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Commit | Line | Data |
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6f2fad74 NB |
1 | /* |
2 | * drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature | |
3 | * sensors, fan control, keyboard backlight control) used in Intel-based Apple | |
4 | * computers. | |
5 | * | |
6 | * Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch> | |
7 | * | |
8 | * Based on hdaps.c driver: | |
9 | * Copyright (C) 2005 Robert Love <rml@novell.com> | |
10 | * Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com> | |
11 | * | |
12 | * Fan control based on smcFanControl: | |
13 | * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License v2 as published by the | |
17 | * Free Software Foundation. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
20 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
21 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
22 | * more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License along with | |
25 | * this program; if not, write to the Free Software Foundation, Inc., | |
26 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | |
27 | */ | |
28 | ||
1ee7c71b JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
6f2fad74 NB |
31 | #include <linux/delay.h> |
32 | #include <linux/platform_device.h> | |
d5cf2b99 | 33 | #include <linux/input-polldev.h> |
6f2fad74 | 34 | #include <linux/kernel.h> |
5874583d | 35 | #include <linux/slab.h> |
6f2fad74 NB |
36 | #include <linux/module.h> |
37 | #include <linux/timer.h> | |
38 | #include <linux/dmi.h> | |
39 | #include <linux/mutex.h> | |
40 | #include <linux/hwmon-sysfs.h> | |
6055fae8 | 41 | #include <linux/io.h> |
6f2fad74 NB |
42 | #include <linux/leds.h> |
43 | #include <linux/hwmon.h> | |
44 | #include <linux/workqueue.h> | |
45 | ||
46 | /* data port used by Apple SMC */ | |
47 | #define APPLESMC_DATA_PORT 0x300 | |
48 | /* command/status port used by Apple SMC */ | |
49 | #define APPLESMC_CMD_PORT 0x304 | |
50 | ||
51 | #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ | |
52 | ||
53 | #define APPLESMC_MAX_DATA_LENGTH 32 | |
54 | ||
5874583d | 55 | /* wait up to 32 ms for a status change. */ |
8c9398d1 HR |
56 | #define APPLESMC_MIN_WAIT 0x0040 |
57 | #define APPLESMC_MAX_WAIT 0x8000 | |
58 | ||
6f2fad74 NB |
59 | #define APPLESMC_STATUS_MASK 0x0f |
60 | #define APPLESMC_READ_CMD 0x10 | |
61 | #define APPLESMC_WRITE_CMD 0x11 | |
62 | #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 | |
63 | #define APPLESMC_GET_KEY_TYPE_CMD 0x13 | |
64 | ||
65 | #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */ | |
66 | ||
8bd1a12a HR |
67 | #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */ |
68 | #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */ | |
d5cf2b99 | 69 | #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */ |
6f2fad74 | 70 | |
d5cf2b99 | 71 | #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */ |
6f2fad74 NB |
72 | |
73 | #define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */ | |
74 | #define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */ | |
75 | #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */ | |
76 | #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */ | |
77 | ||
78 | #define FANS_COUNT "FNum" /* r-o ui8 */ | |
79 | #define FANS_MANUAL "FS! " /* r-w ui16 */ | |
80 | #define FAN_ACTUAL_SPEED "F0Ac" /* r-o fpe2 (2 bytes) */ | |
81 | #define FAN_MIN_SPEED "F0Mn" /* r-o fpe2 (2 bytes) */ | |
82 | #define FAN_MAX_SPEED "F0Mx" /* r-o fpe2 (2 bytes) */ | |
83 | #define FAN_SAFE_SPEED "F0Sf" /* r-o fpe2 (2 bytes) */ | |
84 | #define FAN_TARGET_SPEED "F0Tg" /* r-w fpe2 (2 bytes) */ | |
85 | #define FAN_POSITION "F0ID" /* r-o char[16] */ | |
86 | ||
6f2fad74 NB |
87 | /* List of keys used to read/write fan speeds */ |
88 | static const char* fan_speed_keys[] = { | |
89 | FAN_ACTUAL_SPEED, | |
90 | FAN_MIN_SPEED, | |
91 | FAN_MAX_SPEED, | |
92 | FAN_SAFE_SPEED, | |
93 | FAN_TARGET_SPEED | |
94 | }; | |
95 | ||
96 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
97 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
98 | ||
d5cf2b99 | 99 | #define APPLESMC_POLL_INTERVAL 50 /* msecs */ |
6f2fad74 NB |
100 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ |
101 | #define APPLESMC_INPUT_FLAT 4 | |
102 | ||
103 | #define SENSOR_X 0 | |
104 | #define SENSOR_Y 1 | |
105 | #define SENSOR_Z 2 | |
106 | ||
9792dadf HR |
107 | #define to_index(attr) (to_sensor_dev_attr(attr)->index) |
108 | ||
9792dadf HR |
109 | /* Dynamic device node attributes */ |
110 | struct applesmc_dev_attr { | |
111 | struct sensor_device_attribute sda; /* hwmon attributes */ | |
112 | char name[32]; /* room for node file name */ | |
113 | }; | |
114 | ||
115 | /* Dynamic device node group */ | |
116 | struct applesmc_node_group { | |
117 | char *format; /* format string */ | |
118 | void *show; /* show function */ | |
119 | void *store; /* store function */ | |
120 | struct applesmc_dev_attr *nodes; /* dynamic node array */ | |
121 | }; | |
122 | ||
5874583d HR |
123 | /* AppleSMC entry - cached register information */ |
124 | struct applesmc_entry { | |
125 | char key[5]; /* four-letter key code */ | |
126 | u8 valid; /* set when entry is successfully read once */ | |
127 | u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */ | |
128 | char type[5]; /* four-letter type code */ | |
129 | u8 flags; /* 0x10: func; 0x40: write; 0x80: read */ | |
130 | }; | |
131 | ||
132 | /* Register lookup and registers common to all SMCs */ | |
133 | static struct applesmc_registers { | |
134 | struct mutex mutex; /* register read/write mutex */ | |
135 | unsigned int key_count; /* number of SMC registers */ | |
9792dadf HR |
136 | unsigned int temp_count; /* number of temperature registers */ |
137 | unsigned int temp_begin; /* temperature lower index bound */ | |
138 | unsigned int temp_end; /* temperature upper index bound */ | |
40ef06f1 HR |
139 | int num_light_sensors; /* number of light sensors */ |
140 | bool has_accelerometer; /* has motion sensor */ | |
141 | bool has_key_backlight; /* has keyboard backlight */ | |
5874583d HR |
142 | bool init_complete; /* true when fully initialized */ |
143 | struct applesmc_entry *cache; /* cached key entries */ | |
144 | } smcreg = { | |
145 | .mutex = __MUTEX_INITIALIZER(smcreg.mutex), | |
146 | }; | |
147 | ||
6f2fad74 NB |
148 | static const int debug; |
149 | static struct platform_device *pdev; | |
150 | static s16 rest_x; | |
151 | static s16 rest_y; | |
a976f150 HR |
152 | static u8 backlight_state[2]; |
153 | ||
1beeffe4 | 154 | static struct device *hwmon_dev; |
d5cf2b99 | 155 | static struct input_polled_dev *applesmc_idev; |
6f2fad74 | 156 | |
0559a538 HR |
157 | /* The number of fans handled by the driver */ |
158 | static unsigned int fans_handled; | |
159 | ||
6f2fad74 NB |
160 | /* |
161 | * Last index written to key_at_index sysfs file, and value to use for all other | |
162 | * key_at_index_* sysfs files. | |
163 | */ | |
164 | static unsigned int key_at_index; | |
165 | ||
166 | static struct workqueue_struct *applesmc_led_wq; | |
167 | ||
168 | /* | |
8c9398d1 | 169 | * __wait_status - Wait up to 32ms for the status port to get a certain value |
6f2fad74 NB |
170 | * (masked with 0x0f), returning zero if the value is obtained. Callers must |
171 | * hold applesmc_lock. | |
172 | */ | |
173 | static int __wait_status(u8 val) | |
174 | { | |
8c9398d1 | 175 | int us; |
6f2fad74 NB |
176 | |
177 | val = val & APPLESMC_STATUS_MASK; | |
178 | ||
8c9398d1 HR |
179 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
180 | udelay(us); | |
6f2fad74 | 181 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { |
6f2fad74 NB |
182 | return 0; |
183 | } | |
6f2fad74 NB |
184 | } |
185 | ||
6f2fad74 NB |
186 | return -EIO; |
187 | } | |
188 | ||
84d2d7f2 HR |
189 | /* |
190 | * special treatment of command port - on newer macbooks, it seems necessary | |
191 | * to resend the command byte before polling the status again. Callers must | |
192 | * hold applesmc_lock. | |
193 | */ | |
194 | static int send_command(u8 cmd) | |
195 | { | |
8c9398d1 HR |
196 | int us; |
197 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { | |
84d2d7f2 | 198 | outb(cmd, APPLESMC_CMD_PORT); |
8c9398d1 | 199 | udelay(us); |
84d2d7f2 HR |
200 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c) |
201 | return 0; | |
84d2d7f2 | 202 | } |
84d2d7f2 HR |
203 | return -EIO; |
204 | } | |
205 | ||
5874583d | 206 | static int send_argument(const char *key) |
6f2fad74 NB |
207 | { |
208 | int i; | |
209 | ||
6f2fad74 NB |
210 | for (i = 0; i < 4; i++) { |
211 | outb(key[i], APPLESMC_DATA_PORT); | |
212 | if (__wait_status(0x04)) | |
213 | return -EIO; | |
214 | } | |
5874583d HR |
215 | return 0; |
216 | } | |
217 | ||
218 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
219 | { | |
220 | int i; | |
221 | ||
222 | if (send_command(cmd) || send_argument(key)) { | |
223 | pr_warn("%s: read arg fail\n", key); | |
224 | return -EIO; | |
225 | } | |
6f2fad74 NB |
226 | |
227 | outb(len, APPLESMC_DATA_PORT); | |
6f2fad74 NB |
228 | |
229 | for (i = 0; i < len; i++) { | |
5874583d HR |
230 | if (__wait_status(0x05)) { |
231 | pr_warn("%s: read data fail\n", key); | |
6f2fad74 | 232 | return -EIO; |
5874583d | 233 | } |
6f2fad74 | 234 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 235 | } |
6f2fad74 NB |
236 | |
237 | return 0; | |
238 | } | |
239 | ||
5874583d | 240 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
241 | { |
242 | int i; | |
243 | ||
5874583d HR |
244 | if (send_command(cmd) || send_argument(key)) { |
245 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 246 | return -EIO; |
6f2fad74 NB |
247 | } |
248 | ||
249 | outb(len, APPLESMC_DATA_PORT); | |
250 | ||
251 | for (i = 0; i < len; i++) { | |
5874583d HR |
252 | if (__wait_status(0x04)) { |
253 | pr_warn("%s: write data fail\n", key); | |
6f2fad74 | 254 | return -EIO; |
5874583d | 255 | } |
6f2fad74 NB |
256 | outb(buffer[i], APPLESMC_DATA_PORT); |
257 | } | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
5874583d HR |
262 | static int read_register_count(unsigned int *count) |
263 | { | |
264 | __be32 be; | |
265 | int ret; | |
266 | ||
267 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
268 | if (ret) | |
269 | return ret; | |
270 | ||
271 | *count = be32_to_cpu(be); | |
272 | return 0; | |
273 | } | |
274 | ||
6f2fad74 | 275 | /* |
5874583d HR |
276 | * Serialized I/O |
277 | * | |
278 | * Returns zero on success or a negative error on failure. | |
279 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 280 | */ |
5874583d HR |
281 | |
282 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
283 | u8 *buf, u8 len) | |
6f2fad74 | 284 | { |
5874583d | 285 | int ret; |
6f2fad74 | 286 | |
5874583d HR |
287 | if (entry->len != len) |
288 | return -EINVAL; | |
289 | mutex_lock(&smcreg.mutex); | |
290 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
291 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 292 | |
5874583d HR |
293 | return ret; |
294 | } | |
295 | ||
296 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
297 | const u8 *buf, u8 len) | |
298 | { | |
299 | int ret; | |
300 | ||
301 | if (entry->len != len) | |
302 | return -EINVAL; | |
303 | mutex_lock(&smcreg.mutex); | |
304 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
305 | mutex_unlock(&smcreg.mutex); | |
306 | return ret; | |
307 | } | |
308 | ||
309 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
310 | { | |
311 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
312 | u8 key[4], info[6]; | |
313 | __be32 be; | |
314 | int ret = 0; | |
315 | ||
316 | if (cache->valid) | |
317 | return cache; | |
318 | ||
319 | mutex_lock(&smcreg.mutex); | |
320 | ||
321 | if (cache->valid) | |
322 | goto out; | |
323 | be = cpu_to_be32(index); | |
324 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
325 | if (ret) | |
326 | goto out; | |
327 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
328 | if (ret) | |
329 | goto out; | |
330 | ||
331 | memcpy(cache->key, key, 4); | |
332 | cache->len = info[0]; | |
333 | memcpy(cache->type, &info[1], 4); | |
334 | cache->flags = info[5]; | |
335 | cache->valid = 1; | |
336 | ||
337 | out: | |
338 | mutex_unlock(&smcreg.mutex); | |
339 | if (ret) | |
340 | return ERR_PTR(ret); | |
341 | return cache; | |
342 | } | |
343 | ||
344 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
345 | { | |
346 | int begin = 0, end = smcreg.key_count; | |
347 | const struct applesmc_entry *entry; | |
348 | ||
349 | while (begin != end) { | |
350 | int middle = begin + (end - begin) / 2; | |
351 | entry = applesmc_get_entry_by_index(middle); | |
352 | if (IS_ERR(entry)) | |
353 | return PTR_ERR(entry); | |
354 | if (strcmp(entry->key, key) < 0) | |
355 | begin = middle + 1; | |
356 | else | |
357 | end = middle; | |
6f2fad74 NB |
358 | } |
359 | ||
5874583d HR |
360 | *lo = begin; |
361 | return 0; | |
362 | } | |
6f2fad74 | 363 | |
5874583d HR |
364 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
365 | { | |
366 | int begin = 0, end = smcreg.key_count; | |
367 | const struct applesmc_entry *entry; | |
368 | ||
369 | while (begin != end) { | |
370 | int middle = begin + (end - begin) / 2; | |
371 | entry = applesmc_get_entry_by_index(middle); | |
372 | if (IS_ERR(entry)) | |
373 | return PTR_ERR(entry); | |
374 | if (strcmp(key, entry->key) < 0) | |
375 | end = middle; | |
376 | else | |
377 | begin = middle + 1; | |
6f2fad74 | 378 | } |
6f2fad74 | 379 | |
5874583d | 380 | *hi = begin; |
6f2fad74 NB |
381 | return 0; |
382 | } | |
383 | ||
5874583d | 384 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 385 | { |
5874583d HR |
386 | int begin, end; |
387 | int ret; | |
6f2fad74 | 388 | |
5874583d HR |
389 | ret = applesmc_get_lower_bound(&begin, key); |
390 | if (ret) | |
391 | return ERR_PTR(ret); | |
392 | ret = applesmc_get_upper_bound(&end, key); | |
393 | if (ret) | |
394 | return ERR_PTR(ret); | |
395 | if (end - begin != 1) | |
396 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 397 | |
5874583d HR |
398 | return applesmc_get_entry_by_index(begin); |
399 | } | |
6f2fad74 | 400 | |
5874583d HR |
401 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
402 | { | |
403 | const struct applesmc_entry *entry; | |
6f2fad74 | 404 | |
5874583d HR |
405 | entry = applesmc_get_entry_by_key(key); |
406 | if (IS_ERR(entry)) | |
407 | return PTR_ERR(entry); | |
6f2fad74 | 408 | |
5874583d HR |
409 | return applesmc_read_entry(entry, buffer, len); |
410 | } | |
411 | ||
412 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
413 | { | |
414 | const struct applesmc_entry *entry; | |
415 | ||
416 | entry = applesmc_get_entry_by_key(key); | |
417 | if (IS_ERR(entry)) | |
418 | return PTR_ERR(entry); | |
419 | ||
420 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
421 | } |
422 | ||
40ef06f1 HR |
423 | static int applesmc_has_key(const char *key, bool *value) |
424 | { | |
425 | const struct applesmc_entry *entry; | |
426 | ||
427 | entry = applesmc_get_entry_by_key(key); | |
428 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
429 | return PTR_ERR(entry); | |
430 | ||
431 | *value = !IS_ERR(entry); | |
432 | return 0; | |
433 | } | |
434 | ||
6f2fad74 | 435 | /* |
5874583d | 436 | * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). |
6f2fad74 NB |
437 | */ |
438 | static int applesmc_read_motion_sensor(int index, s16* value) | |
439 | { | |
440 | u8 buffer[2]; | |
441 | int ret; | |
442 | ||
443 | switch (index) { | |
444 | case SENSOR_X: | |
445 | ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); | |
446 | break; | |
447 | case SENSOR_Y: | |
448 | ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); | |
449 | break; | |
450 | case SENSOR_Z: | |
451 | ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); | |
452 | break; | |
453 | default: | |
454 | ret = -EINVAL; | |
455 | } | |
456 | ||
457 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
458 | ||
459 | return ret; | |
460 | } | |
461 | ||
462 | /* | |
2344cd0c | 463 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 464 | */ |
2344cd0c | 465 | static void applesmc_device_init(void) |
6f2fad74 | 466 | { |
2344cd0c | 467 | int total; |
6f2fad74 NB |
468 | u8 buffer[2]; |
469 | ||
40ef06f1 | 470 | if (!smcreg.has_accelerometer) |
2344cd0c | 471 | return; |
6f2fad74 | 472 | |
6f2fad74 | 473 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 474 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 475 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 476 | return; |
6f2fad74 NB |
477 | buffer[0] = 0xe0; |
478 | buffer[1] = 0x00; | |
479 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
480 | msleep(INIT_WAIT_MSECS); | |
481 | } | |
482 | ||
1ee7c71b | 483 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
484 | } |
485 | ||
486 | /* | |
5874583d | 487 | * applesmc_get_fan_count - get the number of fans. |
6f2fad74 NB |
488 | */ |
489 | static int applesmc_get_fan_count(void) | |
490 | { | |
491 | int ret; | |
492 | u8 buffer[1]; | |
493 | ||
6f2fad74 NB |
494 | ret = applesmc_read_key(FANS_COUNT, buffer, 1); |
495 | ||
6f2fad74 NB |
496 | if (ret) |
497 | return ret; | |
498 | else | |
499 | return buffer[0]; | |
500 | } | |
501 | ||
5874583d HR |
502 | /* |
503 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
504 | */ | |
505 | static int applesmc_init_smcreg_try(void) | |
506 | { | |
507 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 508 | bool left_light_sensor, right_light_sensor; |
5874583d HR |
509 | int ret; |
510 | ||
511 | if (s->init_complete) | |
512 | return 0; | |
513 | ||
514 | ret = read_register_count(&s->key_count); | |
515 | if (ret) | |
516 | return ret; | |
517 | ||
518 | if (!s->cache) | |
519 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
520 | if (!s->cache) | |
521 | return -ENOMEM; | |
522 | ||
9792dadf HR |
523 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
524 | if (ret) | |
525 | return ret; | |
526 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
527 | if (ret) | |
528 | return ret; | |
529 | s->temp_count = s->temp_end - s->temp_begin; | |
530 | ||
40ef06f1 HR |
531 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
532 | if (ret) | |
533 | return ret; | |
534 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
535 | if (ret) | |
536 | return ret; | |
537 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
538 | if (ret) | |
539 | return ret; | |
540 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
541 | if (ret) | |
542 | return ret; | |
543 | ||
544 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
545 | s->init_complete = true; |
546 | ||
40ef06f1 HR |
547 | pr_info("key=%d temp=%d acc=%d lux=%d kbd=%d\n", |
548 | s->key_count, s->temp_count, | |
549 | s->has_accelerometer, | |
550 | s->num_light_sensors, | |
551 | s->has_key_backlight); | |
5874583d HR |
552 | |
553 | return 0; | |
554 | } | |
555 | ||
556 | /* | |
557 | * applesmc_init_smcreg - Initialize register cache. | |
558 | * | |
559 | * Retries until initialization is successful, or the operation times out. | |
560 | * | |
561 | */ | |
562 | static int applesmc_init_smcreg(void) | |
563 | { | |
564 | int ms, ret; | |
565 | ||
566 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
567 | ret = applesmc_init_smcreg_try(); | |
568 | if (!ret) { | |
569 | if (ms) | |
570 | pr_info("init_smcreg() took %d ms\n", ms); | |
571 | return 0; | |
572 | } | |
573 | msleep(INIT_WAIT_MSECS); | |
574 | } | |
575 | ||
576 | kfree(smcreg.cache); | |
577 | smcreg.cache = NULL; | |
578 | ||
579 | return ret; | |
580 | } | |
581 | ||
582 | static void applesmc_destroy_smcreg(void) | |
583 | { | |
584 | kfree(smcreg.cache); | |
585 | smcreg.cache = NULL; | |
586 | smcreg.init_complete = false; | |
587 | } | |
588 | ||
6f2fad74 NB |
589 | /* Device model stuff */ |
590 | static int applesmc_probe(struct platform_device *dev) | |
591 | { | |
5874583d HR |
592 | int ret; |
593 | ||
594 | ret = applesmc_init_smcreg(); | |
595 | if (ret) | |
596 | return ret; | |
597 | ||
2344cd0c | 598 | applesmc_device_init(); |
6f2fad74 | 599 | |
6f2fad74 NB |
600 | return 0; |
601 | } | |
602 | ||
a976f150 HR |
603 | /* Synchronize device with memorized backlight state */ |
604 | static int applesmc_pm_resume(struct device *dev) | |
605 | { | |
40ef06f1 | 606 | if (smcreg.has_key_backlight) |
a976f150 | 607 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
608 | return 0; |
609 | } | |
610 | ||
611 | /* Reinitialize device on resume from hibernation */ | |
612 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 613 | { |
2344cd0c | 614 | applesmc_device_init(); |
a976f150 | 615 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
616 | } |
617 | ||
47145210 | 618 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
619 | .resume = applesmc_pm_resume, |
620 | .restore = applesmc_pm_restore, | |
621 | }; | |
622 | ||
6f2fad74 NB |
623 | static struct platform_driver applesmc_driver = { |
624 | .probe = applesmc_probe, | |
6f2fad74 NB |
625 | .driver = { |
626 | .name = "applesmc", | |
627 | .owner = THIS_MODULE, | |
a976f150 | 628 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
629 | }, |
630 | }; | |
631 | ||
632 | /* | |
633 | * applesmc_calibrate - Set our "resting" values. Callers must | |
634 | * hold applesmc_lock. | |
635 | */ | |
636 | static void applesmc_calibrate(void) | |
637 | { | |
638 | applesmc_read_motion_sensor(SENSOR_X, &rest_x); | |
639 | applesmc_read_motion_sensor(SENSOR_Y, &rest_y); | |
640 | rest_x = -rest_x; | |
641 | } | |
642 | ||
d5cf2b99 | 643 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 644 | { |
d5cf2b99 | 645 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
646 | s16 x, y; |
647 | ||
6f2fad74 | 648 | if (applesmc_read_motion_sensor(SENSOR_X, &x)) |
5874583d | 649 | return; |
6f2fad74 | 650 | if (applesmc_read_motion_sensor(SENSOR_Y, &y)) |
5874583d | 651 | return; |
6f2fad74 NB |
652 | |
653 | x = -x; | |
d5cf2b99 DT |
654 | input_report_abs(idev, ABS_X, x - rest_x); |
655 | input_report_abs(idev, ABS_Y, y - rest_y); | |
656 | input_sync(idev); | |
6f2fad74 NB |
657 | } |
658 | ||
659 | /* Sysfs Files */ | |
660 | ||
fa74419b NB |
661 | static ssize_t applesmc_name_show(struct device *dev, |
662 | struct device_attribute *attr, char *buf) | |
663 | { | |
664 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
665 | } | |
666 | ||
6f2fad74 NB |
667 | static ssize_t applesmc_position_show(struct device *dev, |
668 | struct device_attribute *attr, char *buf) | |
669 | { | |
670 | int ret; | |
671 | s16 x, y, z; | |
672 | ||
6f2fad74 NB |
673 | ret = applesmc_read_motion_sensor(SENSOR_X, &x); |
674 | if (ret) | |
675 | goto out; | |
676 | ret = applesmc_read_motion_sensor(SENSOR_Y, &y); | |
677 | if (ret) | |
678 | goto out; | |
679 | ret = applesmc_read_motion_sensor(SENSOR_Z, &z); | |
680 | if (ret) | |
681 | goto out; | |
682 | ||
683 | out: | |
6f2fad74 NB |
684 | if (ret) |
685 | return ret; | |
686 | else | |
687 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
688 | } | |
689 | ||
690 | static ssize_t applesmc_light_show(struct device *dev, | |
691 | struct device_attribute *attr, char *sysfsbuf) | |
692 | { | |
5874583d | 693 | const struct applesmc_entry *entry; |
8bd1a12a | 694 | static int data_length; |
6f2fad74 NB |
695 | int ret; |
696 | u8 left = 0, right = 0; | |
5874583d | 697 | u8 buffer[10]; |
6f2fad74 | 698 | |
8bd1a12a | 699 | if (!data_length) { |
5874583d HR |
700 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
701 | if (IS_ERR(entry)) | |
702 | return PTR_ERR(entry); | |
703 | if (entry->len > 10) | |
704 | return -ENXIO; | |
705 | data_length = entry->len; | |
1ee7c71b | 706 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
707 | } |
708 | ||
709 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
710 | /* newer macbooks report a single 10-bit bigendian value */ |
711 | if (data_length == 10) { | |
712 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
713 | goto out; | |
714 | } | |
6f2fad74 NB |
715 | left = buffer[2]; |
716 | if (ret) | |
717 | goto out; | |
8bd1a12a | 718 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
719 | right = buffer[2]; |
720 | ||
721 | out: | |
6f2fad74 NB |
722 | if (ret) |
723 | return ret; | |
724 | else | |
725 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
726 | } | |
727 | ||
fa5575cf AM |
728 | /* Displays sensor key as label */ |
729 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
730 | struct device_attribute *devattr, char *sysfsbuf) | |
731 | { | |
9792dadf HR |
732 | int index = smcreg.temp_begin + to_index(devattr); |
733 | const struct applesmc_entry *entry; | |
fa5575cf | 734 | |
9792dadf HR |
735 | entry = applesmc_get_entry_by_index(index); |
736 | if (IS_ERR(entry)) | |
737 | return PTR_ERR(entry); | |
738 | ||
739 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); | |
fa5575cf AM |
740 | } |
741 | ||
6f2fad74 NB |
742 | /* Displays degree Celsius * 1000 */ |
743 | static ssize_t applesmc_show_temperature(struct device *dev, | |
744 | struct device_attribute *devattr, char *sysfsbuf) | |
745 | { | |
9792dadf HR |
746 | int index = smcreg.temp_begin + to_index(devattr); |
747 | const struct applesmc_entry *entry; | |
6f2fad74 NB |
748 | int ret; |
749 | u8 buffer[2]; | |
750 | unsigned int temp; | |
6f2fad74 | 751 | |
9792dadf HR |
752 | entry = applesmc_get_entry_by_index(index); |
753 | if (IS_ERR(entry)) | |
754 | return PTR_ERR(entry); | |
dcdea261 HR |
755 | if (entry->len > 2) |
756 | return -EINVAL; | |
6f2fad74 | 757 | |
dcdea261 | 758 | ret = applesmc_read_entry(entry, buffer, entry->len); |
6f2fad74 NB |
759 | if (ret) |
760 | return ret; | |
9792dadf | 761 | |
dcdea261 HR |
762 | if (entry->len == 2) { |
763 | temp = buffer[0] * 1000; | |
764 | temp += (buffer[1] >> 6) * 250; | |
765 | } else { | |
766 | temp = buffer[0] * 4000; | |
767 | } | |
9792dadf HR |
768 | |
769 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); | |
6f2fad74 NB |
770 | } |
771 | ||
772 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
773 | struct device_attribute *attr, char *sysfsbuf) | |
774 | { | |
775 | int ret; | |
776 | unsigned int speed = 0; | |
777 | char newkey[5]; | |
778 | u8 buffer[2]; | |
779 | struct sensor_device_attribute_2 *sensor_attr = | |
780 | to_sensor_dev_attr_2(attr); | |
781 | ||
782 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
783 | newkey[1] = '0' + sensor_attr->index; | |
784 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
785 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
786 | newkey[4] = 0; | |
787 | ||
6f2fad74 NB |
788 | ret = applesmc_read_key(newkey, buffer, 2); |
789 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
790 | ||
6f2fad74 NB |
791 | if (ret) |
792 | return ret; | |
793 | else | |
794 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
795 | } | |
796 | ||
797 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
798 | struct device_attribute *attr, | |
799 | const char *sysfsbuf, size_t count) | |
800 | { | |
801 | int ret; | |
802 | u32 speed; | |
803 | char newkey[5]; | |
804 | u8 buffer[2]; | |
805 | struct sensor_device_attribute_2 *sensor_attr = | |
806 | to_sensor_dev_attr_2(attr); | |
807 | ||
808 | speed = simple_strtoul(sysfsbuf, NULL, 10); | |
809 | ||
810 | if (speed > 0x4000) /* Bigger than a 14-bit value */ | |
811 | return -EINVAL; | |
812 | ||
813 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
814 | newkey[1] = '0' + sensor_attr->index; | |
815 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
816 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
817 | newkey[4] = 0; | |
818 | ||
6f2fad74 NB |
819 | buffer[0] = (speed >> 6) & 0xff; |
820 | buffer[1] = (speed << 2) & 0xff; | |
821 | ret = applesmc_write_key(newkey, buffer, 2); | |
822 | ||
6f2fad74 NB |
823 | if (ret) |
824 | return ret; | |
825 | else | |
826 | return count; | |
827 | } | |
828 | ||
829 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
830 | struct device_attribute *devattr, char *sysfsbuf) | |
831 | { | |
832 | int ret; | |
833 | u16 manual = 0; | |
834 | u8 buffer[2]; | |
835 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
836 | ||
6f2fad74 NB |
837 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
838 | manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01; | |
839 | ||
6f2fad74 NB |
840 | if (ret) |
841 | return ret; | |
842 | else | |
843 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
844 | } | |
845 | ||
846 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
847 | struct device_attribute *devattr, | |
848 | const char *sysfsbuf, size_t count) | |
849 | { | |
850 | int ret; | |
851 | u8 buffer[2]; | |
852 | u32 input; | |
853 | u16 val; | |
854 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
855 | ||
856 | input = simple_strtoul(sysfsbuf, NULL, 10); | |
857 | ||
6f2fad74 NB |
858 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
859 | val = (buffer[0] << 8 | buffer[1]); | |
860 | if (ret) | |
861 | goto out; | |
862 | ||
863 | if (input) | |
864 | val = val | (0x01 << attr->index); | |
865 | else | |
866 | val = val & ~(0x01 << attr->index); | |
867 | ||
868 | buffer[0] = (val >> 8) & 0xFF; | |
869 | buffer[1] = val & 0xFF; | |
870 | ||
871 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
872 | ||
873 | out: | |
6f2fad74 NB |
874 | if (ret) |
875 | return ret; | |
876 | else | |
877 | return count; | |
878 | } | |
879 | ||
880 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
881 | struct device_attribute *attr, char *sysfsbuf) | |
882 | { | |
883 | int ret; | |
884 | char newkey[5]; | |
885 | u8 buffer[17]; | |
886 | struct sensor_device_attribute_2 *sensor_attr = | |
887 | to_sensor_dev_attr_2(attr); | |
888 | ||
889 | newkey[0] = FAN_POSITION[0]; | |
890 | newkey[1] = '0' + sensor_attr->index; | |
891 | newkey[2] = FAN_POSITION[2]; | |
892 | newkey[3] = FAN_POSITION[3]; | |
893 | newkey[4] = 0; | |
894 | ||
6f2fad74 NB |
895 | ret = applesmc_read_key(newkey, buffer, 16); |
896 | buffer[16] = 0; | |
897 | ||
6f2fad74 NB |
898 | if (ret) |
899 | return ret; | |
900 | else | |
901 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
902 | } | |
903 | ||
904 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
905 | struct device_attribute *attr, char *sysfsbuf) | |
906 | { | |
907 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
908 | } | |
909 | ||
910 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
911 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
912 | { | |
6f2fad74 | 913 | applesmc_calibrate(); |
6f2fad74 NB |
914 | |
915 | return count; | |
916 | } | |
917 | ||
6f2fad74 NB |
918 | static void applesmc_backlight_set(struct work_struct *work) |
919 | { | |
a976f150 | 920 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
921 | } |
922 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
923 | ||
924 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
925 | enum led_brightness value) | |
926 | { | |
927 | int ret; | |
928 | ||
a976f150 | 929 | backlight_state[0] = value; |
6f2fad74 NB |
930 | ret = queue_work(applesmc_led_wq, &backlight_work); |
931 | ||
932 | if (debug && (!ret)) | |
933 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
934 | } | |
935 | ||
936 | static ssize_t applesmc_key_count_show(struct device *dev, | |
937 | struct device_attribute *attr, char *sysfsbuf) | |
938 | { | |
939 | int ret; | |
940 | u8 buffer[4]; | |
941 | u32 count; | |
942 | ||
6f2fad74 NB |
943 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
944 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
945 | ((u32)buffer[2]<<8) + buffer[3]; | |
946 | ||
6f2fad74 NB |
947 | if (ret) |
948 | return ret; | |
949 | else | |
950 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
951 | } | |
952 | ||
953 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
954 | struct device_attribute *attr, char *sysfsbuf) | |
955 | { | |
5874583d | 956 | const struct applesmc_entry *entry; |
6f2fad74 NB |
957 | int ret; |
958 | ||
5874583d HR |
959 | entry = applesmc_get_entry_by_index(key_at_index); |
960 | if (IS_ERR(entry)) | |
961 | return PTR_ERR(entry); | |
962 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
963 | if (ret) | |
6f2fad74 | 964 | return ret; |
6f2fad74 | 965 | |
5874583d | 966 | return entry->len; |
6f2fad74 NB |
967 | } |
968 | ||
969 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
970 | struct device_attribute *attr, char *sysfsbuf) | |
971 | { | |
5874583d | 972 | const struct applesmc_entry *entry; |
6f2fad74 | 973 | |
5874583d HR |
974 | entry = applesmc_get_entry_by_index(key_at_index); |
975 | if (IS_ERR(entry)) | |
976 | return PTR_ERR(entry); | |
6f2fad74 | 977 | |
5874583d | 978 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
979 | } |
980 | ||
981 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
982 | struct device_attribute *attr, char *sysfsbuf) | |
983 | { | |
5874583d | 984 | const struct applesmc_entry *entry; |
6f2fad74 | 985 | |
5874583d HR |
986 | entry = applesmc_get_entry_by_index(key_at_index); |
987 | if (IS_ERR(entry)) | |
988 | return PTR_ERR(entry); | |
6f2fad74 | 989 | |
5874583d | 990 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
991 | } |
992 | ||
993 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
994 | struct device_attribute *attr, char *sysfsbuf) | |
995 | { | |
5874583d | 996 | const struct applesmc_entry *entry; |
6f2fad74 | 997 | |
5874583d HR |
998 | entry = applesmc_get_entry_by_index(key_at_index); |
999 | if (IS_ERR(entry)) | |
1000 | return PTR_ERR(entry); | |
6f2fad74 | 1001 | |
5874583d | 1002 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
1003 | } |
1004 | ||
1005 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
1006 | struct device_attribute *attr, char *sysfsbuf) | |
1007 | { | |
1008 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
1009 | } | |
1010 | ||
1011 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
1012 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
1013 | { | |
5874583d | 1014 | unsigned long newkey; |
6f2fad74 | 1015 | |
5874583d HR |
1016 | if (strict_strtoul(sysfsbuf, 10, &newkey) < 0 |
1017 | || newkey >= smcreg.key_count) | |
1018 | return -EINVAL; | |
6f2fad74 | 1019 | |
5874583d | 1020 | key_at_index = newkey; |
6f2fad74 NB |
1021 | return count; |
1022 | } | |
1023 | ||
1024 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 1025 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
1026 | .default_trigger = "nand-disk", |
1027 | .brightness_set = applesmc_brightness_set, | |
1028 | }; | |
1029 | ||
fa74419b NB |
1030 | static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL); |
1031 | ||
6f2fad74 NB |
1032 | static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL); |
1033 | static DEVICE_ATTR(calibrate, 0644, | |
1034 | applesmc_calibrate_show, applesmc_calibrate_store); | |
1035 | ||
1036 | static struct attribute *accelerometer_attributes[] = { | |
1037 | &dev_attr_position.attr, | |
1038 | &dev_attr_calibrate.attr, | |
1039 | NULL | |
1040 | }; | |
1041 | ||
1042 | static const struct attribute_group accelerometer_attributes_group = | |
1043 | { .attrs = accelerometer_attributes }; | |
1044 | ||
1045 | static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL); | |
1046 | ||
1047 | static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL); | |
1048 | static DEVICE_ATTR(key_at_index, 0644, | |
1049 | applesmc_key_at_index_show, applesmc_key_at_index_store); | |
1050 | static DEVICE_ATTR(key_at_index_name, 0444, | |
1051 | applesmc_key_at_index_name_show, NULL); | |
1052 | static DEVICE_ATTR(key_at_index_type, 0444, | |
1053 | applesmc_key_at_index_type_show, NULL); | |
1054 | static DEVICE_ATTR(key_at_index_data_length, 0444, | |
1055 | applesmc_key_at_index_data_length_show, NULL); | |
1056 | static DEVICE_ATTR(key_at_index_data, 0444, | |
1057 | applesmc_key_at_index_read_show, NULL); | |
1058 | ||
1059 | static struct attribute *key_enumeration_attributes[] = { | |
1060 | &dev_attr_key_count.attr, | |
1061 | &dev_attr_key_at_index.attr, | |
1062 | &dev_attr_key_at_index_name.attr, | |
1063 | &dev_attr_key_at_index_type.attr, | |
1064 | &dev_attr_key_at_index_data_length.attr, | |
1065 | &dev_attr_key_at_index_data.attr, | |
1066 | NULL | |
1067 | }; | |
1068 | ||
1069 | static const struct attribute_group key_enumeration_group = | |
1070 | { .attrs = key_enumeration_attributes }; | |
1071 | ||
1072 | /* | |
1073 | * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries. | |
1074 | * - show actual speed | |
1075 | * - show/store minimum speed | |
1076 | * - show maximum speed | |
1077 | * - show safe speed | |
1078 | * - show/store target speed | |
1079 | * - show/store manual mode | |
1080 | */ | |
1081 | #define sysfs_fan_speeds_offset(offset) \ | |
1082 | static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \ | |
1083 | applesmc_show_fan_speed, NULL, 0, offset-1); \ | |
1084 | \ | |
1085 | static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
1086 | applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \ | |
1087 | \ | |
1088 | static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \ | |
1089 | applesmc_show_fan_speed, NULL, 2, offset-1); \ | |
1090 | \ | |
1091 | static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \ | |
1092 | applesmc_show_fan_speed, NULL, 3, offset-1); \ | |
1093 | \ | |
1094 | static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \ | |
1095 | applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \ | |
1096 | \ | |
1097 | static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \ | |
1098 | applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \ | |
1099 | \ | |
da4e8ca3 | 1100 | static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \ |
6f2fad74 NB |
1101 | applesmc_show_fan_position, NULL, offset-1); \ |
1102 | \ | |
1103 | static struct attribute *fan##offset##_attributes[] = { \ | |
1104 | &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \ | |
1105 | &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \ | |
1106 | &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \ | |
1107 | &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \ | |
1108 | &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \ | |
1109 | &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \ | |
da4e8ca3 | 1110 | &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \ |
6f2fad74 NB |
1111 | NULL \ |
1112 | }; | |
1113 | ||
1114 | /* | |
1115 | * Create the needed functions for each fan using the macro defined above | |
8de57709 | 1116 | * (4 fans are supported) |
6f2fad74 NB |
1117 | */ |
1118 | sysfs_fan_speeds_offset(1); | |
1119 | sysfs_fan_speeds_offset(2); | |
8de57709 RR |
1120 | sysfs_fan_speeds_offset(3); |
1121 | sysfs_fan_speeds_offset(4); | |
6f2fad74 NB |
1122 | |
1123 | static const struct attribute_group fan_attribute_groups[] = { | |
1124 | { .attrs = fan1_attributes }, | |
8de57709 RR |
1125 | { .attrs = fan2_attributes }, |
1126 | { .attrs = fan3_attributes }, | |
1127 | { .attrs = fan4_attributes }, | |
6f2fad74 NB |
1128 | }; |
1129 | ||
9792dadf HR |
1130 | static struct applesmc_node_group temp_group[] = { |
1131 | { "temp%d_label", applesmc_show_sensor_label }, | |
1132 | { "temp%d_input", applesmc_show_temperature }, | |
1133 | { } | |
fa5575cf AM |
1134 | }; |
1135 | ||
6f2fad74 NB |
1136 | /* Module stuff */ |
1137 | ||
9792dadf HR |
1138 | /* |
1139 | * applesmc_destroy_nodes - remove files and free associated memory | |
1140 | */ | |
1141 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1142 | { | |
1143 | struct applesmc_node_group *grp; | |
1144 | struct applesmc_dev_attr *node; | |
1145 | ||
1146 | for (grp = groups; grp->nodes; grp++) { | |
1147 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1148 | sysfs_remove_file(&pdev->dev.kobj, | |
1149 | &node->sda.dev_attr.attr); | |
1150 | kfree(grp->nodes); | |
1151 | grp->nodes = NULL; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1157 | */ | |
1158 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1159 | { | |
1160 | struct applesmc_node_group *grp; | |
1161 | struct applesmc_dev_attr *node; | |
1162 | struct attribute *attr; | |
1163 | int ret, i; | |
1164 | ||
1165 | for (grp = groups; grp->format; grp++) { | |
1166 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1167 | if (!grp->nodes) { | |
1168 | ret = -ENOMEM; | |
1169 | goto out; | |
1170 | } | |
1171 | for (i = 0; i < num; i++) { | |
1172 | node = &grp->nodes[i]; | |
1173 | sprintf(node->name, grp->format, i + 1); | |
1174 | node->sda.index = i; | |
1175 | node->sda.dev_attr.show = grp->show; | |
1176 | node->sda.dev_attr.store = grp->store; | |
1177 | attr = &node->sda.dev_attr.attr; | |
1178 | attr->name = node->name; | |
1179 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1180 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1181 | if (ret) { | |
1182 | attr->name = NULL; | |
1183 | goto out; | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | out: | |
1190 | applesmc_destroy_nodes(groups); | |
1191 | return ret; | |
1192 | } | |
1193 | ||
6f2fad74 NB |
1194 | /* Create accelerometer ressources */ |
1195 | static int applesmc_create_accelerometer(void) | |
1196 | { | |
d5cf2b99 | 1197 | struct input_dev *idev; |
6f2fad74 NB |
1198 | int ret; |
1199 | ||
1200 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1201 | &accelerometer_attributes_group); | |
1202 | if (ret) | |
1203 | goto out; | |
1204 | ||
d5cf2b99 | 1205 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1206 | if (!applesmc_idev) { |
1207 | ret = -ENOMEM; | |
1208 | goto out_sysfs; | |
1209 | } | |
1210 | ||
d5cf2b99 DT |
1211 | applesmc_idev->poll = applesmc_idev_poll; |
1212 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1213 | ||
6f2fad74 NB |
1214 | /* initial calibrate for the input device */ |
1215 | applesmc_calibrate(); | |
1216 | ||
d5cf2b99 DT |
1217 | /* initialize the input device */ |
1218 | idev = applesmc_idev->input; | |
1219 | idev->name = "applesmc"; | |
1220 | idev->id.bustype = BUS_HOST; | |
1221 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1222 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1223 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1224 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1225 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1226 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1227 | ||
d5cf2b99 | 1228 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1229 | if (ret) |
1230 | goto out_idev; | |
1231 | ||
6f2fad74 NB |
1232 | return 0; |
1233 | ||
1234 | out_idev: | |
d5cf2b99 | 1235 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1236 | |
1237 | out_sysfs: | |
1238 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); | |
1239 | ||
1240 | out: | |
1ee7c71b | 1241 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1242 | return ret; |
1243 | } | |
1244 | ||
1245 | /* Release all ressources used by the accelerometer */ | |
1246 | static void applesmc_release_accelerometer(void) | |
1247 | { | |
d5cf2b99 DT |
1248 | input_unregister_polled_device(applesmc_idev); |
1249 | input_free_polled_device(applesmc_idev); | |
6f2fad74 NB |
1250 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); |
1251 | } | |
40ef06f1 HR |
1252 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1253 | { | |
1254 | return 1; | |
1255 | } | |
6f2fad74 NB |
1256 | |
1257 | /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1258 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ | |
1259 | static __initdata struct dmi_system_id applesmc_whitelist[] = { | |
f5274c97 HR |
1260 | { applesmc_dmi_match, "Apple MacBook Air", { |
1261 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1262 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1263 | }, |
6f2fad74 NB |
1264 | { applesmc_dmi_match, "Apple MacBook Pro", { |
1265 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1266 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, | |
40ef06f1 | 1267 | }, |
cd19ba13 RO |
1268 | { applesmc_dmi_match, "Apple MacBook", { |
1269 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1270 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, | |
40ef06f1 | 1271 | }, |
6f2fad74 NB |
1272 | { applesmc_dmi_match, "Apple Macmini", { |
1273 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1274 | DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, | |
40ef06f1 | 1275 | }, |
45a3a36b HR |
1276 | { applesmc_dmi_match, "Apple MacPro", { |
1277 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1278 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1279 | }, |
9f86f28d RDI |
1280 | { applesmc_dmi_match, "Apple iMac", { |
1281 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1282 | DMI_MATCH(DMI_PRODUCT_NAME,"iMac") }, | |
40ef06f1 | 1283 | }, |
6f2fad74 NB |
1284 | { .ident = NULL } |
1285 | }; | |
1286 | ||
1287 | static int __init applesmc_init(void) | |
1288 | { | |
1289 | int ret; | |
1290 | int count; | |
6f2fad74 | 1291 | |
6f2fad74 | 1292 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1293 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1294 | ret = -ENODEV; |
1295 | goto out; | |
1296 | } | |
1297 | ||
1298 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1299 | "applesmc")) { | |
1300 | ret = -ENXIO; | |
1301 | goto out; | |
1302 | } | |
1303 | ||
1304 | ret = platform_driver_register(&applesmc_driver); | |
1305 | if (ret) | |
1306 | goto out_region; | |
1307 | ||
ddfbf2af JD |
1308 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1309 | NULL, 0); | |
6f2fad74 NB |
1310 | if (IS_ERR(pdev)) { |
1311 | ret = PTR_ERR(pdev); | |
1312 | goto out_driver; | |
1313 | } | |
1314 | ||
5874583d HR |
1315 | /* create register cache */ |
1316 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1317 | if (ret) |
1318 | goto out_device; | |
fa74419b | 1319 | |
5874583d HR |
1320 | ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr); |
1321 | if (ret) | |
1322 | goto out_smcreg; | |
1323 | ||
6f2fad74 NB |
1324 | /* Create key enumeration sysfs files */ |
1325 | ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group); | |
1326 | if (ret) | |
6996abf0 | 1327 | goto out_name; |
6f2fad74 NB |
1328 | |
1329 | /* create fan files */ | |
1330 | count = applesmc_get_fan_count(); | |
0559a538 | 1331 | if (count < 0) |
1ee7c71b | 1332 | pr_err("Cannot get the number of fans\n"); |
0559a538 | 1333 | else |
1ee7c71b | 1334 | pr_info("%d fans found\n", count); |
6f2fad74 | 1335 | |
0559a538 HR |
1336 | if (count > 4) { |
1337 | count = 4; | |
1ee7c71b | 1338 | pr_warn("A maximum of 4 fans are supported by this driver\n"); |
0559a538 HR |
1339 | } |
1340 | ||
1341 | while (fans_handled < count) { | |
1342 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1343 | &fan_attribute_groups[fans_handled]); | |
1344 | if (ret) | |
1345 | goto out_fans; | |
1346 | fans_handled++; | |
6f2fad74 NB |
1347 | } |
1348 | ||
9792dadf HR |
1349 | ret = applesmc_create_nodes(temp_group, smcreg.temp_count); |
1350 | if (ret) | |
1351 | goto out_fans; | |
6f2fad74 | 1352 | |
40ef06f1 | 1353 | if (smcreg.has_accelerometer) { |
6f2fad74 NB |
1354 | ret = applesmc_create_accelerometer(); |
1355 | if (ret) | |
1356 | goto out_temperature; | |
1357 | } | |
1358 | ||
40ef06f1 | 1359 | if (smcreg.num_light_sensors) { |
6f2fad74 NB |
1360 | /* Add light sensor file */ |
1361 | ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1362 | if (ret) | |
1363 | goto out_accelerometer; | |
40ef06f1 | 1364 | } |
6f2fad74 | 1365 | |
40ef06f1 | 1366 | if (smcreg.has_key_backlight) { |
6f2fad74 NB |
1367 | /* Create the workqueue */ |
1368 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1369 | if (!applesmc_led_wq) { | |
1370 | ret = -ENOMEM; | |
1371 | goto out_light_sysfs; | |
1372 | } | |
1373 | ||
1374 | /* register as a led device */ | |
1375 | ret = led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1376 | if (ret < 0) | |
1377 | goto out_light_wq; | |
1378 | } | |
1379 | ||
1beeffe4 TJ |
1380 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1381 | if (IS_ERR(hwmon_dev)) { | |
1382 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1383 | goto out_light_ledclass; |
1384 | } | |
1385 | ||
1ee7c71b | 1386 | pr_info("driver successfully loaded\n"); |
6f2fad74 NB |
1387 | |
1388 | return 0; | |
1389 | ||
1390 | out_light_ledclass: | |
40ef06f1 | 1391 | if (smcreg.has_key_backlight) |
6f2fad74 NB |
1392 | led_classdev_unregister(&applesmc_backlight); |
1393 | out_light_wq: | |
40ef06f1 | 1394 | if (smcreg.has_key_backlight) |
6f2fad74 NB |
1395 | destroy_workqueue(applesmc_led_wq); |
1396 | out_light_sysfs: | |
40ef06f1 | 1397 | if (smcreg.num_light_sensors) |
6f2fad74 NB |
1398 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); |
1399 | out_accelerometer: | |
40ef06f1 | 1400 | if (smcreg.has_accelerometer) |
6f2fad74 NB |
1401 | applesmc_release_accelerometer(); |
1402 | out_temperature: | |
9792dadf | 1403 | applesmc_destroy_nodes(temp_group); |
0559a538 HR |
1404 | out_fans: |
1405 | while (fans_handled) | |
1406 | sysfs_remove_group(&pdev->dev.kobj, | |
1407 | &fan_attribute_groups[--fans_handled]); | |
6f2fad74 | 1408 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); |
6996abf0 NB |
1409 | out_name: |
1410 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); | |
5874583d HR |
1411 | out_smcreg: |
1412 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1413 | out_device: |
1414 | platform_device_unregister(pdev); | |
1415 | out_driver: | |
1416 | platform_driver_unregister(&applesmc_driver); | |
1417 | out_region: | |
1418 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1419 | out: | |
1ee7c71b | 1420 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1421 | return ret; |
1422 | } | |
1423 | ||
1424 | static void __exit applesmc_exit(void) | |
1425 | { | |
1beeffe4 | 1426 | hwmon_device_unregister(hwmon_dev); |
40ef06f1 | 1427 | if (smcreg.has_key_backlight) { |
6f2fad74 NB |
1428 | led_classdev_unregister(&applesmc_backlight); |
1429 | destroy_workqueue(applesmc_led_wq); | |
6f2fad74 | 1430 | } |
40ef06f1 HR |
1431 | if (smcreg.num_light_sensors) |
1432 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1433 | if (smcreg.has_accelerometer) | |
6f2fad74 | 1434 | applesmc_release_accelerometer(); |
9792dadf | 1435 | applesmc_destroy_nodes(temp_group); |
0559a538 HR |
1436 | while (fans_handled) |
1437 | sysfs_remove_group(&pdev->dev.kobj, | |
1438 | &fan_attribute_groups[--fans_handled]); | |
6f2fad74 | 1439 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); |
6996abf0 | 1440 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); |
5874583d | 1441 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1442 | platform_device_unregister(pdev); |
1443 | platform_driver_unregister(&applesmc_driver); | |
1444 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1445 | ||
1ee7c71b | 1446 | pr_info("driver unloaded\n"); |
6f2fad74 NB |
1447 | } |
1448 | ||
1449 | module_init(applesmc_init); | |
1450 | module_exit(applesmc_exit); | |
1451 | ||
1452 | MODULE_AUTHOR("Nicolas Boichat"); | |
1453 | MODULE_DESCRIPTION("Apple SMC"); | |
1454 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1455 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |