Commit | Line | Data |
---|---|---|
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> | |
aa8521ec | 11 | * Copyright (C) 2005 Jesper Juhl <jj@chaosbits.net> |
6f2fad74 NB |
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> | |
fa845740 | 46 | #include <linux/err.h> |
6f2fad74 NB |
47 | |
48 | /* data port used by Apple SMC */ | |
49 | #define APPLESMC_DATA_PORT 0x300 | |
50 | /* command/status port used by Apple SMC */ | |
51 | #define APPLESMC_CMD_PORT 0x304 | |
52 | ||
53 | #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ | |
54 | ||
55 | #define APPLESMC_MAX_DATA_LENGTH 32 | |
56 | ||
521cf648 | 57 | /* wait up to 128 ms for a status change. */ |
a332bf9a | 58 | #define APPLESMC_MIN_WAIT 0x0010 |
829917cd | 59 | #define APPLESMC_RETRY_WAIT 0x0100 |
521cf648 | 60 | #define APPLESMC_MAX_WAIT 0x20000 |
8c9398d1 | 61 | |
6f2fad74 NB |
62 | #define APPLESMC_READ_CMD 0x10 |
63 | #define APPLESMC_WRITE_CMD 0x11 | |
64 | #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 | |
65 | #define APPLESMC_GET_KEY_TYPE_CMD 0x13 | |
66 | ||
67 | #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */ | |
68 | ||
8bd1a12a HR |
69 | #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */ |
70 | #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */ | |
d5cf2b99 | 71 | #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */ |
6f2fad74 | 72 | |
d5cf2b99 | 73 | #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */ |
6f2fad74 NB |
74 | |
75 | #define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */ | |
76 | #define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */ | |
77 | #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */ | |
78 | #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */ | |
79 | ||
80 | #define FANS_COUNT "FNum" /* r-o ui8 */ | |
81 | #define FANS_MANUAL "FS! " /* r-w ui16 */ | |
3eba2bf7 | 82 | #define FAN_ID_FMT "F%dID" /* r-o char[16] */ |
6f2fad74 | 83 | |
b6e5122f HR |
84 | #define TEMP_SENSOR_TYPE "sp78" |
85 | ||
6f2fad74 | 86 | /* List of keys used to read/write fan speeds */ |
3eba2bf7 HR |
87 | static const char *const fan_speed_fmt[] = { |
88 | "F%dAc", /* actual speed */ | |
89 | "F%dMn", /* minimum speed (rw) */ | |
90 | "F%dMx", /* maximum speed */ | |
91 | "F%dSf", /* safe speed - not all models */ | |
92 | "F%dTg", /* target speed (manual: rw) */ | |
6f2fad74 NB |
93 | }; |
94 | ||
95 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
96 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
97 | ||
d5cf2b99 | 98 | #define APPLESMC_POLL_INTERVAL 50 /* msecs */ |
6f2fad74 NB |
99 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ |
100 | #define APPLESMC_INPUT_FLAT 4 | |
101 | ||
3eba2bf7 HR |
102 | #define to_index(attr) (to_sensor_dev_attr(attr)->index & 0xffff) |
103 | #define to_option(attr) (to_sensor_dev_attr(attr)->index >> 16) | |
9792dadf | 104 | |
9792dadf HR |
105 | /* Dynamic device node attributes */ |
106 | struct applesmc_dev_attr { | |
107 | struct sensor_device_attribute sda; /* hwmon attributes */ | |
108 | char name[32]; /* room for node file name */ | |
109 | }; | |
110 | ||
111 | /* Dynamic device node group */ | |
112 | struct applesmc_node_group { | |
113 | char *format; /* format string */ | |
114 | void *show; /* show function */ | |
115 | void *store; /* store function */ | |
3eba2bf7 | 116 | int option; /* function argument */ |
9792dadf HR |
117 | struct applesmc_dev_attr *nodes; /* dynamic node array */ |
118 | }; | |
119 | ||
5874583d HR |
120 | /* AppleSMC entry - cached register information */ |
121 | struct applesmc_entry { | |
122 | char key[5]; /* four-letter key code */ | |
123 | u8 valid; /* set when entry is successfully read once */ | |
124 | u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */ | |
125 | char type[5]; /* four-letter type code */ | |
126 | u8 flags; /* 0x10: func; 0x40: write; 0x80: read */ | |
127 | }; | |
128 | ||
129 | /* Register lookup and registers common to all SMCs */ | |
130 | static struct applesmc_registers { | |
131 | struct mutex mutex; /* register read/write mutex */ | |
132 | unsigned int key_count; /* number of SMC registers */ | |
3eba2bf7 | 133 | unsigned int fan_count; /* number of fans */ |
9792dadf HR |
134 | unsigned int temp_count; /* number of temperature registers */ |
135 | unsigned int temp_begin; /* temperature lower index bound */ | |
136 | unsigned int temp_end; /* temperature upper index bound */ | |
e30bca12 | 137 | unsigned int index_count; /* size of temperature index array */ |
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 */ | |
e30bca12 | 143 | const char **index; /* temperature key index */ |
5874583d HR |
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 | |
6f2fad74 NB |
157 | /* |
158 | * Last index written to key_at_index sysfs file, and value to use for all other | |
159 | * key_at_index_* sysfs files. | |
160 | */ | |
161 | static unsigned int key_at_index; | |
162 | ||
163 | static struct workqueue_struct *applesmc_led_wq; | |
164 | ||
165 | /* | |
829917cd | 166 | * wait_read - Wait for a byte to appear on SMC port. Callers must |
6f2fad74 NB |
167 | * hold applesmc_lock. |
168 | */ | |
829917cd | 169 | static int wait_read(void) |
6f2fad74 | 170 | { |
829917cd | 171 | u8 status; |
8c9398d1 | 172 | int us; |
8c9398d1 HR |
173 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
174 | udelay(us); | |
829917cd HR |
175 | status = inb(APPLESMC_CMD_PORT); |
176 | /* read: wait for smc to settle */ | |
177 | if (status & 0x01) | |
6f2fad74 | 178 | return 0; |
6f2fad74 NB |
179 | } |
180 | ||
829917cd | 181 | pr_warn("wait_read() fail: 0x%02x\n", status); |
6f2fad74 NB |
182 | return -EIO; |
183 | } | |
184 | ||
84d2d7f2 | 185 | /* |
829917cd HR |
186 | * send_byte - Write to SMC port, retrying when necessary. Callers |
187 | * must hold applesmc_lock. | |
84d2d7f2 | 188 | */ |
829917cd | 189 | static int send_byte(u8 cmd, u16 port) |
84d2d7f2 | 190 | { |
829917cd | 191 | u8 status; |
8c9398d1 | 192 | int us; |
829917cd HR |
193 | |
194 | outb(cmd, port); | |
8c9398d1 | 195 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
8c9398d1 | 196 | udelay(us); |
829917cd HR |
197 | status = inb(APPLESMC_CMD_PORT); |
198 | /* write: wait for smc to settle */ | |
199 | if (status & 0x02) | |
200 | continue; | |
201 | /* ready: cmd accepted, return */ | |
202 | if (status & 0x04) | |
84d2d7f2 | 203 | return 0; |
829917cd HR |
204 | /* timeout: give up */ |
205 | if (us << 1 == APPLESMC_MAX_WAIT) | |
206 | break; | |
207 | /* busy: long wait and resend */ | |
208 | udelay(APPLESMC_RETRY_WAIT); | |
209 | outb(cmd, port); | |
84d2d7f2 | 210 | } |
829917cd HR |
211 | |
212 | pr_warn("send_byte(0x%02x, 0x%04x) fail: 0x%02x\n", cmd, port, status); | |
84d2d7f2 HR |
213 | return -EIO; |
214 | } | |
215 | ||
829917cd HR |
216 | static int send_command(u8 cmd) |
217 | { | |
218 | return send_byte(cmd, APPLESMC_CMD_PORT); | |
219 | } | |
220 | ||
5874583d | 221 | static int send_argument(const char *key) |
6f2fad74 NB |
222 | { |
223 | int i; | |
224 | ||
829917cd HR |
225 | for (i = 0; i < 4; i++) |
226 | if (send_byte(key[i], APPLESMC_DATA_PORT)) | |
6f2fad74 | 227 | return -EIO; |
5874583d HR |
228 | return 0; |
229 | } | |
230 | ||
231 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
232 | { | |
233 | int i; | |
234 | ||
235 | if (send_command(cmd) || send_argument(key)) { | |
ac852edb | 236 | pr_warn("%.4s: read arg fail\n", key); |
5874583d HR |
237 | return -EIO; |
238 | } | |
6f2fad74 | 239 | |
829917cd HR |
240 | if (send_byte(len, APPLESMC_DATA_PORT)) { |
241 | pr_warn("%.4s: read len fail\n", key); | |
242 | return -EIO; | |
243 | } | |
6f2fad74 NB |
244 | |
245 | for (i = 0; i < len; i++) { | |
829917cd HR |
246 | if (wait_read()) { |
247 | pr_warn("%.4s: read data[%d] fail\n", key, i); | |
6f2fad74 | 248 | return -EIO; |
5874583d | 249 | } |
6f2fad74 | 250 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 251 | } |
6f2fad74 NB |
252 | |
253 | return 0; | |
254 | } | |
255 | ||
5874583d | 256 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
257 | { |
258 | int i; | |
259 | ||
5874583d HR |
260 | if (send_command(cmd) || send_argument(key)) { |
261 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 262 | return -EIO; |
6f2fad74 NB |
263 | } |
264 | ||
829917cd HR |
265 | if (send_byte(len, APPLESMC_DATA_PORT)) { |
266 | pr_warn("%.4s: write len fail\n", key); | |
267 | return -EIO; | |
268 | } | |
6f2fad74 NB |
269 | |
270 | for (i = 0; i < len; i++) { | |
829917cd | 271 | if (send_byte(buffer[i], APPLESMC_DATA_PORT)) { |
5874583d | 272 | pr_warn("%s: write data fail\n", key); |
6f2fad74 | 273 | return -EIO; |
5874583d | 274 | } |
6f2fad74 NB |
275 | } |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
5874583d HR |
280 | static int read_register_count(unsigned int *count) |
281 | { | |
282 | __be32 be; | |
283 | int ret; | |
284 | ||
285 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
286 | if (ret) | |
287 | return ret; | |
288 | ||
289 | *count = be32_to_cpu(be); | |
290 | return 0; | |
291 | } | |
292 | ||
6f2fad74 | 293 | /* |
5874583d HR |
294 | * Serialized I/O |
295 | * | |
296 | * Returns zero on success or a negative error on failure. | |
297 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 298 | */ |
5874583d HR |
299 | |
300 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
301 | u8 *buf, u8 len) | |
6f2fad74 | 302 | { |
5874583d | 303 | int ret; |
6f2fad74 | 304 | |
5874583d HR |
305 | if (entry->len != len) |
306 | return -EINVAL; | |
307 | mutex_lock(&smcreg.mutex); | |
308 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
309 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 310 | |
5874583d HR |
311 | return ret; |
312 | } | |
313 | ||
314 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
315 | const u8 *buf, u8 len) | |
316 | { | |
317 | int ret; | |
318 | ||
319 | if (entry->len != len) | |
320 | return -EINVAL; | |
321 | mutex_lock(&smcreg.mutex); | |
322 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
323 | mutex_unlock(&smcreg.mutex); | |
324 | return ret; | |
325 | } | |
326 | ||
327 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
328 | { | |
329 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
330 | u8 key[4], info[6]; | |
331 | __be32 be; | |
332 | int ret = 0; | |
333 | ||
334 | if (cache->valid) | |
335 | return cache; | |
336 | ||
337 | mutex_lock(&smcreg.mutex); | |
338 | ||
339 | if (cache->valid) | |
340 | goto out; | |
341 | be = cpu_to_be32(index); | |
342 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
343 | if (ret) | |
344 | goto out; | |
345 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
346 | if (ret) | |
347 | goto out; | |
348 | ||
349 | memcpy(cache->key, key, 4); | |
350 | cache->len = info[0]; | |
351 | memcpy(cache->type, &info[1], 4); | |
352 | cache->flags = info[5]; | |
353 | cache->valid = 1; | |
354 | ||
355 | out: | |
356 | mutex_unlock(&smcreg.mutex); | |
357 | if (ret) | |
358 | return ERR_PTR(ret); | |
359 | return cache; | |
360 | } | |
361 | ||
362 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
363 | { | |
364 | int begin = 0, end = smcreg.key_count; | |
365 | const struct applesmc_entry *entry; | |
366 | ||
367 | while (begin != end) { | |
368 | int middle = begin + (end - begin) / 2; | |
369 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
370 | if (IS_ERR(entry)) { |
371 | *lo = 0; | |
5874583d | 372 | return PTR_ERR(entry); |
0fc86eca | 373 | } |
5874583d HR |
374 | if (strcmp(entry->key, key) < 0) |
375 | begin = middle + 1; | |
376 | else | |
377 | end = middle; | |
6f2fad74 NB |
378 | } |
379 | ||
5874583d HR |
380 | *lo = begin; |
381 | return 0; | |
382 | } | |
6f2fad74 | 383 | |
5874583d HR |
384 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
385 | { | |
386 | int begin = 0, end = smcreg.key_count; | |
387 | const struct applesmc_entry *entry; | |
388 | ||
389 | while (begin != end) { | |
390 | int middle = begin + (end - begin) / 2; | |
391 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
392 | if (IS_ERR(entry)) { |
393 | *hi = smcreg.key_count; | |
5874583d | 394 | return PTR_ERR(entry); |
0fc86eca | 395 | } |
5874583d HR |
396 | if (strcmp(key, entry->key) < 0) |
397 | end = middle; | |
398 | else | |
399 | begin = middle + 1; | |
6f2fad74 | 400 | } |
6f2fad74 | 401 | |
5874583d | 402 | *hi = begin; |
6f2fad74 NB |
403 | return 0; |
404 | } | |
405 | ||
5874583d | 406 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 407 | { |
5874583d HR |
408 | int begin, end; |
409 | int ret; | |
6f2fad74 | 410 | |
5874583d HR |
411 | ret = applesmc_get_lower_bound(&begin, key); |
412 | if (ret) | |
413 | return ERR_PTR(ret); | |
414 | ret = applesmc_get_upper_bound(&end, key); | |
415 | if (ret) | |
416 | return ERR_PTR(ret); | |
417 | if (end - begin != 1) | |
418 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 419 | |
5874583d HR |
420 | return applesmc_get_entry_by_index(begin); |
421 | } | |
6f2fad74 | 422 | |
5874583d HR |
423 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
424 | { | |
425 | const struct applesmc_entry *entry; | |
6f2fad74 | 426 | |
5874583d HR |
427 | entry = applesmc_get_entry_by_key(key); |
428 | if (IS_ERR(entry)) | |
429 | return PTR_ERR(entry); | |
6f2fad74 | 430 | |
5874583d HR |
431 | return applesmc_read_entry(entry, buffer, len); |
432 | } | |
433 | ||
434 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
435 | { | |
436 | const struct applesmc_entry *entry; | |
437 | ||
438 | entry = applesmc_get_entry_by_key(key); | |
439 | if (IS_ERR(entry)) | |
440 | return PTR_ERR(entry); | |
441 | ||
442 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
443 | } |
444 | ||
40ef06f1 HR |
445 | static int applesmc_has_key(const char *key, bool *value) |
446 | { | |
447 | const struct applesmc_entry *entry; | |
448 | ||
449 | entry = applesmc_get_entry_by_key(key); | |
450 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
451 | return PTR_ERR(entry); | |
452 | ||
453 | *value = !IS_ERR(entry); | |
454 | return 0; | |
455 | } | |
456 | ||
6f2fad74 | 457 | /* |
edf48f3a | 458 | * applesmc_read_s16 - Read 16-bit signed big endian register |
6f2fad74 | 459 | */ |
edf48f3a | 460 | static int applesmc_read_s16(const char *key, s16 *value) |
6f2fad74 NB |
461 | { |
462 | u8 buffer[2]; | |
463 | int ret; | |
464 | ||
edf48f3a HR |
465 | ret = applesmc_read_key(key, buffer, 2); |
466 | if (ret) | |
467 | return ret; | |
6f2fad74 NB |
468 | |
469 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
edf48f3a | 470 | return 0; |
6f2fad74 NB |
471 | } |
472 | ||
473 | /* | |
2344cd0c | 474 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 475 | */ |
2344cd0c | 476 | static void applesmc_device_init(void) |
6f2fad74 | 477 | { |
2344cd0c | 478 | int total; |
6f2fad74 NB |
479 | u8 buffer[2]; |
480 | ||
40ef06f1 | 481 | if (!smcreg.has_accelerometer) |
2344cd0c | 482 | return; |
6f2fad74 | 483 | |
6f2fad74 | 484 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 485 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 486 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 487 | return; |
6f2fad74 NB |
488 | buffer[0] = 0xe0; |
489 | buffer[1] = 0x00; | |
490 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
491 | msleep(INIT_WAIT_MSECS); | |
492 | } | |
493 | ||
1ee7c71b | 494 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
495 | } |
496 | ||
e30bca12 HR |
497 | static int applesmc_init_index(struct applesmc_registers *s) |
498 | { | |
499 | const struct applesmc_entry *entry; | |
500 | unsigned int i; | |
501 | ||
502 | if (s->index) | |
503 | return 0; | |
504 | ||
505 | s->index = kcalloc(s->temp_count, sizeof(s->index[0]), GFP_KERNEL); | |
506 | if (!s->index) | |
507 | return -ENOMEM; | |
508 | ||
509 | for (i = s->temp_begin; i < s->temp_end; i++) { | |
510 | entry = applesmc_get_entry_by_index(i); | |
511 | if (IS_ERR(entry)) | |
512 | continue; | |
513 | if (strcmp(entry->type, TEMP_SENSOR_TYPE)) | |
514 | continue; | |
515 | s->index[s->index_count++] = entry->key; | |
516 | } | |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
5874583d HR |
521 | /* |
522 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
523 | */ | |
524 | static int applesmc_init_smcreg_try(void) | |
525 | { | |
526 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 527 | bool left_light_sensor, right_light_sensor; |
3eba2bf7 | 528 | u8 tmp[1]; |
5874583d HR |
529 | int ret; |
530 | ||
531 | if (s->init_complete) | |
532 | return 0; | |
533 | ||
534 | ret = read_register_count(&s->key_count); | |
535 | if (ret) | |
536 | return ret; | |
537 | ||
538 | if (!s->cache) | |
539 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
540 | if (!s->cache) | |
541 | return -ENOMEM; | |
542 | ||
3eba2bf7 HR |
543 | ret = applesmc_read_key(FANS_COUNT, tmp, 1); |
544 | if (ret) | |
545 | return ret; | |
546 | s->fan_count = tmp[0]; | |
547 | ||
9792dadf HR |
548 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
549 | if (ret) | |
550 | return ret; | |
551 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
552 | if (ret) | |
553 | return ret; | |
554 | s->temp_count = s->temp_end - s->temp_begin; | |
555 | ||
e30bca12 HR |
556 | ret = applesmc_init_index(s); |
557 | if (ret) | |
558 | return ret; | |
559 | ||
40ef06f1 HR |
560 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
561 | if (ret) | |
562 | return ret; | |
563 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
564 | if (ret) | |
565 | return ret; | |
566 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
567 | if (ret) | |
568 | return ret; | |
569 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
570 | if (ret) | |
571 | return ret; | |
572 | ||
573 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
574 | s->init_complete = true; |
575 | ||
e30bca12 HR |
576 | pr_info("key=%d fan=%d temp=%d index=%d acc=%d lux=%d kbd=%d\n", |
577 | s->key_count, s->fan_count, s->temp_count, s->index_count, | |
40ef06f1 HR |
578 | s->has_accelerometer, |
579 | s->num_light_sensors, | |
580 | s->has_key_backlight); | |
5874583d HR |
581 | |
582 | return 0; | |
583 | } | |
584 | ||
e30bca12 HR |
585 | static void applesmc_destroy_smcreg(void) |
586 | { | |
587 | kfree(smcreg.index); | |
588 | smcreg.index = NULL; | |
589 | kfree(smcreg.cache); | |
590 | smcreg.cache = NULL; | |
591 | smcreg.init_complete = false; | |
592 | } | |
593 | ||
5874583d HR |
594 | /* |
595 | * applesmc_init_smcreg - Initialize register cache. | |
596 | * | |
597 | * Retries until initialization is successful, or the operation times out. | |
598 | * | |
599 | */ | |
600 | static int applesmc_init_smcreg(void) | |
601 | { | |
602 | int ms, ret; | |
603 | ||
604 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
605 | ret = applesmc_init_smcreg_try(); | |
606 | if (!ret) { | |
607 | if (ms) | |
608 | pr_info("init_smcreg() took %d ms\n", ms); | |
609 | return 0; | |
610 | } | |
611 | msleep(INIT_WAIT_MSECS); | |
612 | } | |
613 | ||
e30bca12 | 614 | applesmc_destroy_smcreg(); |
5874583d HR |
615 | |
616 | return ret; | |
617 | } | |
618 | ||
6f2fad74 NB |
619 | /* Device model stuff */ |
620 | static int applesmc_probe(struct platform_device *dev) | |
621 | { | |
5874583d HR |
622 | int ret; |
623 | ||
624 | ret = applesmc_init_smcreg(); | |
625 | if (ret) | |
626 | return ret; | |
627 | ||
2344cd0c | 628 | applesmc_device_init(); |
6f2fad74 | 629 | |
6f2fad74 NB |
630 | return 0; |
631 | } | |
632 | ||
a976f150 HR |
633 | /* Synchronize device with memorized backlight state */ |
634 | static int applesmc_pm_resume(struct device *dev) | |
635 | { | |
40ef06f1 | 636 | if (smcreg.has_key_backlight) |
a976f150 | 637 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
638 | return 0; |
639 | } | |
640 | ||
641 | /* Reinitialize device on resume from hibernation */ | |
642 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 643 | { |
2344cd0c | 644 | applesmc_device_init(); |
a976f150 | 645 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
646 | } |
647 | ||
47145210 | 648 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
649 | .resume = applesmc_pm_resume, |
650 | .restore = applesmc_pm_restore, | |
651 | }; | |
652 | ||
6f2fad74 NB |
653 | static struct platform_driver applesmc_driver = { |
654 | .probe = applesmc_probe, | |
6f2fad74 NB |
655 | .driver = { |
656 | .name = "applesmc", | |
657 | .owner = THIS_MODULE, | |
a976f150 | 658 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
659 | }, |
660 | }; | |
661 | ||
662 | /* | |
663 | * applesmc_calibrate - Set our "resting" values. Callers must | |
664 | * hold applesmc_lock. | |
665 | */ | |
666 | static void applesmc_calibrate(void) | |
667 | { | |
edf48f3a HR |
668 | applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x); |
669 | applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y); | |
6f2fad74 NB |
670 | rest_x = -rest_x; |
671 | } | |
672 | ||
d5cf2b99 | 673 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 674 | { |
d5cf2b99 | 675 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
676 | s16 x, y; |
677 | ||
edf48f3a | 678 | if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x)) |
5874583d | 679 | return; |
edf48f3a | 680 | if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y)) |
5874583d | 681 | return; |
6f2fad74 NB |
682 | |
683 | x = -x; | |
d5cf2b99 DT |
684 | input_report_abs(idev, ABS_X, x - rest_x); |
685 | input_report_abs(idev, ABS_Y, y - rest_y); | |
686 | input_sync(idev); | |
6f2fad74 NB |
687 | } |
688 | ||
689 | /* Sysfs Files */ | |
690 | ||
fa74419b NB |
691 | static ssize_t applesmc_name_show(struct device *dev, |
692 | struct device_attribute *attr, char *buf) | |
693 | { | |
694 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
695 | } | |
696 | ||
6f2fad74 NB |
697 | static ssize_t applesmc_position_show(struct device *dev, |
698 | struct device_attribute *attr, char *buf) | |
699 | { | |
700 | int ret; | |
701 | s16 x, y, z; | |
702 | ||
edf48f3a | 703 | ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x); |
6f2fad74 NB |
704 | if (ret) |
705 | goto out; | |
edf48f3a | 706 | ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y); |
6f2fad74 NB |
707 | if (ret) |
708 | goto out; | |
edf48f3a | 709 | ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z); |
6f2fad74 NB |
710 | if (ret) |
711 | goto out; | |
712 | ||
713 | out: | |
6f2fad74 NB |
714 | if (ret) |
715 | return ret; | |
716 | else | |
717 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
718 | } | |
719 | ||
720 | static ssize_t applesmc_light_show(struct device *dev, | |
721 | struct device_attribute *attr, char *sysfsbuf) | |
722 | { | |
5874583d | 723 | const struct applesmc_entry *entry; |
8bd1a12a | 724 | static int data_length; |
6f2fad74 NB |
725 | int ret; |
726 | u8 left = 0, right = 0; | |
5874583d | 727 | u8 buffer[10]; |
6f2fad74 | 728 | |
8bd1a12a | 729 | if (!data_length) { |
5874583d HR |
730 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
731 | if (IS_ERR(entry)) | |
732 | return PTR_ERR(entry); | |
733 | if (entry->len > 10) | |
734 | return -ENXIO; | |
735 | data_length = entry->len; | |
1ee7c71b | 736 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
737 | } |
738 | ||
739 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
740 | /* newer macbooks report a single 10-bit bigendian value */ |
741 | if (data_length == 10) { | |
742 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
743 | goto out; | |
744 | } | |
6f2fad74 NB |
745 | left = buffer[2]; |
746 | if (ret) | |
747 | goto out; | |
8bd1a12a | 748 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
749 | right = buffer[2]; |
750 | ||
751 | out: | |
6f2fad74 NB |
752 | if (ret) |
753 | return ret; | |
754 | else | |
755 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
756 | } | |
757 | ||
fa5575cf AM |
758 | /* Displays sensor key as label */ |
759 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
760 | struct device_attribute *devattr, char *sysfsbuf) | |
761 | { | |
e30bca12 | 762 | const char *key = smcreg.index[to_index(devattr)]; |
fa5575cf | 763 | |
e30bca12 | 764 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); |
fa5575cf AM |
765 | } |
766 | ||
6f2fad74 NB |
767 | /* Displays degree Celsius * 1000 */ |
768 | static ssize_t applesmc_show_temperature(struct device *dev, | |
769 | struct device_attribute *devattr, char *sysfsbuf) | |
770 | { | |
e30bca12 | 771 | const char *key = smcreg.index[to_index(devattr)]; |
6f2fad74 | 772 | int ret; |
b6e5122f HR |
773 | s16 value; |
774 | int temp; | |
6f2fad74 | 775 | |
e30bca12 | 776 | ret = applesmc_read_s16(key, &value); |
6f2fad74 NB |
777 | if (ret) |
778 | return ret; | |
9792dadf | 779 | |
b6e5122f | 780 | temp = 250 * (value >> 6); |
9792dadf | 781 | |
b6e5122f | 782 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp); |
6f2fad74 NB |
783 | } |
784 | ||
785 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
786 | struct device_attribute *attr, char *sysfsbuf) | |
787 | { | |
788 | int ret; | |
789 | unsigned int speed = 0; | |
790 | char newkey[5]; | |
791 | u8 buffer[2]; | |
6f2fad74 | 792 | |
3eba2bf7 | 793 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 794 | |
6f2fad74 NB |
795 | ret = applesmc_read_key(newkey, buffer, 2); |
796 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
797 | ||
6f2fad74 NB |
798 | if (ret) |
799 | return ret; | |
800 | else | |
801 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
802 | } | |
803 | ||
804 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
805 | struct device_attribute *attr, | |
806 | const char *sysfsbuf, size_t count) | |
807 | { | |
808 | int ret; | |
2bfe8148 | 809 | unsigned long speed; |
6f2fad74 NB |
810 | char newkey[5]; |
811 | u8 buffer[2]; | |
6f2fad74 | 812 | |
179c4fdb | 813 | if (kstrtoul(sysfsbuf, 10, &speed) < 0 || speed >= 0x4000) |
2bfe8148 | 814 | return -EINVAL; /* Bigger than a 14-bit value */ |
6f2fad74 | 815 | |
3eba2bf7 | 816 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 817 | |
6f2fad74 NB |
818 | buffer[0] = (speed >> 6) & 0xff; |
819 | buffer[1] = (speed << 2) & 0xff; | |
820 | ret = applesmc_write_key(newkey, buffer, 2); | |
821 | ||
6f2fad74 NB |
822 | if (ret) |
823 | return ret; | |
824 | else | |
825 | return count; | |
826 | } | |
827 | ||
828 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
3eba2bf7 | 829 | struct device_attribute *attr, char *sysfsbuf) |
6f2fad74 NB |
830 | { |
831 | int ret; | |
832 | u16 manual = 0; | |
833 | u8 buffer[2]; | |
6f2fad74 | 834 | |
6f2fad74 | 835 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
3eba2bf7 | 836 | manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; |
6f2fad74 | 837 | |
6f2fad74 NB |
838 | if (ret) |
839 | return ret; | |
840 | else | |
841 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
842 | } | |
843 | ||
844 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
3eba2bf7 | 845 | struct device_attribute *attr, |
6f2fad74 NB |
846 | const char *sysfsbuf, size_t count) |
847 | { | |
848 | int ret; | |
849 | u8 buffer[2]; | |
2bfe8148 | 850 | unsigned long input; |
6f2fad74 | 851 | u16 val; |
6f2fad74 | 852 | |
179c4fdb | 853 | if (kstrtoul(sysfsbuf, 10, &input) < 0) |
2bfe8148 | 854 | return -EINVAL; |
6f2fad74 | 855 | |
6f2fad74 NB |
856 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
857 | val = (buffer[0] << 8 | buffer[1]); | |
858 | if (ret) | |
859 | goto out; | |
860 | ||
861 | if (input) | |
3eba2bf7 | 862 | val = val | (0x01 << to_index(attr)); |
6f2fad74 | 863 | else |
3eba2bf7 | 864 | val = val & ~(0x01 << to_index(attr)); |
6f2fad74 NB |
865 | |
866 | buffer[0] = (val >> 8) & 0xFF; | |
867 | buffer[1] = val & 0xFF; | |
868 | ||
869 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
870 | ||
871 | out: | |
6f2fad74 NB |
872 | if (ret) |
873 | return ret; | |
874 | else | |
875 | return count; | |
876 | } | |
877 | ||
878 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
879 | struct device_attribute *attr, char *sysfsbuf) | |
880 | { | |
881 | int ret; | |
882 | char newkey[5]; | |
883 | u8 buffer[17]; | |
6f2fad74 | 884 | |
3eba2bf7 | 885 | sprintf(newkey, FAN_ID_FMT, to_index(attr)); |
6f2fad74 | 886 | |
6f2fad74 NB |
887 | ret = applesmc_read_key(newkey, buffer, 16); |
888 | buffer[16] = 0; | |
889 | ||
6f2fad74 NB |
890 | if (ret) |
891 | return ret; | |
892 | else | |
893 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
894 | } | |
895 | ||
896 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
897 | struct device_attribute *attr, char *sysfsbuf) | |
898 | { | |
899 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
900 | } | |
901 | ||
902 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
903 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
904 | { | |
6f2fad74 | 905 | applesmc_calibrate(); |
6f2fad74 NB |
906 | |
907 | return count; | |
908 | } | |
909 | ||
6f2fad74 NB |
910 | static void applesmc_backlight_set(struct work_struct *work) |
911 | { | |
a976f150 | 912 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
913 | } |
914 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
915 | ||
916 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
917 | enum led_brightness value) | |
918 | { | |
919 | int ret; | |
920 | ||
a976f150 | 921 | backlight_state[0] = value; |
6f2fad74 NB |
922 | ret = queue_work(applesmc_led_wq, &backlight_work); |
923 | ||
924 | if (debug && (!ret)) | |
925 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
926 | } | |
927 | ||
928 | static ssize_t applesmc_key_count_show(struct device *dev, | |
929 | struct device_attribute *attr, char *sysfsbuf) | |
930 | { | |
931 | int ret; | |
932 | u8 buffer[4]; | |
933 | u32 count; | |
934 | ||
6f2fad74 NB |
935 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
936 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
937 | ((u32)buffer[2]<<8) + buffer[3]; | |
938 | ||
6f2fad74 NB |
939 | if (ret) |
940 | return ret; | |
941 | else | |
942 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
943 | } | |
944 | ||
945 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
946 | struct device_attribute *attr, char *sysfsbuf) | |
947 | { | |
5874583d | 948 | const struct applesmc_entry *entry; |
6f2fad74 NB |
949 | int ret; |
950 | ||
5874583d HR |
951 | entry = applesmc_get_entry_by_index(key_at_index); |
952 | if (IS_ERR(entry)) | |
953 | return PTR_ERR(entry); | |
954 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
955 | if (ret) | |
6f2fad74 | 956 | return ret; |
6f2fad74 | 957 | |
5874583d | 958 | return entry->len; |
6f2fad74 NB |
959 | } |
960 | ||
961 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
962 | struct device_attribute *attr, char *sysfsbuf) | |
963 | { | |
5874583d | 964 | const struct applesmc_entry *entry; |
6f2fad74 | 965 | |
5874583d HR |
966 | entry = applesmc_get_entry_by_index(key_at_index); |
967 | if (IS_ERR(entry)) | |
968 | return PTR_ERR(entry); | |
6f2fad74 | 969 | |
5874583d | 970 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
971 | } |
972 | ||
973 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
974 | struct device_attribute *attr, char *sysfsbuf) | |
975 | { | |
5874583d | 976 | const struct applesmc_entry *entry; |
6f2fad74 | 977 | |
5874583d HR |
978 | entry = applesmc_get_entry_by_index(key_at_index); |
979 | if (IS_ERR(entry)) | |
980 | return PTR_ERR(entry); | |
6f2fad74 | 981 | |
5874583d | 982 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
983 | } |
984 | ||
985 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
986 | struct device_attribute *attr, char *sysfsbuf) | |
987 | { | |
5874583d | 988 | const struct applesmc_entry *entry; |
6f2fad74 | 989 | |
5874583d HR |
990 | entry = applesmc_get_entry_by_index(key_at_index); |
991 | if (IS_ERR(entry)) | |
992 | return PTR_ERR(entry); | |
6f2fad74 | 993 | |
5874583d | 994 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
995 | } |
996 | ||
997 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
998 | struct device_attribute *attr, char *sysfsbuf) | |
999 | { | |
1000 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
1001 | } | |
1002 | ||
1003 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
1004 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
1005 | { | |
5874583d | 1006 | unsigned long newkey; |
6f2fad74 | 1007 | |
179c4fdb | 1008 | if (kstrtoul(sysfsbuf, 10, &newkey) < 0 |
5874583d HR |
1009 | || newkey >= smcreg.key_count) |
1010 | return -EINVAL; | |
6f2fad74 | 1011 | |
5874583d | 1012 | key_at_index = newkey; |
6f2fad74 NB |
1013 | return count; |
1014 | } | |
1015 | ||
1016 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 1017 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
1018 | .default_trigger = "nand-disk", |
1019 | .brightness_set = applesmc_brightness_set, | |
1020 | }; | |
1021 | ||
0b0b5dff HR |
1022 | static struct applesmc_node_group info_group[] = { |
1023 | { "name", applesmc_name_show }, | |
1024 | { "key_count", applesmc_key_count_show }, | |
1025 | { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store }, | |
1026 | { "key_at_index_name", applesmc_key_at_index_name_show }, | |
1027 | { "key_at_index_type", applesmc_key_at_index_type_show }, | |
1028 | { "key_at_index_data_length", applesmc_key_at_index_data_length_show }, | |
1029 | { "key_at_index_data", applesmc_key_at_index_read_show }, | |
1030 | { } | |
6f2fad74 NB |
1031 | }; |
1032 | ||
0b0b5dff HR |
1033 | static struct applesmc_node_group accelerometer_group[] = { |
1034 | { "position", applesmc_position_show }, | |
1035 | { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store }, | |
1036 | { } | |
6f2fad74 NB |
1037 | }; |
1038 | ||
0b0b5dff HR |
1039 | static struct applesmc_node_group light_sensor_group[] = { |
1040 | { "light", applesmc_light_show }, | |
1041 | { } | |
1042 | }; | |
6f2fad74 | 1043 | |
3eba2bf7 HR |
1044 | static struct applesmc_node_group fan_group[] = { |
1045 | { "fan%d_label", applesmc_show_fan_position }, | |
1046 | { "fan%d_input", applesmc_show_fan_speed, NULL, 0 }, | |
1047 | { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 }, | |
1048 | { "fan%d_max", applesmc_show_fan_speed, NULL, 2 }, | |
1049 | { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 }, | |
1050 | { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 }, | |
1051 | { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual }, | |
1052 | { } | |
6f2fad74 NB |
1053 | }; |
1054 | ||
9792dadf HR |
1055 | static struct applesmc_node_group temp_group[] = { |
1056 | { "temp%d_label", applesmc_show_sensor_label }, | |
1057 | { "temp%d_input", applesmc_show_temperature }, | |
1058 | { } | |
fa5575cf AM |
1059 | }; |
1060 | ||
6f2fad74 NB |
1061 | /* Module stuff */ |
1062 | ||
9792dadf HR |
1063 | /* |
1064 | * applesmc_destroy_nodes - remove files and free associated memory | |
1065 | */ | |
1066 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1067 | { | |
1068 | struct applesmc_node_group *grp; | |
1069 | struct applesmc_dev_attr *node; | |
1070 | ||
1071 | for (grp = groups; grp->nodes; grp++) { | |
1072 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1073 | sysfs_remove_file(&pdev->dev.kobj, | |
1074 | &node->sda.dev_attr.attr); | |
1075 | kfree(grp->nodes); | |
1076 | grp->nodes = NULL; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | /* | |
1081 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1082 | */ | |
1083 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1084 | { | |
1085 | struct applesmc_node_group *grp; | |
1086 | struct applesmc_dev_attr *node; | |
1087 | struct attribute *attr; | |
1088 | int ret, i; | |
1089 | ||
1090 | for (grp = groups; grp->format; grp++) { | |
1091 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1092 | if (!grp->nodes) { | |
1093 | ret = -ENOMEM; | |
1094 | goto out; | |
1095 | } | |
1096 | for (i = 0; i < num; i++) { | |
1097 | node = &grp->nodes[i]; | |
1098 | sprintf(node->name, grp->format, i + 1); | |
3eba2bf7 | 1099 | node->sda.index = (grp->option << 16) | (i & 0xffff); |
9792dadf HR |
1100 | node->sda.dev_attr.show = grp->show; |
1101 | node->sda.dev_attr.store = grp->store; | |
1102 | attr = &node->sda.dev_attr.attr; | |
9d1f8a40 | 1103 | sysfs_attr_init(attr); |
9792dadf HR |
1104 | attr->name = node->name; |
1105 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1106 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1107 | if (ret) { | |
1108 | attr->name = NULL; | |
1109 | goto out; | |
1110 | } | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | return 0; | |
1115 | out: | |
1116 | applesmc_destroy_nodes(groups); | |
1117 | return ret; | |
1118 | } | |
1119 | ||
6f2fad74 NB |
1120 | /* Create accelerometer ressources */ |
1121 | static int applesmc_create_accelerometer(void) | |
1122 | { | |
d5cf2b99 | 1123 | struct input_dev *idev; |
6f2fad74 NB |
1124 | int ret; |
1125 | ||
0b0b5dff HR |
1126 | if (!smcreg.has_accelerometer) |
1127 | return 0; | |
1128 | ||
1129 | ret = applesmc_create_nodes(accelerometer_group, 1); | |
6f2fad74 NB |
1130 | if (ret) |
1131 | goto out; | |
1132 | ||
d5cf2b99 | 1133 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1134 | if (!applesmc_idev) { |
1135 | ret = -ENOMEM; | |
1136 | goto out_sysfs; | |
1137 | } | |
1138 | ||
d5cf2b99 DT |
1139 | applesmc_idev->poll = applesmc_idev_poll; |
1140 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1141 | ||
6f2fad74 NB |
1142 | /* initial calibrate for the input device */ |
1143 | applesmc_calibrate(); | |
1144 | ||
d5cf2b99 DT |
1145 | /* initialize the input device */ |
1146 | idev = applesmc_idev->input; | |
1147 | idev->name = "applesmc"; | |
1148 | idev->id.bustype = BUS_HOST; | |
1149 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1150 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1151 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1152 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1153 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1154 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1155 | ||
d5cf2b99 | 1156 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1157 | if (ret) |
1158 | goto out_idev; | |
1159 | ||
6f2fad74 NB |
1160 | return 0; |
1161 | ||
1162 | out_idev: | |
d5cf2b99 | 1163 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1164 | |
1165 | out_sysfs: | |
0b0b5dff | 1166 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 NB |
1167 | |
1168 | out: | |
1ee7c71b | 1169 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1170 | return ret; |
1171 | } | |
1172 | ||
1173 | /* Release all ressources used by the accelerometer */ | |
1174 | static void applesmc_release_accelerometer(void) | |
1175 | { | |
0b0b5dff HR |
1176 | if (!smcreg.has_accelerometer) |
1177 | return; | |
d5cf2b99 DT |
1178 | input_unregister_polled_device(applesmc_idev); |
1179 | input_free_polled_device(applesmc_idev); | |
0b0b5dff | 1180 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 | 1181 | } |
0b0b5dff HR |
1182 | |
1183 | static int applesmc_create_light_sensor(void) | |
1184 | { | |
1185 | if (!smcreg.num_light_sensors) | |
1186 | return 0; | |
1187 | return applesmc_create_nodes(light_sensor_group, 1); | |
1188 | } | |
1189 | ||
1190 | static void applesmc_release_light_sensor(void) | |
1191 | { | |
1192 | if (!smcreg.num_light_sensors) | |
1193 | return; | |
1194 | applesmc_destroy_nodes(light_sensor_group); | |
1195 | } | |
1196 | ||
1197 | static int applesmc_create_key_backlight(void) | |
1198 | { | |
1199 | if (!smcreg.has_key_backlight) | |
1200 | return 0; | |
1201 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1202 | if (!applesmc_led_wq) | |
1203 | return -ENOMEM; | |
1204 | return led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1205 | } | |
1206 | ||
1207 | static void applesmc_release_key_backlight(void) | |
1208 | { | |
1209 | if (!smcreg.has_key_backlight) | |
1210 | return; | |
1211 | led_classdev_unregister(&applesmc_backlight); | |
1212 | destroy_workqueue(applesmc_led_wq); | |
1213 | } | |
1214 | ||
40ef06f1 HR |
1215 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1216 | { | |
1217 | return 1; | |
1218 | } | |
6f2fad74 | 1219 | |
85ebfd3e GR |
1220 | /* |
1221 | * Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1222 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". | |
1223 | */ | |
6f2fad74 | 1224 | static __initdata struct dmi_system_id applesmc_whitelist[] = { |
f5274c97 HR |
1225 | { applesmc_dmi_match, "Apple MacBook Air", { |
1226 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1227 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1228 | }, |
6f2fad74 | 1229 | { applesmc_dmi_match, "Apple MacBook Pro", { |
2bfe8148 GR |
1230 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1231 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro") }, | |
40ef06f1 | 1232 | }, |
cd19ba13 | 1233 | { applesmc_dmi_match, "Apple MacBook", { |
2bfe8148 GR |
1234 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1235 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBook") }, | |
40ef06f1 | 1236 | }, |
6f2fad74 | 1237 | { applesmc_dmi_match, "Apple Macmini", { |
2bfe8148 GR |
1238 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1239 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") }, | |
40ef06f1 | 1240 | }, |
45a3a36b HR |
1241 | { applesmc_dmi_match, "Apple MacPro", { |
1242 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1243 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1244 | }, |
9f86f28d | 1245 | { applesmc_dmi_match, "Apple iMac", { |
2bfe8148 GR |
1246 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1247 | DMI_MATCH(DMI_PRODUCT_NAME, "iMac") }, | |
40ef06f1 | 1248 | }, |
6f2fad74 NB |
1249 | { .ident = NULL } |
1250 | }; | |
1251 | ||
1252 | static int __init applesmc_init(void) | |
1253 | { | |
1254 | int ret; | |
6f2fad74 | 1255 | |
6f2fad74 | 1256 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1257 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1258 | ret = -ENODEV; |
1259 | goto out; | |
1260 | } | |
1261 | ||
1262 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1263 | "applesmc")) { | |
1264 | ret = -ENXIO; | |
1265 | goto out; | |
1266 | } | |
1267 | ||
1268 | ret = platform_driver_register(&applesmc_driver); | |
1269 | if (ret) | |
1270 | goto out_region; | |
1271 | ||
ddfbf2af JD |
1272 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1273 | NULL, 0); | |
6f2fad74 NB |
1274 | if (IS_ERR(pdev)) { |
1275 | ret = PTR_ERR(pdev); | |
1276 | goto out_driver; | |
1277 | } | |
1278 | ||
5874583d HR |
1279 | /* create register cache */ |
1280 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1281 | if (ret) |
1282 | goto out_device; | |
fa74419b | 1283 | |
0b0b5dff | 1284 | ret = applesmc_create_nodes(info_group, 1); |
5874583d HR |
1285 | if (ret) |
1286 | goto out_smcreg; | |
1287 | ||
3eba2bf7 HR |
1288 | ret = applesmc_create_nodes(fan_group, smcreg.fan_count); |
1289 | if (ret) | |
1290 | goto out_info; | |
6f2fad74 | 1291 | |
e30bca12 | 1292 | ret = applesmc_create_nodes(temp_group, smcreg.index_count); |
9792dadf HR |
1293 | if (ret) |
1294 | goto out_fans; | |
6f2fad74 | 1295 | |
0b0b5dff HR |
1296 | ret = applesmc_create_accelerometer(); |
1297 | if (ret) | |
1298 | goto out_temperature; | |
6f2fad74 | 1299 | |
0b0b5dff HR |
1300 | ret = applesmc_create_light_sensor(); |
1301 | if (ret) | |
1302 | goto out_accelerometer; | |
6f2fad74 | 1303 | |
0b0b5dff HR |
1304 | ret = applesmc_create_key_backlight(); |
1305 | if (ret) | |
1306 | goto out_light_sysfs; | |
6f2fad74 | 1307 | |
1beeffe4 TJ |
1308 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1309 | if (IS_ERR(hwmon_dev)) { | |
1310 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1311 | goto out_light_ledclass; |
1312 | } | |
1313 | ||
6f2fad74 NB |
1314 | return 0; |
1315 | ||
1316 | out_light_ledclass: | |
0b0b5dff | 1317 | applesmc_release_key_backlight(); |
6f2fad74 | 1318 | out_light_sysfs: |
0b0b5dff | 1319 | applesmc_release_light_sensor(); |
6f2fad74 | 1320 | out_accelerometer: |
0b0b5dff | 1321 | applesmc_release_accelerometer(); |
6f2fad74 | 1322 | out_temperature: |
9792dadf | 1323 | applesmc_destroy_nodes(temp_group); |
0559a538 | 1324 | out_fans: |
3eba2bf7 HR |
1325 | applesmc_destroy_nodes(fan_group); |
1326 | out_info: | |
0b0b5dff | 1327 | applesmc_destroy_nodes(info_group); |
5874583d HR |
1328 | out_smcreg: |
1329 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1330 | out_device: |
1331 | platform_device_unregister(pdev); | |
1332 | out_driver: | |
1333 | platform_driver_unregister(&applesmc_driver); | |
1334 | out_region: | |
1335 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1336 | out: | |
1ee7c71b | 1337 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1338 | return ret; |
1339 | } | |
1340 | ||
1341 | static void __exit applesmc_exit(void) | |
1342 | { | |
1beeffe4 | 1343 | hwmon_device_unregister(hwmon_dev); |
0b0b5dff HR |
1344 | applesmc_release_key_backlight(); |
1345 | applesmc_release_light_sensor(); | |
1346 | applesmc_release_accelerometer(); | |
9792dadf | 1347 | applesmc_destroy_nodes(temp_group); |
3eba2bf7 | 1348 | applesmc_destroy_nodes(fan_group); |
0b0b5dff | 1349 | applesmc_destroy_nodes(info_group); |
5874583d | 1350 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1351 | platform_device_unregister(pdev); |
1352 | platform_driver_unregister(&applesmc_driver); | |
1353 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
6f2fad74 NB |
1354 | } |
1355 | ||
1356 | module_init(applesmc_init); | |
1357 | module_exit(applesmc_exit); | |
1358 | ||
1359 | MODULE_AUTHOR("Nicolas Boichat"); | |
1360 | MODULE_DESCRIPTION("Apple SMC"); | |
1361 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1362 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |