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