi_status status; | |
7f09c432 | 520 | |
50f62afb AG |
521 | if (sony_backlight_device) |
522 | backlight_device_unregister(sony_backlight_device); | |
523 | ||
c561162f SP |
524 | sony_acpi_acpi_device = NULL; |
525 | ||
526 | status = acpi_remove_notify_handler(sony_acpi_handle, | |
527 | ACPI_DEVICE_NOTIFY, | |
528 | sony_acpi_notify); | |
529 | if (ACPI_FAILURE(status)) | |
530 | printk(LOG_PFX "unable to remove notify handler\n"); | |
7f09c432 | 531 | |
ed3aa4b7 | 532 | sony_snc_pf_remove(); |
7f09c432 SP |
533 | |
534 | printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n"); | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
3f4f461f | 539 | static struct acpi_driver sony_acpi_driver = { |
a02d1c1d LB |
540 | .name = ACPI_SNC_DRIVER_NAME, |
541 | .class = ACPI_SNC_CLASS, | |
542 | .ids = ACPI_SNC_HID, | |
543 | .ops = { | |
544 | .add = sony_acpi_add, | |
545 | .remove = sony_acpi_remove, | |
546 | .resume = sony_acpi_resume, | |
547 | }, | |
3f4f461f AM |
548 | }; |
549 | ||
7f09c432 SP |
550 | static int __init sony_acpi_init(void) |
551 | { | |
ed3aa4b7 | 552 | return acpi_bus_register_driver(&sony_acpi_driver); |
7f09c432 SP |
553 | } |
554 | ||
7f09c432 SP |
555 | static void __exit sony_acpi_exit(void) |
556 | { | |
557 | acpi_bus_unregister_driver(&sony_acpi_driver); | |
7f09c432 SP |
558 | } |
559 | ||
560 | module_init(sony_acpi_init); | |
561 | module_exit(sony_acpi_exit); |