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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 " | |
55 | "the development of this driver"); | |
56 | ||
ed3aa4b7 MD |
57 | static ssize_t sony_acpi_show(struct device *, struct device_attribute *, char *); |
58 | static ssize_t sony_acpi_store(struct device *, struct device_attribute *, const char *, size_t); | |
59 | ||
60 | struct sony_acpi_value { | |
61 | char *name; /* name of the entry */ | |
62 | char **acpiget; /* names of the ACPI get function */ | |
63 | char **acpiset; /* names of the ACPI set function */ | |
64 | int min; /* minimum allowed value or -1 */ | |
65 | int max; /* maximum allowed value or -1 */ | |
66 | int value; /* current setting */ | |
67 | int valid; /* Has ever been set */ | |
68 | int debug; /* active only in debug mode ? */ | |
69 | struct device_attribute devattr; /* sysfs atribute */ | |
70 | }; | |
71 | ||
72 | #define HANDLE_NAMES(_name, _values...) \ | |
73 | static char *snc_##_name[] = { _values, NULL } | |
74 | ||
75 | #define SONY_ACPI_VALUE(_name, _getters, _setters, _min, _max, _debug) \ | |
76 | { \ | |
77 | .name = __stringify(_name), \ | |
78 | .acpiget = _getters, \ | |
79 | .acpiset = _setters, \ | |
80 | .min = _min, \ | |
81 | .max = _max, \ | |
82 | .debug = _debug, \ | |
83 | .devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \ | |
7f09c432 | 84 | } |
ed3aa4b7 MD |
85 | |
86 | #define SONY_ACPI_VALUE_NULL { .name = NULL } | |
87 | ||
88 | HANDLE_NAMES(fnkey_get, "GHKE"); | |
89 | ||
90 | HANDLE_NAMES(brightness_def_get, "GPBR"); | |
91 | HANDLE_NAMES(brightness_def_set, "SPBR"); | |
92 | ||
93 | HANDLE_NAMES(cdpower_get, "GCDP"); | |
94 | HANDLE_NAMES(cdpower_set, "SCDP", "CDPW"); | |
95 | ||
96 | HANDLE_NAMES(audiopower_get, "GAZP"); | |
97 | HANDLE_NAMES(audiopower_set, "AZPW"); | |
98 | ||
99 | HANDLE_NAMES(lanpower_get, "GLNP"); | |
100 | HANDLE_NAMES(lanpower_set, "LNPW"); | |
101 | ||
102 | HANDLE_NAMES(PID_get, "GPID"); | |
103 | ||
104 | HANDLE_NAMES(CTR_get, "GCTR"); | |
105 | HANDLE_NAMES(CTR_set, "SCTR"); | |
106 | ||
107 | HANDLE_NAMES(PCR_get, "GPCR"); | |
108 | HANDLE_NAMES(PCR_set, "SPCR"); | |
109 | ||
110 | HANDLE_NAMES(CMI_get, "GCMI"); | |
111 | HANDLE_NAMES(CMI_set, "SCMI"); | |
112 | ||
113 | static struct sony_acpi_value sony_acpi_values[] = { | |
114 | SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get, snc_brightness_def_set, 1, SONY_MAX_BRIGHTNESS, 0), | |
115 | SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, -1, -1, 0), | |
116 | SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, 0, 1, 0), | |
117 | SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set, 0, 1, 0), | |
118 | SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set, 0, 1, 1), | |
119 | /* unknown methods */ | |
120 | SONY_ACPI_VALUE(PID, snc_PID_get, NULL, -1, -1, 1), | |
121 | SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, -1, -1, 1), | |
122 | SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, -1, -1, 1), | |
123 | SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, -1, -1, 1), | |
124 | SONY_ACPI_VALUE_NULL | |
7f09c432 SP |
125 | }; |
126 | ||
ed3aa4b7 MD |
127 | static acpi_handle sony_acpi_handle; |
128 | static struct acpi_device *sony_acpi_acpi_device = NULL; | |
129 | ||
d78865cd MD |
130 | /* |
131 | * acpi_evaluate_object wrappers | |
132 | */ | |
7f09c432 SP |
133 | static int acpi_callgetfunc(acpi_handle handle, char *name, int *result) |
134 | { | |
135 | struct acpi_buffer output; | |
136 | union acpi_object out_obj; | |
137 | acpi_status status; | |
138 | ||
139 | output.length = sizeof(out_obj); | |
140 | output.pointer = &out_obj; | |
141 | ||
142 | status = acpi_evaluate_object(handle, name, NULL, &output); | |
143 | if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) { | |
144 | *result = out_obj.integer.value; | |
145 | return 0; | |
146 | } | |
147 | ||
148 | printk(LOG_PFX "acpi_callreadfunc failed\n"); | |
149 | ||
150 | return -1; | |
151 | } | |
152 | ||
153 | static int acpi_callsetfunc(acpi_handle handle, char *name, int value, | |
154 | int *result) | |
155 | { | |
156 | struct acpi_object_list params; | |
157 | union acpi_object in_obj; | |
158 | struct acpi_buffer output; | |
159 | union acpi_object out_obj; | |
160 | acpi_status status; | |
161 | ||
162 | params.count = 1; | |
163 | params.pointer = &in_obj; | |
164 | in_obj.type = ACPI_TYPE_INTEGER; | |
165 | in_obj.integer.value = value; | |
166 | ||
167 | output.length = sizeof(out_obj); | |
168 | output.pointer = &out_obj; | |
169 | ||
170 | status = acpi_evaluate_object(handle, name, ¶ms, &output); | |
171 | if (status == AE_OK) { | |
172 | if (result != NULL) { | |
173 | if (out_obj.type != ACPI_TYPE_INTEGER) { | |
174 | printk(LOG_PFX "acpi_evaluate_object bad " | |
175 | "return type\n"); | |
176 | return -1; | |
177 | } | |
178 | *result = out_obj.integer.value; | |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
183 | printk(LOG_PFX "acpi_evaluate_object failed\n"); | |
184 | ||
185 | return -1; | |
186 | } | |
187 | ||
ed3aa4b7 MD |
188 | /* |
189 | * Sysfs show/store common to all sony_acpi_values | |
190 | */ | |
191 | static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr, | |
192 | char *buffer) | |
7f09c432 | 193 | { |
7f09c432 | 194 | int value; |
ed3aa4b7 | 195 | struct sony_acpi_value *item = container_of(attr, struct sony_acpi_value, devattr); |
7f09c432 | 196 | |
ed3aa4b7 | 197 | if (!*item->acpiget) |
7f09c432 SP |
198 | return -EIO; |
199 | ||
ed3aa4b7 | 200 | if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0) |
7f09c432 SP |
201 | return -EIO; |
202 | ||
ed3aa4b7 | 203 | return snprintf(buffer, PAGE_SIZE, "%d\n", value); |
7f09c432 SP |
204 | } |
205 | ||
ed3aa4b7 MD |
206 | static ssize_t sony_acpi_store(struct device *dev, struct device_attribute *attr, |
207 | const char *buffer, size_t count) | |
7f09c432 | 208 | { |
7f09c432 | 209 | int value; |
ed3aa4b7 | 210 | struct sony_acpi_value *item = container_of(attr, struct sony_acpi_value, devattr); |
7f09c432 SP |
211 | |
212 | if (!item->acpiset) | |
213 | return -EIO; | |
214 | ||
ed3aa4b7 MD |
215 | if (count > 31) |
216 | return -EINVAL; | |
217 | ||
218 | value = simple_strtoul(buffer, NULL, 10); | |
7f09c432 SP |
219 | |
220 | if (item->min != -1 && value < item->min) | |
221 | return -EINVAL; | |
222 | if (item->max != -1 && value > item->max) | |
223 | return -EINVAL; | |
224 | ||
ed3aa4b7 | 225 | if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0) |
7f09c432 | 226 | return -EIO; |
3f4f461f AM |
227 | item->value = value; |
228 | item->valid = 1; | |
7f09c432 SP |
229 | return count; |
230 | } | |
231 | ||
ed3aa4b7 MD |
232 | /* |
233 | * Platform device | |
234 | */ | |
235 | static struct platform_driver sncpf_driver = { | |
236 | .driver = { | |
237 | .name = "sony-laptop", | |
238 | .owner = THIS_MODULE, | |
239 | } | |
240 | }; | |
241 | static struct platform_device *sncpf_device; | |
242 | ||
243 | static int sony_snc_pf_add(void) | |
244 | { | |
245 | acpi_handle handle; | |
246 | struct sony_acpi_value *item; | |
247 | int ret = 0; | |
248 | ||
249 | ret = platform_driver_register(&sncpf_driver); | |
250 | if (ret) | |
251 | goto out; | |
252 | ||
253 | sncpf_device = platform_device_alloc("sony-laptop", -1); | |
254 | if (!sncpf_device) { | |
255 | ret = -ENOMEM; | |
256 | goto out_platform_registered; | |
257 | } | |
258 | ||
259 | ret = platform_device_add(sncpf_device); | |
260 | if (ret) | |
261 | goto out_platform_alloced; | |
262 | ||
263 | for (item = sony_acpi_values; item->name; ++item) { | |
264 | ||
265 | if (!debug && item->debug) | |
266 | continue; | |
267 | ||
268 | /* find the available acpiget as described in the DSDT */ | |
269 | for (; item->acpiget && *item->acpiget; ++item->acpiget) { | |
270 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, | |
271 | *item->acpiget, | |
272 | &handle))) { | |
273 | if (debug) | |
274 | printk(LOG_PFX "Found %s getter: %s\n", | |
275 | item->name, | |
276 | *item->acpiget); | |
277 | item->devattr.attr.mode |= S_IRUGO; | |
278 | break; | |
279 | } | |
280 | } | |
281 | ||
282 | /* find the available acpiset as described in the DSDT */ | |
283 | for (; item->acpiset && *item->acpiset; ++item->acpiset) { | |
284 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, | |
285 | *item->acpiset, | |
286 | &handle))) { | |
287 | if (debug) | |
288 | printk(LOG_PFX "Found %s setter: %s\n", | |
289 | item->name, | |
290 | *item->acpiset); | |
291 | item->devattr.attr.mode |= S_IWUSR; | |
292 | break; | |
293 | } | |
294 | } | |
295 | ||
296 | if (item->devattr.attr.mode != 0) { | |
297 | ret = device_create_file(&sncpf_device->dev, &item->devattr); | |
298 | if (ret) | |
299 | goto out_sysfs; | |
300 | } | |
301 | } | |
302 | ||
303 | return 0; | |
304 | ||
305 | out_sysfs: | |
306 | for (item = sony_acpi_values; item->name; ++item) { | |
307 | device_remove_file(&sncpf_device->dev, &item->devattr); | |
308 | } | |
309 | platform_device_del(sncpf_device); | |
310 | out_platform_alloced: | |
311 | platform_device_put(sncpf_device); | |
312 | out_platform_registered: | |
313 | platform_driver_unregister(&sncpf_driver); | |
314 | out: | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static void sony_snc_pf_remove(void) | |
319 | { | |
320 | struct sony_acpi_value *item; | |
321 | ||
322 | for (item = sony_acpi_values; item->name; ++item) { | |
323 | device_remove_file(&sncpf_device->dev, &item->devattr); | |
324 | } | |
325 | ||
326 | platform_device_del(sncpf_device); | |
327 | platform_device_put(sncpf_device); | |
328 | platform_driver_unregister(&sncpf_driver); | |
329 | } | |
330 | ||
d78865cd MD |
331 | /* |
332 | * Backlight device | |
333 | */ | |
334 | static int sony_backlight_update_status(struct backlight_device *bd) | |
3f4f461f | 335 | { |
d78865cd MD |
336 | return acpi_callsetfunc(sony_acpi_handle, "SBRT", |
337 | bd->props->brightness + 1, | |
338 | NULL); | |
339 | } | |
3f4f461f | 340 | |
d78865cd MD |
341 | static int sony_backlight_get_brightness(struct backlight_device *bd) |
342 | { | |
343 | int value; | |
3f4f461f | 344 | |
d78865cd MD |
345 | if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value)) |
346 | return 0; | |
347 | /* brightness levels are 1-based, while backlight ones are 0-based */ | |
348 | return value - 1; | |
3f4f461f AM |
349 | } |
350 | ||
d78865cd MD |
351 | static struct backlight_device *sony_backlight_device; |
352 | static struct backlight_properties sony_backlight_properties = { | |
353 | .owner = THIS_MODULE, | |
354 | .update_status = sony_backlight_update_status, | |
355 | .get_brightness = sony_backlight_get_brightness, | |
356 | .max_brightness = SONY_MAX_BRIGHTNESS - 1, | |
357 | }; | |
358 | ||
359 | /* | |
360 | * ACPI callbacks | |
361 | */ | |
7f09c432 SP |
362 | static void sony_acpi_notify(acpi_handle handle, u32 event, void *data) |
363 | { | |
c561162f SP |
364 | if (debug) |
365 | printk(LOG_PFX "sony_acpi_notify, event: %d\n", event); | |
366 | acpi_bus_generate_event(sony_acpi_acpi_device, 1, event); | |
7f09c432 SP |
367 | } |
368 | ||
369 | static acpi_status sony_walk_callback(acpi_handle handle, u32 level, | |
370 | void *context, void **return_value) | |
371 | { | |
372 | struct acpi_namespace_node *node; | |
373 | union acpi_operand_object *operand; | |
374 | ||
375 | node = (struct acpi_namespace_node *) handle; | |
376 | operand = (union acpi_operand_object *) node->object; | |
377 | ||
378 | printk(LOG_PFX "method: name: %4.4s, args %X\n", node->name.ascii, | |
379 | (u32) operand->method.param_count); | |
380 | ||
381 | return AE_OK; | |
382 | } | |
383 | ||
d78865cd MD |
384 | /* |
385 | * ACPI device | |
386 | */ | |
387 | static int sony_acpi_resume(struct acpi_device *device) | |
388 | { | |
389 | struct sony_acpi_value *item; | |
390 | ||
391 | for (item = sony_acpi_values; item->name; item++) { | |
392 | int ret; | |
393 | ||
394 | if (!item->valid) | |
395 | continue; | |
396 | ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset, | |
397 | item->value, NULL); | |
398 | if (ret < 0) { | |
399 | printk("%s: %d\n", __FUNCTION__, ret); | |
400 | break; | |
401 | } | |
402 | } | |
403 | return 0; | |
404 | } | |
405 | ||
7f09c432 SP |
406 | static int sony_acpi_add(struct acpi_device *device) |
407 | { | |
408 | acpi_status status; | |
409 | int result; | |
50f62afb | 410 | acpi_handle handle; |
7f09c432 | 411 | |
c561162f SP |
412 | sony_acpi_acpi_device = device; |
413 | ||
7f09c432 SP |
414 | sony_acpi_handle = device->handle; |
415 | ||
7f09c432 SP |
416 | if (debug) { |
417 | status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle, | |
418 | 1, sony_walk_callback, NULL, NULL); | |
419 | if (ACPI_FAILURE(status)) { | |
420 | printk(LOG_PFX "unable to walk acpi resources\n"); | |
421 | result = -ENODEV; | |
422 | goto outwalk; | |
423 | } | |
c561162f | 424 | } |
7f09c432 | 425 | |
c561162f SP |
426 | status = acpi_install_notify_handler(sony_acpi_handle, |
427 | ACPI_DEVICE_NOTIFY, | |
428 | sony_acpi_notify, | |
429 | NULL); | |
430 | if (ACPI_FAILURE(status)) { | |
431 | printk(LOG_PFX "unable to install notify handler\n"); | |
432 | result = -ENODEV; | |
ed3aa4b7 | 433 | goto outwalk; |
7f09c432 SP |
434 | } |
435 | ||
50f62afb AG |
436 | if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) { |
437 | sony_backlight_device = backlight_device_register("sony", NULL, | |
82c47731 | 438 | NULL, &sony_backlight_properties); |
7df03b82 | 439 | |
50f62afb | 440 | if (IS_ERR(sony_backlight_device)) { |
91fbc1d3 | 441 | printk(LOG_PFX "unable to register backlight device\n"); |
7df03b82 | 442 | sony_backlight_device = NULL; |
50f62afb | 443 | } |
7df03b82 MD |
444 | else |
445 | sony_backlight_properties.brightness = | |
446 | sony_backlight_get_brightness(sony_backlight_device); | |
50f62afb | 447 | } |
7f09c432 | 448 | |
ed3aa4b7 MD |
449 | if (sony_snc_pf_add()) |
450 | goto outbacklight; | |
7f09c432 SP |
451 | |
452 | printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n"); | |
453 | ||
454 | return 0; | |
455 | ||
ed3aa4b7 | 456 | outbacklight: |
7df03b82 MD |
457 | if (sony_backlight_device) |
458 | backlight_device_unregister(sony_backlight_device); | |
459 | ||
c561162f SP |
460 | status = acpi_remove_notify_handler(sony_acpi_handle, |
461 | ACPI_DEVICE_NOTIFY, | |
462 | sony_acpi_notify); | |
463 | if (ACPI_FAILURE(status)) | |
464 | printk(LOG_PFX "unable to remove notify handler\n"); | |
7f09c432 SP |
465 | outwalk: |
466 | return result; | |
467 | } | |
468 | ||
7f09c432 SP |
469 | static int sony_acpi_remove(struct acpi_device *device, int type) |
470 | { | |
471 | acpi_status status; | |
7f09c432 | 472 | |
50f62afb AG |
473 | if (sony_backlight_device) |
474 | backlight_device_unregister(sony_backlight_device); | |
475 | ||
c561162f SP |
476 | sony_acpi_acpi_device = NULL; |
477 | ||
478 | status = acpi_remove_notify_handler(sony_acpi_handle, | |
479 | ACPI_DEVICE_NOTIFY, | |
480 | sony_acpi_notify); | |
481 | if (ACPI_FAILURE(status)) | |
482 | printk(LOG_PFX "unable to remove notify handler\n"); | |
7f09c432 | 483 | |
ed3aa4b7 | 484 | sony_snc_pf_remove(); |
7f09c432 SP |
485 | |
486 | printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n"); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
3f4f461f AM |
491 | static struct acpi_driver sony_acpi_driver = { |
492 | .name = ACPI_SNC_DRIVER_NAME, | |
493 | .class = ACPI_SNC_CLASS, | |
494 | .ids = ACPI_SNC_HID, | |
495 | .ops = { | |
496 | .add = sony_acpi_add, | |
497 | .remove = sony_acpi_remove, | |
498 | .resume = sony_acpi_resume, | |
499 | }, | |
500 | }; | |
501 | ||
7f09c432 SP |
502 | static int __init sony_acpi_init(void) |
503 | { | |
ed3aa4b7 | 504 | return acpi_bus_register_driver(&sony_acpi_driver); |
7f09c432 SP |
505 | } |
506 | ||
507 | ||
508 | static void __exit sony_acpi_exit(void) | |
509 | { | |
510 | acpi_bus_unregister_driver(&sony_acpi_driver); | |
7f09c432 SP |
511 | } |
512 | ||
513 | module_init(sony_acpi_init); | |
514 | module_exit(sony_acpi_exit); |