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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> | |
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> | |
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. */ |
a332bf9a | 57 | #define APPLESMC_MIN_WAIT 0x0010 |
8c9398d1 HR |
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 | |
b6e5122f HR |
83 | #define TEMP_SENSOR_TYPE "sp78" |
84 | ||
6f2fad74 | 85 | /* List of keys used to read/write fan speeds */ |
3eba2bf7 HR |
86 | static const char *const fan_speed_fmt[] = { |
87 | "F%dAc", /* actual speed */ | |
88 | "F%dMn", /* minimum speed (rw) */ | |
89 | "F%dMx", /* maximum speed */ | |
90 | "F%dSf", /* safe speed - not all models */ | |
91 | "F%dTg", /* target speed (manual: rw) */ | |
6f2fad74 NB |
92 | }; |
93 | ||
94 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
95 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
96 | ||
d5cf2b99 | 97 | #define APPLESMC_POLL_INTERVAL 50 /* msecs */ |
6f2fad74 NB |
98 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ |
99 | #define APPLESMC_INPUT_FLAT 4 | |
100 | ||
3eba2bf7 HR |
101 | #define to_index(attr) (to_sensor_dev_attr(attr)->index & 0xffff) |
102 | #define to_option(attr) (to_sensor_dev_attr(attr)->index >> 16) | |
9792dadf | 103 | |
9792dadf HR |
104 | /* Dynamic device node attributes */ |
105 | struct applesmc_dev_attr { | |
106 | struct sensor_device_attribute sda; /* hwmon attributes */ | |
107 | char name[32]; /* room for node file name */ | |
108 | }; | |
109 | ||
110 | /* Dynamic device node group */ | |
111 | struct applesmc_node_group { | |
112 | char *format; /* format string */ | |
113 | void *show; /* show function */ | |
114 | void *store; /* store function */ | |
3eba2bf7 | 115 | int option; /* function argument */ |
9792dadf HR |
116 | struct applesmc_dev_attr *nodes; /* dynamic node array */ |
117 | }; | |
118 | ||
5874583d HR |
119 | /* AppleSMC entry - cached register information */ |
120 | struct applesmc_entry { | |
121 | char key[5]; /* four-letter key code */ | |
122 | u8 valid; /* set when entry is successfully read once */ | |
123 | u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */ | |
124 | char type[5]; /* four-letter type code */ | |
125 | u8 flags; /* 0x10: func; 0x40: write; 0x80: read */ | |
126 | }; | |
127 | ||
128 | /* Register lookup and registers common to all SMCs */ | |
129 | static struct applesmc_registers { | |
130 | struct mutex mutex; /* register read/write mutex */ | |
131 | unsigned int key_count; /* number of SMC registers */ | |
3eba2bf7 | 132 | unsigned int fan_count; /* number of fans */ |
9792dadf HR |
133 | unsigned int temp_count; /* number of temperature registers */ |
134 | unsigned int temp_begin; /* temperature lower index bound */ | |
135 | unsigned int temp_end; /* temperature upper index bound */ | |
e30bca12 | 136 | unsigned int index_count; /* size of temperature index array */ |
40ef06f1 HR |
137 | int num_light_sensors; /* number of light sensors */ |
138 | bool has_accelerometer; /* has motion sensor */ | |
139 | bool has_key_backlight; /* has keyboard backlight */ | |
5874583d HR |
140 | bool init_complete; /* true when fully initialized */ |
141 | struct applesmc_entry *cache; /* cached key entries */ | |
e30bca12 | 142 | const char **index; /* temperature key index */ |
5874583d HR |
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); | |
2bfe8148 | 177 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) |
6f2fad74 | 178 | return 0; |
6f2fad74 NB |
179 | } |
180 | ||
6f2fad74 NB |
181 | return -EIO; |
182 | } | |
183 | ||
84d2d7f2 HR |
184 | /* |
185 | * special treatment of command port - on newer macbooks, it seems necessary | |
186 | * to resend the command byte before polling the status again. Callers must | |
187 | * hold applesmc_lock. | |
188 | */ | |
189 | static int send_command(u8 cmd) | |
190 | { | |
8c9398d1 HR |
191 | int us; |
192 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { | |
84d2d7f2 | 193 | outb(cmd, APPLESMC_CMD_PORT); |
8c9398d1 | 194 | udelay(us); |
84d2d7f2 HR |
195 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c) |
196 | return 0; | |
84d2d7f2 | 197 | } |
84d2d7f2 HR |
198 | return -EIO; |
199 | } | |
200 | ||
5874583d | 201 | static int send_argument(const char *key) |
6f2fad74 NB |
202 | { |
203 | int i; | |
204 | ||
6f2fad74 NB |
205 | for (i = 0; i < 4; i++) { |
206 | outb(key[i], APPLESMC_DATA_PORT); | |
207 | if (__wait_status(0x04)) | |
208 | return -EIO; | |
209 | } | |
5874583d HR |
210 | return 0; |
211 | } | |
212 | ||
213 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
214 | { | |
215 | int i; | |
216 | ||
217 | if (send_command(cmd) || send_argument(key)) { | |
ac852edb | 218 | pr_warn("%.4s: read arg fail\n", key); |
5874583d HR |
219 | return -EIO; |
220 | } | |
6f2fad74 NB |
221 | |
222 | outb(len, APPLESMC_DATA_PORT); | |
6f2fad74 NB |
223 | |
224 | for (i = 0; i < len; i++) { | |
5874583d | 225 | if (__wait_status(0x05)) { |
ac852edb | 226 | pr_warn("%.4s: read data fail\n", key); |
6f2fad74 | 227 | return -EIO; |
5874583d | 228 | } |
6f2fad74 | 229 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 230 | } |
6f2fad74 NB |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
5874583d | 235 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
236 | { |
237 | int i; | |
238 | ||
5874583d HR |
239 | if (send_command(cmd) || send_argument(key)) { |
240 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 241 | return -EIO; |
6f2fad74 NB |
242 | } |
243 | ||
244 | outb(len, APPLESMC_DATA_PORT); | |
245 | ||
246 | for (i = 0; i < len; i++) { | |
5874583d HR |
247 | if (__wait_status(0x04)) { |
248 | pr_warn("%s: write data fail\n", key); | |
6f2fad74 | 249 | return -EIO; |
5874583d | 250 | } |
6f2fad74 NB |
251 | outb(buffer[i], APPLESMC_DATA_PORT); |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
5874583d HR |
257 | static int read_register_count(unsigned int *count) |
258 | { | |
259 | __be32 be; | |
260 | int ret; | |
261 | ||
262 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
263 | if (ret) | |
264 | return ret; | |
265 | ||
266 | *count = be32_to_cpu(be); | |
267 | return 0; | |
268 | } | |
269 | ||
6f2fad74 | 270 | /* |
5874583d HR |
271 | * Serialized I/O |
272 | * | |
273 | * Returns zero on success or a negative error on failure. | |
274 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 275 | */ |
5874583d HR |
276 | |
277 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
278 | u8 *buf, u8 len) | |
6f2fad74 | 279 | { |
5874583d | 280 | int ret; |
6f2fad74 | 281 | |
5874583d HR |
282 | if (entry->len != len) |
283 | return -EINVAL; | |
284 | mutex_lock(&smcreg.mutex); | |
285 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
286 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 287 | |
5874583d HR |
288 | return ret; |
289 | } | |
290 | ||
291 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
292 | const u8 *buf, u8 len) | |
293 | { | |
294 | int ret; | |
295 | ||
296 | if (entry->len != len) | |
297 | return -EINVAL; | |
298 | mutex_lock(&smcreg.mutex); | |
299 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
300 | mutex_unlock(&smcreg.mutex); | |
301 | return ret; | |
302 | } | |
303 | ||
304 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
305 | { | |
306 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
307 | u8 key[4], info[6]; | |
308 | __be32 be; | |
309 | int ret = 0; | |
310 | ||
311 | if (cache->valid) | |
312 | return cache; | |
313 | ||
314 | mutex_lock(&smcreg.mutex); | |
315 | ||
316 | if (cache->valid) | |
317 | goto out; | |
318 | be = cpu_to_be32(index); | |
319 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
320 | if (ret) | |
321 | goto out; | |
322 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
323 | if (ret) | |
324 | goto out; | |
325 | ||
326 | memcpy(cache->key, key, 4); | |
327 | cache->len = info[0]; | |
328 | memcpy(cache->type, &info[1], 4); | |
329 | cache->flags = info[5]; | |
330 | cache->valid = 1; | |
331 | ||
332 | out: | |
333 | mutex_unlock(&smcreg.mutex); | |
334 | if (ret) | |
335 | return ERR_PTR(ret); | |
336 | return cache; | |
337 | } | |
338 | ||
339 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
340 | { | |
341 | int begin = 0, end = smcreg.key_count; | |
342 | const struct applesmc_entry *entry; | |
343 | ||
344 | while (begin != end) { | |
345 | int middle = begin + (end - begin) / 2; | |
346 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
347 | if (IS_ERR(entry)) { |
348 | *lo = 0; | |
5874583d | 349 | return PTR_ERR(entry); |
0fc86eca | 350 | } |
5874583d HR |
351 | if (strcmp(entry->key, key) < 0) |
352 | begin = middle + 1; | |
353 | else | |
354 | end = middle; | |
6f2fad74 NB |
355 | } |
356 | ||
5874583d HR |
357 | *lo = begin; |
358 | return 0; | |
359 | } | |
6f2fad74 | 360 | |
5874583d HR |
361 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
362 | { | |
363 | int begin = 0, end = smcreg.key_count; | |
364 | const struct applesmc_entry *entry; | |
365 | ||
366 | while (begin != end) { | |
367 | int middle = begin + (end - begin) / 2; | |
368 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
369 | if (IS_ERR(entry)) { |
370 | *hi = smcreg.key_count; | |
5874583d | 371 | return PTR_ERR(entry); |
0fc86eca | 372 | } |
5874583d HR |
373 | if (strcmp(key, entry->key) < 0) |
374 | end = middle; | |
375 | else | |
376 | begin = middle + 1; | |
6f2fad74 | 377 | } |
6f2fad74 | 378 | |
5874583d | 379 | *hi = begin; |
6f2fad74 NB |
380 | return 0; |
381 | } | |
382 | ||
5874583d | 383 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 384 | { |
5874583d HR |
385 | int begin, end; |
386 | int ret; | |
6f2fad74 | 387 | |
5874583d HR |
388 | ret = applesmc_get_lower_bound(&begin, key); |
389 | if (ret) | |
390 | return ERR_PTR(ret); | |
391 | ret = applesmc_get_upper_bound(&end, key); | |
392 | if (ret) | |
393 | return ERR_PTR(ret); | |
394 | if (end - begin != 1) | |
395 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 396 | |
5874583d HR |
397 | return applesmc_get_entry_by_index(begin); |
398 | } | |
6f2fad74 | 399 | |
5874583d HR |
400 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
401 | { | |
402 | const struct applesmc_entry *entry; | |
6f2fad74 | 403 | |
5874583d HR |
404 | entry = applesmc_get_entry_by_key(key); |
405 | if (IS_ERR(entry)) | |
406 | return PTR_ERR(entry); | |
6f2fad74 | 407 | |
5874583d HR |
408 | return applesmc_read_entry(entry, buffer, len); |
409 | } | |
410 | ||
411 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
412 | { | |
413 | const struct applesmc_entry *entry; | |
414 | ||
415 | entry = applesmc_get_entry_by_key(key); | |
416 | if (IS_ERR(entry)) | |
417 | return PTR_ERR(entry); | |
418 | ||
419 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
420 | } |
421 | ||
40ef06f1 HR |
422 | static int applesmc_has_key(const char *key, bool *value) |
423 | { | |
424 | const struct applesmc_entry *entry; | |
425 | ||
426 | entry = applesmc_get_entry_by_key(key); | |
427 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
428 | return PTR_ERR(entry); | |
429 | ||
430 | *value = !IS_ERR(entry); | |
431 | return 0; | |
432 | } | |
433 | ||
6f2fad74 | 434 | /* |
edf48f3a | 435 | * applesmc_read_s16 - Read 16-bit signed big endian register |
6f2fad74 | 436 | */ |
edf48f3a | 437 | static int applesmc_read_s16(const char *key, s16 *value) |
6f2fad74 NB |
438 | { |
439 | u8 buffer[2]; | |
440 | int ret; | |
441 | ||
edf48f3a HR |
442 | ret = applesmc_read_key(key, buffer, 2); |
443 | if (ret) | |
444 | return ret; | |
6f2fad74 NB |
445 | |
446 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
edf48f3a | 447 | return 0; |
6f2fad74 NB |
448 | } |
449 | ||
450 | /* | |
2344cd0c | 451 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 452 | */ |
2344cd0c | 453 | static void applesmc_device_init(void) |
6f2fad74 | 454 | { |
2344cd0c | 455 | int total; |
6f2fad74 NB |
456 | u8 buffer[2]; |
457 | ||
40ef06f1 | 458 | if (!smcreg.has_accelerometer) |
2344cd0c | 459 | return; |
6f2fad74 | 460 | |
6f2fad74 | 461 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 462 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 463 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 464 | return; |
6f2fad74 NB |
465 | buffer[0] = 0xe0; |
466 | buffer[1] = 0x00; | |
467 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
468 | msleep(INIT_WAIT_MSECS); | |
469 | } | |
470 | ||
1ee7c71b | 471 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
472 | } |
473 | ||
e30bca12 HR |
474 | static int applesmc_init_index(struct applesmc_registers *s) |
475 | { | |
476 | const struct applesmc_entry *entry; | |
477 | unsigned int i; | |
478 | ||
479 | if (s->index) | |
480 | return 0; | |
481 | ||
482 | s->index = kcalloc(s->temp_count, sizeof(s->index[0]), GFP_KERNEL); | |
483 | if (!s->index) | |
484 | return -ENOMEM; | |
485 | ||
486 | for (i = s->temp_begin; i < s->temp_end; i++) { | |
487 | entry = applesmc_get_entry_by_index(i); | |
488 | if (IS_ERR(entry)) | |
489 | continue; | |
490 | if (strcmp(entry->type, TEMP_SENSOR_TYPE)) | |
491 | continue; | |
492 | s->index[s->index_count++] = entry->key; | |
493 | } | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
5874583d HR |
498 | /* |
499 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
500 | */ | |
501 | static int applesmc_init_smcreg_try(void) | |
502 | { | |
503 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 504 | bool left_light_sensor, right_light_sensor; |
3eba2bf7 | 505 | u8 tmp[1]; |
5874583d HR |
506 | int ret; |
507 | ||
508 | if (s->init_complete) | |
509 | return 0; | |
510 | ||
511 | ret = read_register_count(&s->key_count); | |
512 | if (ret) | |
513 | return ret; | |
514 | ||
515 | if (!s->cache) | |
516 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
517 | if (!s->cache) | |
518 | return -ENOMEM; | |
519 | ||
3eba2bf7 HR |
520 | ret = applesmc_read_key(FANS_COUNT, tmp, 1); |
521 | if (ret) | |
522 | return ret; | |
523 | s->fan_count = tmp[0]; | |
524 | ||
9792dadf HR |
525 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
526 | if (ret) | |
527 | return ret; | |
528 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
529 | if (ret) | |
530 | return ret; | |
531 | s->temp_count = s->temp_end - s->temp_begin; | |
532 | ||
e30bca12 HR |
533 | ret = applesmc_init_index(s); |
534 | if (ret) | |
535 | return ret; | |
536 | ||
40ef06f1 HR |
537 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
538 | if (ret) | |
539 | return ret; | |
540 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
541 | if (ret) | |
542 | return ret; | |
543 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
544 | if (ret) | |
545 | return ret; | |
546 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
547 | if (ret) | |
548 | return ret; | |
549 | ||
550 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
551 | s->init_complete = true; |
552 | ||
e30bca12 HR |
553 | pr_info("key=%d fan=%d temp=%d index=%d acc=%d lux=%d kbd=%d\n", |
554 | s->key_count, s->fan_count, s->temp_count, s->index_count, | |
40ef06f1 HR |
555 | s->has_accelerometer, |
556 | s->num_light_sensors, | |
557 | s->has_key_backlight); | |
5874583d HR |
558 | |
559 | return 0; | |
560 | } | |
561 | ||
e30bca12 HR |
562 | static void applesmc_destroy_smcreg(void) |
563 | { | |
564 | kfree(smcreg.index); | |
565 | smcreg.index = NULL; | |
566 | kfree(smcreg.cache); | |
567 | smcreg.cache = NULL; | |
568 | smcreg.init_complete = false; | |
569 | } | |
570 | ||
5874583d HR |
571 | /* |
572 | * applesmc_init_smcreg - Initialize register cache. | |
573 | * | |
574 | * Retries until initialization is successful, or the operation times out. | |
575 | * | |
576 | */ | |
577 | static int applesmc_init_smcreg(void) | |
578 | { | |
579 | int ms, ret; | |
580 | ||
581 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
582 | ret = applesmc_init_smcreg_try(); | |
583 | if (!ret) { | |
584 | if (ms) | |
585 | pr_info("init_smcreg() took %d ms\n", ms); | |
586 | return 0; | |
587 | } | |
588 | msleep(INIT_WAIT_MSECS); | |
589 | } | |
590 | ||
e30bca12 | 591 | applesmc_destroy_smcreg(); |
5874583d HR |
592 | |
593 | return ret; | |
594 | } | |
595 | ||
6f2fad74 NB |
596 | /* Device model stuff */ |
597 | static int applesmc_probe(struct platform_device *dev) | |
598 | { | |
5874583d HR |
599 | int ret; |
600 | ||
601 | ret = applesmc_init_smcreg(); | |
602 | if (ret) | |
603 | return ret; | |
604 | ||
2344cd0c | 605 | applesmc_device_init(); |
6f2fad74 | 606 | |
6f2fad74 NB |
607 | return 0; |
608 | } | |
609 | ||
a976f150 HR |
610 | /* Synchronize device with memorized backlight state */ |
611 | static int applesmc_pm_resume(struct device *dev) | |
612 | { | |
40ef06f1 | 613 | if (smcreg.has_key_backlight) |
a976f150 | 614 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
615 | return 0; |
616 | } | |
617 | ||
618 | /* Reinitialize device on resume from hibernation */ | |
619 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 620 | { |
2344cd0c | 621 | applesmc_device_init(); |
a976f150 | 622 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
623 | } |
624 | ||
47145210 | 625 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
626 | .resume = applesmc_pm_resume, |
627 | .restore = applesmc_pm_restore, | |
628 | }; | |
629 | ||
6f2fad74 NB |
630 | static struct platform_driver applesmc_driver = { |
631 | .probe = applesmc_probe, | |
6f2fad74 NB |
632 | .driver = { |
633 | .name = "applesmc", | |
634 | .owner = THIS_MODULE, | |
a976f150 | 635 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
636 | }, |
637 | }; | |
638 | ||
639 | /* | |
640 | * applesmc_calibrate - Set our "resting" values. Callers must | |
641 | * hold applesmc_lock. | |
642 | */ | |
643 | static void applesmc_calibrate(void) | |
644 | { | |
edf48f3a HR |
645 | applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x); |
646 | applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y); | |
6f2fad74 NB |
647 | rest_x = -rest_x; |
648 | } | |
649 | ||
d5cf2b99 | 650 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 651 | { |
d5cf2b99 | 652 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
653 | s16 x, y; |
654 | ||
edf48f3a | 655 | if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x)) |
5874583d | 656 | return; |
edf48f3a | 657 | if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y)) |
5874583d | 658 | return; |
6f2fad74 NB |
659 | |
660 | x = -x; | |
d5cf2b99 DT |
661 | input_report_abs(idev, ABS_X, x - rest_x); |
662 | input_report_abs(idev, ABS_Y, y - rest_y); | |
663 | input_sync(idev); | |
6f2fad74 NB |
664 | } |
665 | ||
666 | /* Sysfs Files */ | |
667 | ||
fa74419b NB |
668 | static ssize_t applesmc_name_show(struct device *dev, |
669 | struct device_attribute *attr, char *buf) | |
670 | { | |
671 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
672 | } | |
673 | ||
6f2fad74 NB |
674 | static ssize_t applesmc_position_show(struct device *dev, |
675 | struct device_attribute *attr, char *buf) | |
676 | { | |
677 | int ret; | |
678 | s16 x, y, z; | |
679 | ||
edf48f3a | 680 | ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x); |
6f2fad74 NB |
681 | if (ret) |
682 | goto out; | |
edf48f3a | 683 | ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y); |
6f2fad74 NB |
684 | if (ret) |
685 | goto out; | |
edf48f3a | 686 | ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z); |
6f2fad74 NB |
687 | if (ret) |
688 | goto out; | |
689 | ||
690 | out: | |
6f2fad74 NB |
691 | if (ret) |
692 | return ret; | |
693 | else | |
694 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
695 | } | |
696 | ||
697 | static ssize_t applesmc_light_show(struct device *dev, | |
698 | struct device_attribute *attr, char *sysfsbuf) | |
699 | { | |
5874583d | 700 | const struct applesmc_entry *entry; |
8bd1a12a | 701 | static int data_length; |
6f2fad74 NB |
702 | int ret; |
703 | u8 left = 0, right = 0; | |
5874583d | 704 | u8 buffer[10]; |
6f2fad74 | 705 | |
8bd1a12a | 706 | if (!data_length) { |
5874583d HR |
707 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
708 | if (IS_ERR(entry)) | |
709 | return PTR_ERR(entry); | |
710 | if (entry->len > 10) | |
711 | return -ENXIO; | |
712 | data_length = entry->len; | |
1ee7c71b | 713 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
714 | } |
715 | ||
716 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
717 | /* newer macbooks report a single 10-bit bigendian value */ |
718 | if (data_length == 10) { | |
719 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
720 | goto out; | |
721 | } | |
6f2fad74 NB |
722 | left = buffer[2]; |
723 | if (ret) | |
724 | goto out; | |
8bd1a12a | 725 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
726 | right = buffer[2]; |
727 | ||
728 | out: | |
6f2fad74 NB |
729 | if (ret) |
730 | return ret; | |
731 | else | |
732 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
733 | } | |
734 | ||
fa5575cf AM |
735 | /* Displays sensor key as label */ |
736 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
737 | struct device_attribute *devattr, char *sysfsbuf) | |
738 | { | |
e30bca12 | 739 | const char *key = smcreg.index[to_index(devattr)]; |
fa5575cf | 740 | |
e30bca12 | 741 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); |
fa5575cf AM |
742 | } |
743 | ||
6f2fad74 NB |
744 | /* Displays degree Celsius * 1000 */ |
745 | static ssize_t applesmc_show_temperature(struct device *dev, | |
746 | struct device_attribute *devattr, char *sysfsbuf) | |
747 | { | |
e30bca12 | 748 | const char *key = smcreg.index[to_index(devattr)]; |
6f2fad74 | 749 | int ret; |
b6e5122f HR |
750 | s16 value; |
751 | int temp; | |
6f2fad74 | 752 | |
e30bca12 | 753 | ret = applesmc_read_s16(key, &value); |
6f2fad74 NB |
754 | if (ret) |
755 | return ret; | |
9792dadf | 756 | |
b6e5122f | 757 | temp = 250 * (value >> 6); |
9792dadf | 758 | |
b6e5122f | 759 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp); |
6f2fad74 NB |
760 | } |
761 | ||
762 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
763 | struct device_attribute *attr, char *sysfsbuf) | |
764 | { | |
765 | int ret; | |
766 | unsigned int speed = 0; | |
767 | char newkey[5]; | |
768 | u8 buffer[2]; | |
6f2fad74 | 769 | |
3eba2bf7 | 770 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 771 | |
6f2fad74 NB |
772 | ret = applesmc_read_key(newkey, buffer, 2); |
773 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
774 | ||
6f2fad74 NB |
775 | if (ret) |
776 | return ret; | |
777 | else | |
778 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
779 | } | |
780 | ||
781 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
782 | struct device_attribute *attr, | |
783 | const char *sysfsbuf, size_t count) | |
784 | { | |
785 | int ret; | |
2bfe8148 | 786 | unsigned long speed; |
6f2fad74 NB |
787 | char newkey[5]; |
788 | u8 buffer[2]; | |
6f2fad74 | 789 | |
179c4fdb | 790 | if (kstrtoul(sysfsbuf, 10, &speed) < 0 || speed >= 0x4000) |
2bfe8148 | 791 | return -EINVAL; /* Bigger than a 14-bit value */ |
6f2fad74 | 792 | |
3eba2bf7 | 793 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 794 | |
6f2fad74 NB |
795 | buffer[0] = (speed >> 6) & 0xff; |
796 | buffer[1] = (speed << 2) & 0xff; | |
797 | ret = applesmc_write_key(newkey, buffer, 2); | |
798 | ||
6f2fad74 NB |
799 | if (ret) |
800 | return ret; | |
801 | else | |
802 | return count; | |
803 | } | |
804 | ||
805 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
3eba2bf7 | 806 | struct device_attribute *attr, char *sysfsbuf) |
6f2fad74 NB |
807 | { |
808 | int ret; | |
809 | u16 manual = 0; | |
810 | u8 buffer[2]; | |
6f2fad74 | 811 | |
6f2fad74 | 812 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
3eba2bf7 | 813 | manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; |
6f2fad74 | 814 | |
6f2fad74 NB |
815 | if (ret) |
816 | return ret; | |
817 | else | |
818 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
819 | } | |
820 | ||
821 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
3eba2bf7 | 822 | struct device_attribute *attr, |
6f2fad74 NB |
823 | const char *sysfsbuf, size_t count) |
824 | { | |
825 | int ret; | |
826 | u8 buffer[2]; | |
2bfe8148 | 827 | unsigned long input; |
6f2fad74 | 828 | u16 val; |
6f2fad74 | 829 | |
179c4fdb | 830 | if (kstrtoul(sysfsbuf, 10, &input) < 0) |
2bfe8148 | 831 | return -EINVAL; |
6f2fad74 | 832 | |
6f2fad74 NB |
833 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
834 | val = (buffer[0] << 8 | buffer[1]); | |
835 | if (ret) | |
836 | goto out; | |
837 | ||
838 | if (input) | |
3eba2bf7 | 839 | val = val | (0x01 << to_index(attr)); |
6f2fad74 | 840 | else |
3eba2bf7 | 841 | val = val & ~(0x01 << to_index(attr)); |
6f2fad74 NB |
842 | |
843 | buffer[0] = (val >> 8) & 0xFF; | |
844 | buffer[1] = val & 0xFF; | |
845 | ||
846 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
847 | ||
848 | out: | |
6f2fad74 NB |
849 | if (ret) |
850 | return ret; | |
851 | else | |
852 | return count; | |
853 | } | |
854 | ||
855 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
856 | struct device_attribute *attr, char *sysfsbuf) | |
857 | { | |
858 | int ret; | |
859 | char newkey[5]; | |
860 | u8 buffer[17]; | |
6f2fad74 | 861 | |
3eba2bf7 | 862 | sprintf(newkey, FAN_ID_FMT, to_index(attr)); |
6f2fad74 | 863 | |
6f2fad74 NB |
864 | ret = applesmc_read_key(newkey, buffer, 16); |
865 | buffer[16] = 0; | |
866 | ||
6f2fad74 NB |
867 | if (ret) |
868 | return ret; | |
869 | else | |
870 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
871 | } | |
872 | ||
873 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
874 | struct device_attribute *attr, char *sysfsbuf) | |
875 | { | |
876 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
877 | } | |
878 | ||
879 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
880 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
881 | { | |
6f2fad74 | 882 | applesmc_calibrate(); |
6f2fad74 NB |
883 | |
884 | return count; | |
885 | } | |
886 | ||
6f2fad74 NB |
887 | static void applesmc_backlight_set(struct work_struct *work) |
888 | { | |
a976f150 | 889 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
890 | } |
891 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
892 | ||
893 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
894 | enum led_brightness value) | |
895 | { | |
896 | int ret; | |
897 | ||
a976f150 | 898 | backlight_state[0] = value; |
6f2fad74 NB |
899 | ret = queue_work(applesmc_led_wq, &backlight_work); |
900 | ||
901 | if (debug && (!ret)) | |
902 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
903 | } | |
904 | ||
905 | static ssize_t applesmc_key_count_show(struct device *dev, | |
906 | struct device_attribute *attr, char *sysfsbuf) | |
907 | { | |
908 | int ret; | |
909 | u8 buffer[4]; | |
910 | u32 count; | |
911 | ||
6f2fad74 NB |
912 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
913 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
914 | ((u32)buffer[2]<<8) + buffer[3]; | |
915 | ||
6f2fad74 NB |
916 | if (ret) |
917 | return ret; | |
918 | else | |
919 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
920 | } | |
921 | ||
922 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
923 | struct device_attribute *attr, char *sysfsbuf) | |
924 | { | |
5874583d | 925 | const struct applesmc_entry *entry; |
6f2fad74 NB |
926 | int ret; |
927 | ||
5874583d HR |
928 | entry = applesmc_get_entry_by_index(key_at_index); |
929 | if (IS_ERR(entry)) | |
930 | return PTR_ERR(entry); | |
931 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
932 | if (ret) | |
6f2fad74 | 933 | return ret; |
6f2fad74 | 934 | |
5874583d | 935 | return entry->len; |
6f2fad74 NB |
936 | } |
937 | ||
938 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
939 | struct device_attribute *attr, char *sysfsbuf) | |
940 | { | |
5874583d | 941 | const struct applesmc_entry *entry; |
6f2fad74 | 942 | |
5874583d HR |
943 | entry = applesmc_get_entry_by_index(key_at_index); |
944 | if (IS_ERR(entry)) | |
945 | return PTR_ERR(entry); | |
6f2fad74 | 946 | |
5874583d | 947 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
948 | } |
949 | ||
950 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
951 | struct device_attribute *attr, char *sysfsbuf) | |
952 | { | |
5874583d | 953 | const struct applesmc_entry *entry; |
6f2fad74 | 954 | |
5874583d HR |
955 | entry = applesmc_get_entry_by_index(key_at_index); |
956 | if (IS_ERR(entry)) | |
957 | return PTR_ERR(entry); | |
6f2fad74 | 958 | |
5874583d | 959 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
960 | } |
961 | ||
962 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
963 | struct device_attribute *attr, char *sysfsbuf) | |
964 | { | |
5874583d | 965 | const struct applesmc_entry *entry; |
6f2fad74 | 966 | |
5874583d HR |
967 | entry = applesmc_get_entry_by_index(key_at_index); |
968 | if (IS_ERR(entry)) | |
969 | return PTR_ERR(entry); | |
6f2fad74 | 970 | |
5874583d | 971 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
972 | } |
973 | ||
974 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
975 | struct device_attribute *attr, char *sysfsbuf) | |
976 | { | |
977 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
978 | } | |
979 | ||
980 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
981 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
982 | { | |
5874583d | 983 | unsigned long newkey; |
6f2fad74 | 984 | |
179c4fdb | 985 | if (kstrtoul(sysfsbuf, 10, &newkey) < 0 |
5874583d HR |
986 | || newkey >= smcreg.key_count) |
987 | return -EINVAL; | |
6f2fad74 | 988 | |
5874583d | 989 | key_at_index = newkey; |
6f2fad74 NB |
990 | return count; |
991 | } | |
992 | ||
993 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 994 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
995 | .default_trigger = "nand-disk", |
996 | .brightness_set = applesmc_brightness_set, | |
997 | }; | |
998 | ||
0b0b5dff HR |
999 | static struct applesmc_node_group info_group[] = { |
1000 | { "name", applesmc_name_show }, | |
1001 | { "key_count", applesmc_key_count_show }, | |
1002 | { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store }, | |
1003 | { "key_at_index_name", applesmc_key_at_index_name_show }, | |
1004 | { "key_at_index_type", applesmc_key_at_index_type_show }, | |
1005 | { "key_at_index_data_length", applesmc_key_at_index_data_length_show }, | |
1006 | { "key_at_index_data", applesmc_key_at_index_read_show }, | |
1007 | { } | |
6f2fad74 NB |
1008 | }; |
1009 | ||
0b0b5dff HR |
1010 | static struct applesmc_node_group accelerometer_group[] = { |
1011 | { "position", applesmc_position_show }, | |
1012 | { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store }, | |
1013 | { } | |
6f2fad74 NB |
1014 | }; |
1015 | ||
0b0b5dff HR |
1016 | static struct applesmc_node_group light_sensor_group[] = { |
1017 | { "light", applesmc_light_show }, | |
1018 | { } | |
1019 | }; | |
6f2fad74 | 1020 | |
3eba2bf7 HR |
1021 | static struct applesmc_node_group fan_group[] = { |
1022 | { "fan%d_label", applesmc_show_fan_position }, | |
1023 | { "fan%d_input", applesmc_show_fan_speed, NULL, 0 }, | |
1024 | { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 }, | |
1025 | { "fan%d_max", applesmc_show_fan_speed, NULL, 2 }, | |
1026 | { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 }, | |
1027 | { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 }, | |
1028 | { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual }, | |
1029 | { } | |
6f2fad74 NB |
1030 | }; |
1031 | ||
9792dadf HR |
1032 | static struct applesmc_node_group temp_group[] = { |
1033 | { "temp%d_label", applesmc_show_sensor_label }, | |
1034 | { "temp%d_input", applesmc_show_temperature }, | |
1035 | { } | |
fa5575cf AM |
1036 | }; |
1037 | ||
6f2fad74 NB |
1038 | /* Module stuff */ |
1039 | ||
9792dadf HR |
1040 | /* |
1041 | * applesmc_destroy_nodes - remove files and free associated memory | |
1042 | */ | |
1043 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1044 | { | |
1045 | struct applesmc_node_group *grp; | |
1046 | struct applesmc_dev_attr *node; | |
1047 | ||
1048 | for (grp = groups; grp->nodes; grp++) { | |
1049 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1050 | sysfs_remove_file(&pdev->dev.kobj, | |
1051 | &node->sda.dev_attr.attr); | |
1052 | kfree(grp->nodes); | |
1053 | grp->nodes = NULL; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1059 | */ | |
1060 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1061 | { | |
1062 | struct applesmc_node_group *grp; | |
1063 | struct applesmc_dev_attr *node; | |
1064 | struct attribute *attr; | |
1065 | int ret, i; | |
1066 | ||
1067 | for (grp = groups; grp->format; grp++) { | |
1068 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1069 | if (!grp->nodes) { | |
1070 | ret = -ENOMEM; | |
1071 | goto out; | |
1072 | } | |
1073 | for (i = 0; i < num; i++) { | |
1074 | node = &grp->nodes[i]; | |
1075 | sprintf(node->name, grp->format, i + 1); | |
3eba2bf7 | 1076 | node->sda.index = (grp->option << 16) | (i & 0xffff); |
9792dadf HR |
1077 | node->sda.dev_attr.show = grp->show; |
1078 | node->sda.dev_attr.store = grp->store; | |
1079 | attr = &node->sda.dev_attr.attr; | |
9d1f8a40 | 1080 | sysfs_attr_init(attr); |
9792dadf HR |
1081 | attr->name = node->name; |
1082 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1083 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1084 | if (ret) { | |
1085 | attr->name = NULL; | |
1086 | goto out; | |
1087 | } | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | return 0; | |
1092 | out: | |
1093 | applesmc_destroy_nodes(groups); | |
1094 | return ret; | |
1095 | } | |
1096 | ||
6f2fad74 NB |
1097 | /* Create accelerometer ressources */ |
1098 | static int applesmc_create_accelerometer(void) | |
1099 | { | |
d5cf2b99 | 1100 | struct input_dev *idev; |
6f2fad74 NB |
1101 | int ret; |
1102 | ||
0b0b5dff HR |
1103 | if (!smcreg.has_accelerometer) |
1104 | return 0; | |
1105 | ||
1106 | ret = applesmc_create_nodes(accelerometer_group, 1); | |
6f2fad74 NB |
1107 | if (ret) |
1108 | goto out; | |
1109 | ||
d5cf2b99 | 1110 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1111 | if (!applesmc_idev) { |
1112 | ret = -ENOMEM; | |
1113 | goto out_sysfs; | |
1114 | } | |
1115 | ||
d5cf2b99 DT |
1116 | applesmc_idev->poll = applesmc_idev_poll; |
1117 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1118 | ||
6f2fad74 NB |
1119 | /* initial calibrate for the input device */ |
1120 | applesmc_calibrate(); | |
1121 | ||
d5cf2b99 DT |
1122 | /* initialize the input device */ |
1123 | idev = applesmc_idev->input; | |
1124 | idev->name = "applesmc"; | |
1125 | idev->id.bustype = BUS_HOST; | |
1126 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1127 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1128 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1129 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1130 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1131 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1132 | ||
d5cf2b99 | 1133 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1134 | if (ret) |
1135 | goto out_idev; | |
1136 | ||
6f2fad74 NB |
1137 | return 0; |
1138 | ||
1139 | out_idev: | |
d5cf2b99 | 1140 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1141 | |
1142 | out_sysfs: | |
0b0b5dff | 1143 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 NB |
1144 | |
1145 | out: | |
1ee7c71b | 1146 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1147 | return ret; |
1148 | } | |
1149 | ||
1150 | /* Release all ressources used by the accelerometer */ | |
1151 | static void applesmc_release_accelerometer(void) | |
1152 | { | |
0b0b5dff HR |
1153 | if (!smcreg.has_accelerometer) |
1154 | return; | |
d5cf2b99 DT |
1155 | input_unregister_polled_device(applesmc_idev); |
1156 | input_free_polled_device(applesmc_idev); | |
0b0b5dff | 1157 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 | 1158 | } |
0b0b5dff HR |
1159 | |
1160 | static int applesmc_create_light_sensor(void) | |
1161 | { | |
1162 | if (!smcreg.num_light_sensors) | |
1163 | return 0; | |
1164 | return applesmc_create_nodes(light_sensor_group, 1); | |
1165 | } | |
1166 | ||
1167 | static void applesmc_release_light_sensor(void) | |
1168 | { | |
1169 | if (!smcreg.num_light_sensors) | |
1170 | return; | |
1171 | applesmc_destroy_nodes(light_sensor_group); | |
1172 | } | |
1173 | ||
1174 | static int applesmc_create_key_backlight(void) | |
1175 | { | |
1176 | if (!smcreg.has_key_backlight) | |
1177 | return 0; | |
1178 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1179 | if (!applesmc_led_wq) | |
1180 | return -ENOMEM; | |
1181 | return led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1182 | } | |
1183 | ||
1184 | static void applesmc_release_key_backlight(void) | |
1185 | { | |
1186 | if (!smcreg.has_key_backlight) | |
1187 | return; | |
1188 | led_classdev_unregister(&applesmc_backlight); | |
1189 | destroy_workqueue(applesmc_led_wq); | |
1190 | } | |
1191 | ||
40ef06f1 HR |
1192 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1193 | { | |
1194 | return 1; | |
1195 | } | |
6f2fad74 | 1196 | |
85ebfd3e GR |
1197 | /* |
1198 | * Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1199 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". | |
1200 | */ | |
6f2fad74 | 1201 | static __initdata struct dmi_system_id applesmc_whitelist[] = { |
f5274c97 HR |
1202 | { applesmc_dmi_match, "Apple MacBook Air", { |
1203 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1204 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1205 | }, |
6f2fad74 | 1206 | { applesmc_dmi_match, "Apple MacBook Pro", { |
2bfe8148 GR |
1207 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1208 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro") }, | |
40ef06f1 | 1209 | }, |
cd19ba13 | 1210 | { applesmc_dmi_match, "Apple MacBook", { |
2bfe8148 GR |
1211 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1212 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBook") }, | |
40ef06f1 | 1213 | }, |
6f2fad74 | 1214 | { applesmc_dmi_match, "Apple Macmini", { |
2bfe8148 GR |
1215 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1216 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") }, | |
40ef06f1 | 1217 | }, |
45a3a36b HR |
1218 | { applesmc_dmi_match, "Apple MacPro", { |
1219 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1220 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1221 | }, |
9f86f28d | 1222 | { applesmc_dmi_match, "Apple iMac", { |
2bfe8148 GR |
1223 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1224 | DMI_MATCH(DMI_PRODUCT_NAME, "iMac") }, | |
40ef06f1 | 1225 | }, |
6f2fad74 NB |
1226 | { .ident = NULL } |
1227 | }; | |
1228 | ||
1229 | static int __init applesmc_init(void) | |
1230 | { | |
1231 | int ret; | |
6f2fad74 | 1232 | |
6f2fad74 | 1233 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1234 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1235 | ret = -ENODEV; |
1236 | goto out; | |
1237 | } | |
1238 | ||
1239 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1240 | "applesmc")) { | |
1241 | ret = -ENXIO; | |
1242 | goto out; | |
1243 | } | |
1244 | ||
1245 | ret = platform_driver_register(&applesmc_driver); | |
1246 | if (ret) | |
1247 | goto out_region; | |
1248 | ||
ddfbf2af JD |
1249 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1250 | NULL, 0); | |
6f2fad74 NB |
1251 | if (IS_ERR(pdev)) { |
1252 | ret = PTR_ERR(pdev); | |
1253 | goto out_driver; | |
1254 | } | |
1255 | ||
5874583d HR |
1256 | /* create register cache */ |
1257 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1258 | if (ret) |
1259 | goto out_device; | |
fa74419b | 1260 | |
0b0b5dff | 1261 | ret = applesmc_create_nodes(info_group, 1); |
5874583d HR |
1262 | if (ret) |
1263 | goto out_smcreg; | |
1264 | ||
3eba2bf7 HR |
1265 | ret = applesmc_create_nodes(fan_group, smcreg.fan_count); |
1266 | if (ret) | |
1267 | goto out_info; | |
6f2fad74 | 1268 | |
e30bca12 | 1269 | ret = applesmc_create_nodes(temp_group, smcreg.index_count); |
9792dadf HR |
1270 | if (ret) |
1271 | goto out_fans; | |
6f2fad74 | 1272 | |
0b0b5dff HR |
1273 | ret = applesmc_create_accelerometer(); |
1274 | if (ret) | |
1275 | goto out_temperature; | |
6f2fad74 | 1276 | |
0b0b5dff HR |
1277 | ret = applesmc_create_light_sensor(); |
1278 | if (ret) | |
1279 | goto out_accelerometer; | |
6f2fad74 | 1280 | |
0b0b5dff HR |
1281 | ret = applesmc_create_key_backlight(); |
1282 | if (ret) | |
1283 | goto out_light_sysfs; | |
6f2fad74 | 1284 | |
1beeffe4 TJ |
1285 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1286 | if (IS_ERR(hwmon_dev)) { | |
1287 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1288 | goto out_light_ledclass; |
1289 | } | |
1290 | ||
6f2fad74 NB |
1291 | return 0; |
1292 | ||
1293 | out_light_ledclass: | |
0b0b5dff | 1294 | applesmc_release_key_backlight(); |
6f2fad74 | 1295 | out_light_sysfs: |
0b0b5dff | 1296 | applesmc_release_light_sensor(); |
6f2fad74 | 1297 | out_accelerometer: |
0b0b5dff | 1298 | applesmc_release_accelerometer(); |
6f2fad74 | 1299 | out_temperature: |
9792dadf | 1300 | applesmc_destroy_nodes(temp_group); |
0559a538 | 1301 | out_fans: |
3eba2bf7 HR |
1302 | applesmc_destroy_nodes(fan_group); |
1303 | out_info: | |
0b0b5dff | 1304 | applesmc_destroy_nodes(info_group); |
5874583d HR |
1305 | out_smcreg: |
1306 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1307 | out_device: |
1308 | platform_device_unregister(pdev); | |
1309 | out_driver: | |
1310 | platform_driver_unregister(&applesmc_driver); | |
1311 | out_region: | |
1312 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1313 | out: | |
1ee7c71b | 1314 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1315 | return ret; |
1316 | } | |
1317 | ||
1318 | static void __exit applesmc_exit(void) | |
1319 | { | |
1beeffe4 | 1320 | hwmon_device_unregister(hwmon_dev); |
0b0b5dff HR |
1321 | applesmc_release_key_backlight(); |
1322 | applesmc_release_light_sensor(); | |
1323 | applesmc_release_accelerometer(); | |
9792dadf | 1324 | applesmc_destroy_nodes(temp_group); |
3eba2bf7 | 1325 | applesmc_destroy_nodes(fan_group); |
0b0b5dff | 1326 | applesmc_destroy_nodes(info_group); |
5874583d | 1327 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1328 | platform_device_unregister(pdev); |
1329 | platform_driver_unregister(&applesmc_driver); | |
1330 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
6f2fad74 NB |
1331 | } |
1332 | ||
1333 | module_init(applesmc_init); | |
1334 | module_exit(applesmc_exit); | |
1335 | ||
1336 | MODULE_AUTHOR("Nicolas Boichat"); | |
1337 | MODULE_DESCRIPTION("Apple SMC"); | |
1338 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1339 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |