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Stelian Pop7f09c432007-01-13 23:04:31 +01001/*
2 * ACPI Sony Notebook Control Driver (SNC)
3 *
4 * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
Mattia Dongilied3aa4b2007-02-07 20:01:54 +01005 * Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
Stelian Pop7f09c432007-01-13 23:04:31 +01006 *
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>
Alessandro Guido50f62af2007-01-13 23:04:34 +010031#include <linux/backlight.h>
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010032#include <linux/platform_device.h>
Alessandro Guido50f62af2007-01-13 23:04:34 +010033#include <linux/err.h>
Stelian Pop7f09c432007-01-13 23:04:31 +010034#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"
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010040#define ACPI_SNC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4"
Alessandro Guido50f62af2007-01-13 23:04:34 +010041
42/* the device uses 1-based values, while the backlight subsystem uses
43 0-based values */
44#define SONY_MAX_BRIGHTNESS 8
Stelian Pop7f09c432007-01-13 23:04:31 +010045
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010046#define LOG_PFX KERN_WARNING "sony-laptop: "
Stelian Pop7f09c432007-01-13 23:04:31 +010047
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010048MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
Stelian Pop7f09c432007-01-13 23:04:31 +010049MODULE_DESCRIPTION(ACPI_SNC_DRIVER_NAME);
50MODULE_LICENSE("GPL");
51
52static int debug;
53module_param(debug, int, 0);
54MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
Len Browna02d1c12007-02-07 15:34:02 -050055 "the development of this driver");
Stelian Pop7f09c432007-01-13 23:04:31 +010056
Len Browna02d1c12007-02-07 15:34:02 -050057static ssize_t sony_acpi_show(struct device *, struct device_attribute *,
58 char *);
59static ssize_t sony_acpi_store(struct device *, struct device_attribute *,
60 const char *, size_t);
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010061
62struct sony_acpi_value {
Len Browna02d1c12007-02-07 15:34:02 -050063 char *name; /* name of the entry */
64 char **acpiget; /* names of the ACPI get function */
65 char **acpiset; /* names of the ACPI set function */
66 int min; /* minimum allowed value or -1 */
67 int max; /* maximum allowed value or -1 */
68 int value; /* current setting */
69 int valid; /* Has ever been set */
70 int debug; /* active only in debug mode ? */
71 struct device_attribute devattr; /* sysfs atribute */
Stelian Pop7f09c432007-01-13 23:04:31 +010072};
73
Mattia Dongilied3aa4b2007-02-07 20:01:54 +010074#define HANDLE_NAMES(_name, _values...) \
75 static char *snc_##_name[] = { _values, NULL }
76
77#define SONY_ACPI_VALUE(_name, _getters, _setters, _min, _max, _debug) \
78 { \
79 .name = __stringify(_name), \
80 .acpiget = _getters, \
81 .acpiset = _setters, \
82 .min = _min, \
83 .max = _max, \
84 .debug = _debug, \
85 .devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \
86 }
87
88#define SONY_ACPI_VALUE_NULL { .name = NULL }
89
90HANDLE_NAMES(fnkey_get, "GHKE");
91
92HANDLE_NAMES(brightness_def_get, "GPBR");
93HANDLE_NAMES(brightness_def_set, "SPBR");
94
95HANDLE_NAMES(cdpower_get, "GCDP");
96HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
97
98HANDLE_NAMES(audiopower_get, "GAZP");
99HANDLE_NAMES(audiopower_set, "AZPW");
100
101HANDLE_NAMES(lanpower_get, "GLNP");
102HANDLE_NAMES(lanpower_set, "LNPW");
103
104HANDLE_NAMES(PID_get, "GPID");
105
106HANDLE_NAMES(CTR_get, "GCTR");
107HANDLE_NAMES(CTR_set, "SCTR");
108
109HANDLE_NAMES(PCR_get, "GPCR");
110HANDLE_NAMES(PCR_set, "SPCR");
111
112HANDLE_NAMES(CMI_get, "GCMI");
113HANDLE_NAMES(CMI_set, "SCMI");
114
115static struct sony_acpi_value sony_acpi_values[] = {
Len Browna02d1c12007-02-07 15:34:02 -0500116 SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get,
117 snc_brightness_def_set, 1, SONY_MAX_BRIGHTNESS, 0),
118 SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, -1, -1, 0),
119 SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, 0, 1, 0),
120 SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set, 0,
121 1, 0),
122 SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set, 0, 1, 1),
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100123 /* unknown methods */
Len Browna02d1c12007-02-07 15:34:02 -0500124 SONY_ACPI_VALUE(PID, snc_PID_get, NULL, -1, -1, 1),
125 SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, -1, -1, 1),
126 SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, -1, -1, 1),
127 SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, -1, -1, 1),
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100128 SONY_ACPI_VALUE_NULL
129};
130
131static acpi_handle sony_acpi_handle;
132static struct acpi_device *sony_acpi_acpi_device = NULL;
133
Mattia Dongilid78865c2007-02-07 20:01:56 +0100134/*
135 * acpi_evaluate_object wrappers
136 */
Stelian Pop7f09c432007-01-13 23:04:31 +0100137static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
138{
139 struct acpi_buffer output;
140 union acpi_object out_obj;
141 acpi_status status;
142
143 output.length = sizeof(out_obj);
144 output.pointer = &out_obj;
145
146 status = acpi_evaluate_object(handle, name, NULL, &output);
147 if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
148 *result = out_obj.integer.value;
149 return 0;
150 }
151
152 printk(LOG_PFX "acpi_callreadfunc failed\n");
153
154 return -1;
155}
156
157static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
158 int *result)
159{
160 struct acpi_object_list params;
161 union acpi_object in_obj;
162 struct acpi_buffer output;
163 union acpi_object out_obj;
164 acpi_status status;
165
166 params.count = 1;
167 params.pointer = &in_obj;
168 in_obj.type = ACPI_TYPE_INTEGER;
169 in_obj.integer.value = value;
170
171 output.length = sizeof(out_obj);
172 output.pointer = &out_obj;
173
174 status = acpi_evaluate_object(handle, name, &params, &output);
175 if (status == AE_OK) {
176 if (result != NULL) {
177 if (out_obj.type != ACPI_TYPE_INTEGER) {
178 printk(LOG_PFX "acpi_evaluate_object bad "
179 "return type\n");
180 return -1;
181 }
182 *result = out_obj.integer.value;
183 }
184 return 0;
185 }
186
187 printk(LOG_PFX "acpi_evaluate_object failed\n");
188
189 return -1;
190}
191
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100192/*
193 * Sysfs show/store common to all sony_acpi_values
194 */
195static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr,
Len Browna02d1c12007-02-07 15:34:02 -0500196 char *buffer)
Stelian Pop7f09c432007-01-13 23:04:31 +0100197{
Stelian Pop7f09c432007-01-13 23:04:31 +0100198 int value;
Len Browna02d1c12007-02-07 15:34:02 -0500199 struct sony_acpi_value *item =
200 container_of(attr, struct sony_acpi_value, devattr);
Stelian Pop7f09c432007-01-13 23:04:31 +0100201
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100202 if (!*item->acpiget)
Stelian Pop7f09c432007-01-13 23:04:31 +0100203 return -EIO;
204
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100205 if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0)
Stelian Pop7f09c432007-01-13 23:04:31 +0100206 return -EIO;
207
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100208 return snprintf(buffer, PAGE_SIZE, "%d\n", value);
Stelian Pop7f09c432007-01-13 23:04:31 +0100209}
210
Len Browna02d1c12007-02-07 15:34:02 -0500211static ssize_t sony_acpi_store(struct device *dev,
212 struct device_attribute *attr,
213 const char *buffer, size_t count)
Stelian Pop7f09c432007-01-13 23:04:31 +0100214{
Stelian Pop7f09c432007-01-13 23:04:31 +0100215 int value;
Len Browna02d1c12007-02-07 15:34:02 -0500216 struct sony_acpi_value *item =
217 container_of(attr, struct sony_acpi_value, devattr);
Stelian Pop7f09c432007-01-13 23:04:31 +0100218
219 if (!item->acpiset)
220 return -EIO;
221
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100222 if (count > 31)
223 return -EINVAL;
224
225 value = simple_strtoul(buffer, NULL, 10);
Stelian Pop7f09c432007-01-13 23:04:31 +0100226
227 if (item->min != -1 && value < item->min)
228 return -EINVAL;
229 if (item->max != -1 && value > item->max)
230 return -EINVAL;
231
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100232 if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0)
Stelian Pop7f09c432007-01-13 23:04:31 +0100233 return -EIO;
Andrew Morton3f4f4612007-01-13 23:04:32 +0100234 item->value = value;
235 item->valid = 1;
Stelian Pop7f09c432007-01-13 23:04:31 +0100236 return count;
237}
238
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100239/*
240 * Platform device
241 */
242static struct platform_driver sncpf_driver = {
243 .driver = {
Len Browna02d1c12007-02-07 15:34:02 -0500244 .name = "sony-laptop",
245 .owner = THIS_MODULE,
246 }
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100247};
248static struct platform_device *sncpf_device;
249
250static int sony_snc_pf_add(void)
251{
252 acpi_handle handle;
253 struct sony_acpi_value *item;
254 int ret = 0;
255
256 ret = platform_driver_register(&sncpf_driver);
257 if (ret)
258 goto out;
259
260 sncpf_device = platform_device_alloc("sony-laptop", -1);
261 if (!sncpf_device) {
262 ret = -ENOMEM;
263 goto out_platform_registered;
264 }
265
266 ret = platform_device_add(sncpf_device);
267 if (ret)
268 goto out_platform_alloced;
269
270 for (item = sony_acpi_values; item->name; ++item) {
271
272 if (!debug && item->debug)
273 continue;
274
275 /* find the available acpiget as described in the DSDT */
276 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
277 if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
Len Browna02d1c12007-02-07 15:34:02 -0500278 *item->acpiget,
279 &handle))) {
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100280 if (debug)
281 printk(LOG_PFX "Found %s getter: %s\n",
Len Browna02d1c12007-02-07 15:34:02 -0500282 item->name, *item->acpiget);
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100283 item->devattr.attr.mode |= S_IRUGO;
284 break;
285 }
286 }
287
288 /* find the available acpiset as described in the DSDT */
289 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
290 if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
Len Browna02d1c12007-02-07 15:34:02 -0500291 *item->acpiset,
292 &handle))) {
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100293 if (debug)
294 printk(LOG_PFX "Found %s setter: %s\n",
Len Browna02d1c12007-02-07 15:34:02 -0500295 item->name, *item->acpiset);
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100296 item->devattr.attr.mode |= S_IWUSR;
297 break;
298 }
299 }
300
Len Browna02d1c12007-02-07 15:34:02 -0500301 if (item->devattr.attr.mode != 0) {
302 ret =
303 device_create_file(&sncpf_device->dev,
304 &item->devattr);
305 if (ret)
306 goto out_sysfs;
307 }
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100308 }
309
310 return 0;
311
Len Browna02d1c12007-02-07 15:34:02 -0500312 out_sysfs:
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100313 for (item = sony_acpi_values; item->name; ++item) {
314 device_remove_file(&sncpf_device->dev, &item->devattr);
315 }
316 platform_device_del(sncpf_device);
Len Browna02d1c12007-02-07 15:34:02 -0500317 out_platform_alloced:
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100318 platform_device_put(sncpf_device);
Len Browna02d1c12007-02-07 15:34:02 -0500319 out_platform_registered:
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100320 platform_driver_unregister(&sncpf_driver);
Len Browna02d1c12007-02-07 15:34:02 -0500321 out:
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100322 return ret;
323}
324
325static void sony_snc_pf_remove(void)
326{
327 struct sony_acpi_value *item;
328
329 for (item = sony_acpi_values; item->name; ++item) {
330 device_remove_file(&sncpf_device->dev, &item->devattr);
331 }
332
333 platform_device_del(sncpf_device);
334 platform_device_put(sncpf_device);
335 platform_driver_unregister(&sncpf_driver);
336}
337
Mattia Dongilid78865c2007-02-07 20:01:56 +0100338/*
339 * Backlight device
340 */
341static int sony_backlight_update_status(struct backlight_device *bd)
Andrew Morton3f4f4612007-01-13 23:04:32 +0100342{
Mattia Dongilid78865c2007-02-07 20:01:56 +0100343 return acpi_callsetfunc(sony_acpi_handle, "SBRT",
Len Browna02d1c12007-02-07 15:34:02 -0500344 bd->props->brightness + 1, NULL);
Andrew Morton3f4f4612007-01-13 23:04:32 +0100345}
346
Mattia Dongilid78865c2007-02-07 20:01:56 +0100347static int sony_backlight_get_brightness(struct backlight_device *bd)
348{
349 int value;
350
351 if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value))
352 return 0;
353 /* brightness levels are 1-based, while backlight ones are 0-based */
354 return value - 1;
355}
356
357static struct backlight_device *sony_backlight_device;
358static struct backlight_properties sony_backlight_properties = {
Len Browna02d1c12007-02-07 15:34:02 -0500359 .owner = THIS_MODULE,
360 .update_status = sony_backlight_update_status,
361 .get_brightness = sony_backlight_get_brightness,
362 .max_brightness = SONY_MAX_BRIGHTNESS - 1,
Mattia Dongilid78865c2007-02-07 20:01:56 +0100363};
364
365/*
366 * ACPI callbacks
367 */
Stelian Pop7f09c432007-01-13 23:04:31 +0100368static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
369{
Stelian Popc5611622007-01-13 23:04:37 +0100370 if (debug)
371 printk(LOG_PFX "sony_acpi_notify, event: %d\n", event);
372 acpi_bus_generate_event(sony_acpi_acpi_device, 1, event);
Stelian Pop7f09c432007-01-13 23:04:31 +0100373}
374
375static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
376 void *context, void **return_value)
377{
378 struct acpi_namespace_node *node;
379 union acpi_operand_object *operand;
380
Len Browna02d1c12007-02-07 15:34:02 -0500381 node = (struct acpi_namespace_node *)handle;
382 operand = (union acpi_operand_object *)node->object;
Stelian Pop7f09c432007-01-13 23:04:31 +0100383
384 printk(LOG_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
385 (u32) operand->method.param_count);
386
387 return AE_OK;
388}
389
Mattia Dongilid78865c2007-02-07 20:01:56 +0100390/*
391 * ACPI device
392 */
393static int sony_acpi_resume(struct acpi_device *device)
394{
395 struct sony_acpi_value *item;
396
397 for (item = sony_acpi_values; item->name; item++) {
398 int ret;
399
400 if (!item->valid)
401 continue;
402 ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset,
Len Browna02d1c12007-02-07 15:34:02 -0500403 item->value, NULL);
Mattia Dongilid78865c2007-02-07 20:01:56 +0100404 if (ret < 0) {
405 printk("%s: %d\n", __FUNCTION__, ret);
406 break;
407 }
408 }
409 return 0;
410}
411
Stelian Pop7f09c432007-01-13 23:04:31 +0100412static int sony_acpi_add(struct acpi_device *device)
413{
414 acpi_status status;
415 int result;
Alessandro Guido50f62af2007-01-13 23:04:34 +0100416 acpi_handle handle;
Stelian Pop7f09c432007-01-13 23:04:31 +0100417
Stelian Popc5611622007-01-13 23:04:37 +0100418 sony_acpi_acpi_device = device;
419
Stelian Pop7f09c432007-01-13 23:04:31 +0100420 sony_acpi_handle = device->handle;
421
Stelian Pop7f09c432007-01-13 23:04:31 +0100422 if (debug) {
423 status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle,
424 1, sony_walk_callback, NULL, NULL);
425 if (ACPI_FAILURE(status)) {
426 printk(LOG_PFX "unable to walk acpi resources\n");
427 result = -ENODEV;
428 goto outwalk;
429 }
Stelian Popc5611622007-01-13 23:04:37 +0100430 }
Stelian Pop7f09c432007-01-13 23:04:31 +0100431
Stelian Popc5611622007-01-13 23:04:37 +0100432 status = acpi_install_notify_handler(sony_acpi_handle,
433 ACPI_DEVICE_NOTIFY,
Len Browna02d1c12007-02-07 15:34:02 -0500434 sony_acpi_notify, NULL);
Stelian Popc5611622007-01-13 23:04:37 +0100435 if (ACPI_FAILURE(status)) {
436 printk(LOG_PFX "unable to install notify handler\n");
437 result = -ENODEV;
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100438 goto outwalk;
Stelian Pop7f09c432007-01-13 23:04:31 +0100439 }
440
Alessandro Guido50f62af2007-01-13 23:04:34 +0100441 if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) {
442 sony_backlight_device = backlight_device_register("sony", NULL,
Len Browna02d1c12007-02-07 15:34:02 -0500443 NULL,
444 &sony_backlight_properties);
Mattia Dongili7df03b822007-01-13 23:04:41 +0100445
Len Browna02d1c12007-02-07 15:34:02 -0500446 if (IS_ERR(sony_backlight_device)) {
Mattia Dongili91fbc1d2007-02-07 20:01:53 +0100447 printk(LOG_PFX "unable to register backlight device\n");
Mattia Dongili7df03b822007-01-13 23:04:41 +0100448 sony_backlight_device = NULL;
Len Browna02d1c12007-02-07 15:34:02 -0500449 } else
Mattia Dongili7df03b822007-01-13 23:04:41 +0100450 sony_backlight_properties.brightness =
Len Browna02d1c12007-02-07 15:34:02 -0500451 sony_backlight_get_brightness
452 (sony_backlight_device);
Alessandro Guido50f62af2007-01-13 23:04:34 +0100453 }
Stelian Pop7f09c432007-01-13 23:04:31 +0100454
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100455 if (sony_snc_pf_add())
456 goto outbacklight;
Stelian Pop7f09c432007-01-13 23:04:31 +0100457
458 printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n");
459
460 return 0;
461
Len Browna02d1c12007-02-07 15:34:02 -0500462 outbacklight:
Mattia Dongili7df03b822007-01-13 23:04:41 +0100463 if (sony_backlight_device)
464 backlight_device_unregister(sony_backlight_device);
465
Stelian Popc5611622007-01-13 23:04:37 +0100466 status = acpi_remove_notify_handler(sony_acpi_handle,
467 ACPI_DEVICE_NOTIFY,
468 sony_acpi_notify);
469 if (ACPI_FAILURE(status))
470 printk(LOG_PFX "unable to remove notify handler\n");
Len Browna02d1c12007-02-07 15:34:02 -0500471 outwalk:
Stelian Pop7f09c432007-01-13 23:04:31 +0100472 return result;
473}
474
Stelian Pop7f09c432007-01-13 23:04:31 +0100475static int sony_acpi_remove(struct acpi_device *device, int type)
476{
477 acpi_status status;
Stelian Pop7f09c432007-01-13 23:04:31 +0100478
Alessandro Guido50f62af2007-01-13 23:04:34 +0100479 if (sony_backlight_device)
480 backlight_device_unregister(sony_backlight_device);
481
Stelian Popc5611622007-01-13 23:04:37 +0100482 sony_acpi_acpi_device = NULL;
483
484 status = acpi_remove_notify_handler(sony_acpi_handle,
485 ACPI_DEVICE_NOTIFY,
486 sony_acpi_notify);
487 if (ACPI_FAILURE(status))
488 printk(LOG_PFX "unable to remove notify handler\n");
Stelian Pop7f09c432007-01-13 23:04:31 +0100489
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100490 sony_snc_pf_remove();
Stelian Pop7f09c432007-01-13 23:04:31 +0100491
492 printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n");
493
494 return 0;
495}
496
Andrew Morton3f4f4612007-01-13 23:04:32 +0100497static struct acpi_driver sony_acpi_driver = {
Len Browna02d1c12007-02-07 15:34:02 -0500498 .name = ACPI_SNC_DRIVER_NAME,
499 .class = ACPI_SNC_CLASS,
500 .ids = ACPI_SNC_HID,
501 .ops = {
502 .add = sony_acpi_add,
503 .remove = sony_acpi_remove,
504 .resume = sony_acpi_resume,
505 },
Andrew Morton3f4f4612007-01-13 23:04:32 +0100506};
507
Stelian Pop7f09c432007-01-13 23:04:31 +0100508static int __init sony_acpi_init(void)
509{
Mattia Dongilied3aa4b2007-02-07 20:01:54 +0100510 return acpi_bus_register_driver(&sony_acpi_driver);
Stelian Pop7f09c432007-01-13 23:04:31 +0100511}
512
Stelian Pop7f09c432007-01-13 23:04:31 +0100513static void __exit sony_acpi_exit(void)
514{
515 acpi_bus_unregister_driver(&sony_acpi_driver);
Stelian Pop7f09c432007-01-13 23:04:31 +0100516}
517
518module_init(sony_acpi_init);
519module_exit(sony_acpi_exit);