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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> | |
41e71f97 | 7 | * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se> |
6f2fad74 NB |
8 | * |
9 | * Based on hdaps.c driver: | |
10 | * Copyright (C) 2005 Robert Love <rml@novell.com> | |
11 | * Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com> | |
12 | * | |
13 | * Fan control based on smcFanControl: | |
14 | * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com> | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify it | |
17 | * under the terms of the GNU General Public License v2 as published by the | |
18 | * Free Software Foundation. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
21 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
22 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
23 | * more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License along with | |
26 | * this program; if not, write to the Free Software Foundation, Inc., | |
27 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | |
28 | */ | |
29 | ||
1ee7c71b JP |
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | ||
6f2fad74 NB |
32 | #include <linux/delay.h> |
33 | #include <linux/platform_device.h> | |
d5cf2b99 | 34 | #include <linux/input-polldev.h> |
6f2fad74 | 35 | #include <linux/kernel.h> |
5874583d | 36 | #include <linux/slab.h> |
6f2fad74 NB |
37 | #include <linux/module.h> |
38 | #include <linux/timer.h> | |
39 | #include <linux/dmi.h> | |
40 | #include <linux/mutex.h> | |
41 | #include <linux/hwmon-sysfs.h> | |
6055fae8 | 42 | #include <linux/io.h> |
6f2fad74 NB |
43 | #include <linux/leds.h> |
44 | #include <linux/hwmon.h> | |
45 | #include <linux/workqueue.h> | |
46 | ||
47 | /* data port used by Apple SMC */ | |
48 | #define APPLESMC_DATA_PORT 0x300 | |
49 | /* command/status port used by Apple SMC */ | |
50 | #define APPLESMC_CMD_PORT 0x304 | |
51 | ||
52 | #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ | |
53 | ||
54 | #define APPLESMC_MAX_DATA_LENGTH 32 | |
55 | ||
5874583d | 56 | /* wait up to 32 ms for a status change. */ |
8c9398d1 HR |
57 | #define APPLESMC_MIN_WAIT 0x0040 |
58 | #define APPLESMC_MAX_WAIT 0x8000 | |
59 | ||
6f2fad74 NB |
60 | #define APPLESMC_STATUS_MASK 0x0f |
61 | #define APPLESMC_READ_CMD 0x10 | |
62 | #define APPLESMC_WRITE_CMD 0x11 | |
63 | #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 | |
64 | #define APPLESMC_GET_KEY_TYPE_CMD 0x13 | |
65 | ||
66 | #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */ | |
67 | ||
8bd1a12a HR |
68 | #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */ |
69 | #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */ | |
d5cf2b99 | 70 | #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */ |
6f2fad74 | 71 | |
d5cf2b99 | 72 | #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */ |
6f2fad74 NB |
73 | |
74 | #define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */ | |
75 | #define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */ | |
76 | #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */ | |
77 | #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */ | |
78 | ||
79 | #define FANS_COUNT "FNum" /* r-o ui8 */ | |
80 | #define FANS_MANUAL "FS! " /* r-w ui16 */ | |
3eba2bf7 | 81 | #define FAN_ID_FMT "F%dID" /* r-o char[16] */ |
6f2fad74 | 82 | |
6f2fad74 | 83 | /* List of keys used to read/write fan speeds */ |
3eba2bf7 HR |
84 | static const char *const fan_speed_fmt[] = { |
85 | "F%dAc", /* actual speed */ | |
86 | "F%dMn", /* minimum speed (rw) */ | |
87 | "F%dMx", /* maximum speed */ | |
88 | "F%dSf", /* safe speed - not all models */ | |
89 | "F%dTg", /* target speed (manual: rw) */ | |
6f2fad74 NB |
90 | }; |
91 | ||
92 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
93 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
94 | ||
d5cf2b99 | 95 | #define APPLESMC_POLL_INTERVAL 50 /* msecs */ |
6f2fad74 NB |
96 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ |
97 | #define APPLESMC_INPUT_FLAT 4 | |
98 | ||
99 | #define SENSOR_X 0 | |
100 | #define SENSOR_Y 1 | |
101 | #define SENSOR_Z 2 | |
102 | ||
3eba2bf7 HR |
103 | #define to_index(attr) (to_sensor_dev_attr(attr)->index & 0xffff) |
104 | #define to_option(attr) (to_sensor_dev_attr(attr)->index >> 16) | |
9792dadf | 105 | |
9792dadf HR |
106 | /* Dynamic device node attributes */ |
107 | struct applesmc_dev_attr { | |
108 | struct sensor_device_attribute sda; /* hwmon attributes */ | |
109 | char name[32]; /* room for node file name */ | |
110 | }; | |
111 | ||
112 | /* Dynamic device node group */ | |
113 | struct applesmc_node_group { | |
114 | char *format; /* format string */ | |
115 | void *show; /* show function */ | |
116 | void *store; /* store function */ | |
3eba2bf7 | 117 | int option; /* function argument */ |
9792dadf HR |
118 | struct applesmc_dev_attr *nodes; /* dynamic node array */ |
119 | }; | |
120 | ||
5874583d HR |
121 | /* AppleSMC entry - cached register information */ |
122 | struct applesmc_entry { | |
123 | char key[5]; /* four-letter key code */ | |
124 | u8 valid; /* set when entry is successfully read once */ | |
125 | u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */ | |
126 | char type[5]; /* four-letter type code */ | |
127 | u8 flags; /* 0x10: func; 0x40: write; 0x80: read */ | |
128 | }; | |
129 | ||
130 | /* Register lookup and registers common to all SMCs */ | |
131 | static struct applesmc_registers { | |
132 | struct mutex mutex; /* register read/write mutex */ | |
133 | unsigned int key_count; /* number of SMC registers */ | |
3eba2bf7 | 134 | unsigned int fan_count; /* number of fans */ |
9792dadf HR |
135 | unsigned int temp_count; /* number of temperature registers */ |
136 | unsigned int temp_begin; /* temperature lower index bound */ | |
137 | unsigned int temp_end; /* temperature upper index bound */ | |
40ef06f1 HR |
138 | int num_light_sensors; /* number of light sensors */ |
139 | bool has_accelerometer; /* has motion sensor */ | |
140 | bool has_key_backlight; /* has keyboard backlight */ | |
5874583d HR |
141 | bool init_complete; /* true when fully initialized */ |
142 | struct applesmc_entry *cache; /* cached key entries */ | |
143 | } smcreg = { | |
144 | .mutex = __MUTEX_INITIALIZER(smcreg.mutex), | |
145 | }; | |
146 | ||
6f2fad74 NB |
147 | static const int debug; |
148 | static struct platform_device *pdev; | |
149 | static s16 rest_x; | |
150 | static s16 rest_y; | |
a976f150 HR |
151 | static u8 backlight_state[2]; |
152 | ||
1beeffe4 | 153 | static struct device *hwmon_dev; |
d5cf2b99 | 154 | static struct input_polled_dev *applesmc_idev; |
6f2fad74 | 155 | |
6f2fad74 NB |
156 | /* |
157 | * Last index written to key_at_index sysfs file, and value to use for all other | |
158 | * key_at_index_* sysfs files. | |
159 | */ | |
160 | static unsigned int key_at_index; | |
161 | ||
162 | static struct workqueue_struct *applesmc_led_wq; | |
163 | ||
164 | /* | |
8c9398d1 | 165 | * __wait_status - Wait up to 32ms for the status port to get a certain value |
6f2fad74 NB |
166 | * (masked with 0x0f), returning zero if the value is obtained. Callers must |
167 | * hold applesmc_lock. | |
168 | */ | |
169 | static int __wait_status(u8 val) | |
170 | { | |
8c9398d1 | 171 | int us; |
6f2fad74 NB |
172 | |
173 | val = val & APPLESMC_STATUS_MASK; | |
174 | ||
8c9398d1 HR |
175 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
176 | udelay(us); | |
6f2fad74 | 177 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { |
6f2fad74 NB |
178 | return 0; |
179 | } | |
6f2fad74 NB |
180 | } |
181 | ||
6f2fad74 NB |
182 | return -EIO; |
183 | } | |
184 | ||
84d2d7f2 HR |
185 | /* |
186 | * special treatment of command port - on newer macbooks, it seems necessary | |
187 | * to resend the command byte before polling the status again. Callers must | |
188 | * hold applesmc_lock. | |
189 | */ | |
190 | static int send_command(u8 cmd) | |
191 | { | |
8c9398d1 HR |
192 | int us; |
193 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { | |
84d2d7f2 | 194 | outb(cmd, APPLESMC_CMD_PORT); |
8c9398d1 | 195 | udelay(us); |
84d2d7f2 HR |
196 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c) |
197 | return 0; | |
84d2d7f2 | 198 | } |
84d2d7f2 HR |
199 | return -EIO; |
200 | } | |
201 | ||
5874583d | 202 | static int send_argument(const char *key) |
6f2fad74 NB |
203 | { |
204 | int i; | |
205 | ||
6f2fad74 NB |
206 | for (i = 0; i < 4; i++) { |
207 | outb(key[i], APPLESMC_DATA_PORT); | |
208 | if (__wait_status(0x04)) | |
209 | return -EIO; | |
210 | } | |
5874583d HR |
211 | return 0; |
212 | } | |
213 | ||
214 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
215 | { | |
216 | int i; | |
217 | ||
218 | if (send_command(cmd) || send_argument(key)) { | |
219 | pr_warn("%s: read arg fail\n", key); | |
220 | return -EIO; | |
221 | } | |
6f2fad74 NB |
222 | |
223 | outb(len, APPLESMC_DATA_PORT); | |
6f2fad74 NB |
224 | |
225 | for (i = 0; i < len; i++) { | |
5874583d HR |
226 | if (__wait_status(0x05)) { |
227 | pr_warn("%s: read data fail\n", key); | |
6f2fad74 | 228 | return -EIO; |
5874583d | 229 | } |
6f2fad74 | 230 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 231 | } |
6f2fad74 NB |
232 | |
233 | return 0; | |
234 | } | |
235 | ||
5874583d | 236 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
237 | { |
238 | int i; | |
239 | ||
5874583d HR |
240 | if (send_command(cmd) || send_argument(key)) { |
241 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 242 | return -EIO; |
6f2fad74 NB |
243 | } |
244 | ||
245 | outb(len, APPLESMC_DATA_PORT); | |
246 | ||
247 | for (i = 0; i < len; i++) { | |
5874583d HR |
248 | if (__wait_status(0x04)) { |
249 | pr_warn("%s: write data fail\n", key); | |
6f2fad74 | 250 | return -EIO; |
5874583d | 251 | } |
6f2fad74 NB |
252 | outb(buffer[i], APPLESMC_DATA_PORT); |
253 | } | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
5874583d HR |
258 | static int read_register_count(unsigned int *count) |
259 | { | |
260 | __be32 be; | |
261 | int ret; | |
262 | ||
263 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
264 | if (ret) | |
265 | return ret; | |
266 | ||
267 | *count = be32_to_cpu(be); | |
268 | return 0; | |
269 | } | |
270 | ||
6f2fad74 | 271 | /* |
5874583d HR |
272 | * Serialized I/O |
273 | * | |
274 | * Returns zero on success or a negative error on failure. | |
275 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 276 | */ |
5874583d HR |
277 | |
278 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
279 | u8 *buf, u8 len) | |
6f2fad74 | 280 | { |
5874583d | 281 | int ret; |
6f2fad74 | 282 | |
5874583d HR |
283 | if (entry->len != len) |
284 | return -EINVAL; | |
285 | mutex_lock(&smcreg.mutex); | |
286 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
287 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 288 | |
5874583d HR |
289 | return ret; |
290 | } | |
291 | ||
292 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
293 | const u8 *buf, u8 len) | |
294 | { | |
295 | int ret; | |
296 | ||
297 | if (entry->len != len) | |
298 | return -EINVAL; | |
299 | mutex_lock(&smcreg.mutex); | |
300 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
301 | mutex_unlock(&smcreg.mutex); | |
302 | return ret; | |
303 | } | |
304 | ||
305 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
306 | { | |
307 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
308 | u8 key[4], info[6]; | |
309 | __be32 be; | |
310 | int ret = 0; | |
311 | ||
312 | if (cache->valid) | |
313 | return cache; | |
314 | ||
315 | mutex_lock(&smcreg.mutex); | |
316 | ||
317 | if (cache->valid) | |
318 | goto out; | |
319 | be = cpu_to_be32(index); | |
320 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
321 | if (ret) | |
322 | goto out; | |
323 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
324 | if (ret) | |
325 | goto out; | |
326 | ||
327 | memcpy(cache->key, key, 4); | |
328 | cache->len = info[0]; | |
329 | memcpy(cache->type, &info[1], 4); | |
330 | cache->flags = info[5]; | |
331 | cache->valid = 1; | |
332 | ||
333 | out: | |
334 | mutex_unlock(&smcreg.mutex); | |
335 | if (ret) | |
336 | return ERR_PTR(ret); | |
337 | return cache; | |
338 | } | |
339 | ||
340 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
341 | { | |
342 | int begin = 0, end = smcreg.key_count; | |
343 | const struct applesmc_entry *entry; | |
344 | ||
345 | while (begin != end) { | |
346 | int middle = begin + (end - begin) / 2; | |
347 | entry = applesmc_get_entry_by_index(middle); | |
348 | if (IS_ERR(entry)) | |
349 | return PTR_ERR(entry); | |
350 | if (strcmp(entry->key, key) < 0) | |
351 | begin = middle + 1; | |
352 | else | |
353 | end = middle; | |
6f2fad74 NB |
354 | } |
355 | ||
5874583d HR |
356 | *lo = begin; |
357 | return 0; | |
358 | } | |
6f2fad74 | 359 | |
5874583d HR |
360 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
361 | { | |
362 | int begin = 0, end = smcreg.key_count; | |
363 | const struct applesmc_entry *entry; | |
364 | ||
365 | while (begin != end) { | |
366 | int middle = begin + (end - begin) / 2; | |
367 | entry = applesmc_get_entry_by_index(middle); | |
368 | if (IS_ERR(entry)) | |
369 | return PTR_ERR(entry); | |
370 | if (strcmp(key, entry->key) < 0) | |
371 | end = middle; | |
372 | else | |
373 | begin = middle + 1; | |
6f2fad74 | 374 | } |
6f2fad74 | 375 | |
5874583d | 376 | *hi = begin; |
6f2fad74 NB |
377 | return 0; |
378 | } | |
379 | ||
5874583d | 380 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 381 | { |
5874583d HR |
382 | int begin, end; |
383 | int ret; | |
6f2fad74 | 384 | |
5874583d HR |
385 | ret = applesmc_get_lower_bound(&begin, key); |
386 | if (ret) | |
387 | return ERR_PTR(ret); | |
388 | ret = applesmc_get_upper_bound(&end, key); | |
389 | if (ret) | |
390 | return ERR_PTR(ret); | |
391 | if (end - begin != 1) | |
392 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 393 | |
5874583d HR |
394 | return applesmc_get_entry_by_index(begin); |
395 | } | |
6f2fad74 | 396 | |
5874583d HR |
397 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
398 | { | |
399 | const struct applesmc_entry *entry; | |
6f2fad74 | 400 | |
5874583d HR |
401 | entry = applesmc_get_entry_by_key(key); |
402 | if (IS_ERR(entry)) | |
403 | return PTR_ERR(entry); | |
6f2fad74 | 404 | |
5874583d HR |
405 | return applesmc_read_entry(entry, buffer, len); |
406 | } | |
407 | ||
408 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
409 | { | |
410 | const struct applesmc_entry *entry; | |
411 | ||
412 | entry = applesmc_get_entry_by_key(key); | |
413 | if (IS_ERR(entry)) | |
414 | return PTR_ERR(entry); | |
415 | ||
416 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
417 | } |
418 | ||
40ef06f1 HR |
419 | static int applesmc_has_key(const char *key, bool *value) |
420 | { | |
421 | const struct applesmc_entry *entry; | |
422 | ||
423 | entry = applesmc_get_entry_by_key(key); | |
424 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
425 | return PTR_ERR(entry); | |
426 | ||
427 | *value = !IS_ERR(entry); | |
428 | return 0; | |
429 | } | |
430 | ||
6f2fad74 | 431 | /* |
5874583d | 432 | * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). |
6f2fad74 NB |
433 | */ |
434 | static int applesmc_read_motion_sensor(int index, s16* value) | |
435 | { | |
436 | u8 buffer[2]; | |
437 | int ret; | |
438 | ||
439 | switch (index) { | |
440 | case SENSOR_X: | |
441 | ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); | |
442 | break; | |
443 | case SENSOR_Y: | |
444 | ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); | |
445 | break; | |
446 | case SENSOR_Z: | |
447 | ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); | |
448 | break; | |
449 | default: | |
450 | ret = -EINVAL; | |
451 | } | |
452 | ||
453 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
454 | ||
455 | return ret; | |
456 | } | |
457 | ||
458 | /* | |
2344cd0c | 459 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 460 | */ |
2344cd0c | 461 | static void applesmc_device_init(void) |
6f2fad74 | 462 | { |
2344cd0c | 463 | int total; |
6f2fad74 NB |
464 | u8 buffer[2]; |
465 | ||
40ef06f1 | 466 | if (!smcreg.has_accelerometer) |
2344cd0c | 467 | return; |
6f2fad74 | 468 | |
6f2fad74 | 469 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 470 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 471 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 472 | return; |
6f2fad74 NB |
473 | buffer[0] = 0xe0; |
474 | buffer[1] = 0x00; | |
475 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
476 | msleep(INIT_WAIT_MSECS); | |
477 | } | |
478 | ||
1ee7c71b | 479 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
480 | } |
481 | ||
5874583d HR |
482 | /* |
483 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
484 | */ | |
485 | static int applesmc_init_smcreg_try(void) | |
486 | { | |
487 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 488 | bool left_light_sensor, right_light_sensor; |
3eba2bf7 | 489 | u8 tmp[1]; |
5874583d HR |
490 | int ret; |
491 | ||
492 | if (s->init_complete) | |
493 | return 0; | |
494 | ||
495 | ret = read_register_count(&s->key_count); | |
496 | if (ret) | |
497 | return ret; | |
498 | ||
499 | if (!s->cache) | |
500 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
501 | if (!s->cache) | |
502 | return -ENOMEM; | |
503 | ||
3eba2bf7 HR |
504 | ret = applesmc_read_key(FANS_COUNT, tmp, 1); |
505 | if (ret) | |
506 | return ret; | |
507 | s->fan_count = tmp[0]; | |
508 | ||
9792dadf HR |
509 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
510 | if (ret) | |
511 | return ret; | |
512 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
513 | if (ret) | |
514 | return ret; | |
515 | s->temp_count = s->temp_end - s->temp_begin; | |
516 | ||
40ef06f1 HR |
517 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
518 | if (ret) | |
519 | return ret; | |
520 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
521 | if (ret) | |
522 | return ret; | |
523 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
524 | if (ret) | |
525 | return ret; | |
526 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
527 | if (ret) | |
528 | return ret; | |
529 | ||
530 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
531 | s->init_complete = true; |
532 | ||
3eba2bf7 HR |
533 | pr_info("key=%d fan=%d temp=%d acc=%d lux=%d kbd=%d\n", |
534 | s->key_count, s->fan_count, s->temp_count, | |
40ef06f1 HR |
535 | s->has_accelerometer, |
536 | s->num_light_sensors, | |
537 | s->has_key_backlight); | |
5874583d HR |
538 | |
539 | return 0; | |
540 | } | |
541 | ||
542 | /* | |
543 | * applesmc_init_smcreg - Initialize register cache. | |
544 | * | |
545 | * Retries until initialization is successful, or the operation times out. | |
546 | * | |
547 | */ | |
548 | static int applesmc_init_smcreg(void) | |
549 | { | |
550 | int ms, ret; | |
551 | ||
552 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
553 | ret = applesmc_init_smcreg_try(); | |
554 | if (!ret) { | |
555 | if (ms) | |
556 | pr_info("init_smcreg() took %d ms\n", ms); | |
557 | return 0; | |
558 | } | |
559 | msleep(INIT_WAIT_MSECS); | |
560 | } | |
561 | ||
562 | kfree(smcreg.cache); | |
563 | smcreg.cache = NULL; | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | static void applesmc_destroy_smcreg(void) | |
569 | { | |
570 | kfree(smcreg.cache); | |
571 | smcreg.cache = NULL; | |
572 | smcreg.init_complete = false; | |
573 | } | |
574 | ||
6f2fad74 NB |
575 | /* Device model stuff */ |
576 | static int applesmc_probe(struct platform_device *dev) | |
577 | { | |
5874583d HR |
578 | int ret; |
579 | ||
580 | ret = applesmc_init_smcreg(); | |
581 | if (ret) | |
582 | return ret; | |
583 | ||
2344cd0c | 584 | applesmc_device_init(); |
6f2fad74 | 585 | |
6f2fad74 NB |
586 | return 0; |
587 | } | |
588 | ||
a976f150 HR |
589 | /* Synchronize device with memorized backlight state */ |
590 | static int applesmc_pm_resume(struct device *dev) | |
591 | { | |
40ef06f1 | 592 | if (smcreg.has_key_backlight) |
a976f150 | 593 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
594 | return 0; |
595 | } | |
596 | ||
597 | /* Reinitialize device on resume from hibernation */ | |
598 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 599 | { |
2344cd0c | 600 | applesmc_device_init(); |
a976f150 | 601 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
602 | } |
603 | ||
47145210 | 604 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
605 | .resume = applesmc_pm_resume, |
606 | .restore = applesmc_pm_restore, | |
607 | }; | |
608 | ||
6f2fad74 NB |
609 | static struct platform_driver applesmc_driver = { |
610 | .probe = applesmc_probe, | |
6f2fad74 NB |
611 | .driver = { |
612 | .name = "applesmc", | |
613 | .owner = THIS_MODULE, | |
a976f150 | 614 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
615 | }, |
616 | }; | |
617 | ||
618 | /* | |
619 | * applesmc_calibrate - Set our "resting" values. Callers must | |
620 | * hold applesmc_lock. | |
621 | */ | |
622 | static void applesmc_calibrate(void) | |
623 | { | |
624 | applesmc_read_motion_sensor(SENSOR_X, &rest_x); | |
625 | applesmc_read_motion_sensor(SENSOR_Y, &rest_y); | |
626 | rest_x = -rest_x; | |
627 | } | |
628 | ||
d5cf2b99 | 629 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 630 | { |
d5cf2b99 | 631 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
632 | s16 x, y; |
633 | ||
6f2fad74 | 634 | if (applesmc_read_motion_sensor(SENSOR_X, &x)) |
5874583d | 635 | return; |
6f2fad74 | 636 | if (applesmc_read_motion_sensor(SENSOR_Y, &y)) |
5874583d | 637 | return; |
6f2fad74 NB |
638 | |
639 | x = -x; | |
d5cf2b99 DT |
640 | input_report_abs(idev, ABS_X, x - rest_x); |
641 | input_report_abs(idev, ABS_Y, y - rest_y); | |
642 | input_sync(idev); | |
6f2fad74 NB |
643 | } |
644 | ||
645 | /* Sysfs Files */ | |
646 | ||
fa74419b NB |
647 | static ssize_t applesmc_name_show(struct device *dev, |
648 | struct device_attribute *attr, char *buf) | |
649 | { | |
650 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
651 | } | |
652 | ||
6f2fad74 NB |
653 | static ssize_t applesmc_position_show(struct device *dev, |
654 | struct device_attribute *attr, char *buf) | |
655 | { | |
656 | int ret; | |
657 | s16 x, y, z; | |
658 | ||
6f2fad74 NB |
659 | ret = applesmc_read_motion_sensor(SENSOR_X, &x); |
660 | if (ret) | |
661 | goto out; | |
662 | ret = applesmc_read_motion_sensor(SENSOR_Y, &y); | |
663 | if (ret) | |
664 | goto out; | |
665 | ret = applesmc_read_motion_sensor(SENSOR_Z, &z); | |
666 | if (ret) | |
667 | goto out; | |
668 | ||
669 | out: | |
6f2fad74 NB |
670 | if (ret) |
671 | return ret; | |
672 | else | |
673 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
674 | } | |
675 | ||
676 | static ssize_t applesmc_light_show(struct device *dev, | |
677 | struct device_attribute *attr, char *sysfsbuf) | |
678 | { | |
5874583d | 679 | const struct applesmc_entry *entry; |
8bd1a12a | 680 | static int data_length; |
6f2fad74 NB |
681 | int ret; |
682 | u8 left = 0, right = 0; | |
5874583d | 683 | u8 buffer[10]; |
6f2fad74 | 684 | |
8bd1a12a | 685 | if (!data_length) { |
5874583d HR |
686 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
687 | if (IS_ERR(entry)) | |
688 | return PTR_ERR(entry); | |
689 | if (entry->len > 10) | |
690 | return -ENXIO; | |
691 | data_length = entry->len; | |
1ee7c71b | 692 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
693 | } |
694 | ||
695 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
696 | /* newer macbooks report a single 10-bit bigendian value */ |
697 | if (data_length == 10) { | |
698 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
699 | goto out; | |
700 | } | |
6f2fad74 NB |
701 | left = buffer[2]; |
702 | if (ret) | |
703 | goto out; | |
8bd1a12a | 704 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
705 | right = buffer[2]; |
706 | ||
707 | out: | |
6f2fad74 NB |
708 | if (ret) |
709 | return ret; | |
710 | else | |
711 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
712 | } | |
713 | ||
fa5575cf AM |
714 | /* Displays sensor key as label */ |
715 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
716 | struct device_attribute *devattr, char *sysfsbuf) | |
717 | { | |
9792dadf HR |
718 | int index = smcreg.temp_begin + to_index(devattr); |
719 | const struct applesmc_entry *entry; | |
fa5575cf | 720 | |
9792dadf HR |
721 | entry = applesmc_get_entry_by_index(index); |
722 | if (IS_ERR(entry)) | |
723 | return PTR_ERR(entry); | |
724 | ||
725 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); | |
fa5575cf AM |
726 | } |
727 | ||
6f2fad74 NB |
728 | /* Displays degree Celsius * 1000 */ |
729 | static ssize_t applesmc_show_temperature(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; | |
6f2fad74 NB |
734 | int ret; |
735 | u8 buffer[2]; | |
736 | unsigned int temp; | |
6f2fad74 | 737 | |
9792dadf HR |
738 | entry = applesmc_get_entry_by_index(index); |
739 | if (IS_ERR(entry)) | |
740 | return PTR_ERR(entry); | |
dcdea261 HR |
741 | if (entry->len > 2) |
742 | return -EINVAL; | |
6f2fad74 | 743 | |
dcdea261 | 744 | ret = applesmc_read_entry(entry, buffer, entry->len); |
6f2fad74 NB |
745 | if (ret) |
746 | return ret; | |
9792dadf | 747 | |
dcdea261 HR |
748 | if (entry->len == 2) { |
749 | temp = buffer[0] * 1000; | |
750 | temp += (buffer[1] >> 6) * 250; | |
751 | } else { | |
752 | temp = buffer[0] * 4000; | |
753 | } | |
9792dadf HR |
754 | |
755 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); | |
6f2fad74 NB |
756 | } |
757 | ||
758 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
759 | struct device_attribute *attr, char *sysfsbuf) | |
760 | { | |
761 | int ret; | |
762 | unsigned int speed = 0; | |
763 | char newkey[5]; | |
764 | u8 buffer[2]; | |
6f2fad74 | 765 | |
3eba2bf7 | 766 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 767 | |
6f2fad74 NB |
768 | ret = applesmc_read_key(newkey, buffer, 2); |
769 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
770 | ||
6f2fad74 NB |
771 | if (ret) |
772 | return ret; | |
773 | else | |
774 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
775 | } | |
776 | ||
777 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
778 | struct device_attribute *attr, | |
779 | const char *sysfsbuf, size_t count) | |
780 | { | |
781 | int ret; | |
782 | u32 speed; | |
783 | char newkey[5]; | |
784 | u8 buffer[2]; | |
6f2fad74 NB |
785 | |
786 | speed = simple_strtoul(sysfsbuf, NULL, 10); | |
787 | ||
788 | if (speed > 0x4000) /* Bigger than a 14-bit value */ | |
789 | return -EINVAL; | |
790 | ||
3eba2bf7 | 791 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 792 | |
6f2fad74 NB |
793 | buffer[0] = (speed >> 6) & 0xff; |
794 | buffer[1] = (speed << 2) & 0xff; | |
795 | ret = applesmc_write_key(newkey, buffer, 2); | |
796 | ||
6f2fad74 NB |
797 | if (ret) |
798 | return ret; | |
799 | else | |
800 | return count; | |
801 | } | |
802 | ||
803 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
3eba2bf7 | 804 | struct device_attribute *attr, char *sysfsbuf) |
6f2fad74 NB |
805 | { |
806 | int ret; | |
807 | u16 manual = 0; | |
808 | u8 buffer[2]; | |
6f2fad74 | 809 | |
6f2fad74 | 810 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
3eba2bf7 | 811 | manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; |
6f2fad74 | 812 | |
6f2fad74 NB |
813 | if (ret) |
814 | return ret; | |
815 | else | |
816 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
817 | } | |
818 | ||
819 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
3eba2bf7 | 820 | struct device_attribute *attr, |
6f2fad74 NB |
821 | const char *sysfsbuf, size_t count) |
822 | { | |
823 | int ret; | |
824 | u8 buffer[2]; | |
825 | u32 input; | |
826 | u16 val; | |
6f2fad74 NB |
827 | |
828 | input = simple_strtoul(sysfsbuf, NULL, 10); | |
829 | ||
6f2fad74 NB |
830 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
831 | val = (buffer[0] << 8 | buffer[1]); | |
832 | if (ret) | |
833 | goto out; | |
834 | ||
835 | if (input) | |
3eba2bf7 | 836 | val = val | (0x01 << to_index(attr)); |
6f2fad74 | 837 | else |
3eba2bf7 | 838 | val = val & ~(0x01 << to_index(attr)); |
6f2fad74 NB |
839 | |
840 | buffer[0] = (val >> 8) & 0xFF; | |
841 | buffer[1] = val & 0xFF; | |
842 | ||
843 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
844 | ||
845 | out: | |
6f2fad74 NB |
846 | if (ret) |
847 | return ret; | |
848 | else | |
849 | return count; | |
850 | } | |
851 | ||
852 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
853 | struct device_attribute *attr, char *sysfsbuf) | |
854 | { | |
855 | int ret; | |
856 | char newkey[5]; | |
857 | u8 buffer[17]; | |
6f2fad74 | 858 | |
3eba2bf7 | 859 | sprintf(newkey, FAN_ID_FMT, to_index(attr)); |
6f2fad74 | 860 | |
6f2fad74 NB |
861 | ret = applesmc_read_key(newkey, buffer, 16); |
862 | buffer[16] = 0; | |
863 | ||
6f2fad74 NB |
864 | if (ret) |
865 | return ret; | |
866 | else | |
867 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
868 | } | |
869 | ||
870 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
871 | struct device_attribute *attr, char *sysfsbuf) | |
872 | { | |
873 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
874 | } | |
875 | ||
876 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
877 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
878 | { | |
6f2fad74 | 879 | applesmc_calibrate(); |
6f2fad74 NB |
880 | |
881 | return count; | |
882 | } | |
883 | ||
6f2fad74 NB |
884 | static void applesmc_backlight_set(struct work_struct *work) |
885 | { | |
a976f150 | 886 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
887 | } |
888 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
889 | ||
890 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
891 | enum led_brightness value) | |
892 | { | |
893 | int ret; | |
894 | ||
a976f150 | 895 | backlight_state[0] = value; |
6f2fad74 NB |
896 | ret = queue_work(applesmc_led_wq, &backlight_work); |
897 | ||
898 | if (debug && (!ret)) | |
899 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
900 | } | |
901 | ||
902 | static ssize_t applesmc_key_count_show(struct device *dev, | |
903 | struct device_attribute *attr, char *sysfsbuf) | |
904 | { | |
905 | int ret; | |
906 | u8 buffer[4]; | |
907 | u32 count; | |
908 | ||
6f2fad74 NB |
909 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
910 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
911 | ((u32)buffer[2]<<8) + buffer[3]; | |
912 | ||
6f2fad74 NB |
913 | if (ret) |
914 | return ret; | |
915 | else | |
916 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
917 | } | |
918 | ||
919 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
920 | struct device_attribute *attr, char *sysfsbuf) | |
921 | { | |
5874583d | 922 | const struct applesmc_entry *entry; |
6f2fad74 NB |
923 | int ret; |
924 | ||
5874583d HR |
925 | entry = applesmc_get_entry_by_index(key_at_index); |
926 | if (IS_ERR(entry)) | |
927 | return PTR_ERR(entry); | |
928 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
929 | if (ret) | |
6f2fad74 | 930 | return ret; |
6f2fad74 | 931 | |
5874583d | 932 | return entry->len; |
6f2fad74 NB |
933 | } |
934 | ||
935 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
936 | struct device_attribute *attr, char *sysfsbuf) | |
937 | { | |
5874583d | 938 | const struct applesmc_entry *entry; |
6f2fad74 | 939 | |
5874583d HR |
940 | entry = applesmc_get_entry_by_index(key_at_index); |
941 | if (IS_ERR(entry)) | |
942 | return PTR_ERR(entry); | |
6f2fad74 | 943 | |
5874583d | 944 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
945 | } |
946 | ||
947 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
948 | struct device_attribute *attr, char *sysfsbuf) | |
949 | { | |
5874583d | 950 | const struct applesmc_entry *entry; |
6f2fad74 | 951 | |
5874583d HR |
952 | entry = applesmc_get_entry_by_index(key_at_index); |
953 | if (IS_ERR(entry)) | |
954 | return PTR_ERR(entry); | |
6f2fad74 | 955 | |
5874583d | 956 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
957 | } |
958 | ||
959 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
960 | struct device_attribute *attr, char *sysfsbuf) | |
961 | { | |
5874583d | 962 | const struct applesmc_entry *entry; |
6f2fad74 | 963 | |
5874583d HR |
964 | entry = applesmc_get_entry_by_index(key_at_index); |
965 | if (IS_ERR(entry)) | |
966 | return PTR_ERR(entry); | |
6f2fad74 | 967 | |
5874583d | 968 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
969 | } |
970 | ||
971 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
972 | struct device_attribute *attr, char *sysfsbuf) | |
973 | { | |
974 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
975 | } | |
976 | ||
977 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
978 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
979 | { | |
5874583d | 980 | unsigned long newkey; |
6f2fad74 | 981 | |
5874583d HR |
982 | if (strict_strtoul(sysfsbuf, 10, &newkey) < 0 |
983 | || newkey >= smcreg.key_count) | |
984 | return -EINVAL; | |
6f2fad74 | 985 | |
5874583d | 986 | key_at_index = newkey; |
6f2fad74 NB |
987 | return count; |
988 | } | |
989 | ||
990 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 991 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
992 | .default_trigger = "nand-disk", |
993 | .brightness_set = applesmc_brightness_set, | |
994 | }; | |
995 | ||
0b0b5dff HR |
996 | static struct applesmc_node_group info_group[] = { |
997 | { "name", applesmc_name_show }, | |
998 | { "key_count", applesmc_key_count_show }, | |
999 | { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store }, | |
1000 | { "key_at_index_name", applesmc_key_at_index_name_show }, | |
1001 | { "key_at_index_type", applesmc_key_at_index_type_show }, | |
1002 | { "key_at_index_data_length", applesmc_key_at_index_data_length_show }, | |
1003 | { "key_at_index_data", applesmc_key_at_index_read_show }, | |
1004 | { } | |
6f2fad74 NB |
1005 | }; |
1006 | ||
0b0b5dff HR |
1007 | static struct applesmc_node_group accelerometer_group[] = { |
1008 | { "position", applesmc_position_show }, | |
1009 | { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store }, | |
1010 | { } | |
6f2fad74 NB |
1011 | }; |
1012 | ||
0b0b5dff HR |
1013 | static struct applesmc_node_group light_sensor_group[] = { |
1014 | { "light", applesmc_light_show }, | |
1015 | { } | |
1016 | }; | |
6f2fad74 | 1017 | |
3eba2bf7 HR |
1018 | static struct applesmc_node_group fan_group[] = { |
1019 | { "fan%d_label", applesmc_show_fan_position }, | |
1020 | { "fan%d_input", applesmc_show_fan_speed, NULL, 0 }, | |
1021 | { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 }, | |
1022 | { "fan%d_max", applesmc_show_fan_speed, NULL, 2 }, | |
1023 | { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 }, | |
1024 | { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 }, | |
1025 | { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual }, | |
1026 | { } | |
6f2fad74 NB |
1027 | }; |
1028 | ||
9792dadf HR |
1029 | static struct applesmc_node_group temp_group[] = { |
1030 | { "temp%d_label", applesmc_show_sensor_label }, | |
1031 | { "temp%d_input", applesmc_show_temperature }, | |
1032 | { } | |
fa5575cf AM |
1033 | }; |
1034 | ||
6f2fad74 NB |
1035 | /* Module stuff */ |
1036 | ||
9792dadf HR |
1037 | /* |
1038 | * applesmc_destroy_nodes - remove files and free associated memory | |
1039 | */ | |
1040 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1041 | { | |
1042 | struct applesmc_node_group *grp; | |
1043 | struct applesmc_dev_attr *node; | |
1044 | ||
1045 | for (grp = groups; grp->nodes; grp++) { | |
1046 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1047 | sysfs_remove_file(&pdev->dev.kobj, | |
1048 | &node->sda.dev_attr.attr); | |
1049 | kfree(grp->nodes); | |
1050 | grp->nodes = NULL; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1056 | */ | |
1057 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1058 | { | |
1059 | struct applesmc_node_group *grp; | |
1060 | struct applesmc_dev_attr *node; | |
1061 | struct attribute *attr; | |
1062 | int ret, i; | |
1063 | ||
1064 | for (grp = groups; grp->format; grp++) { | |
1065 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1066 | if (!grp->nodes) { | |
1067 | ret = -ENOMEM; | |
1068 | goto out; | |
1069 | } | |
1070 | for (i = 0; i < num; i++) { | |
1071 | node = &grp->nodes[i]; | |
1072 | sprintf(node->name, grp->format, i + 1); | |
3eba2bf7 | 1073 | node->sda.index = (grp->option << 16) | (i & 0xffff); |
9792dadf HR |
1074 | node->sda.dev_attr.show = grp->show; |
1075 | node->sda.dev_attr.store = grp->store; | |
1076 | attr = &node->sda.dev_attr.attr; | |
1077 | attr->name = node->name; | |
1078 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1079 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1080 | if (ret) { | |
1081 | attr->name = NULL; | |
1082 | goto out; | |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | return 0; | |
1088 | out: | |
1089 | applesmc_destroy_nodes(groups); | |
1090 | return ret; | |
1091 | } | |
1092 | ||
6f2fad74 NB |
1093 | /* Create accelerometer ressources */ |
1094 | static int applesmc_create_accelerometer(void) | |
1095 | { | |
d5cf2b99 | 1096 | struct input_dev *idev; |
6f2fad74 NB |
1097 | int ret; |
1098 | ||
0b0b5dff HR |
1099 | if (!smcreg.has_accelerometer) |
1100 | return 0; | |
1101 | ||
1102 | ret = applesmc_create_nodes(accelerometer_group, 1); | |
6f2fad74 NB |
1103 | if (ret) |
1104 | goto out; | |
1105 | ||
d5cf2b99 | 1106 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1107 | if (!applesmc_idev) { |
1108 | ret = -ENOMEM; | |
1109 | goto out_sysfs; | |
1110 | } | |
1111 | ||
d5cf2b99 DT |
1112 | applesmc_idev->poll = applesmc_idev_poll; |
1113 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1114 | ||
6f2fad74 NB |
1115 | /* initial calibrate for the input device */ |
1116 | applesmc_calibrate(); | |
1117 | ||
d5cf2b99 DT |
1118 | /* initialize the input device */ |
1119 | idev = applesmc_idev->input; | |
1120 | idev->name = "applesmc"; | |
1121 | idev->id.bustype = BUS_HOST; | |
1122 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1123 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1124 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1125 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1126 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1127 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1128 | ||
d5cf2b99 | 1129 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1130 | if (ret) |
1131 | goto out_idev; | |
1132 | ||
6f2fad74 NB |
1133 | return 0; |
1134 | ||
1135 | out_idev: | |
d5cf2b99 | 1136 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1137 | |
1138 | out_sysfs: | |
0b0b5dff | 1139 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 NB |
1140 | |
1141 | out: | |
1ee7c71b | 1142 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1143 | return ret; |
1144 | } | |
1145 | ||
1146 | /* Release all ressources used by the accelerometer */ | |
1147 | static void applesmc_release_accelerometer(void) | |
1148 | { | |
0b0b5dff HR |
1149 | if (!smcreg.has_accelerometer) |
1150 | return; | |
d5cf2b99 DT |
1151 | input_unregister_polled_device(applesmc_idev); |
1152 | input_free_polled_device(applesmc_idev); | |
0b0b5dff | 1153 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 | 1154 | } |
0b0b5dff HR |
1155 | |
1156 | static int applesmc_create_light_sensor(void) | |
1157 | { | |
1158 | if (!smcreg.num_light_sensors) | |
1159 | return 0; | |
1160 | return applesmc_create_nodes(light_sensor_group, 1); | |
1161 | } | |
1162 | ||
1163 | static void applesmc_release_light_sensor(void) | |
1164 | { | |
1165 | if (!smcreg.num_light_sensors) | |
1166 | return; | |
1167 | applesmc_destroy_nodes(light_sensor_group); | |
1168 | } | |
1169 | ||
1170 | static int applesmc_create_key_backlight(void) | |
1171 | { | |
1172 | if (!smcreg.has_key_backlight) | |
1173 | return 0; | |
1174 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1175 | if (!applesmc_led_wq) | |
1176 | return -ENOMEM; | |
1177 | return led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1178 | } | |
1179 | ||
1180 | static void applesmc_release_key_backlight(void) | |
1181 | { | |
1182 | if (!smcreg.has_key_backlight) | |
1183 | return; | |
1184 | led_classdev_unregister(&applesmc_backlight); | |
1185 | destroy_workqueue(applesmc_led_wq); | |
1186 | } | |
1187 | ||
40ef06f1 HR |
1188 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1189 | { | |
1190 | return 1; | |
1191 | } | |
6f2fad74 NB |
1192 | |
1193 | /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1194 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ | |
1195 | static __initdata struct dmi_system_id applesmc_whitelist[] = { | |
f5274c97 HR |
1196 | { applesmc_dmi_match, "Apple MacBook Air", { |
1197 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1198 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1199 | }, |
6f2fad74 NB |
1200 | { applesmc_dmi_match, "Apple MacBook Pro", { |
1201 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1202 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, | |
40ef06f1 | 1203 | }, |
cd19ba13 RO |
1204 | { applesmc_dmi_match, "Apple MacBook", { |
1205 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1206 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, | |
40ef06f1 | 1207 | }, |
6f2fad74 NB |
1208 | { applesmc_dmi_match, "Apple Macmini", { |
1209 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1210 | DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, | |
40ef06f1 | 1211 | }, |
45a3a36b HR |
1212 | { applesmc_dmi_match, "Apple MacPro", { |
1213 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1214 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1215 | }, |
9f86f28d RDI |
1216 | { applesmc_dmi_match, "Apple iMac", { |
1217 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1218 | DMI_MATCH(DMI_PRODUCT_NAME,"iMac") }, | |
40ef06f1 | 1219 | }, |
6f2fad74 NB |
1220 | { .ident = NULL } |
1221 | }; | |
1222 | ||
1223 | static int __init applesmc_init(void) | |
1224 | { | |
1225 | int ret; | |
6f2fad74 | 1226 | |
6f2fad74 | 1227 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1228 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1229 | ret = -ENODEV; |
1230 | goto out; | |
1231 | } | |
1232 | ||
1233 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1234 | "applesmc")) { | |
1235 | ret = -ENXIO; | |
1236 | goto out; | |
1237 | } | |
1238 | ||
1239 | ret = platform_driver_register(&applesmc_driver); | |
1240 | if (ret) | |
1241 | goto out_region; | |
1242 | ||
ddfbf2af JD |
1243 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1244 | NULL, 0); | |
6f2fad74 NB |
1245 | if (IS_ERR(pdev)) { |
1246 | ret = PTR_ERR(pdev); | |
1247 | goto out_driver; | |
1248 | } | |
1249 | ||
5874583d HR |
1250 | /* create register cache */ |
1251 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1252 | if (ret) |
1253 | goto out_device; | |
fa74419b | 1254 | |
0b0b5dff | 1255 | ret = applesmc_create_nodes(info_group, 1); |
5874583d HR |
1256 | if (ret) |
1257 | goto out_smcreg; | |
1258 | ||
3eba2bf7 HR |
1259 | ret = applesmc_create_nodes(fan_group, smcreg.fan_count); |
1260 | if (ret) | |
1261 | goto out_info; | |
6f2fad74 | 1262 | |
9792dadf HR |
1263 | ret = applesmc_create_nodes(temp_group, smcreg.temp_count); |
1264 | if (ret) | |
1265 | goto out_fans; | |
6f2fad74 | 1266 | |
0b0b5dff HR |
1267 | ret = applesmc_create_accelerometer(); |
1268 | if (ret) | |
1269 | goto out_temperature; | |
6f2fad74 | 1270 | |
0b0b5dff HR |
1271 | ret = applesmc_create_light_sensor(); |
1272 | if (ret) | |
1273 | goto out_accelerometer; | |
6f2fad74 | 1274 | |
0b0b5dff HR |
1275 | ret = applesmc_create_key_backlight(); |
1276 | if (ret) | |
1277 | goto out_light_sysfs; | |
6f2fad74 | 1278 | |
1beeffe4 TJ |
1279 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1280 | if (IS_ERR(hwmon_dev)) { | |
1281 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1282 | goto out_light_ledclass; |
1283 | } | |
1284 | ||
6f2fad74 NB |
1285 | return 0; |
1286 | ||
1287 | out_light_ledclass: | |
0b0b5dff | 1288 | applesmc_release_key_backlight(); |
6f2fad74 | 1289 | out_light_sysfs: |
0b0b5dff | 1290 | applesmc_release_light_sensor(); |
6f2fad74 | 1291 | out_accelerometer: |
0b0b5dff | 1292 | applesmc_release_accelerometer(); |
6f2fad74 | 1293 | out_temperature: |
9792dadf | 1294 | applesmc_destroy_nodes(temp_group); |
0559a538 | 1295 | out_fans: |
3eba2bf7 HR |
1296 | applesmc_destroy_nodes(fan_group); |
1297 | out_info: | |
0b0b5dff | 1298 | applesmc_destroy_nodes(info_group); |
5874583d HR |
1299 | out_smcreg: |
1300 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1301 | out_device: |
1302 | platform_device_unregister(pdev); | |
1303 | out_driver: | |
1304 | platform_driver_unregister(&applesmc_driver); | |
1305 | out_region: | |
1306 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1307 | out: | |
1ee7c71b | 1308 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1309 | return ret; |
1310 | } | |
1311 | ||
1312 | static void __exit applesmc_exit(void) | |
1313 | { | |
1beeffe4 | 1314 | hwmon_device_unregister(hwmon_dev); |
0b0b5dff HR |
1315 | applesmc_release_key_backlight(); |
1316 | applesmc_release_light_sensor(); | |
1317 | applesmc_release_accelerometer(); | |
9792dadf | 1318 | applesmc_destroy_nodes(temp_group); |
3eba2bf7 | 1319 | applesmc_destroy_nodes(fan_group); |
0b0b5dff | 1320 | applesmc_destroy_nodes(info_group); |
5874583d | 1321 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1322 | platform_device_unregister(pdev); |
1323 | platform_driver_unregister(&applesmc_driver); | |
1324 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
6f2fad74 NB |
1325 | } |
1326 | ||
1327 | module_init(applesmc_init); | |
1328 | module_exit(applesmc_exit); | |
1329 | ||
1330 | MODULE_AUTHOR("Nicolas Boichat"); | |
1331 | MODULE_DESCRIPTION("Apple SMC"); | |
1332 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1333 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |