Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 127 | #include <linux/slab.h> |
709ee531 HW |
128 | #include <acpi/acpi_bus.h> |
129 | #include <acpi/acpi_drivers.h> | |
130 | #include <linux/input.h> | |
1a765cac | 131 | #include <linux/input/sparse-keymap.h> |
709ee531 HW |
132 | |
133 | ||
134 | #ifndef ACPI_HOTKEY_COMPONENT | |
135 | #define ACPI_HOTKEY_COMPONENT 0x10000000 | |
136 | #endif | |
137 | ||
138 | #define _COMPONENT ACPI_HOTKEY_COMPONENT | |
139 | ||
140 | MODULE_AUTHOR("Hiroshi Miura, David Bronaugh and Harald Welte"); | |
141 | MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops"); | |
142 | MODULE_LICENSE("GPL"); | |
143 | ||
144 | #define LOGPREFIX "pcc_acpi: " | |
145 | ||
146 | /* Define ACPI PATHs */ | |
147 | /* Lets note hotkeys */ | |
148 | #define METHOD_HKEY_QUERY "HINF" | |
149 | #define METHOD_HKEY_SQTY "SQTY" | |
150 | #define METHOD_HKEY_SINF "SINF" | |
151 | #define METHOD_HKEY_SSET "SSET" | |
152 | #define HKEY_NOTIFY 0x80 | |
153 | ||
154 | #define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support" | |
155 | #define ACPI_PCC_DEVICE_NAME "Hotkey" | |
156 | #define ACPI_PCC_CLASS "pcc" | |
157 | ||
158 | #define ACPI_PCC_INPUT_PHYS "panasonic/hkey0" | |
159 | ||
160 | /* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent | |
161 | ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00 | |
162 | */ | |
163 | enum SINF_BITS { SINF_NUM_BATTERIES = 0, | |
164 | SINF_LCD_TYPE, | |
165 | SINF_AC_MAX_BRIGHT, | |
166 | SINF_AC_MIN_BRIGHT, | |
167 | SINF_AC_CUR_BRIGHT, | |
168 | SINF_DC_MAX_BRIGHT, | |
169 | SINF_DC_MIN_BRIGHT, | |
170 | SINF_DC_CUR_BRIGHT, | |
171 | SINF_MUTE, | |
172 | SINF_RESERVED, | |
173 | SINF_ENV_STATE, | |
174 | SINF_STICKY_KEY = 0x80, | |
175 | }; | |
176 | /* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */ | |
177 | ||
178 | static int acpi_pcc_hotkey_add(struct acpi_device *device); | |
51fac838 | 179 | static int acpi_pcc_hotkey_remove(struct acpi_device *device); |
cddd1f71 | 180 | static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event); |
709ee531 HW |
181 | |
182 | static const struct acpi_device_id pcc_device_ids[] = { | |
183 | { "MAT0012", 0}, | |
184 | { "MAT0013", 0}, | |
185 | { "MAT0018", 0}, | |
186 | { "MAT0019", 0}, | |
187 | { "", 0}, | |
188 | }; | |
c542aade | 189 | MODULE_DEVICE_TABLE(acpi, pcc_device_ids); |
709ee531 | 190 | |
3567a4e2 | 191 | #ifdef CONFIG_PM_SLEEP |
a7377419 | 192 | static int acpi_pcc_hotkey_resume(struct device *dev); |
3567a4e2 | 193 | #endif |
a7377419 RW |
194 | static SIMPLE_DEV_PM_OPS(acpi_pcc_hotkey_pm, NULL, acpi_pcc_hotkey_resume); |
195 | ||
709ee531 HW |
196 | static struct acpi_driver acpi_pcc_driver = { |
197 | .name = ACPI_PCC_DRIVER_NAME, | |
198 | .class = ACPI_PCC_CLASS, | |
199 | .ids = pcc_device_ids, | |
200 | .ops = { | |
201 | .add = acpi_pcc_hotkey_add, | |
202 | .remove = acpi_pcc_hotkey_remove, | |
cddd1f71 | 203 | .notify = acpi_pcc_hotkey_notify, |
709ee531 | 204 | }, |
a7377419 | 205 | .drv.pm = &acpi_pcc_hotkey_pm, |
709ee531 HW |
206 | }; |
207 | ||
1a765cac DT |
208 | static const struct key_entry panasonic_keymap[] = { |
209 | { KE_KEY, 0, { KEY_RESERVED } }, | |
210 | { KE_KEY, 1, { KEY_BRIGHTNESSDOWN } }, | |
211 | { KE_KEY, 2, { KEY_BRIGHTNESSUP } }, | |
212 | { KE_KEY, 3, { KEY_DISPLAYTOGGLE } }, | |
213 | { KE_KEY, 4, { KEY_MUTE } }, | |
214 | { KE_KEY, 5, { KEY_VOLUMEDOWN } }, | |
215 | { KE_KEY, 6, { KEY_VOLUMEUP } }, | |
216 | { KE_KEY, 7, { KEY_SLEEP } }, | |
217 | { KE_KEY, 8, { KEY_PROG1 } }, /* Change CPU boost */ | |
218 | { KE_KEY, 9, { KEY_BATTERY } }, | |
219 | { KE_KEY, 10, { KEY_SUSPEND } }, | |
220 | { KE_END, 0 } | |
709ee531 HW |
221 | }; |
222 | ||
223 | struct pcc_acpi { | |
224 | acpi_handle handle; | |
225 | unsigned long num_sifr; | |
226 | int sticky_mode; | |
1a765cac | 227 | u32 *sinf; |
709ee531 HW |
228 | struct acpi_device *device; |
229 | struct input_dev *input_dev; | |
230 | struct backlight_device *backlight; | |
709ee531 HW |
231 | }; |
232 | ||
233 | struct pcc_keyinput { | |
234 | struct acpi_hotkey *hotkey; | |
235 | }; | |
236 | ||
237 | /* method access functions */ | |
238 | static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) | |
239 | { | |
240 | union acpi_object in_objs[] = { | |
241 | { .integer.type = ACPI_TYPE_INTEGER, | |
242 | .integer.value = func, }, | |
243 | { .integer.type = ACPI_TYPE_INTEGER, | |
244 | .integer.value = val, }, | |
245 | }; | |
246 | struct acpi_object_list params = { | |
247 | .count = ARRAY_SIZE(in_objs), | |
248 | .pointer = in_objs, | |
249 | }; | |
250 | acpi_status status = AE_OK; | |
251 | ||
709ee531 HW |
252 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, |
253 | ¶ms, NULL); | |
254 | ||
9fab10cd | 255 | return (status == AE_OK) ? 0 : -EIO; |
709ee531 HW |
256 | } |
257 | ||
258 | static inline int acpi_pcc_get_sqty(struct acpi_device *device) | |
259 | { | |
3e2dab9a | 260 | unsigned long long s; |
709ee531 HW |
261 | acpi_status status; |
262 | ||
709ee531 HW |
263 | status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, |
264 | NULL, &s); | |
265 | if (ACPI_SUCCESS(status)) | |
266 | return s; | |
267 | else { | |
268 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
269 | "evaluation error HKEY.SQTY\n")); | |
270 | return -EINVAL; | |
271 | } | |
272 | } | |
273 | ||
e253fb94 | 274 | static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc) |
709ee531 HW |
275 | { |
276 | acpi_status status; | |
277 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
278 | union acpi_object *hkey = NULL; | |
279 | int i; | |
280 | ||
a3c27056 | 281 | status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL, |
709ee531 HW |
282 | &buffer); |
283 | if (ACPI_FAILURE(status)) { | |
284 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
285 | "evaluation error HKEY.SINF\n")); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | hkey = buffer.pointer; | |
290 | if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { | |
291 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n")); | |
aa13857f | 292 | status = AE_ERROR; |
709ee531 HW |
293 | goto end; |
294 | } | |
295 | ||
296 | if (pcc->num_sifr < hkey->package.count) { | |
297 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
298 | "SQTY reports bad SINF length\n")); | |
299 | status = AE_ERROR; | |
300 | goto end; | |
301 | } | |
302 | ||
303 | for (i = 0; i < hkey->package.count; i++) { | |
304 | union acpi_object *element = &(hkey->package.elements[i]); | |
305 | if (likely(element->type == ACPI_TYPE_INTEGER)) { | |
e253fb94 | 306 | pcc->sinf[i] = element->integer.value; |
709ee531 HW |
307 | } else |
308 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
309 | "Invalid HKEY.SINF data\n")); | |
310 | } | |
e253fb94 | 311 | pcc->sinf[hkey->package.count] = -1; |
709ee531 HW |
312 | |
313 | end: | |
314 | kfree(buffer.pointer); | |
315 | return status == AE_OK; | |
316 | } | |
317 | ||
318 | /* backlight API interface functions */ | |
319 | ||
320 | /* This driver currently treats AC and DC brightness identical, | |
321 | * since we don't need to invent an interface to the core ACPI | |
322 | * logic to receive events in case a power supply is plugged in | |
323 | * or removed */ | |
324 | ||
325 | static int bl_get(struct backlight_device *bd) | |
326 | { | |
327 | struct pcc_acpi *pcc = bl_get_data(bd); | |
328 | ||
e253fb94 | 329 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
330 | return -EIO; |
331 | ||
332 | return pcc->sinf[SINF_AC_CUR_BRIGHT]; | |
333 | } | |
334 | ||
335 | static int bl_set_status(struct backlight_device *bd) | |
336 | { | |
337 | struct pcc_acpi *pcc = bl_get_data(bd); | |
338 | int bright = bd->props.brightness; | |
339 | int rc; | |
340 | ||
e253fb94 | 341 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
342 | return -EIO; |
343 | ||
344 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) | |
345 | bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; | |
346 | ||
347 | if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) | |
348 | bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; | |
349 | ||
350 | if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || | |
351 | bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) | |
352 | return -EINVAL; | |
353 | ||
354 | rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); | |
355 | if (rc < 0) | |
356 | return rc; | |
357 | ||
358 | return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); | |
359 | } | |
360 | ||
ec57af9c | 361 | static const struct backlight_ops pcc_backlight_ops = { |
709ee531 HW |
362 | .get_brightness = bl_get, |
363 | .update_status = bl_set_status, | |
364 | }; | |
365 | ||
366 | ||
367 | /* sysfs user interface functions */ | |
368 | ||
369 | static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr, | |
370 | char *buf) | |
371 | { | |
372 | struct acpi_device *acpi = to_acpi_device(dev); | |
373 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
374 | ||
e253fb94 | 375 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
376 | return -EIO; |
377 | ||
ba256b41 | 378 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); |
709ee531 HW |
379 | } |
380 | ||
381 | static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, | |
382 | char *buf) | |
383 | { | |
384 | struct acpi_device *acpi = to_acpi_device(dev); | |
385 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
386 | ||
e253fb94 | 387 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
388 | return -EIO; |
389 | ||
ba256b41 | 390 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); |
709ee531 HW |
391 | } |
392 | ||
393 | static ssize_t show_mute(struct device *dev, struct device_attribute *attr, | |
394 | char *buf) | |
395 | { | |
396 | struct acpi_device *acpi = to_acpi_device(dev); | |
397 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
398 | ||
e253fb94 | 399 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
400 | return -EIO; |
401 | ||
ba256b41 | 402 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); |
709ee531 HW |
403 | } |
404 | ||
405 | static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, | |
406 | char *buf) | |
407 | { | |
408 | struct acpi_device *acpi = to_acpi_device(dev); | |
409 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
410 | ||
e253fb94 | 411 | if (!acpi_pcc_retrieve_biosdata(pcc)) |
709ee531 HW |
412 | return -EIO; |
413 | ||
ba256b41 | 414 | return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]); |
709ee531 HW |
415 | } |
416 | ||
417 | static ssize_t set_sticky(struct device *dev, struct device_attribute *attr, | |
418 | const char *buf, size_t count) | |
419 | { | |
420 | struct acpi_device *acpi = to_acpi_device(dev); | |
421 | struct pcc_acpi *pcc = acpi_driver_data(acpi); | |
422 | int val; | |
423 | ||
424 | if (count && sscanf(buf, "%i", &val) == 1 && | |
425 | (val == 0 || val == 1)) { | |
426 | acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); | |
427 | pcc->sticky_mode = val; | |
428 | } | |
429 | ||
430 | return count; | |
431 | } | |
432 | ||
433 | static DEVICE_ATTR(numbatt, S_IRUGO, show_numbatt, NULL); | |
434 | static DEVICE_ATTR(lcdtype, S_IRUGO, show_lcdtype, NULL); | |
435 | static DEVICE_ATTR(mute, S_IRUGO, show_mute, NULL); | |
436 | static DEVICE_ATTR(sticky_key, S_IRUGO | S_IWUSR, show_sticky, set_sticky); | |
437 | ||
438 | static struct attribute *pcc_sysfs_entries[] = { | |
439 | &dev_attr_numbatt.attr, | |
440 | &dev_attr_lcdtype.attr, | |
441 | &dev_attr_mute.attr, | |
442 | &dev_attr_sticky_key.attr, | |
443 | NULL, | |
444 | }; | |
445 | ||
446 | static struct attribute_group pcc_attr_group = { | |
447 | .name = NULL, /* put in device directory */ | |
448 | .attrs = pcc_sysfs_entries, | |
449 | }; | |
450 | ||
451 | ||
452 | /* hotkey input device driver */ | |
453 | ||
709ee531 HW |
454 | static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) |
455 | { | |
456 | struct input_dev *hotk_input_dev = pcc->input_dev; | |
457 | int rc; | |
3e2dab9a | 458 | unsigned long long result; |
709ee531 | 459 | |
709ee531 HW |
460 | rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, |
461 | NULL, &result); | |
462 | if (!ACPI_SUCCESS(rc)) { | |
463 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
464 | "error getting hotkey status\n")); | |
465 | return; | |
466 | } | |
467 | ||
468 | acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result); | |
469 | ||
1a765cac DT |
470 | if (!sparse_keymap_report_event(hotk_input_dev, |
471 | result & 0xf, result & 0x80, false)) | |
709ee531 | 472 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1a765cac | 473 | "Unknown hotkey event: %d\n", result)); |
709ee531 HW |
474 | } |
475 | ||
cddd1f71 | 476 | static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event) |
709ee531 | 477 | { |
cddd1f71 | 478 | struct pcc_acpi *pcc = acpi_driver_data(device); |
709ee531 | 479 | |
709ee531 HW |
480 | switch (event) { |
481 | case HKEY_NOTIFY: | |
482 | acpi_pcc_generate_keyinput(pcc); | |
483 | break; | |
484 | default: | |
485 | /* nothing to do */ | |
486 | break; | |
487 | } | |
488 | } | |
489 | ||
490 | static int acpi_pcc_init_input(struct pcc_acpi *pcc) | |
491 | { | |
1a765cac DT |
492 | struct input_dev *input_dev; |
493 | int error; | |
709ee531 | 494 | |
1a765cac DT |
495 | input_dev = input_allocate_device(); |
496 | if (!input_dev) { | |
709ee531 HW |
497 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
498 | "Couldn't allocate input device for hotkey")); | |
499 | return -ENOMEM; | |
500 | } | |
501 | ||
1a765cac DT |
502 | input_dev->name = ACPI_PCC_DRIVER_NAME; |
503 | input_dev->phys = ACPI_PCC_INPUT_PHYS; | |
504 | input_dev->id.bustype = BUS_HOST; | |
505 | input_dev->id.vendor = 0x0001; | |
506 | input_dev->id.product = 0x0001; | |
507 | input_dev->id.version = 0x0100; | |
709ee531 | 508 | |
1a765cac DT |
509 | error = sparse_keymap_setup(input_dev, panasonic_keymap, NULL); |
510 | if (error) { | |
511 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
512 | "Unable to setup input device keymap\n")); | |
513 | goto err_free_dev; | |
514 | } | |
709ee531 | 515 | |
1a765cac DT |
516 | error = input_register_device(input_dev); |
517 | if (error) { | |
518 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
519 | "Unable to register input device\n")); | |
520 | goto err_free_keymap; | |
521 | } | |
709ee531 | 522 | |
1a765cac DT |
523 | pcc->input_dev = input_dev; |
524 | return 0; | |
709ee531 | 525 | |
1a765cac DT |
526 | err_free_keymap: |
527 | sparse_keymap_free(input_dev); | |
528 | err_free_dev: | |
529 | input_free_device(input_dev); | |
530 | return error; | |
531 | } | |
709ee531 | 532 | |
1a765cac DT |
533 | static void acpi_pcc_destroy_input(struct pcc_acpi *pcc) |
534 | { | |
535 | sparse_keymap_free(pcc->input_dev); | |
536 | input_unregister_device(pcc->input_dev); | |
537 | /* | |
538 | * No need to input_free_device() since core input API refcounts | |
539 | * and free()s the device. | |
540 | */ | |
709ee531 HW |
541 | } |
542 | ||
543 | /* kernel module interface */ | |
544 | ||
3567a4e2 | 545 | #ifdef CONFIG_PM_SLEEP |
a7377419 | 546 | static int acpi_pcc_hotkey_resume(struct device *dev) |
709ee531 | 547 | { |
a7377419 RW |
548 | struct pcc_acpi *pcc; |
549 | ||
550 | if (!dev) | |
551 | return -EINVAL; | |
709ee531 | 552 | |
a7377419 RW |
553 | pcc = acpi_driver_data(to_acpi_device(dev)); |
554 | if (!pcc) | |
709ee531 HW |
555 | return -EINVAL; |
556 | ||
557 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n", | |
558 | pcc->sticky_mode)); | |
559 | ||
9fab10cd | 560 | return acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode); |
709ee531 | 561 | } |
3567a4e2 | 562 | #endif |
709ee531 HW |
563 | |
564 | static int acpi_pcc_hotkey_add(struct acpi_device *device) | |
565 | { | |
a19a6ee6 | 566 | struct backlight_properties props; |
709ee531 HW |
567 | struct pcc_acpi *pcc; |
568 | int num_sifr, result; | |
569 | ||
709ee531 HW |
570 | if (!device) |
571 | return -EINVAL; | |
572 | ||
573 | num_sifr = acpi_pcc_get_sqty(device); | |
574 | ||
e424fb8c XW |
575 | if (num_sifr < 0 || num_sifr > 255) { |
576 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr out of range")); | |
709ee531 HW |
577 | return -ENODEV; |
578 | } | |
579 | ||
580 | pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); | |
581 | if (!pcc) { | |
582 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
583 | "Couldn't allocate mem for pcc")); | |
584 | return -ENOMEM; | |
585 | } | |
586 | ||
587 | pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL); | |
588 | if (!pcc->sinf) { | |
589 | result = -ENOMEM; | |
590 | goto out_hotkey; | |
591 | } | |
592 | ||
593 | pcc->device = device; | |
594 | pcc->handle = device->handle; | |
595 | pcc->num_sifr = num_sifr; | |
3e2dab9a | 596 | device->driver_data = pcc; |
709ee531 HW |
597 | strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); |
598 | strcpy(acpi_device_class(device), ACPI_PCC_CLASS); | |
599 | ||
600 | result = acpi_pcc_init_input(pcc); | |
601 | if (result) { | |
602 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
603 | "Error installing keyinput handler\n")); | |
1a765cac | 604 | goto out_sinf; |
709ee531 HW |
605 | } |
606 | ||
e253fb94 | 607 | if (!acpi_pcc_retrieve_biosdata(pcc)) { |
709ee531 HW |
608 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
609 | "Couldn't retrieve BIOS data\n")); | |
aa13857f | 610 | result = -EIO; |
a19a6ee6 | 611 | goto out_input; |
709ee531 | 612 | } |
a19a6ee6 MG |
613 | /* initialize backlight */ |
614 | memset(&props, 0, sizeof(struct backlight_properties)); | |
bb7ca747 | 615 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 MG |
616 | props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT]; |
617 | pcc->backlight = backlight_device_register("panasonic", NULL, pcc, | |
618 | &pcc_backlight_ops, &props); | |
ec57af9c BP |
619 | if (IS_ERR(pcc->backlight)) { |
620 | result = PTR_ERR(pcc->backlight); | |
1a765cac | 621 | goto out_input; |
ec57af9c | 622 | } |
709ee531 HW |
623 | |
624 | /* read the initial brightness setting from the hardware */ | |
709ee531 HW |
625 | pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; |
626 | ||
627 | /* read the initial sticky key mode from the hardware */ | |
628 | pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY]; | |
629 | ||
630 | /* add sysfs attributes */ | |
631 | result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); | |
632 | if (result) | |
633 | goto out_backlight; | |
634 | ||
635 | return 0; | |
636 | ||
637 | out_backlight: | |
638 | backlight_device_unregister(pcc->backlight); | |
1a765cac DT |
639 | out_input: |
640 | acpi_pcc_destroy_input(pcc); | |
a19a6ee6 MG |
641 | out_sinf: |
642 | kfree(pcc->sinf); | |
709ee531 HW |
643 | out_hotkey: |
644 | kfree(pcc); | |
645 | ||
646 | return result; | |
647 | } | |
648 | ||
649 | static int __init acpi_pcc_init(void) | |
650 | { | |
651 | int result = 0; | |
652 | ||
709ee531 HW |
653 | if (acpi_disabled) |
654 | return -ENODEV; | |
655 | ||
656 | result = acpi_bus_register_driver(&acpi_pcc_driver); | |
657 | if (result < 0) { | |
658 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
659 | "Error registering hotkey driver\n")); | |
660 | return -ENODEV; | |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
51fac838 | 666 | static int acpi_pcc_hotkey_remove(struct acpi_device *device) |
709ee531 HW |
667 | { |
668 | struct pcc_acpi *pcc = acpi_driver_data(device); | |
669 | ||
709ee531 HW |
670 | if (!device || !pcc) |
671 | return -EINVAL; | |
672 | ||
673 | sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); | |
674 | ||
675 | backlight_device_unregister(pcc->backlight); | |
676 | ||
1a765cac | 677 | acpi_pcc_destroy_input(pcc); |
709ee531 HW |
678 | |
679 | kfree(pcc->sinf); | |
680 | kfree(pcc); | |
681 | ||
682 | return 0; | |
683 | } | |
684 | ||
685 | static void __exit acpi_pcc_exit(void) | |
686 | { | |
709ee531 HW |
687 | acpi_bus_unregister_driver(&acpi_pcc_driver); |
688 | } | |
689 | ||
690 | module_init(acpi_pcc_init); | |
691 | module_exit(acpi_pcc_exit); |