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> | |
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 */ | |
40ef06f1 HR |
136 | int num_light_sensors; /* number of light sensors */ |
137 | bool has_accelerometer; /* has motion sensor */ | |
138 | bool has_key_backlight; /* has keyboard backlight */ | |
5874583d HR |
139 | bool init_complete; /* true when fully initialized */ |
140 | struct applesmc_entry *cache; /* cached key entries */ | |
141 | } smcreg = { | |
142 | .mutex = __MUTEX_INITIALIZER(smcreg.mutex), | |
143 | }; | |
144 | ||
6f2fad74 NB |
145 | static const int debug; |
146 | static struct platform_device *pdev; | |
147 | static s16 rest_x; | |
148 | static s16 rest_y; | |
a976f150 HR |
149 | static u8 backlight_state[2]; |
150 | ||
1beeffe4 | 151 | static struct device *hwmon_dev; |
d5cf2b99 | 152 | static struct input_polled_dev *applesmc_idev; |
6f2fad74 | 153 | |
6f2fad74 NB |
154 | /* |
155 | * Last index written to key_at_index sysfs file, and value to use for all other | |
156 | * key_at_index_* sysfs files. | |
157 | */ | |
158 | static unsigned int key_at_index; | |
159 | ||
160 | static struct workqueue_struct *applesmc_led_wq; | |
161 | ||
162 | /* | |
8c9398d1 | 163 | * __wait_status - Wait up to 32ms for the status port to get a certain value |
6f2fad74 NB |
164 | * (masked with 0x0f), returning zero if the value is obtained. Callers must |
165 | * hold applesmc_lock. | |
166 | */ | |
167 | static int __wait_status(u8 val) | |
168 | { | |
8c9398d1 | 169 | int us; |
6f2fad74 NB |
170 | |
171 | val = val & APPLESMC_STATUS_MASK; | |
172 | ||
8c9398d1 HR |
173 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
174 | udelay(us); | |
2bfe8148 | 175 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) |
6f2fad74 | 176 | return 0; |
6f2fad74 NB |
177 | } |
178 | ||
6f2fad74 NB |
179 | return -EIO; |
180 | } | |
181 | ||
84d2d7f2 HR |
182 | /* |
183 | * special treatment of command port - on newer macbooks, it seems necessary | |
184 | * to resend the command byte before polling the status again. Callers must | |
185 | * hold applesmc_lock. | |
186 | */ | |
187 | static int send_command(u8 cmd) | |
188 | { | |
8c9398d1 HR |
189 | int us; |
190 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { | |
84d2d7f2 | 191 | outb(cmd, APPLESMC_CMD_PORT); |
8c9398d1 | 192 | udelay(us); |
84d2d7f2 HR |
193 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c) |
194 | return 0; | |
84d2d7f2 | 195 | } |
84d2d7f2 HR |
196 | return -EIO; |
197 | } | |
198 | ||
5874583d | 199 | static int send_argument(const char *key) |
6f2fad74 NB |
200 | { |
201 | int i; | |
202 | ||
6f2fad74 NB |
203 | for (i = 0; i < 4; i++) { |
204 | outb(key[i], APPLESMC_DATA_PORT); | |
205 | if (__wait_status(0x04)) | |
206 | return -EIO; | |
207 | } | |
5874583d HR |
208 | return 0; |
209 | } | |
210 | ||
211 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
212 | { | |
213 | int i; | |
214 | ||
215 | if (send_command(cmd) || send_argument(key)) { | |
ac852edb | 216 | pr_warn("%.4s: read arg fail\n", key); |
5874583d HR |
217 | return -EIO; |
218 | } | |
6f2fad74 NB |
219 | |
220 | outb(len, APPLESMC_DATA_PORT); | |
6f2fad74 NB |
221 | |
222 | for (i = 0; i < len; i++) { | |
5874583d | 223 | if (__wait_status(0x05)) { |
ac852edb | 224 | pr_warn("%.4s: read data fail\n", key); |
6f2fad74 | 225 | return -EIO; |
5874583d | 226 | } |
6f2fad74 | 227 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 228 | } |
6f2fad74 NB |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
5874583d | 233 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
234 | { |
235 | int i; | |
236 | ||
5874583d HR |
237 | if (send_command(cmd) || send_argument(key)) { |
238 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 239 | return -EIO; |
6f2fad74 NB |
240 | } |
241 | ||
242 | outb(len, APPLESMC_DATA_PORT); | |
243 | ||
244 | for (i = 0; i < len; i++) { | |
5874583d HR |
245 | if (__wait_status(0x04)) { |
246 | pr_warn("%s: write data fail\n", key); | |
6f2fad74 | 247 | return -EIO; |
5874583d | 248 | } |
6f2fad74 NB |
249 | outb(buffer[i], APPLESMC_DATA_PORT); |
250 | } | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
5874583d HR |
255 | static int read_register_count(unsigned int *count) |
256 | { | |
257 | __be32 be; | |
258 | int ret; | |
259 | ||
260 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
261 | if (ret) | |
262 | return ret; | |
263 | ||
264 | *count = be32_to_cpu(be); | |
265 | return 0; | |
266 | } | |
267 | ||
6f2fad74 | 268 | /* |
5874583d HR |
269 | * Serialized I/O |
270 | * | |
271 | * Returns zero on success or a negative error on failure. | |
272 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 273 | */ |
5874583d HR |
274 | |
275 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
276 | u8 *buf, u8 len) | |
6f2fad74 | 277 | { |
5874583d | 278 | int ret; |
6f2fad74 | 279 | |
5874583d HR |
280 | if (entry->len != len) |
281 | return -EINVAL; | |
282 | mutex_lock(&smcreg.mutex); | |
283 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
284 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 285 | |
5874583d HR |
286 | return ret; |
287 | } | |
288 | ||
289 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
290 | const u8 *buf, u8 len) | |
291 | { | |
292 | int ret; | |
293 | ||
294 | if (entry->len != len) | |
295 | return -EINVAL; | |
296 | mutex_lock(&smcreg.mutex); | |
297 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
298 | mutex_unlock(&smcreg.mutex); | |
299 | return ret; | |
300 | } | |
301 | ||
302 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
303 | { | |
304 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
305 | u8 key[4], info[6]; | |
306 | __be32 be; | |
307 | int ret = 0; | |
308 | ||
309 | if (cache->valid) | |
310 | return cache; | |
311 | ||
312 | mutex_lock(&smcreg.mutex); | |
313 | ||
314 | if (cache->valid) | |
315 | goto out; | |
316 | be = cpu_to_be32(index); | |
317 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
318 | if (ret) | |
319 | goto out; | |
320 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
321 | if (ret) | |
322 | goto out; | |
323 | ||
324 | memcpy(cache->key, key, 4); | |
325 | cache->len = info[0]; | |
326 | memcpy(cache->type, &info[1], 4); | |
327 | cache->flags = info[5]; | |
328 | cache->valid = 1; | |
329 | ||
330 | out: | |
331 | mutex_unlock(&smcreg.mutex); | |
332 | if (ret) | |
333 | return ERR_PTR(ret); | |
334 | return cache; | |
335 | } | |
336 | ||
337 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
338 | { | |
339 | int begin = 0, end = smcreg.key_count; | |
340 | const struct applesmc_entry *entry; | |
341 | ||
342 | while (begin != end) { | |
343 | int middle = begin + (end - begin) / 2; | |
344 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
345 | if (IS_ERR(entry)) { |
346 | *lo = 0; | |
5874583d | 347 | return PTR_ERR(entry); |
0fc86eca | 348 | } |
5874583d HR |
349 | if (strcmp(entry->key, key) < 0) |
350 | begin = middle + 1; | |
351 | else | |
352 | end = middle; | |
6f2fad74 NB |
353 | } |
354 | ||
5874583d HR |
355 | *lo = begin; |
356 | return 0; | |
357 | } | |
6f2fad74 | 358 | |
5874583d HR |
359 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
360 | { | |
361 | int begin = 0, end = smcreg.key_count; | |
362 | const struct applesmc_entry *entry; | |
363 | ||
364 | while (begin != end) { | |
365 | int middle = begin + (end - begin) / 2; | |
366 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
367 | if (IS_ERR(entry)) { |
368 | *hi = smcreg.key_count; | |
5874583d | 369 | return PTR_ERR(entry); |
0fc86eca | 370 | } |
5874583d HR |
371 | if (strcmp(key, entry->key) < 0) |
372 | end = middle; | |
373 | else | |
374 | begin = middle + 1; | |
6f2fad74 | 375 | } |
6f2fad74 | 376 | |
5874583d | 377 | *hi = begin; |
6f2fad74 NB |
378 | return 0; |
379 | } | |
380 | ||
5874583d | 381 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 382 | { |
5874583d HR |
383 | int begin, end; |
384 | int ret; | |
6f2fad74 | 385 | |
5874583d HR |
386 | ret = applesmc_get_lower_bound(&begin, key); |
387 | if (ret) | |
388 | return ERR_PTR(ret); | |
389 | ret = applesmc_get_upper_bound(&end, key); | |
390 | if (ret) | |
391 | return ERR_PTR(ret); | |
392 | if (end - begin != 1) | |
393 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 394 | |
5874583d HR |
395 | return applesmc_get_entry_by_index(begin); |
396 | } | |
6f2fad74 | 397 | |
5874583d HR |
398 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
399 | { | |
400 | const struct applesmc_entry *entry; | |
6f2fad74 | 401 | |
5874583d HR |
402 | entry = applesmc_get_entry_by_key(key); |
403 | if (IS_ERR(entry)) | |
404 | return PTR_ERR(entry); | |
6f2fad74 | 405 | |
5874583d HR |
406 | return applesmc_read_entry(entry, buffer, len); |
407 | } | |
408 | ||
409 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
410 | { | |
411 | const struct applesmc_entry *entry; | |
412 | ||
413 | entry = applesmc_get_entry_by_key(key); | |
414 | if (IS_ERR(entry)) | |
415 | return PTR_ERR(entry); | |
416 | ||
417 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
418 | } |
419 | ||
40ef06f1 HR |
420 | static int applesmc_has_key(const char *key, bool *value) |
421 | { | |
422 | const struct applesmc_entry *entry; | |
423 | ||
424 | entry = applesmc_get_entry_by_key(key); | |
425 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
426 | return PTR_ERR(entry); | |
427 | ||
428 | *value = !IS_ERR(entry); | |
429 | return 0; | |
430 | } | |
431 | ||
6f2fad74 | 432 | /* |
edf48f3a | 433 | * applesmc_read_s16 - Read 16-bit signed big endian register |
6f2fad74 | 434 | */ |
edf48f3a | 435 | static int applesmc_read_s16(const char *key, s16 *value) |
6f2fad74 NB |
436 | { |
437 | u8 buffer[2]; | |
438 | int ret; | |
439 | ||
edf48f3a HR |
440 | ret = applesmc_read_key(key, buffer, 2); |
441 | if (ret) | |
442 | return ret; | |
6f2fad74 NB |
443 | |
444 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
edf48f3a | 445 | return 0; |
6f2fad74 NB |
446 | } |
447 | ||
448 | /* | |
2344cd0c | 449 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 450 | */ |
2344cd0c | 451 | static void applesmc_device_init(void) |
6f2fad74 | 452 | { |
2344cd0c | 453 | int total; |
6f2fad74 NB |
454 | u8 buffer[2]; |
455 | ||
40ef06f1 | 456 | if (!smcreg.has_accelerometer) |
2344cd0c | 457 | return; |
6f2fad74 | 458 | |
6f2fad74 | 459 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 460 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 461 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 462 | return; |
6f2fad74 NB |
463 | buffer[0] = 0xe0; |
464 | buffer[1] = 0x00; | |
465 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
466 | msleep(INIT_WAIT_MSECS); | |
467 | } | |
468 | ||
1ee7c71b | 469 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
470 | } |
471 | ||
5874583d HR |
472 | /* |
473 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
474 | */ | |
475 | static int applesmc_init_smcreg_try(void) | |
476 | { | |
477 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 478 | bool left_light_sensor, right_light_sensor; |
3eba2bf7 | 479 | u8 tmp[1]; |
5874583d HR |
480 | int ret; |
481 | ||
482 | if (s->init_complete) | |
483 | return 0; | |
484 | ||
485 | ret = read_register_count(&s->key_count); | |
486 | if (ret) | |
487 | return ret; | |
488 | ||
489 | if (!s->cache) | |
490 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
491 | if (!s->cache) | |
492 | return -ENOMEM; | |
493 | ||
3eba2bf7 HR |
494 | ret = applesmc_read_key(FANS_COUNT, tmp, 1); |
495 | if (ret) | |
496 | return ret; | |
497 | s->fan_count = tmp[0]; | |
498 | ||
9792dadf HR |
499 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
500 | if (ret) | |
501 | return ret; | |
502 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
503 | if (ret) | |
504 | return ret; | |
505 | s->temp_count = s->temp_end - s->temp_begin; | |
506 | ||
40ef06f1 HR |
507 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
508 | if (ret) | |
509 | return ret; | |
510 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
511 | if (ret) | |
512 | return ret; | |
513 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
514 | if (ret) | |
515 | return ret; | |
516 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
517 | if (ret) | |
518 | return ret; | |
519 | ||
520 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
521 | s->init_complete = true; |
522 | ||
3eba2bf7 HR |
523 | pr_info("key=%d fan=%d temp=%d acc=%d lux=%d kbd=%d\n", |
524 | s->key_count, s->fan_count, s->temp_count, | |
40ef06f1 HR |
525 | s->has_accelerometer, |
526 | s->num_light_sensors, | |
527 | s->has_key_backlight); | |
5874583d HR |
528 | |
529 | return 0; | |
530 | } | |
531 | ||
532 | /* | |
533 | * applesmc_init_smcreg - Initialize register cache. | |
534 | * | |
535 | * Retries until initialization is successful, or the operation times out. | |
536 | * | |
537 | */ | |
538 | static int applesmc_init_smcreg(void) | |
539 | { | |
540 | int ms, ret; | |
541 | ||
542 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
543 | ret = applesmc_init_smcreg_try(); | |
544 | if (!ret) { | |
545 | if (ms) | |
546 | pr_info("init_smcreg() took %d ms\n", ms); | |
547 | return 0; | |
548 | } | |
549 | msleep(INIT_WAIT_MSECS); | |
550 | } | |
551 | ||
552 | kfree(smcreg.cache); | |
553 | smcreg.cache = NULL; | |
554 | ||
555 | return ret; | |
556 | } | |
557 | ||
558 | static void applesmc_destroy_smcreg(void) | |
559 | { | |
560 | kfree(smcreg.cache); | |
561 | smcreg.cache = NULL; | |
562 | smcreg.init_complete = false; | |
563 | } | |
564 | ||
6f2fad74 NB |
565 | /* Device model stuff */ |
566 | static int applesmc_probe(struct platform_device *dev) | |
567 | { | |
5874583d HR |
568 | int ret; |
569 | ||
570 | ret = applesmc_init_smcreg(); | |
571 | if (ret) | |
572 | return ret; | |
573 | ||
2344cd0c | 574 | applesmc_device_init(); |
6f2fad74 | 575 | |
6f2fad74 NB |
576 | return 0; |
577 | } | |
578 | ||
a976f150 HR |
579 | /* Synchronize device with memorized backlight state */ |
580 | static int applesmc_pm_resume(struct device *dev) | |
581 | { | |
40ef06f1 | 582 | if (smcreg.has_key_backlight) |
a976f150 | 583 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
584 | return 0; |
585 | } | |
586 | ||
587 | /* Reinitialize device on resume from hibernation */ | |
588 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 589 | { |
2344cd0c | 590 | applesmc_device_init(); |
a976f150 | 591 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
592 | } |
593 | ||
47145210 | 594 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
595 | .resume = applesmc_pm_resume, |
596 | .restore = applesmc_pm_restore, | |
597 | }; | |
598 | ||
6f2fad74 NB |
599 | static struct platform_driver applesmc_driver = { |
600 | .probe = applesmc_probe, | |
6f2fad74 NB |
601 | .driver = { |
602 | .name = "applesmc", | |
603 | .owner = THIS_MODULE, | |
a976f150 | 604 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
605 | }, |
606 | }; | |
607 | ||
608 | /* | |
609 | * applesmc_calibrate - Set our "resting" values. Callers must | |
610 | * hold applesmc_lock. | |
611 | */ | |
612 | static void applesmc_calibrate(void) | |
613 | { | |
edf48f3a HR |
614 | applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x); |
615 | applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y); | |
6f2fad74 NB |
616 | rest_x = -rest_x; |
617 | } | |
618 | ||
d5cf2b99 | 619 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 620 | { |
d5cf2b99 | 621 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
622 | s16 x, y; |
623 | ||
edf48f3a | 624 | if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x)) |
5874583d | 625 | return; |
edf48f3a | 626 | if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y)) |
5874583d | 627 | return; |
6f2fad74 NB |
628 | |
629 | x = -x; | |
d5cf2b99 DT |
630 | input_report_abs(idev, ABS_X, x - rest_x); |
631 | input_report_abs(idev, ABS_Y, y - rest_y); | |
632 | input_sync(idev); | |
6f2fad74 NB |
633 | } |
634 | ||
635 | /* Sysfs Files */ | |
636 | ||
fa74419b NB |
637 | static ssize_t applesmc_name_show(struct device *dev, |
638 | struct device_attribute *attr, char *buf) | |
639 | { | |
640 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
641 | } | |
642 | ||
6f2fad74 NB |
643 | static ssize_t applesmc_position_show(struct device *dev, |
644 | struct device_attribute *attr, char *buf) | |
645 | { | |
646 | int ret; | |
647 | s16 x, y, z; | |
648 | ||
edf48f3a | 649 | ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x); |
6f2fad74 NB |
650 | if (ret) |
651 | goto out; | |
edf48f3a | 652 | ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y); |
6f2fad74 NB |
653 | if (ret) |
654 | goto out; | |
edf48f3a | 655 | ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z); |
6f2fad74 NB |
656 | if (ret) |
657 | goto out; | |
658 | ||
659 | out: | |
6f2fad74 NB |
660 | if (ret) |
661 | return ret; | |
662 | else | |
663 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
664 | } | |
665 | ||
666 | static ssize_t applesmc_light_show(struct device *dev, | |
667 | struct device_attribute *attr, char *sysfsbuf) | |
668 | { | |
5874583d | 669 | const struct applesmc_entry *entry; |
8bd1a12a | 670 | static int data_length; |
6f2fad74 NB |
671 | int ret; |
672 | u8 left = 0, right = 0; | |
5874583d | 673 | u8 buffer[10]; |
6f2fad74 | 674 | |
8bd1a12a | 675 | if (!data_length) { |
5874583d HR |
676 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
677 | if (IS_ERR(entry)) | |
678 | return PTR_ERR(entry); | |
679 | if (entry->len > 10) | |
680 | return -ENXIO; | |
681 | data_length = entry->len; | |
1ee7c71b | 682 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
683 | } |
684 | ||
685 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
686 | /* newer macbooks report a single 10-bit bigendian value */ |
687 | if (data_length == 10) { | |
688 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
689 | goto out; | |
690 | } | |
6f2fad74 NB |
691 | left = buffer[2]; |
692 | if (ret) | |
693 | goto out; | |
8bd1a12a | 694 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
695 | right = buffer[2]; |
696 | ||
697 | out: | |
6f2fad74 NB |
698 | if (ret) |
699 | return ret; | |
700 | else | |
701 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
702 | } | |
703 | ||
fa5575cf AM |
704 | /* Displays sensor key as label */ |
705 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
706 | struct device_attribute *devattr, char *sysfsbuf) | |
707 | { | |
9792dadf HR |
708 | int index = smcreg.temp_begin + to_index(devattr); |
709 | const struct applesmc_entry *entry; | |
fa5575cf | 710 | |
9792dadf HR |
711 | entry = applesmc_get_entry_by_index(index); |
712 | if (IS_ERR(entry)) | |
713 | return PTR_ERR(entry); | |
714 | ||
715 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); | |
fa5575cf AM |
716 | } |
717 | ||
6f2fad74 NB |
718 | /* Displays degree Celsius * 1000 */ |
719 | static ssize_t applesmc_show_temperature(struct device *dev, | |
720 | struct device_attribute *devattr, char *sysfsbuf) | |
721 | { | |
9792dadf HR |
722 | int index = smcreg.temp_begin + to_index(devattr); |
723 | const struct applesmc_entry *entry; | |
6f2fad74 | 724 | int ret; |
b6e5122f HR |
725 | s16 value; |
726 | int temp; | |
6f2fad74 | 727 | |
9792dadf HR |
728 | entry = applesmc_get_entry_by_index(index); |
729 | if (IS_ERR(entry)) | |
730 | return PTR_ERR(entry); | |
b6e5122f | 731 | if (strcmp(entry->type, TEMP_SENSOR_TYPE)) |
dcdea261 | 732 | return -EINVAL; |
6f2fad74 | 733 | |
b6e5122f | 734 | ret = applesmc_read_s16(entry->key, &value); |
6f2fad74 NB |
735 | if (ret) |
736 | return ret; | |
9792dadf | 737 | |
b6e5122f | 738 | temp = 250 * (value >> 6); |
9792dadf | 739 | |
b6e5122f | 740 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp); |
6f2fad74 NB |
741 | } |
742 | ||
743 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
744 | struct device_attribute *attr, char *sysfsbuf) | |
745 | { | |
746 | int ret; | |
747 | unsigned int speed = 0; | |
748 | char newkey[5]; | |
749 | u8 buffer[2]; | |
6f2fad74 | 750 | |
3eba2bf7 | 751 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 752 | |
6f2fad74 NB |
753 | ret = applesmc_read_key(newkey, buffer, 2); |
754 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
755 | ||
6f2fad74 NB |
756 | if (ret) |
757 | return ret; | |
758 | else | |
759 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
760 | } | |
761 | ||
762 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
763 | struct device_attribute *attr, | |
764 | const char *sysfsbuf, size_t count) | |
765 | { | |
766 | int ret; | |
2bfe8148 | 767 | unsigned long speed; |
6f2fad74 NB |
768 | char newkey[5]; |
769 | u8 buffer[2]; | |
6f2fad74 | 770 | |
179c4fdb | 771 | if (kstrtoul(sysfsbuf, 10, &speed) < 0 || speed >= 0x4000) |
2bfe8148 | 772 | return -EINVAL; /* Bigger than a 14-bit value */ |
6f2fad74 | 773 | |
3eba2bf7 | 774 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 775 | |
6f2fad74 NB |
776 | buffer[0] = (speed >> 6) & 0xff; |
777 | buffer[1] = (speed << 2) & 0xff; | |
778 | ret = applesmc_write_key(newkey, buffer, 2); | |
779 | ||
6f2fad74 NB |
780 | if (ret) |
781 | return ret; | |
782 | else | |
783 | return count; | |
784 | } | |
785 | ||
786 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
3eba2bf7 | 787 | struct device_attribute *attr, char *sysfsbuf) |
6f2fad74 NB |
788 | { |
789 | int ret; | |
790 | u16 manual = 0; | |
791 | u8 buffer[2]; | |
6f2fad74 | 792 | |
6f2fad74 | 793 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
3eba2bf7 | 794 | manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; |
6f2fad74 | 795 | |
6f2fad74 NB |
796 | if (ret) |
797 | return ret; | |
798 | else | |
799 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
800 | } | |
801 | ||
802 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
3eba2bf7 | 803 | struct device_attribute *attr, |
6f2fad74 NB |
804 | const char *sysfsbuf, size_t count) |
805 | { | |
806 | int ret; | |
807 | u8 buffer[2]; | |
2bfe8148 | 808 | unsigned long input; |
6f2fad74 | 809 | u16 val; |
6f2fad74 | 810 | |
179c4fdb | 811 | if (kstrtoul(sysfsbuf, 10, &input) < 0) |
2bfe8148 | 812 | return -EINVAL; |
6f2fad74 | 813 | |
6f2fad74 NB |
814 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
815 | val = (buffer[0] << 8 | buffer[1]); | |
816 | if (ret) | |
817 | goto out; | |
818 | ||
819 | if (input) | |
3eba2bf7 | 820 | val = val | (0x01 << to_index(attr)); |
6f2fad74 | 821 | else |
3eba2bf7 | 822 | val = val & ~(0x01 << to_index(attr)); |
6f2fad74 NB |
823 | |
824 | buffer[0] = (val >> 8) & 0xFF; | |
825 | buffer[1] = val & 0xFF; | |
826 | ||
827 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
828 | ||
829 | out: | |
6f2fad74 NB |
830 | if (ret) |
831 | return ret; | |
832 | else | |
833 | return count; | |
834 | } | |
835 | ||
836 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
837 | struct device_attribute *attr, char *sysfsbuf) | |
838 | { | |
839 | int ret; | |
840 | char newkey[5]; | |
841 | u8 buffer[17]; | |
6f2fad74 | 842 | |
3eba2bf7 | 843 | sprintf(newkey, FAN_ID_FMT, to_index(attr)); |
6f2fad74 | 844 | |
6f2fad74 NB |
845 | ret = applesmc_read_key(newkey, buffer, 16); |
846 | buffer[16] = 0; | |
847 | ||
6f2fad74 NB |
848 | if (ret) |
849 | return ret; | |
850 | else | |
851 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
852 | } | |
853 | ||
854 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
855 | struct device_attribute *attr, char *sysfsbuf) | |
856 | { | |
857 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
858 | } | |
859 | ||
860 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
861 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
862 | { | |
6f2fad74 | 863 | applesmc_calibrate(); |
6f2fad74 NB |
864 | |
865 | return count; | |
866 | } | |
867 | ||
6f2fad74 NB |
868 | static void applesmc_backlight_set(struct work_struct *work) |
869 | { | |
a976f150 | 870 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
871 | } |
872 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
873 | ||
874 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
875 | enum led_brightness value) | |
876 | { | |
877 | int ret; | |
878 | ||
a976f150 | 879 | backlight_state[0] = value; |
6f2fad74 NB |
880 | ret = queue_work(applesmc_led_wq, &backlight_work); |
881 | ||
882 | if (debug && (!ret)) | |
883 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
884 | } | |
885 | ||
886 | static ssize_t applesmc_key_count_show(struct device *dev, | |
887 | struct device_attribute *attr, char *sysfsbuf) | |
888 | { | |
889 | int ret; | |
890 | u8 buffer[4]; | |
891 | u32 count; | |
892 | ||
6f2fad74 NB |
893 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
894 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
895 | ((u32)buffer[2]<<8) + buffer[3]; | |
896 | ||
6f2fad74 NB |
897 | if (ret) |
898 | return ret; | |
899 | else | |
900 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
901 | } | |
902 | ||
903 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
904 | struct device_attribute *attr, char *sysfsbuf) | |
905 | { | |
5874583d | 906 | const struct applesmc_entry *entry; |
6f2fad74 NB |
907 | int ret; |
908 | ||
5874583d HR |
909 | entry = applesmc_get_entry_by_index(key_at_index); |
910 | if (IS_ERR(entry)) | |
911 | return PTR_ERR(entry); | |
912 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
913 | if (ret) | |
6f2fad74 | 914 | return ret; |
6f2fad74 | 915 | |
5874583d | 916 | return entry->len; |
6f2fad74 NB |
917 | } |
918 | ||
919 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
920 | struct device_attribute *attr, char *sysfsbuf) | |
921 | { | |
5874583d | 922 | const struct applesmc_entry *entry; |
6f2fad74 | 923 | |
5874583d HR |
924 | entry = applesmc_get_entry_by_index(key_at_index); |
925 | if (IS_ERR(entry)) | |
926 | return PTR_ERR(entry); | |
6f2fad74 | 927 | |
5874583d | 928 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
929 | } |
930 | ||
931 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
932 | struct device_attribute *attr, char *sysfsbuf) | |
933 | { | |
5874583d | 934 | const struct applesmc_entry *entry; |
6f2fad74 | 935 | |
5874583d HR |
936 | entry = applesmc_get_entry_by_index(key_at_index); |
937 | if (IS_ERR(entry)) | |
938 | return PTR_ERR(entry); | |
6f2fad74 | 939 | |
5874583d | 940 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
941 | } |
942 | ||
943 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
944 | struct device_attribute *attr, char *sysfsbuf) | |
945 | { | |
5874583d | 946 | const struct applesmc_entry *entry; |
6f2fad74 | 947 | |
5874583d HR |
948 | entry = applesmc_get_entry_by_index(key_at_index); |
949 | if (IS_ERR(entry)) | |
950 | return PTR_ERR(entry); | |
6f2fad74 | 951 | |
5874583d | 952 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
953 | } |
954 | ||
955 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
956 | struct device_attribute *attr, char *sysfsbuf) | |
957 | { | |
958 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
959 | } | |
960 | ||
961 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
962 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
963 | { | |
5874583d | 964 | unsigned long newkey; |
6f2fad74 | 965 | |
179c4fdb | 966 | if (kstrtoul(sysfsbuf, 10, &newkey) < 0 |
5874583d HR |
967 | || newkey >= smcreg.key_count) |
968 | return -EINVAL; | |
6f2fad74 | 969 | |
5874583d | 970 | key_at_index = newkey; |
6f2fad74 NB |
971 | return count; |
972 | } | |
973 | ||
974 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 975 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
976 | .default_trigger = "nand-disk", |
977 | .brightness_set = applesmc_brightness_set, | |
978 | }; | |
979 | ||
0b0b5dff HR |
980 | static struct applesmc_node_group info_group[] = { |
981 | { "name", applesmc_name_show }, | |
982 | { "key_count", applesmc_key_count_show }, | |
983 | { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store }, | |
984 | { "key_at_index_name", applesmc_key_at_index_name_show }, | |
985 | { "key_at_index_type", applesmc_key_at_index_type_show }, | |
986 | { "key_at_index_data_length", applesmc_key_at_index_data_length_show }, | |
987 | { "key_at_index_data", applesmc_key_at_index_read_show }, | |
988 | { } | |
6f2fad74 NB |
989 | }; |
990 | ||
0b0b5dff HR |
991 | static struct applesmc_node_group accelerometer_group[] = { |
992 | { "position", applesmc_position_show }, | |
993 | { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store }, | |
994 | { } | |
6f2fad74 NB |
995 | }; |
996 | ||
0b0b5dff HR |
997 | static struct applesmc_node_group light_sensor_group[] = { |
998 | { "light", applesmc_light_show }, | |
999 | { } | |
1000 | }; | |
6f2fad74 | 1001 | |
3eba2bf7 HR |
1002 | static struct applesmc_node_group fan_group[] = { |
1003 | { "fan%d_label", applesmc_show_fan_position }, | |
1004 | { "fan%d_input", applesmc_show_fan_speed, NULL, 0 }, | |
1005 | { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 }, | |
1006 | { "fan%d_max", applesmc_show_fan_speed, NULL, 2 }, | |
1007 | { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 }, | |
1008 | { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 }, | |
1009 | { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual }, | |
1010 | { } | |
6f2fad74 NB |
1011 | }; |
1012 | ||
9792dadf HR |
1013 | static struct applesmc_node_group temp_group[] = { |
1014 | { "temp%d_label", applesmc_show_sensor_label }, | |
1015 | { "temp%d_input", applesmc_show_temperature }, | |
1016 | { } | |
fa5575cf AM |
1017 | }; |
1018 | ||
6f2fad74 NB |
1019 | /* Module stuff */ |
1020 | ||
9792dadf HR |
1021 | /* |
1022 | * applesmc_destroy_nodes - remove files and free associated memory | |
1023 | */ | |
1024 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1025 | { | |
1026 | struct applesmc_node_group *grp; | |
1027 | struct applesmc_dev_attr *node; | |
1028 | ||
1029 | for (grp = groups; grp->nodes; grp++) { | |
1030 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1031 | sysfs_remove_file(&pdev->dev.kobj, | |
1032 | &node->sda.dev_attr.attr); | |
1033 | kfree(grp->nodes); | |
1034 | grp->nodes = NULL; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | /* | |
1039 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1040 | */ | |
1041 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1042 | { | |
1043 | struct applesmc_node_group *grp; | |
1044 | struct applesmc_dev_attr *node; | |
1045 | struct attribute *attr; | |
1046 | int ret, i; | |
1047 | ||
1048 | for (grp = groups; grp->format; grp++) { | |
1049 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1050 | if (!grp->nodes) { | |
1051 | ret = -ENOMEM; | |
1052 | goto out; | |
1053 | } | |
1054 | for (i = 0; i < num; i++) { | |
1055 | node = &grp->nodes[i]; | |
1056 | sprintf(node->name, grp->format, i + 1); | |
3eba2bf7 | 1057 | node->sda.index = (grp->option << 16) | (i & 0xffff); |
9792dadf HR |
1058 | node->sda.dev_attr.show = grp->show; |
1059 | node->sda.dev_attr.store = grp->store; | |
1060 | attr = &node->sda.dev_attr.attr; | |
9d1f8a40 | 1061 | sysfs_attr_init(attr); |
9792dadf HR |
1062 | attr->name = node->name; |
1063 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1064 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1065 | if (ret) { | |
1066 | attr->name = NULL; | |
1067 | goto out; | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | return 0; | |
1073 | out: | |
1074 | applesmc_destroy_nodes(groups); | |
1075 | return ret; | |
1076 | } | |
1077 | ||
6f2fad74 NB |
1078 | /* Create accelerometer ressources */ |
1079 | static int applesmc_create_accelerometer(void) | |
1080 | { | |
d5cf2b99 | 1081 | struct input_dev *idev; |
6f2fad74 NB |
1082 | int ret; |
1083 | ||
0b0b5dff HR |
1084 | if (!smcreg.has_accelerometer) |
1085 | return 0; | |
1086 | ||
1087 | ret = applesmc_create_nodes(accelerometer_group, 1); | |
6f2fad74 NB |
1088 | if (ret) |
1089 | goto out; | |
1090 | ||
d5cf2b99 | 1091 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1092 | if (!applesmc_idev) { |
1093 | ret = -ENOMEM; | |
1094 | goto out_sysfs; | |
1095 | } | |
1096 | ||
d5cf2b99 DT |
1097 | applesmc_idev->poll = applesmc_idev_poll; |
1098 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1099 | ||
6f2fad74 NB |
1100 | /* initial calibrate for the input device */ |
1101 | applesmc_calibrate(); | |
1102 | ||
d5cf2b99 DT |
1103 | /* initialize the input device */ |
1104 | idev = applesmc_idev->input; | |
1105 | idev->name = "applesmc"; | |
1106 | idev->id.bustype = BUS_HOST; | |
1107 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1108 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1109 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1110 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1111 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1112 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1113 | ||
d5cf2b99 | 1114 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1115 | if (ret) |
1116 | goto out_idev; | |
1117 | ||
6f2fad74 NB |
1118 | return 0; |
1119 | ||
1120 | out_idev: | |
d5cf2b99 | 1121 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1122 | |
1123 | out_sysfs: | |
0b0b5dff | 1124 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 NB |
1125 | |
1126 | out: | |
1ee7c71b | 1127 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1128 | return ret; |
1129 | } | |
1130 | ||
1131 | /* Release all ressources used by the accelerometer */ | |
1132 | static void applesmc_release_accelerometer(void) | |
1133 | { | |
0b0b5dff HR |
1134 | if (!smcreg.has_accelerometer) |
1135 | return; | |
d5cf2b99 DT |
1136 | input_unregister_polled_device(applesmc_idev); |
1137 | input_free_polled_device(applesmc_idev); | |
0b0b5dff | 1138 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 | 1139 | } |
0b0b5dff HR |
1140 | |
1141 | static int applesmc_create_light_sensor(void) | |
1142 | { | |
1143 | if (!smcreg.num_light_sensors) | |
1144 | return 0; | |
1145 | return applesmc_create_nodes(light_sensor_group, 1); | |
1146 | } | |
1147 | ||
1148 | static void applesmc_release_light_sensor(void) | |
1149 | { | |
1150 | if (!smcreg.num_light_sensors) | |
1151 | return; | |
1152 | applesmc_destroy_nodes(light_sensor_group); | |
1153 | } | |
1154 | ||
1155 | static int applesmc_create_key_backlight(void) | |
1156 | { | |
1157 | if (!smcreg.has_key_backlight) | |
1158 | return 0; | |
1159 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1160 | if (!applesmc_led_wq) | |
1161 | return -ENOMEM; | |
1162 | return led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1163 | } | |
1164 | ||
1165 | static void applesmc_release_key_backlight(void) | |
1166 | { | |
1167 | if (!smcreg.has_key_backlight) | |
1168 | return; | |
1169 | led_classdev_unregister(&applesmc_backlight); | |
1170 | destroy_workqueue(applesmc_led_wq); | |
1171 | } | |
1172 | ||
40ef06f1 HR |
1173 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1174 | { | |
1175 | return 1; | |
1176 | } | |
6f2fad74 | 1177 | |
85ebfd3e GR |
1178 | /* |
1179 | * Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1180 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". | |
1181 | */ | |
6f2fad74 | 1182 | static __initdata struct dmi_system_id applesmc_whitelist[] = { |
f5274c97 HR |
1183 | { applesmc_dmi_match, "Apple MacBook Air", { |
1184 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1185 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1186 | }, |
6f2fad74 | 1187 | { applesmc_dmi_match, "Apple MacBook Pro", { |
2bfe8148 GR |
1188 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1189 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro") }, | |
40ef06f1 | 1190 | }, |
cd19ba13 | 1191 | { applesmc_dmi_match, "Apple MacBook", { |
2bfe8148 GR |
1192 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1193 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBook") }, | |
40ef06f1 | 1194 | }, |
6f2fad74 | 1195 | { applesmc_dmi_match, "Apple Macmini", { |
2bfe8148 GR |
1196 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1197 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") }, | |
40ef06f1 | 1198 | }, |
45a3a36b HR |
1199 | { applesmc_dmi_match, "Apple MacPro", { |
1200 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1201 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1202 | }, |
9f86f28d | 1203 | { applesmc_dmi_match, "Apple iMac", { |
2bfe8148 GR |
1204 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1205 | DMI_MATCH(DMI_PRODUCT_NAME, "iMac") }, | |
40ef06f1 | 1206 | }, |
6f2fad74 NB |
1207 | { .ident = NULL } |
1208 | }; | |
1209 | ||
1210 | static int __init applesmc_init(void) | |
1211 | { | |
1212 | int ret; | |
6f2fad74 | 1213 | |
6f2fad74 | 1214 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1215 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1216 | ret = -ENODEV; |
1217 | goto out; | |
1218 | } | |
1219 | ||
1220 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1221 | "applesmc")) { | |
1222 | ret = -ENXIO; | |
1223 | goto out; | |
1224 | } | |
1225 | ||
1226 | ret = platform_driver_register(&applesmc_driver); | |
1227 | if (ret) | |
1228 | goto out_region; | |
1229 | ||
ddfbf2af JD |
1230 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1231 | NULL, 0); | |
6f2fad74 NB |
1232 | if (IS_ERR(pdev)) { |
1233 | ret = PTR_ERR(pdev); | |
1234 | goto out_driver; | |
1235 | } | |
1236 | ||
5874583d HR |
1237 | /* create register cache */ |
1238 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1239 | if (ret) |
1240 | goto out_device; | |
fa74419b | 1241 | |
0b0b5dff | 1242 | ret = applesmc_create_nodes(info_group, 1); |
5874583d HR |
1243 | if (ret) |
1244 | goto out_smcreg; | |
1245 | ||
3eba2bf7 HR |
1246 | ret = applesmc_create_nodes(fan_group, smcreg.fan_count); |
1247 | if (ret) | |
1248 | goto out_info; | |
6f2fad74 | 1249 | |
9792dadf HR |
1250 | ret = applesmc_create_nodes(temp_group, smcreg.temp_count); |
1251 | if (ret) | |
1252 | goto out_fans; | |
6f2fad74 | 1253 | |
0b0b5dff HR |
1254 | ret = applesmc_create_accelerometer(); |
1255 | if (ret) | |
1256 | goto out_temperature; | |
6f2fad74 | 1257 | |
0b0b5dff HR |
1258 | ret = applesmc_create_light_sensor(); |
1259 | if (ret) | |
1260 | goto out_accelerometer; | |
6f2fad74 | 1261 | |
0b0b5dff HR |
1262 | ret = applesmc_create_key_backlight(); |
1263 | if (ret) | |
1264 | goto out_light_sysfs; | |
6f2fad74 | 1265 | |
1beeffe4 TJ |
1266 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1267 | if (IS_ERR(hwmon_dev)) { | |
1268 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1269 | goto out_light_ledclass; |
1270 | } | |
1271 | ||
6f2fad74 NB |
1272 | return 0; |
1273 | ||
1274 | out_light_ledclass: | |
0b0b5dff | 1275 | applesmc_release_key_backlight(); |
6f2fad74 | 1276 | out_light_sysfs: |
0b0b5dff | 1277 | applesmc_release_light_sensor(); |
6f2fad74 | 1278 | out_accelerometer: |
0b0b5dff | 1279 | applesmc_release_accelerometer(); |
6f2fad74 | 1280 | out_temperature: |
9792dadf | 1281 | applesmc_destroy_nodes(temp_group); |
0559a538 | 1282 | out_fans: |
3eba2bf7 HR |
1283 | applesmc_destroy_nodes(fan_group); |
1284 | out_info: | |
0b0b5dff | 1285 | applesmc_destroy_nodes(info_group); |
5874583d HR |
1286 | out_smcreg: |
1287 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1288 | out_device: |
1289 | platform_device_unregister(pdev); | |
1290 | out_driver: | |
1291 | platform_driver_unregister(&applesmc_driver); | |
1292 | out_region: | |
1293 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1294 | out: | |
1ee7c71b | 1295 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1296 | return ret; |
1297 | } | |
1298 | ||
1299 | static void __exit applesmc_exit(void) | |
1300 | { | |
1beeffe4 | 1301 | hwmon_device_unregister(hwmon_dev); |
0b0b5dff HR |
1302 | applesmc_release_key_backlight(); |
1303 | applesmc_release_light_sensor(); | |
1304 | applesmc_release_accelerometer(); | |
9792dadf | 1305 | applesmc_destroy_nodes(temp_group); |
3eba2bf7 | 1306 | applesmc_destroy_nodes(fan_group); |
0b0b5dff | 1307 | applesmc_destroy_nodes(info_group); |
5874583d | 1308 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1309 | platform_device_unregister(pdev); |
1310 | platform_driver_unregister(&applesmc_driver); | |
1311 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
6f2fad74 NB |
1312 | } |
1313 | ||
1314 | module_init(applesmc_init); | |
1315 | module_exit(applesmc_exit); | |
1316 | ||
1317 | MODULE_AUTHOR("Nicolas Boichat"); | |
1318 | MODULE_DESCRIPTION("Apple SMC"); | |
1319 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1320 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |