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); | |
179 | ||
180 | static const struct acpi_device_id pcc_device_ids[] = { | |
181 | { "MAT0012", 0}, | |
182 | { "MAT0013", 0}, | |
183 | { "MAT0018", 0}, | |
184 | { "MAT0019", 0}, | |
185 | { "", 0}, | |
186 | }; | |
c542aade | 187 | MODULE_DEVICE_TABLE(acpi, pcc_device_ids); |
709ee531 HW |
188 | |
189 | static struct acpi_driver acpi_pcc_driver = { | |
190 | .name = ACPI_PCC_DRIVER_NAME, | |
191 | .class = ACPI_PCC_CLASS, | |
192 | .ids = pcc_device_ids, | |
193 | .ops = { | |
194 | .add = acpi_pcc_hotkey_add, | |
195 | .remove = acpi_pcc_hotkey_remove, | |
196 | .resume = acpi_pcc_hotkey_resume, | |
197 | }, | |
198 | }; | |
199 | ||
200 | #define KEYMAP_SIZE 11 | |
201 | static const int initial_keymap[KEYMAP_SIZE] = { | |
202 | /* 0 */ KEY_RESERVED, | |
203 | /* 1 */ KEY_BRIGHTNESSDOWN, | |
204 | /* 2 */ KEY_BRIGHTNESSUP, | |
205 | /* 3 */ KEY_DISPLAYTOGGLE, | |
206 | /* 4 */ KEY_MUTE, | |
207 | /* 5 */ KEY_VOLUMEDOWN, | |
208 | /* 6 */ KEY_VOLUMEUP, | |
209 | /* 7 */ KEY_SLEEP, | |
210 | /* 8 */ KEY_PROG1, /* Change CPU boost */ | |
211 | /* 9 */ KEY_BATTERY, | |
212 | /* 10 */ KEY_SUSPEND, | |
213 | }; | |
214 | ||
215 | struct pcc_acpi { | |
216 | acpi_handle handle; | |
217 | unsigned long num_sifr; | |
218 | int sticky_mode; | |
219 | u32 *sinf; | |
220 | struct acpi_device *device; | |
221 | struct input_dev *input_dev; | |
222 | struct backlight_device *backlight; | |
223 | int keymap[KEYMAP_SIZE]; | |
224 | }; | |
225 | ||
226 | struct pcc_keyinput { | |
227 | struct acpi_hotkey *hotkey; | |
228 | }; | |
229 | ||
230 | /* method access functions */ | |
231 | static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) | |
232 | { | |
233 | union acpi_object in_objs[] = { | |
234 | { .integer.type = ACPI_TYPE_INTEGER, | |
235 | .integer.value = func, }, | |
236 | { .integer.type = ACPI_TYPE_INTEGER, | |
237 | .integer.value = val, }, | |
238 | }; | |
239 | struct acpi_object_list params = { | |
240 | .count = ARRAY_SIZE(in_objs), | |
241 | .pointer = in_objs, | |
242 | }; | |
243 | acpi_status status = AE_OK; | |
244 | ||
709ee531 HW |
245 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, |
246 | ¶ms, NULL); | |
247 | ||
248 | return status == AE_OK; | |
249 | } | |
250 | ||
251 | static inline int acpi_pcc_get_sqty(struct acpi_device *device) | |
252 | { | |
3e2dab9a | 253 | unsigned long long s; |
709ee531 HW |
254 | acpi_status status; |
255 | ||
709ee531 HW |
256 | status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, |
257 | NULL, &s); | |
258 | if (ACPI_SUCCESS(status)) | |
259 | return s; | |
260 | else { | |
261 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
262 | "evaluation error HKEY.SQTY\n")); | |
263 | return -EINVAL; | |
264 | } | |
265 | } | |
266 | ||
267 | static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc, u32 *sinf) | |
268 | { | |
269 | acpi_status status; | |
270 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
271 | union acpi_object *hkey = NULL; | |
272 | int i; | |
273 | ||
709ee531 HW |
274 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, 0, |
275 | &buffer); | |
276 | if (ACPI_FAILURE(status)) { | |
277 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
278 | "evaluation error HKEY.SINF\n")); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | hkey = buffer.pointer; | |
283 | if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { | |
284 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n")); | |
285 | goto end; | |
286 | } | |
287 | ||
288 | if (pcc->num_sifr < hkey->package.count) { | |
289 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
290 | "SQTY reports bad SINF length\n")); | |
291 | status = AE_ERROR; | |
292 | goto end; | |
293 | } | |
294 | ||
295 | for (i = 0; i < hkey->package.count; i++) { | |
296 | union acpi_object *element = &(hkey->package.elements[i]); | |
297 | if (likely(element->type == ACPI_TYPE_INTEGER)) { | |
298 | sinf[i] = element->integer.value; | |
299 | } else | |
300 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
301 | "Invalid HKEY.SINF data\n")); | |
302 | } | |
303 | sinf[hkey->package.count] = -1; | |
304 | ||
305 | end: | |
306 | kfree(buffer.pointer); | |
307 | return status == AE_OK; | |
308 | } | |
309 | ||
310 | /* backlight API interface functions */ | |
311 | ||
312 | /* This driver currently treats AC and DC brightness identical, | |
313 | * since we don't need to invent an interface to the core ACPI | |
314 | * logic to receive events in case a power supply is plugged in | |
315 | * or removed */ | |
316 | ||
317 | static int bl_get(struct backlight_device *bd) | |
318 | { | |
319 | struct pcc_acpi *pcc = bl_get_data(bd); | |
320 | ||
321 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
322 | return -EIO; | |
323 | ||
324 | return pcc->sinf[SINF_AC_CUR_BRIGHT]; | |
325 | } | |
326 | ||
327 | static int bl_set_status(struct backlight_device *bd) | |
328 | { | |
329 | struct pcc_acpi *pcc = bl_get_data(bd); | |
330 | int bright = bd->props.brightness; | |
331 | int rc; | |
332 | ||
333 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
334 | return -EIO; | |
335 | ||
336 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) | |
337 | bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; | |
338 | ||
339 | if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) | |
340 | bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; | |
341 | ||
342 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || | |
343 | bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) | |
344 | return -EINVAL; | |
345 | ||
346 | rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); | |
347 | if (rc < 0) | |
348 | return rc; | |
349 | ||
350 | return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); | |
351 | } | |
352 | ||
353 | static struct backlight_ops pcc_backlight_ops = { | |
354 | .get_brightness = bl_get, | |
355 | .update_status = bl_set_status, | |
356 | }; | |
357 | ||
358 | ||
359 | /* sysfs user interface functions */ | |
360 | ||
361 | static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr, | |
362 | char *buf) | |
363 | { | |
364 | struct acpi_device *acpi = to_acpi_device(dev); | |
365 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
366 | ||
367 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
368 | return -EIO; | |
369 | ||
ba256b41 | 370 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); |
709ee531 HW |
371 | } |
372 | ||
373 | static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, | |
374 | char *buf) | |
375 | { | |
376 | struct acpi_device *acpi = to_acpi_device(dev); | |
377 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
378 | ||
379 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
380 | return -EIO; | |
381 | ||
ba256b41 | 382 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); |
709ee531 HW |
383 | } |
384 | ||
385 | static ssize_t show_mute(struct device *dev, struct device_attribute *attr, | |
386 | char *buf) | |
387 | { | |
388 | struct acpi_device *acpi = to_acpi_device(dev); | |
389 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
390 | ||
391 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
392 | return -EIO; | |
393 | ||
ba256b41 | 394 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); |
709ee531 HW |
395 | } |
396 | ||
397 | static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, | |
398 | char *buf) | |
399 | { | |
400 | struct acpi_device *acpi = to_acpi_device(dev); | |
401 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
402 | ||
403 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) | |
404 | return -EIO; | |
405 | ||
ba256b41 | 406 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]); |
709ee531 HW |
407 | } |
408 | ||
409 | static ssize_t set_sticky(struct device *dev, struct device_attribute *attr, | |
410 | const char *buf, size_t count) | |
411 | { | |
412 | struct acpi_device *acpi = to_acpi_device(dev); | |
413 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
414 | int val; | |
415 | ||
416 | if (count && sscanf(buf, "%i", &val) == 1 && | |
417 | (val == 0 || val == 1)) { | |
418 | acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); | |
419 | pcc->sticky_mode = val; | |
420 | } | |
421 | ||
422 | return count; | |
423 | } | |
424 | ||
425 | static DEVICE_ATTR(numbatt, S_IRUGO, show_numbatt, NULL); | |
426 | static DEVICE_ATTR(lcdtype, S_IRUGO, show_lcdtype, NULL); | |
427 | static DEVICE_ATTR(mute, S_IRUGO, show_mute, NULL); | |
428 | static DEVICE_ATTR(sticky_key, S_IRUGO | S_IWUSR, show_sticky, set_sticky); | |
429 | ||
430 | static struct attribute *pcc_sysfs_entries[] = { | |
431 | &dev_attr_numbatt.attr, | |
432 | &dev_attr_lcdtype.attr, | |
433 | &dev_attr_mute.attr, | |
434 | &dev_attr_sticky_key.attr, | |
435 | NULL, | |
436 | }; | |
437 | ||
438 | static struct attribute_group pcc_attr_group = { | |
439 | .name = NULL, /* put in device directory */ | |
440 | .attrs = pcc_sysfs_entries, | |
441 | }; | |
442 | ||
443 | ||
444 | /* hotkey input device driver */ | |
445 | ||
446 | static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode) | |
447 | { | |
448 | struct pcc_acpi *pcc = input_get_drvdata(dev); | |
449 | ||
450 | if (scancode >= ARRAY_SIZE(pcc->keymap)) | |
451 | return -EINVAL; | |
452 | ||
453 | *keycode = pcc->keymap[scancode]; | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode) | |
459 | { | |
460 | int i; | |
461 | ||
462 | for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) { | |
463 | if (pcc->keymap[i] == keycode) | |
464 | return i+1; | |
465 | } | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode) | |
471 | { | |
472 | struct pcc_acpi *pcc = input_get_drvdata(dev); | |
473 | int oldkeycode; | |
474 | ||
475 | if (scancode >= ARRAY_SIZE(pcc->keymap)) | |
476 | return -EINVAL; | |
477 | ||
478 | if (keycode < 0 || keycode > KEY_MAX) | |
479 | return -EINVAL; | |
480 | ||
481 | oldkeycode = pcc->keymap[scancode]; | |
482 | pcc->keymap[scancode] = keycode; | |
483 | ||
484 | set_bit(keycode, dev->keybit); | |
485 | ||
486 | if (!keymap_get_by_keycode(pcc, oldkeycode)) | |
487 | clear_bit(oldkeycode, dev->keybit); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) | |
493 | { | |
494 | struct input_dev *hotk_input_dev = pcc->input_dev; | |
495 | int rc; | |
496 | int key_code, hkey_num; | |
3e2dab9a | 497 | unsigned long long result; |
709ee531 | 498 | |
709ee531 HW |
499 | rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, |
500 | NULL, &result); | |
501 | if (!ACPI_SUCCESS(rc)) { | |
502 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
503 | "error getting hotkey status\n")); | |
504 | return; | |
505 | } | |
506 | ||
507 | acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result); | |
508 | ||
509 | hkey_num = result & 0xf; | |
510 | ||
2b190e76 | 511 | if (hkey_num < 0 || hkey_num >= ARRAY_SIZE(pcc->keymap)) { |
709ee531 HW |
512 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
513 | "hotkey number out of range: %d\n", | |
514 | hkey_num)); | |
515 | return; | |
516 | } | |
517 | ||
518 | key_code = pcc->keymap[hkey_num]; | |
519 | ||
520 | if (key_code != KEY_RESERVED) { | |
521 | int pushed = (result & 0x80) ? TRUE : FALSE; | |
522 | ||
523 | input_report_key(hotk_input_dev, key_code, pushed); | |
524 | input_sync(hotk_input_dev); | |
525 | } | |
526 | ||
527 | return; | |
528 | } | |
529 | ||
530 | static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data) | |
531 | { | |
532 | struct pcc_acpi *pcc = (struct pcc_acpi *) data; | |
533 | ||
709ee531 HW |
534 | switch (event) { |
535 | case HKEY_NOTIFY: | |
536 | acpi_pcc_generate_keyinput(pcc); | |
537 | break; | |
538 | default: | |
539 | /* nothing to do */ | |
540 | break; | |
541 | } | |
542 | } | |
543 | ||
544 | static int acpi_pcc_init_input(struct pcc_acpi *pcc) | |
545 | { | |
546 | int i, rc; | |
547 | ||
709ee531 HW |
548 | pcc->input_dev = input_allocate_device(); |
549 | if (!pcc->input_dev) { | |
550 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
551 | "Couldn't allocate input device for hotkey")); | |
552 | return -ENOMEM; | |
553 | } | |
554 | ||
555 | pcc->input_dev->evbit[0] = BIT(EV_KEY); | |
556 | ||
557 | pcc->input_dev->name = ACPI_PCC_DRIVER_NAME; | |
558 | pcc->input_dev->phys = ACPI_PCC_INPUT_PHYS; | |
559 | pcc->input_dev->id.bustype = BUS_HOST; | |
560 | pcc->input_dev->id.vendor = 0x0001; | |
561 | pcc->input_dev->id.product = 0x0001; | |
562 | pcc->input_dev->id.version = 0x0100; | |
563 | pcc->input_dev->getkeycode = pcc_getkeycode; | |
564 | pcc->input_dev->setkeycode = pcc_setkeycode; | |
565 | ||
566 | /* load initial keymap */ | |
567 | memcpy(pcc->keymap, initial_keymap, sizeof(pcc->keymap)); | |
568 | ||
569 | for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) | |
570 | __set_bit(pcc->keymap[i], pcc->input_dev->keybit); | |
571 | __clear_bit(KEY_RESERVED, pcc->input_dev->keybit); | |
572 | ||
573 | input_set_drvdata(pcc->input_dev, pcc); | |
574 | ||
575 | rc = input_register_device(pcc->input_dev); | |
576 | if (rc < 0) | |
577 | input_free_device(pcc->input_dev); | |
578 | ||
579 | return rc; | |
580 | } | |
581 | ||
582 | /* kernel module interface */ | |
583 | ||
584 | static int acpi_pcc_hotkey_resume(struct acpi_device *device) | |
585 | { | |
586 | struct pcc_acpi *pcc = acpi_driver_data(device); | |
587 | acpi_status status = AE_OK; | |
588 | ||
709ee531 HW |
589 | if (device == NULL || pcc == NULL) |
590 | return -EINVAL; | |
591 | ||
592 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n", | |
593 | pcc->sticky_mode)); | |
594 | ||
595 | status = acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode); | |
596 | ||
597 | return status == AE_OK ? 0 : -EINVAL; | |
598 | } | |
599 | ||
600 | static int acpi_pcc_hotkey_add(struct acpi_device *device) | |
601 | { | |
602 | acpi_status status; | |
603 | struct pcc_acpi *pcc; | |
604 | int num_sifr, result; | |
605 | ||
709ee531 HW |
606 | if (!device) |
607 | return -EINVAL; | |
608 | ||
609 | num_sifr = acpi_pcc_get_sqty(device); | |
610 | ||
611 | if (num_sifr > 255) { | |
612 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr too large")); | |
613 | return -ENODEV; | |
614 | } | |
615 | ||
616 | pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); | |
617 | if (!pcc) { | |
618 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
619 | "Couldn't allocate mem for pcc")); | |
620 | return -ENOMEM; | |
621 | } | |
622 | ||
623 | pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL); | |
624 | if (!pcc->sinf) { | |
625 | result = -ENOMEM; | |
626 | goto out_hotkey; | |
627 | } | |
628 | ||
629 | pcc->device = device; | |
630 | pcc->handle = device->handle; | |
631 | pcc->num_sifr = num_sifr; | |
3e2dab9a | 632 | device->driver_data = pcc; |
709ee531 HW |
633 | strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); |
634 | strcpy(acpi_device_class(device), ACPI_PCC_CLASS); | |
635 | ||
636 | result = acpi_pcc_init_input(pcc); | |
637 | if (result) { | |
638 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
639 | "Error installing keyinput handler\n")); | |
640 | goto out_sinf; | |
641 | } | |
642 | ||
643 | /* initialize hotkey input device */ | |
644 | status = acpi_install_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, | |
645 | acpi_pcc_hotkey_notify, pcc); | |
646 | ||
647 | if (ACPI_FAILURE(status)) { | |
648 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
649 | "Error installing notify handler\n")); | |
650 | result = -ENODEV; | |
651 | goto out_input; | |
652 | } | |
653 | ||
654 | /* initialize backlight */ | |
655 | pcc->backlight = backlight_device_register("panasonic", NULL, pcc, | |
656 | &pcc_backlight_ops); | |
657 | if (IS_ERR(pcc->backlight)) | |
658 | goto out_notify; | |
659 | ||
660 | if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) { | |
661 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
662 | "Couldn't retrieve BIOS data\n")); | |
663 | goto out_backlight; | |
664 | } | |
665 | ||
666 | /* read the initial brightness setting from the hardware */ | |
667 | pcc->backlight->props.max_brightness = | |
668 | pcc->sinf[SINF_AC_MAX_BRIGHT]; | |
669 | pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; | |
670 | ||
671 | /* read the initial sticky key mode from the hardware */ | |
672 | pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY]; | |
673 | ||
674 | /* add sysfs attributes */ | |
675 | result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); | |
676 | if (result) | |
677 | goto out_backlight; | |
678 | ||
679 | return 0; | |
680 | ||
681 | out_backlight: | |
682 | backlight_device_unregister(pcc->backlight); | |
683 | out_notify: | |
684 | acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, | |
685 | acpi_pcc_hotkey_notify); | |
686 | out_input: | |
687 | input_unregister_device(pcc->input_dev); | |
688 | /* no need to input_free_device() since core input API refcount and | |
689 | * free()s the device */ | |
690 | out_sinf: | |
691 | kfree(pcc->sinf); | |
692 | out_hotkey: | |
693 | kfree(pcc); | |
694 | ||
695 | return result; | |
696 | } | |
697 | ||
698 | static int __init acpi_pcc_init(void) | |
699 | { | |
700 | int result = 0; | |
701 | ||
709ee531 HW |
702 | if (acpi_disabled) |
703 | return -ENODEV; | |
704 | ||
705 | result = acpi_bus_register_driver(&acpi_pcc_driver); | |
706 | if (result < 0) { | |
707 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
708 | "Error registering hotkey driver\n")); | |
709 | return -ENODEV; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
715 | static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type) | |
716 | { | |
717 | struct pcc_acpi *pcc = acpi_driver_data(device); | |
718 | ||
709ee531 HW |
719 | if (!device || !pcc) |
720 | return -EINVAL; | |
721 | ||
722 | sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); | |
723 | ||
724 | backlight_device_unregister(pcc->backlight); | |
725 | ||
726 | acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, | |
727 | acpi_pcc_hotkey_notify); | |
728 | ||
729 | input_unregister_device(pcc->input_dev); | |
730 | /* no need to input_free_device() since core input API refcount and | |
731 | * free()s the device */ | |
732 | ||
733 | kfree(pcc->sinf); | |
734 | kfree(pcc); | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | static void __exit acpi_pcc_exit(void) | |
740 | { | |
709ee531 HW |
741 | acpi_bus_unregister_driver(&acpi_pcc_driver); |
742 | } | |
743 | ||
744 | module_init(acpi_pcc_init); | |
745 | module_exit(acpi_pcc_exit); |