Commit | Line | Data |
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709ee531 HW |
1 | /* |
2 | * Panasonic HotKey and LCD brightness control driver | |
3 | * (C) 2004 Hiroshi Miura <miura@da-cha.org> | |
4 | * (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/ | |
5 | * (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp> | |
6 | * (C) 2004 David Bronaugh <dbronaugh> | |
7 | * (C) 2006-2008 Harald Welte <laforge@gnumonks.org> | |
8 | * | |
9 | * derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * publicshed by the Free Software Foundation. | |
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | *--------------------------------------------------------------------------- | |
25 | * | |
26 | * ChangeLog: | |
27 | * Sep.23, 2008 Harald Welte <laforge@gnumonks.org> | |
28 | * -v0.95 rename driver from drivers/acpi/pcc_acpi.c to | |
29 | * drivers/misc/panasonic-laptop.c | |
30 | * | |
31 | * Jul.04, 2008 Harald Welte <laforge@gnumonks.org> | |
32 | * -v0.94 replace /proc interface with device attributes | |
33 | * support {set,get}keycode on th input device | |
34 | * | |
35 | * Jun.27, 2008 Harald Welte <laforge@gnumonks.org> | |
36 | * -v0.92 merge with 2.6.26-rc6 input API changes | |
37 | * remove broken <= 2.6.15 kernel support | |
38 | * resolve all compiler warnings | |
39 | * various coding style fixes (checkpatch.pl) | |
40 | * add support for backlight api | |
41 | * major code restructuring | |
42 | * | |
43 | * Dac.28, 2007 Harald Welte <laforge@gnumonks.org> | |
44 | * -v0.91 merge with 2.6.24-rc6 ACPI changes | |
45 | * | |
46 | * Nov.04, 2006 Hiroshi Miura <miura@da-cha.org> | |
47 | * -v0.9 remove warning about section reference. | |
48 | * remove acpi_os_free | |
49 | * add /proc/acpi/pcc/brightness interface for HAL access | |
50 | * merge dbronaugh's enhancement | |
51 | * Aug.17, 2004 David Bronaugh (dbronaugh) | |
52 | * - Added screen brightness setting interface | |
53 | * Thanks to FreeBSD crew (acpi_panasonic.c) | |
54 | * for the ideas I needed to accomplish it | |
55 | * | |
56 | * May.29, 2006 Hiroshi Miura <miura@da-cha.org> | |
57 | * -v0.8.4 follow to change keyinput structure | |
58 | * thanks Fabian Yamaguchi <fabs@cs.tu-berlin.de>, | |
59 | * Jacob Bower <jacob.bower@ic.ac.uk> and | |
60 | * Hiroshi Yokota for providing solutions. | |
61 | * | |
62 | * Oct.02, 2004 Hiroshi Miura <miura@da-cha.org> | |
63 | * -v0.8.2 merge code of YOKOTA Hiroshi | |
64 | * <yokota@netlab.is.tsukuba.ac.jp>. | |
65 | * Add sticky key mode interface. | |
66 | * Refactoring acpi_pcc_generate_keyinput(). | |
67 | * | |
68 | * Sep.15, 2004 Hiroshi Miura <miura@da-cha.org> | |
69 | * -v0.8 Generate key input event on input subsystem. | |
70 | * This is based on yet another driver written by | |
71 | * Ryuta Nakanishi. | |
72 | * | |
73 | * Sep.10, 2004 Hiroshi Miura <miura@da-cha.org> | |
74 | * -v0.7 Change proc interface functions using seq_file | |
75 | * facility as same as other ACPI drivers. | |
76 | * | |
77 | * Aug.28, 2004 Hiroshi Miura <miura@da-cha.org> | |
78 | * -v0.6.4 Fix a silly error with status checking | |
79 | * | |
80 | * Aug.25, 2004 Hiroshi Miura <miura@da-cha.org> | |
81 | * -v0.6.3 replace read_acpi_int by standard function | |
82 | * acpi_evaluate_integer | |
83 | * some clean up and make smart copyright notice. | |
84 | * fix return value of pcc_acpi_get_key() | |
85 | * fix checking return value of acpi_bus_register_driver() | |
86 | * | |
87 | * Aug.22, 2004 David Bronaugh <dbronaugh@linuxboxen.org> | |
88 | * -v0.6.2 Add check on ACPI data (num_sifr) | |
89 | * Coding style cleanups, better error messages/handling | |
90 | * Fixed an off-by-one error in memory allocation | |
91 | * | |
92 | * Aug.21, 2004 David Bronaugh <dbronaugh@linuxboxen.org> | |
93 | * -v0.6.1 Fix a silly error with status checking | |
94 | * | |
95 | * Aug.20, 2004 David Bronaugh <dbronaugh@linuxboxen.org> | |
96 | * - v0.6 Correct brightness controls to reflect reality | |
97 | * based on information gleaned by Hiroshi Miura | |
98 | * and discussions with Hiroshi Miura | |
99 | * | |
100 | * Aug.10, 2004 Hiroshi Miura <miura@da-cha.org> | |
101 | * - v0.5 support LCD brightness control | |
102 | * based on the disclosed information by MEI. | |
103 | * | |
104 | * Jul.25, 2004 Hiroshi Miura <miura@da-cha.org> | |
105 | * - v0.4 first post version | |
106 | * add function to retrive SIFR | |
107 | * | |
108 | * Jul.24, 2004 Hiroshi Miura <miura@da-cha.org> | |
109 | * - v0.3 get proper status of hotkey | |
110 | * | |
111 | * Jul.22, 2004 Hiroshi Miura <miura@da-cha.org> | |
112 | * - v0.2 add HotKey handler | |
113 | * | |
114 | * Jul.17, 2004 Hiroshi Miura <miura@da-cha.org> | |
115 | * - v0.1 start from toshiba_acpi driver written by John Belmonte | |
116 | * | |
117 | */ | |
118 | ||
709ee531 HW |
119 | #include <linux/kernel.h> |
120 | #include <linux/module.h> | |
121 | #include <linux/init.h> | |
122 | #include <linux/types.h> | |
123 | #include <linux/backlight.h> | |
124 | #include <linux/ctype.h> | |
125 | #include <linux/seq_file.h> | |
126 | #include <linux/uaccess.h> | |
127 | #include <acpi/acpi_bus.h> | |
128 | #include <acpi/acpi_drivers.h> | |
129 | #include <linux/input.h> | |
130 | ||
131 | ||
132 | #ifndef ACPI_HOTKEY_COMPONENT | |
133 | #define ACPI_HOTKEY_COMPONENT 0x10000000 | |
134 | #endif | |
135 | ||
136 | #define _COMPONENT ACPI_HOTKEY_COMPONENT | |
137 | ||
138 | MODULE_AUTHOR("Hiroshi Miura, David Bronaugh and Harald Welte"); | |
139 | MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops"); | |
140 | MODULE_LICENSE("GPL"); | |
141 | ||
142 | #define LOGPREFIX "pcc_acpi: " | |
143 | ||
144 | /* Define ACPI PATHs */ | |
145 | /* Lets note hotkeys */ | |
146 | #define METHOD_HKEY_QUERY "HINF" | |
147 | #define METHOD_HKEY_SQTY "SQTY" | |
148 | #define METHOD_HKEY_SINF "SINF" | |
149 | #define METHOD_HKEY_SSET "SSET" | |
150 | #define HKEY_NOTIFY 0x80 | |
151 | ||
152 | #define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support" | |
153 | #define ACPI_PCC_DEVICE_NAME "Hotkey" | |
154 | #define ACPI_PCC_CLASS "pcc" | |
155 | ||
156 | #define ACPI_PCC_INPUT_PHYS "panasonic/hkey0" | |
157 | ||
158 | /* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent | |
159 | ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00 | |
160 | */ | |
161 | enum SINF_BITS { SINF_NUM_BATTERIES = 0, | |
162 | SINF_LCD_TYPE, | |
163 | SINF_AC_MAX_BRIGHT, | |
164 | SINF_AC_MIN_BRIGHT, | |
165 | SINF_AC_CUR_BRIGHT, | |
166 | SINF_DC_MAX_BRIGHT, | |
167 | SINF_DC_MIN_BRIGHT, | |
168 | SINF_DC_CUR_BRIGHT, | |
169 | SINF_MUTE, | |
170 | SINF_RESERVED, | |
171 | SINF_ENV_STATE, | |
172 | SINF_STICKY_KEY = 0x80, | |
173 | }; | |
174 | /* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */ | |
175 | ||
176 | static int acpi_pcc_hotkey_add(struct acpi_device *device); | |
177 | static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type); | |
178 | static int acpi_pcc_hotkey_resume(struct acpi_device *device); | |
cddd1f71 | 179 | static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event); |
709ee531 HW |
180 | |
181 | static const struct acpi_device_id pcc_device_ids[] = { | |
182 | { "MAT0012", 0}, | |
183 | { "MAT0013", 0}, | |
184 | { "MAT0018", 0}, | |
185 | { "MAT0019", 0}, | |
186 | { "", 0}, | |
187 | }; | |
c542aade | 188 | MODULE_DEVICE_TABLE(acpi, pcc_device_ids); |
709ee531 HW |
189 | |
190 | static struct acpi_driver acpi_pcc_driver = { | |
191 | .name = ACPI_PCC_DRIVER_NAME, | |
192 | .class = ACPI_PCC_CLASS, | |
193 | .ids = pcc_device_ids, | |
194 | .ops = { | |
195 | .add = acpi_pcc_hotkey_add, | |
196 | .remove = acpi_pcc_hotkey_remove, | |
197 | .resume = acpi_pcc_hotkey_resume, | |
cddd1f71 | 198 | .notify = acpi_pcc_hotkey_notify, |
709ee531 HW |
199 | }, |
200 | }; | |
201 | ||
202 | #define KEYMAP_SIZE 11 | |
203 | static const int initial_keymap[KEYMAP_SIZE] = { | |
204 | /* 0 */ KEY_RESERVED, | |
205 | /* 1 */ KEY_BRIGHTNESSDOWN, | |
206 | /* 2 */ KEY_BRIGHTNESSUP, | |
207 | /* 3 */ KEY_DISPLAYTOGGLE, | |
208 | /* 4 */ KEY_MUTE, | |
209 | /* 5 */ KEY_VOLUMEDOWN, | |
210 | /* 6 */ KEY_VOLUMEUP, | |
211 | /* 7 */ KEY_SLEEP, | |
212 | /* 8 */ KEY_PROG1, /* Change CPU boost */ | |
213 | /* 9 */ KEY_BATTERY, | |
214 | /* 10 */ KEY_SUSPEND, | |
215 | }; | |
216 | ||
217 | struct pcc_acpi { | |
218 | acpi_handle handle; | |
219 | unsigned long num_sifr; | |
220 | int sticky_mode; | |
221 | u32 *sinf; | |
222 | struct acpi_device *device; | |
223 | struct input_dev *input_dev; | |
224 | struct backlight_device *backlight; | |
225 | int keymap[KEYMAP_SIZE]; | |
226 | }; | |
227 | ||
228 | struct pcc_keyinput { | |
229 | struct acpi_hotkey *hotkey; | |
230 | }; | |
231 | ||
232 | /* method access functions */ | |
233 | static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) | |
234 | { | |
235 | union acpi_object in_objs[] = { | |
236 | { .integer.type = ACPI_TYPE_INTEGER, | |
237 | .integer.value = func, }, | |
238 | { .integer.type = ACPI_TYPE_INTEGER, | |
239 | .integer.value = val, }, | |
240 | }; | |
241 | struct acpi_object_list params = { | |
242 | .count = ARRAY_SIZE(in_objs), | |
243 | .pointer = in_objs, | |
244 | }; | |
245 | acpi_status status = AE_OK; | |
246 | ||
709ee531 HW |
247 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, |
248 | ¶ms, NULL); | |
249 | ||
250 | return status == AE_OK; | |
251 | } | |
252 | ||
253 | static inline int acpi_pcc_get_sqty(struct acpi_device *device) | |
254 | { | |
3e2dab9a | 255 | unsigned long long s; |
709ee531 HW |
256 | acpi_status status; |
257 | ||
709ee531 HW |
258 | status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, |
259 | NULL, &s); | |
260 | if (ACPI_SUCCESS(status)) | |
261 | return s; | |
262 | else { | |
263 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
264 | "evaluation error HKEY.SQTY\n")); | |
265 | return -EINVAL; | |
266 | } | |
267 | } | |
268 | ||
269 | static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc, u32 *sinf) | |
270 | { | |
271 | acpi_status status; | |
272 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
273 | union acpi_object *hkey = NULL; | |
274 | int i; | |
275 | ||
a3c27056 | 276 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL, |
709ee531 HW |
277 | &buffer); |
278 | if (ACPI_FAILURE(status)) { | |
279 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
280 | "evaluation error HKEY.SINF\n")); | |
281 | return 0; | |
282 | } | |
283 | ||
284 | hkey = buffer.pointer; | |
285 | if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { | |
286 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n")); | |
287 | goto end; | |
288 | } | |
289 | ||
290 | if (pcc->num_sifr < hkey->package.count) { | |
291 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
292 | "SQTY reports bad SINF length\n")); | |
293 | status = AE_ERROR; | |
294 | goto end; | |
295 | } | |
296 | ||
297 | for (i = 0; i < hkey->package.count; i++) { | |
298 | union acpi_object *element = &(hkey->package.elements[i]); | |
299 | if (likely(element->type == ACPI_TYPE_INTEGER)) { | |
300 | sinf[i] = element->integer.value; | |
301 | } else | |
302 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
303 | "Invalid HKEY.SINF data\n")); | |
304 | } | |
305 | sinf[hkey->package.count] = -1; | |
306 | ||
307 | end: | |
308 | kfree(buffer.pointer); | |
309 | return status == AE_OK; | |
310 | } | |
311 | ||
312 | /* backlight API interface functions */ | |
313 | ||
314 | /* This driver currently treats AC and DC brightness identical, | |
315 | * since we don't need to invent an interface to the core ACPI | |
316 | * logic to receive events in case a power supply is plugged in | |
317 | * or removed */ | |
318 | ||
319 | static int bl_get(struct backlight_device *bd) | |
320 | { | |
321 | struct pcc_acpi *pcc = bl_get_data(bd); | |
322 | ||
323 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
324 | return -EIO; | |
325 | ||
326 | return pcc->sinf[SINF_AC_CUR_BRIGHT]; | |
327 | } | |
328 | ||
329 | static int bl_set_status(struct backlight_device *bd) | |
330 | { | |
331 | struct pcc_acpi *pcc = bl_get_data(bd); | |
332 | int bright = bd->props.brightness; | |
333 | int rc; | |
334 | ||
335 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
336 | return -EIO; | |
337 | ||
338 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) | |
339 | bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; | |
340 | ||
341 | if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) | |
342 | bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; | |
343 | ||
344 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || | |
345 | bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) | |
346 | return -EINVAL; | |
347 | ||
348 | rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); | |
349 | if (rc < 0) | |
350 | return rc; | |
351 | ||
352 | return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); | |
353 | } | |
354 | ||
355 | static struct backlight_ops pcc_backlight_ops = { | |
356 | .get_brightness = bl_get, | |
357 | .update_status = bl_set_status, | |
358 | }; | |
359 | ||
360 | ||
361 | /* sysfs user interface functions */ | |
362 | ||
363 | static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr, | |
364 | char *buf) | |
365 | { | |
366 | struct acpi_device *acpi = to_acpi_device(dev); | |
367 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
368 | ||
369 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
370 | return -EIO; | |
371 | ||
ba256b41 | 372 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); |
709ee531 HW |
373 | } |
374 | ||
375 | static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, | |
376 | char *buf) | |
377 | { | |
378 | struct acpi_device *acpi = to_acpi_device(dev); | |
379 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
380 | ||
381 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
382 | return -EIO; | |
383 | ||
ba256b41 | 384 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); |
709ee531 HW |
385 | } |
386 | ||
387 | static ssize_t show_mute(struct device *dev, struct device_attribute *attr, | |
388 | char *buf) | |
389 | { | |
390 | struct acpi_device *acpi = to_acpi_device(dev); | |
391 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
392 | ||
393 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
394 | return -EIO; | |
395 | ||
ba256b41 | 396 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); |
709ee531 HW |
397 | } |
398 | ||
399 | static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, | |
400 | char *buf) | |
401 | { | |
402 | struct acpi_device *acpi = to_acpi_device(dev); | |
403 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
404 | ||
405 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
406 | return -EIO; | |
407 | ||
ba256b41 | 408 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]); |
709ee531 HW |
409 | } |
410 | ||
411 | static ssize_t set_sticky(struct device *dev, struct device_attribute *attr, | |
412 | const char *buf, size_t count) | |
413 | { | |
414 | struct acpi_device *acpi = to_acpi_device(dev); | |
415 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
416 | int val; | |
417 | ||
418 | if (count && sscanf(buf, "%i", &val) == 1 && | |
419 | (val == 0 || val == 1)) { | |
420 | acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); | |
421 | pcc->sticky_mode = val; | |
422 | } | |
423 | ||
424 | return count; | |
425 | } | |
426 | ||
427 | static DEVICE_ATTR(numbatt, S_IRUGO, show_numbatt, NULL); | |
428 | static DEVICE_ATTR(lcdtype, S_IRUGO, show_lcdtype, NULL); | |
429 | static DEVICE_ATTR(mute, S_IRUGO, show_mute, NULL); | |
430 | static DEVICE_ATTR(sticky_key, S_IRUGO | S_IWUSR, show_sticky, set_sticky); | |
431 | ||
432 | static struct attribute *pcc_sysfs_entries[] = { | |
433 | &dev_attr_numbatt.attr, | |
434 | &dev_attr_lcdtype.attr, | |
435 | &dev_attr_mute.attr, | |
436 | &dev_attr_sticky_key.attr, | |
437 | NULL, | |
438 | }; | |
439 | ||
440 | static struct attribute_group pcc_attr_group = { | |
441 | .name = NULL, /* put in device directory */ | |
442 | .attrs = pcc_sysfs_entries, | |
443 | }; | |
444 | ||
445 | ||
446 | /* hotkey input device driver */ | |
447 | ||
448 | static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode) | |
449 | { | |
450 | struct pcc_acpi *pcc = input_get_drvdata(dev); | |
451 | ||
452 | if (scancode >= ARRAY_SIZE(pcc->keymap)) | |
453 | return -EINVAL; | |
454 | ||
455 | *keycode = pcc->keymap[scancode]; | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode) | |
461 | { | |
462 | int i; | |
463 | ||
464 | for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) { | |
465 | if (pcc->keymap[i] == keycode) | |
466 | return i+1; | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode) | |
473 | { | |
474 | struct pcc_acpi *pcc = input_get_drvdata(dev); | |
475 | int oldkeycode; | |
476 | ||
477 | if (scancode >= ARRAY_SIZE(pcc->keymap)) | |
478 | return -EINVAL; | |
479 | ||
480 | if (keycode < 0 || keycode > KEY_MAX) | |
481 | return -EINVAL; | |
482 | ||
483 | oldkeycode = pcc->keymap[scancode]; | |
484 | pcc->keymap[scancode] = keycode; | |
485 | ||
486 | set_bit(keycode, dev->keybit); | |
487 | ||
488 | if (!keymap_get_by_keycode(pcc, oldkeycode)) | |
489 | clear_bit(oldkeycode, dev->keybit); | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
494 | static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) | |
495 | { | |
496 | struct input_dev *hotk_input_dev = pcc->input_dev; | |
497 | int rc; | |
498 | int key_code, hkey_num; | |
3e2dab9a | 499 | unsigned long long result; |
709ee531 | 500 | |
709ee531 HW |
501 | rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, |
502 | NULL, &result); | |
503 | if (!ACPI_SUCCESS(rc)) { | |
504 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
505 | "error getting hotkey status\n")); | |
506 | return; | |
507 | } | |
508 | ||
509 | acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result); | |
510 | ||
511 | hkey_num = result & 0xf; | |
512 | ||
2b190e76 | 513 | if (hkey_num < 0 || hkey_num >= ARRAY_SIZE(pcc->keymap)) { |
709ee531 HW |
514 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
515 | "hotkey number out of range: %d\n", | |
516 | hkey_num)); | |
517 | return; | |
518 | } | |
519 | ||
520 | key_code = pcc->keymap[hkey_num]; | |
521 | ||
522 | if (key_code != KEY_RESERVED) { | |
523 | int pushed = (result & 0x80) ? TRUE : FALSE; | |
524 | ||
525 | input_report_key(hotk_input_dev, key_code, pushed); | |
526 | input_sync(hotk_input_dev); | |
527 | } | |
528 | ||
529 | return; | |
530 | } | |
531 | ||
cddd1f71 | 532 | static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event) |
709ee531 | 533 | { |
cddd1f71 | 534 | struct pcc_acpi *pcc = acpi_driver_data(device); |
709ee531 | 535 | |
709ee531 HW |
536 | switch (event) { |
537 | case HKEY_NOTIFY: | |
538 | acpi_pcc_generate_keyinput(pcc); | |
539 | break; | |
540 | default: | |
541 | /* nothing to do */ | |
542 | break; | |
543 | } | |
544 | } | |
545 | ||
546 | static int acpi_pcc_init_input(struct pcc_acpi *pcc) | |
547 | { | |
548 | int i, rc; | |
549 | ||
709ee531 HW |
550 | pcc->input_dev = input_allocate_device(); |
551 | if (!pcc->input_dev) { | |
552 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
553 | "Couldn't allocate input device for hotkey")); | |
554 | return -ENOMEM; | |
555 | } | |
556 | ||
557 | pcc->input_dev->evbit[0] = BIT(EV_KEY); | |
558 | ||
559 | pcc->input_dev->name = ACPI_PCC_DRIVER_NAME; | |
560 | pcc->input_dev->phys = ACPI_PCC_INPUT_PHYS; | |
561 | pcc->input_dev->id.bustype = BUS_HOST; | |
562 | pcc->input_dev->id.vendor = 0x0001; | |
563 | pcc->input_dev->id.product = 0x0001; | |
564 | pcc->input_dev->id.version = 0x0100; | |
565 | pcc->input_dev->getkeycode = pcc_getkeycode; | |
566 | pcc->input_dev->setkeycode = pcc_setkeycode; | |
567 | ||
568 | /* load initial keymap */ | |
569 | memcpy(pcc->keymap, initial_keymap, sizeof(pcc->keymap)); | |
570 | ||
571 | for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) | |
572 | __set_bit(pcc->keymap[i], pcc->input_dev->keybit); | |
573 | __clear_bit(KEY_RESERVED, pcc->input_dev->keybit); | |
574 | ||
575 | input_set_drvdata(pcc->input_dev, pcc); | |
576 | ||
577 | rc = input_register_device(pcc->input_dev); | |
578 | if (rc < 0) | |
579 | input_free_device(pcc->input_dev); | |
580 | ||
581 | return rc; | |
582 | } | |
583 | ||
584 | /* kernel module interface */ | |
585 | ||
586 | static int acpi_pcc_hotkey_resume(struct acpi_device *device) | |
587 | { | |
588 | struct pcc_acpi *pcc = acpi_driver_data(device); | |
589 | acpi_status status = AE_OK; | |
590 | ||
709ee531 HW |
591 | if (device == NULL || pcc == NULL) |
592 | return -EINVAL; | |
593 | ||
594 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n", | |
595 | pcc->sticky_mode)); | |
596 | ||
597 | status = acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode); | |
598 | ||
599 | return status == AE_OK ? 0 : -EINVAL; | |
600 | } | |
601 | ||
602 | static int acpi_pcc_hotkey_add(struct acpi_device *device) | |
603 | { | |
709ee531 HW |
604 | struct pcc_acpi *pcc; |
605 | int num_sifr, result; | |
606 | ||
709ee531 HW |
607 | if (!device) |
608 | return -EINVAL; | |
609 | ||
610 | num_sifr = acpi_pcc_get_sqty(device); | |
611 | ||
612 | if (num_sifr > 255) { | |
613 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr too large")); | |
614 | return -ENODEV; | |
615 | } | |
616 | ||
617 | pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); | |
618 | if (!pcc) { | |
619 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
620 | "Couldn't allocate mem for pcc")); | |
621 | return -ENOMEM; | |
622 | } | |
623 | ||
624 | pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL); | |
625 | if (!pcc->sinf) { | |
626 | result = -ENOMEM; | |
627 | goto out_hotkey; | |
628 | } | |
629 | ||
630 | pcc->device = device; | |
631 | pcc->handle = device->handle; | |
632 | pcc->num_sifr = num_sifr; | |
3e2dab9a | 633 | device->driver_data = pcc; |
709ee531 HW |
634 | strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); |
635 | strcpy(acpi_device_class(device), ACPI_PCC_CLASS); | |
636 | ||
637 | result = acpi_pcc_init_input(pcc); | |
638 | if (result) { | |
639 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
640 | "Error installing keyinput handler\n")); | |
641 | goto out_sinf; | |
642 | } | |
643 | ||
709ee531 HW |
644 | /* initialize backlight */ |
645 | pcc->backlight = backlight_device_register("panasonic", NULL, pcc, | |
646 | &pcc_backlight_ops); | |
647 | if (IS_ERR(pcc->backlight)) | |
cddd1f71 | 648 | goto out_input; |
709ee531 HW |
649 | |
650 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) { | |
651 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
652 | "Couldn't retrieve BIOS data\n")); | |
653 | goto out_backlight; | |
654 | } | |
655 | ||
656 | /* read the initial brightness setting from the hardware */ | |
657 | pcc->backlight->props.max_brightness = | |
658 | pcc->sinf[SINF_AC_MAX_BRIGHT]; | |
659 | pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; | |
660 | ||
661 | /* read the initial sticky key mode from the hardware */ | |
662 | pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY]; | |
663 | ||
664 | /* add sysfs attributes */ | |
665 | result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); | |
666 | if (result) | |
667 | goto out_backlight; | |
668 | ||
669 | return 0; | |
670 | ||
671 | out_backlight: | |
672 | backlight_device_unregister(pcc->backlight); | |
709ee531 HW |
673 | out_input: |
674 | input_unregister_device(pcc->input_dev); | |
675 | /* no need to input_free_device() since core input API refcount and | |
676 | * free()s the device */ | |
677 | out_sinf: | |
678 | kfree(pcc->sinf); | |
679 | out_hotkey: | |
680 | kfree(pcc); | |
681 | ||
682 | return result; | |
683 | } | |
684 | ||
685 | static int __init acpi_pcc_init(void) | |
686 | { | |
687 | int result = 0; | |
688 | ||
709ee531 HW |
689 | if (acpi_disabled) |
690 | return -ENODEV; | |
691 | ||
692 | result = acpi_bus_register_driver(&acpi_pcc_driver); | |
693 | if (result < 0) { | |
694 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
695 | "Error registering hotkey driver\n")); | |
696 | return -ENODEV; | |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type) | |
703 | { | |
704 | struct pcc_acpi *pcc = acpi_driver_data(device); | |
705 | ||
709ee531 HW |
706 | if (!device || !pcc) |
707 | return -EINVAL; | |
708 | ||
709 | sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); | |
710 | ||
711 | backlight_device_unregister(pcc->backlight); | |
712 | ||
709ee531 HW |
713 | input_unregister_device(pcc->input_dev); |
714 | /* no need to input_free_device() since core input API refcount and | |
715 | * free()s the device */ | |
716 | ||
717 | kfree(pcc->sinf); | |
718 | kfree(pcc); | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
723 | static void __exit acpi_pcc_exit(void) | |
724 | { | |
709ee531 HW |
725 | acpi_bus_unregister_driver(&acpi_pcc_driver); |
726 | } | |
727 | ||
728 | module_init(acpi_pcc_init); | |
729 | module_exit(acpi_pcc_exit); |