Commit | Line | Data |
---|---|---|
6f2fad74 NB |
1 | /* |
2 | * drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature | |
3 | * sensors, fan control, keyboard backlight control) used in Intel-based Apple | |
4 | * computers. | |
5 | * | |
6 | * Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch> | |
41e71f97 | 7 | * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se> |
6f2fad74 NB |
8 | * |
9 | * Based on hdaps.c driver: | |
10 | * Copyright (C) 2005 Robert Love <rml@novell.com> | |
aa8521ec | 11 | * Copyright (C) 2005 Jesper Juhl <jj@chaosbits.net> |
6f2fad74 NB |
12 | * |
13 | * Fan control based on smcFanControl: | |
14 | * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com> | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify it | |
17 | * under the terms of the GNU General Public License v2 as published by the | |
18 | * Free Software Foundation. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
21 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
22 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
23 | * more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License along with | |
26 | * this program; if not, write to the Free Software Foundation, Inc., | |
27 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | |
28 | */ | |
29 | ||
1ee7c71b JP |
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | ||
6f2fad74 NB |
32 | #include <linux/delay.h> |
33 | #include <linux/platform_device.h> | |
d5cf2b99 | 34 | #include <linux/input-polldev.h> |
6f2fad74 | 35 | #include <linux/kernel.h> |
5874583d | 36 | #include <linux/slab.h> |
6f2fad74 NB |
37 | #include <linux/module.h> |
38 | #include <linux/timer.h> | |
39 | #include <linux/dmi.h> | |
40 | #include <linux/mutex.h> | |
41 | #include <linux/hwmon-sysfs.h> | |
6055fae8 | 42 | #include <linux/io.h> |
6f2fad74 NB |
43 | #include <linux/leds.h> |
44 | #include <linux/hwmon.h> | |
45 | #include <linux/workqueue.h> | |
fa845740 | 46 | #include <linux/err.h> |
6f2fad74 NB |
47 | |
48 | /* data port used by Apple SMC */ | |
49 | #define APPLESMC_DATA_PORT 0x300 | |
50 | /* command/status port used by Apple SMC */ | |
51 | #define APPLESMC_CMD_PORT 0x304 | |
52 | ||
53 | #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ | |
54 | ||
55 | #define APPLESMC_MAX_DATA_LENGTH 32 | |
56 | ||
521cf648 | 57 | /* wait up to 128 ms for a status change. */ |
a332bf9a | 58 | #define APPLESMC_MIN_WAIT 0x0010 |
829917cd | 59 | #define APPLESMC_RETRY_WAIT 0x0100 |
521cf648 | 60 | #define APPLESMC_MAX_WAIT 0x20000 |
8c9398d1 | 61 | |
6f2fad74 NB |
62 | #define APPLESMC_READ_CMD 0x10 |
63 | #define APPLESMC_WRITE_CMD 0x11 | |
64 | #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 | |
65 | #define APPLESMC_GET_KEY_TYPE_CMD 0x13 | |
66 | ||
67 | #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */ | |
68 | ||
8bd1a12a HR |
69 | #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */ |
70 | #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */ | |
d5cf2b99 | 71 | #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */ |
6f2fad74 | 72 | |
d5cf2b99 | 73 | #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */ |
6f2fad74 NB |
74 | |
75 | #define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */ | |
76 | #define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */ | |
77 | #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */ | |
78 | #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */ | |
79 | ||
80 | #define FANS_COUNT "FNum" /* r-o ui8 */ | |
81 | #define FANS_MANUAL "FS! " /* r-w ui16 */ | |
3eba2bf7 | 82 | #define FAN_ID_FMT "F%dID" /* r-o char[16] */ |
6f2fad74 | 83 | |
b6e5122f HR |
84 | #define TEMP_SENSOR_TYPE "sp78" |
85 | ||
6f2fad74 | 86 | /* List of keys used to read/write fan speeds */ |
3eba2bf7 HR |
87 | static const char *const fan_speed_fmt[] = { |
88 | "F%dAc", /* actual speed */ | |
89 | "F%dMn", /* minimum speed (rw) */ | |
90 | "F%dMx", /* maximum speed */ | |
91 | "F%dSf", /* safe speed - not all models */ | |
92 | "F%dTg", /* target speed (manual: rw) */ | |
6f2fad74 NB |
93 | }; |
94 | ||
95 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
96 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
97 | ||
d5cf2b99 | 98 | #define APPLESMC_POLL_INTERVAL 50 /* msecs */ |
6f2fad74 NB |
99 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ |
100 | #define APPLESMC_INPUT_FLAT 4 | |
101 | ||
3eba2bf7 HR |
102 | #define to_index(attr) (to_sensor_dev_attr(attr)->index & 0xffff) |
103 | #define to_option(attr) (to_sensor_dev_attr(attr)->index >> 16) | |
9792dadf | 104 | |
9792dadf HR |
105 | /* Dynamic device node attributes */ |
106 | struct applesmc_dev_attr { | |
107 | struct sensor_device_attribute sda; /* hwmon attributes */ | |
108 | char name[32]; /* room for node file name */ | |
109 | }; | |
110 | ||
111 | /* Dynamic device node group */ | |
112 | struct applesmc_node_group { | |
113 | char *format; /* format string */ | |
114 | void *show; /* show function */ | |
115 | void *store; /* store function */ | |
3eba2bf7 | 116 | int option; /* function argument */ |
9792dadf HR |
117 | struct applesmc_dev_attr *nodes; /* dynamic node array */ |
118 | }; | |
119 | ||
5874583d HR |
120 | /* AppleSMC entry - cached register information */ |
121 | struct applesmc_entry { | |
122 | char key[5]; /* four-letter key code */ | |
123 | u8 valid; /* set when entry is successfully read once */ | |
124 | u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */ | |
125 | char type[5]; /* four-letter type code */ | |
126 | u8 flags; /* 0x10: func; 0x40: write; 0x80: read */ | |
127 | }; | |
128 | ||
129 | /* Register lookup and registers common to all SMCs */ | |
130 | static struct applesmc_registers { | |
131 | struct mutex mutex; /* register read/write mutex */ | |
132 | unsigned int key_count; /* number of SMC registers */ | |
3eba2bf7 | 133 | unsigned int fan_count; /* number of fans */ |
9792dadf HR |
134 | unsigned int temp_count; /* number of temperature registers */ |
135 | unsigned int temp_begin; /* temperature lower index bound */ | |
136 | unsigned int temp_end; /* temperature upper index bound */ | |
e30bca12 | 137 | unsigned int index_count; /* size of temperature index array */ |
40ef06f1 HR |
138 | int num_light_sensors; /* number of light sensors */ |
139 | bool has_accelerometer; /* has motion sensor */ | |
140 | bool has_key_backlight; /* has keyboard backlight */ | |
5874583d HR |
141 | bool init_complete; /* true when fully initialized */ |
142 | struct applesmc_entry *cache; /* cached key entries */ | |
e30bca12 | 143 | const char **index; /* temperature key index */ |
5874583d HR |
144 | } smcreg = { |
145 | .mutex = __MUTEX_INITIALIZER(smcreg.mutex), | |
146 | }; | |
147 | ||
6f2fad74 NB |
148 | static const int debug; |
149 | static struct platform_device *pdev; | |
150 | static s16 rest_x; | |
151 | static s16 rest_y; | |
a976f150 HR |
152 | static u8 backlight_state[2]; |
153 | ||
1beeffe4 | 154 | static struct device *hwmon_dev; |
d5cf2b99 | 155 | static struct input_polled_dev *applesmc_idev; |
6f2fad74 | 156 | |
6f2fad74 NB |
157 | /* |
158 | * Last index written to key_at_index sysfs file, and value to use for all other | |
159 | * key_at_index_* sysfs files. | |
160 | */ | |
161 | static unsigned int key_at_index; | |
162 | ||
163 | static struct workqueue_struct *applesmc_led_wq; | |
164 | ||
165 | /* | |
829917cd | 166 | * wait_read - Wait for a byte to appear on SMC port. Callers must |
6f2fad74 NB |
167 | * hold applesmc_lock. |
168 | */ | |
829917cd | 169 | static int wait_read(void) |
6f2fad74 | 170 | { |
829917cd | 171 | u8 status; |
8c9398d1 | 172 | int us; |
8c9398d1 HR |
173 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
174 | udelay(us); | |
829917cd HR |
175 | status = inb(APPLESMC_CMD_PORT); |
176 | /* read: wait for smc to settle */ | |
177 | if (status & 0x01) | |
6f2fad74 | 178 | return 0; |
6f2fad74 NB |
179 | } |
180 | ||
829917cd | 181 | pr_warn("wait_read() fail: 0x%02x\n", status); |
6f2fad74 NB |
182 | return -EIO; |
183 | } | |
184 | ||
84d2d7f2 | 185 | /* |
829917cd HR |
186 | * send_byte - Write to SMC port, retrying when necessary. Callers |
187 | * must hold applesmc_lock. | |
84d2d7f2 | 188 | */ |
829917cd | 189 | static int send_byte(u8 cmd, u16 port) |
84d2d7f2 | 190 | { |
829917cd | 191 | u8 status; |
8c9398d1 | 192 | int us; |
829917cd HR |
193 | |
194 | outb(cmd, port); | |
8c9398d1 | 195 | for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) { |
8c9398d1 | 196 | udelay(us); |
829917cd HR |
197 | status = inb(APPLESMC_CMD_PORT); |
198 | /* write: wait for smc to settle */ | |
199 | if (status & 0x02) | |
200 | continue; | |
201 | /* ready: cmd accepted, return */ | |
202 | if (status & 0x04) | |
84d2d7f2 | 203 | return 0; |
829917cd HR |
204 | /* timeout: give up */ |
205 | if (us << 1 == APPLESMC_MAX_WAIT) | |
206 | break; | |
207 | /* busy: long wait and resend */ | |
208 | udelay(APPLESMC_RETRY_WAIT); | |
209 | outb(cmd, port); | |
84d2d7f2 | 210 | } |
829917cd HR |
211 | |
212 | pr_warn("send_byte(0x%02x, 0x%04x) fail: 0x%02x\n", cmd, port, status); | |
84d2d7f2 HR |
213 | return -EIO; |
214 | } | |
215 | ||
829917cd HR |
216 | static int send_command(u8 cmd) |
217 | { | |
218 | return send_byte(cmd, APPLESMC_CMD_PORT); | |
219 | } | |
220 | ||
5874583d | 221 | static int send_argument(const char *key) |
6f2fad74 NB |
222 | { |
223 | int i; | |
224 | ||
829917cd HR |
225 | for (i = 0; i < 4; i++) |
226 | if (send_byte(key[i], APPLESMC_DATA_PORT)) | |
6f2fad74 | 227 | return -EIO; |
5874583d HR |
228 | return 0; |
229 | } | |
230 | ||
231 | static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) | |
232 | { | |
25f2bd7f | 233 | u8 status, data = 0; |
5874583d HR |
234 | int i; |
235 | ||
236 | if (send_command(cmd) || send_argument(key)) { | |
ac852edb | 237 | pr_warn("%.4s: read arg fail\n", key); |
5874583d HR |
238 | return -EIO; |
239 | } | |
6f2fad74 | 240 | |
25f2bd7f | 241 | /* This has no effect on newer (2012) SMCs */ |
829917cd HR |
242 | if (send_byte(len, APPLESMC_DATA_PORT)) { |
243 | pr_warn("%.4s: read len fail\n", key); | |
244 | return -EIO; | |
245 | } | |
6f2fad74 NB |
246 | |
247 | for (i = 0; i < len; i++) { | |
829917cd HR |
248 | if (wait_read()) { |
249 | pr_warn("%.4s: read data[%d] fail\n", key, i); | |
6f2fad74 | 250 | return -EIO; |
5874583d | 251 | } |
6f2fad74 | 252 | buffer[i] = inb(APPLESMC_DATA_PORT); |
6f2fad74 | 253 | } |
6f2fad74 | 254 | |
25f2bd7f HR |
255 | /* Read the data port until bit0 is cleared */ |
256 | for (i = 0; i < 16; i++) { | |
257 | udelay(APPLESMC_MIN_WAIT); | |
258 | status = inb(APPLESMC_CMD_PORT); | |
259 | if (!(status & 0x01)) | |
260 | break; | |
261 | data = inb(APPLESMC_DATA_PORT); | |
262 | } | |
263 | if (i) | |
264 | pr_warn("flushed %d bytes, last value is: %d\n", i, data); | |
265 | ||
6f2fad74 NB |
266 | return 0; |
267 | } | |
268 | ||
5874583d | 269 | static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len) |
6f2fad74 NB |
270 | { |
271 | int i; | |
272 | ||
5874583d HR |
273 | if (send_command(cmd) || send_argument(key)) { |
274 | pr_warn("%s: write arg fail\n", key); | |
6f2fad74 | 275 | return -EIO; |
6f2fad74 NB |
276 | } |
277 | ||
829917cd HR |
278 | if (send_byte(len, APPLESMC_DATA_PORT)) { |
279 | pr_warn("%.4s: write len fail\n", key); | |
280 | return -EIO; | |
281 | } | |
6f2fad74 NB |
282 | |
283 | for (i = 0; i < len; i++) { | |
829917cd | 284 | if (send_byte(buffer[i], APPLESMC_DATA_PORT)) { |
5874583d | 285 | pr_warn("%s: write data fail\n", key); |
6f2fad74 | 286 | return -EIO; |
5874583d | 287 | } |
6f2fad74 NB |
288 | } |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
5874583d HR |
293 | static int read_register_count(unsigned int *count) |
294 | { | |
295 | __be32 be; | |
296 | int ret; | |
297 | ||
298 | ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4); | |
299 | if (ret) | |
300 | return ret; | |
301 | ||
302 | *count = be32_to_cpu(be); | |
303 | return 0; | |
304 | } | |
305 | ||
6f2fad74 | 306 | /* |
5874583d HR |
307 | * Serialized I/O |
308 | * | |
309 | * Returns zero on success or a negative error on failure. | |
310 | * All functions below are concurrency safe - callers should NOT hold lock. | |
6f2fad74 | 311 | */ |
5874583d HR |
312 | |
313 | static int applesmc_read_entry(const struct applesmc_entry *entry, | |
314 | u8 *buf, u8 len) | |
6f2fad74 | 315 | { |
5874583d | 316 | int ret; |
6f2fad74 | 317 | |
5874583d HR |
318 | if (entry->len != len) |
319 | return -EINVAL; | |
320 | mutex_lock(&smcreg.mutex); | |
321 | ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len); | |
322 | mutex_unlock(&smcreg.mutex); | |
6f2fad74 | 323 | |
5874583d HR |
324 | return ret; |
325 | } | |
326 | ||
327 | static int applesmc_write_entry(const struct applesmc_entry *entry, | |
328 | const u8 *buf, u8 len) | |
329 | { | |
330 | int ret; | |
331 | ||
332 | if (entry->len != len) | |
333 | return -EINVAL; | |
334 | mutex_lock(&smcreg.mutex); | |
335 | ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len); | |
336 | mutex_unlock(&smcreg.mutex); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | static const struct applesmc_entry *applesmc_get_entry_by_index(int index) | |
341 | { | |
342 | struct applesmc_entry *cache = &smcreg.cache[index]; | |
343 | u8 key[4], info[6]; | |
344 | __be32 be; | |
345 | int ret = 0; | |
346 | ||
347 | if (cache->valid) | |
348 | return cache; | |
349 | ||
350 | mutex_lock(&smcreg.mutex); | |
351 | ||
352 | if (cache->valid) | |
353 | goto out; | |
354 | be = cpu_to_be32(index); | |
355 | ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4); | |
356 | if (ret) | |
357 | goto out; | |
358 | ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6); | |
359 | if (ret) | |
360 | goto out; | |
361 | ||
362 | memcpy(cache->key, key, 4); | |
363 | cache->len = info[0]; | |
364 | memcpy(cache->type, &info[1], 4); | |
365 | cache->flags = info[5]; | |
366 | cache->valid = 1; | |
367 | ||
368 | out: | |
369 | mutex_unlock(&smcreg.mutex); | |
370 | if (ret) | |
371 | return ERR_PTR(ret); | |
372 | return cache; | |
373 | } | |
374 | ||
375 | static int applesmc_get_lower_bound(unsigned int *lo, const char *key) | |
376 | { | |
377 | int begin = 0, end = smcreg.key_count; | |
378 | const struct applesmc_entry *entry; | |
379 | ||
380 | while (begin != end) { | |
381 | int middle = begin + (end - begin) / 2; | |
382 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
383 | if (IS_ERR(entry)) { |
384 | *lo = 0; | |
5874583d | 385 | return PTR_ERR(entry); |
0fc86eca | 386 | } |
5874583d HR |
387 | if (strcmp(entry->key, key) < 0) |
388 | begin = middle + 1; | |
389 | else | |
390 | end = middle; | |
6f2fad74 NB |
391 | } |
392 | ||
5874583d HR |
393 | *lo = begin; |
394 | return 0; | |
395 | } | |
6f2fad74 | 396 | |
5874583d HR |
397 | static int applesmc_get_upper_bound(unsigned int *hi, const char *key) |
398 | { | |
399 | int begin = 0, end = smcreg.key_count; | |
400 | const struct applesmc_entry *entry; | |
401 | ||
402 | while (begin != end) { | |
403 | int middle = begin + (end - begin) / 2; | |
404 | entry = applesmc_get_entry_by_index(middle); | |
0fc86eca HR |
405 | if (IS_ERR(entry)) { |
406 | *hi = smcreg.key_count; | |
5874583d | 407 | return PTR_ERR(entry); |
0fc86eca | 408 | } |
5874583d HR |
409 | if (strcmp(key, entry->key) < 0) |
410 | end = middle; | |
411 | else | |
412 | begin = middle + 1; | |
6f2fad74 | 413 | } |
6f2fad74 | 414 | |
5874583d | 415 | *hi = begin; |
6f2fad74 NB |
416 | return 0; |
417 | } | |
418 | ||
5874583d | 419 | static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key) |
6f2fad74 | 420 | { |
5874583d HR |
421 | int begin, end; |
422 | int ret; | |
6f2fad74 | 423 | |
5874583d HR |
424 | ret = applesmc_get_lower_bound(&begin, key); |
425 | if (ret) | |
426 | return ERR_PTR(ret); | |
427 | ret = applesmc_get_upper_bound(&end, key); | |
428 | if (ret) | |
429 | return ERR_PTR(ret); | |
430 | if (end - begin != 1) | |
431 | return ERR_PTR(-EINVAL); | |
6f2fad74 | 432 | |
5874583d HR |
433 | return applesmc_get_entry_by_index(begin); |
434 | } | |
6f2fad74 | 435 | |
5874583d HR |
436 | static int applesmc_read_key(const char *key, u8 *buffer, u8 len) |
437 | { | |
438 | const struct applesmc_entry *entry; | |
6f2fad74 | 439 | |
5874583d HR |
440 | entry = applesmc_get_entry_by_key(key); |
441 | if (IS_ERR(entry)) | |
442 | return PTR_ERR(entry); | |
6f2fad74 | 443 | |
5874583d HR |
444 | return applesmc_read_entry(entry, buffer, len); |
445 | } | |
446 | ||
447 | static int applesmc_write_key(const char *key, const u8 *buffer, u8 len) | |
448 | { | |
449 | const struct applesmc_entry *entry; | |
450 | ||
451 | entry = applesmc_get_entry_by_key(key); | |
452 | if (IS_ERR(entry)) | |
453 | return PTR_ERR(entry); | |
454 | ||
455 | return applesmc_write_entry(entry, buffer, len); | |
6f2fad74 NB |
456 | } |
457 | ||
40ef06f1 HR |
458 | static int applesmc_has_key(const char *key, bool *value) |
459 | { | |
460 | const struct applesmc_entry *entry; | |
461 | ||
462 | entry = applesmc_get_entry_by_key(key); | |
463 | if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL) | |
464 | return PTR_ERR(entry); | |
465 | ||
466 | *value = !IS_ERR(entry); | |
467 | return 0; | |
468 | } | |
469 | ||
6f2fad74 | 470 | /* |
edf48f3a | 471 | * applesmc_read_s16 - Read 16-bit signed big endian register |
6f2fad74 | 472 | */ |
edf48f3a | 473 | static int applesmc_read_s16(const char *key, s16 *value) |
6f2fad74 NB |
474 | { |
475 | u8 buffer[2]; | |
476 | int ret; | |
477 | ||
edf48f3a HR |
478 | ret = applesmc_read_key(key, buffer, 2); |
479 | if (ret) | |
480 | return ret; | |
6f2fad74 NB |
481 | |
482 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
edf48f3a | 483 | return 0; |
6f2fad74 NB |
484 | } |
485 | ||
486 | /* | |
2344cd0c | 487 | * applesmc_device_init - initialize the accelerometer. Can sleep. |
6f2fad74 | 488 | */ |
2344cd0c | 489 | static void applesmc_device_init(void) |
6f2fad74 | 490 | { |
2344cd0c | 491 | int total; |
6f2fad74 NB |
492 | u8 buffer[2]; |
493 | ||
40ef06f1 | 494 | if (!smcreg.has_accelerometer) |
2344cd0c | 495 | return; |
6f2fad74 | 496 | |
6f2fad74 | 497 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { |
6f2fad74 | 498 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && |
2344cd0c | 499 | (buffer[0] != 0x00 || buffer[1] != 0x00)) |
5874583d | 500 | return; |
6f2fad74 NB |
501 | buffer[0] = 0xe0; |
502 | buffer[1] = 0x00; | |
503 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
504 | msleep(INIT_WAIT_MSECS); | |
505 | } | |
506 | ||
1ee7c71b | 507 | pr_warn("failed to init the device\n"); |
6f2fad74 NB |
508 | } |
509 | ||
e30bca12 HR |
510 | static int applesmc_init_index(struct applesmc_registers *s) |
511 | { | |
512 | const struct applesmc_entry *entry; | |
513 | unsigned int i; | |
514 | ||
515 | if (s->index) | |
516 | return 0; | |
517 | ||
518 | s->index = kcalloc(s->temp_count, sizeof(s->index[0]), GFP_KERNEL); | |
519 | if (!s->index) | |
520 | return -ENOMEM; | |
521 | ||
522 | for (i = s->temp_begin; i < s->temp_end; i++) { | |
523 | entry = applesmc_get_entry_by_index(i); | |
524 | if (IS_ERR(entry)) | |
525 | continue; | |
526 | if (strcmp(entry->type, TEMP_SENSOR_TYPE)) | |
527 | continue; | |
528 | s->index[s->index_count++] = entry->key; | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
5874583d HR |
534 | /* |
535 | * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent. | |
536 | */ | |
537 | static int applesmc_init_smcreg_try(void) | |
538 | { | |
539 | struct applesmc_registers *s = &smcreg; | |
40ef06f1 | 540 | bool left_light_sensor, right_light_sensor; |
5f451386 | 541 | unsigned int count; |
3eba2bf7 | 542 | u8 tmp[1]; |
5874583d HR |
543 | int ret; |
544 | ||
545 | if (s->init_complete) | |
546 | return 0; | |
547 | ||
5f451386 | 548 | ret = read_register_count(&count); |
5874583d HR |
549 | if (ret) |
550 | return ret; | |
551 | ||
5f451386 HR |
552 | if (s->cache && s->key_count != count) { |
553 | pr_warn("key count changed from %d to %d\n", | |
554 | s->key_count, count); | |
555 | kfree(s->cache); | |
556 | s->cache = NULL; | |
557 | } | |
558 | s->key_count = count; | |
559 | ||
5874583d HR |
560 | if (!s->cache) |
561 | s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); | |
562 | if (!s->cache) | |
563 | return -ENOMEM; | |
564 | ||
3eba2bf7 HR |
565 | ret = applesmc_read_key(FANS_COUNT, tmp, 1); |
566 | if (ret) | |
567 | return ret; | |
568 | s->fan_count = tmp[0]; | |
569 | ||
9792dadf HR |
570 | ret = applesmc_get_lower_bound(&s->temp_begin, "T"); |
571 | if (ret) | |
572 | return ret; | |
573 | ret = applesmc_get_lower_bound(&s->temp_end, "U"); | |
574 | if (ret) | |
575 | return ret; | |
576 | s->temp_count = s->temp_end - s->temp_begin; | |
577 | ||
e30bca12 HR |
578 | ret = applesmc_init_index(s); |
579 | if (ret) | |
580 | return ret; | |
581 | ||
40ef06f1 HR |
582 | ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor); |
583 | if (ret) | |
584 | return ret; | |
585 | ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor); | |
586 | if (ret) | |
587 | return ret; | |
588 | ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer); | |
589 | if (ret) | |
590 | return ret; | |
591 | ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight); | |
592 | if (ret) | |
593 | return ret; | |
594 | ||
595 | s->num_light_sensors = left_light_sensor + right_light_sensor; | |
5874583d HR |
596 | s->init_complete = true; |
597 | ||
e30bca12 HR |
598 | pr_info("key=%d fan=%d temp=%d index=%d acc=%d lux=%d kbd=%d\n", |
599 | s->key_count, s->fan_count, s->temp_count, s->index_count, | |
40ef06f1 HR |
600 | s->has_accelerometer, |
601 | s->num_light_sensors, | |
602 | s->has_key_backlight); | |
5874583d HR |
603 | |
604 | return 0; | |
605 | } | |
606 | ||
e30bca12 HR |
607 | static void applesmc_destroy_smcreg(void) |
608 | { | |
609 | kfree(smcreg.index); | |
610 | smcreg.index = NULL; | |
611 | kfree(smcreg.cache); | |
612 | smcreg.cache = NULL; | |
613 | smcreg.init_complete = false; | |
614 | } | |
615 | ||
5874583d HR |
616 | /* |
617 | * applesmc_init_smcreg - Initialize register cache. | |
618 | * | |
619 | * Retries until initialization is successful, or the operation times out. | |
620 | * | |
621 | */ | |
622 | static int applesmc_init_smcreg(void) | |
623 | { | |
624 | int ms, ret; | |
625 | ||
626 | for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) { | |
627 | ret = applesmc_init_smcreg_try(); | |
628 | if (!ret) { | |
629 | if (ms) | |
630 | pr_info("init_smcreg() took %d ms\n", ms); | |
631 | return 0; | |
632 | } | |
633 | msleep(INIT_WAIT_MSECS); | |
634 | } | |
635 | ||
e30bca12 | 636 | applesmc_destroy_smcreg(); |
5874583d HR |
637 | |
638 | return ret; | |
639 | } | |
640 | ||
6f2fad74 NB |
641 | /* Device model stuff */ |
642 | static int applesmc_probe(struct platform_device *dev) | |
643 | { | |
5874583d HR |
644 | int ret; |
645 | ||
646 | ret = applesmc_init_smcreg(); | |
647 | if (ret) | |
648 | return ret; | |
649 | ||
2344cd0c | 650 | applesmc_device_init(); |
6f2fad74 | 651 | |
6f2fad74 NB |
652 | return 0; |
653 | } | |
654 | ||
a976f150 HR |
655 | /* Synchronize device with memorized backlight state */ |
656 | static int applesmc_pm_resume(struct device *dev) | |
657 | { | |
40ef06f1 | 658 | if (smcreg.has_key_backlight) |
a976f150 | 659 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
a976f150 HR |
660 | return 0; |
661 | } | |
662 | ||
663 | /* Reinitialize device on resume from hibernation */ | |
664 | static int applesmc_pm_restore(struct device *dev) | |
6f2fad74 | 665 | { |
2344cd0c | 666 | applesmc_device_init(); |
a976f150 | 667 | return applesmc_pm_resume(dev); |
6f2fad74 NB |
668 | } |
669 | ||
47145210 | 670 | static const struct dev_pm_ops applesmc_pm_ops = { |
a976f150 HR |
671 | .resume = applesmc_pm_resume, |
672 | .restore = applesmc_pm_restore, | |
673 | }; | |
674 | ||
6f2fad74 NB |
675 | static struct platform_driver applesmc_driver = { |
676 | .probe = applesmc_probe, | |
6f2fad74 NB |
677 | .driver = { |
678 | .name = "applesmc", | |
679 | .owner = THIS_MODULE, | |
a976f150 | 680 | .pm = &applesmc_pm_ops, |
6f2fad74 NB |
681 | }, |
682 | }; | |
683 | ||
684 | /* | |
685 | * applesmc_calibrate - Set our "resting" values. Callers must | |
686 | * hold applesmc_lock. | |
687 | */ | |
688 | static void applesmc_calibrate(void) | |
689 | { | |
edf48f3a HR |
690 | applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x); |
691 | applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y); | |
6f2fad74 NB |
692 | rest_x = -rest_x; |
693 | } | |
694 | ||
d5cf2b99 | 695 | static void applesmc_idev_poll(struct input_polled_dev *dev) |
6f2fad74 | 696 | { |
d5cf2b99 | 697 | struct input_dev *idev = dev->input; |
6f2fad74 NB |
698 | s16 x, y; |
699 | ||
edf48f3a | 700 | if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x)) |
5874583d | 701 | return; |
edf48f3a | 702 | if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y)) |
5874583d | 703 | return; |
6f2fad74 NB |
704 | |
705 | x = -x; | |
d5cf2b99 DT |
706 | input_report_abs(idev, ABS_X, x - rest_x); |
707 | input_report_abs(idev, ABS_Y, y - rest_y); | |
708 | input_sync(idev); | |
6f2fad74 NB |
709 | } |
710 | ||
711 | /* Sysfs Files */ | |
712 | ||
fa74419b NB |
713 | static ssize_t applesmc_name_show(struct device *dev, |
714 | struct device_attribute *attr, char *buf) | |
715 | { | |
716 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
717 | } | |
718 | ||
6f2fad74 NB |
719 | static ssize_t applesmc_position_show(struct device *dev, |
720 | struct device_attribute *attr, char *buf) | |
721 | { | |
722 | int ret; | |
723 | s16 x, y, z; | |
724 | ||
edf48f3a | 725 | ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x); |
6f2fad74 NB |
726 | if (ret) |
727 | goto out; | |
edf48f3a | 728 | ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y); |
6f2fad74 NB |
729 | if (ret) |
730 | goto out; | |
edf48f3a | 731 | ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z); |
6f2fad74 NB |
732 | if (ret) |
733 | goto out; | |
734 | ||
735 | out: | |
6f2fad74 NB |
736 | if (ret) |
737 | return ret; | |
738 | else | |
739 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
740 | } | |
741 | ||
742 | static ssize_t applesmc_light_show(struct device *dev, | |
743 | struct device_attribute *attr, char *sysfsbuf) | |
744 | { | |
5874583d | 745 | const struct applesmc_entry *entry; |
8bd1a12a | 746 | static int data_length; |
6f2fad74 NB |
747 | int ret; |
748 | u8 left = 0, right = 0; | |
5874583d | 749 | u8 buffer[10]; |
6f2fad74 | 750 | |
8bd1a12a | 751 | if (!data_length) { |
5874583d HR |
752 | entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY); |
753 | if (IS_ERR(entry)) | |
754 | return PTR_ERR(entry); | |
755 | if (entry->len > 10) | |
756 | return -ENXIO; | |
757 | data_length = entry->len; | |
1ee7c71b | 758 | pr_info("light sensor data length set to %d\n", data_length); |
8bd1a12a HR |
759 | } |
760 | ||
761 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); | |
c3d6362b AM |
762 | /* newer macbooks report a single 10-bit bigendian value */ |
763 | if (data_length == 10) { | |
764 | left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; | |
765 | goto out; | |
766 | } | |
6f2fad74 NB |
767 | left = buffer[2]; |
768 | if (ret) | |
769 | goto out; | |
8bd1a12a | 770 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length); |
6f2fad74 NB |
771 | right = buffer[2]; |
772 | ||
773 | out: | |
6f2fad74 NB |
774 | if (ret) |
775 | return ret; | |
776 | else | |
777 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
778 | } | |
779 | ||
fa5575cf AM |
780 | /* Displays sensor key as label */ |
781 | static ssize_t applesmc_show_sensor_label(struct device *dev, | |
782 | struct device_attribute *devattr, char *sysfsbuf) | |
783 | { | |
e30bca12 | 784 | const char *key = smcreg.index[to_index(devattr)]; |
fa5575cf | 785 | |
e30bca12 | 786 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); |
fa5575cf AM |
787 | } |
788 | ||
6f2fad74 NB |
789 | /* Displays degree Celsius * 1000 */ |
790 | static ssize_t applesmc_show_temperature(struct device *dev, | |
791 | struct device_attribute *devattr, char *sysfsbuf) | |
792 | { | |
e30bca12 | 793 | const char *key = smcreg.index[to_index(devattr)]; |
6f2fad74 | 794 | int ret; |
b6e5122f HR |
795 | s16 value; |
796 | int temp; | |
6f2fad74 | 797 | |
e30bca12 | 798 | ret = applesmc_read_s16(key, &value); |
6f2fad74 NB |
799 | if (ret) |
800 | return ret; | |
9792dadf | 801 | |
b6e5122f | 802 | temp = 250 * (value >> 6); |
9792dadf | 803 | |
b6e5122f | 804 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp); |
6f2fad74 NB |
805 | } |
806 | ||
807 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
808 | struct device_attribute *attr, char *sysfsbuf) | |
809 | { | |
810 | int ret; | |
811 | unsigned int speed = 0; | |
812 | char newkey[5]; | |
813 | u8 buffer[2]; | |
6f2fad74 | 814 | |
3eba2bf7 | 815 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 816 | |
6f2fad74 NB |
817 | ret = applesmc_read_key(newkey, buffer, 2); |
818 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
819 | ||
6f2fad74 NB |
820 | if (ret) |
821 | return ret; | |
822 | else | |
823 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
824 | } | |
825 | ||
826 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
827 | struct device_attribute *attr, | |
828 | const char *sysfsbuf, size_t count) | |
829 | { | |
830 | int ret; | |
2bfe8148 | 831 | unsigned long speed; |
6f2fad74 NB |
832 | char newkey[5]; |
833 | u8 buffer[2]; | |
6f2fad74 | 834 | |
179c4fdb | 835 | if (kstrtoul(sysfsbuf, 10, &speed) < 0 || speed >= 0x4000) |
2bfe8148 | 836 | return -EINVAL; /* Bigger than a 14-bit value */ |
6f2fad74 | 837 | |
3eba2bf7 | 838 | sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr)); |
6f2fad74 | 839 | |
6f2fad74 NB |
840 | buffer[0] = (speed >> 6) & 0xff; |
841 | buffer[1] = (speed << 2) & 0xff; | |
842 | ret = applesmc_write_key(newkey, buffer, 2); | |
843 | ||
6f2fad74 NB |
844 | if (ret) |
845 | return ret; | |
846 | else | |
847 | return count; | |
848 | } | |
849 | ||
850 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
3eba2bf7 | 851 | struct device_attribute *attr, char *sysfsbuf) |
6f2fad74 NB |
852 | { |
853 | int ret; | |
854 | u16 manual = 0; | |
855 | u8 buffer[2]; | |
6f2fad74 | 856 | |
6f2fad74 | 857 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
3eba2bf7 | 858 | manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01; |
6f2fad74 | 859 | |
6f2fad74 NB |
860 | if (ret) |
861 | return ret; | |
862 | else | |
863 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
864 | } | |
865 | ||
866 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
3eba2bf7 | 867 | struct device_attribute *attr, |
6f2fad74 NB |
868 | const char *sysfsbuf, size_t count) |
869 | { | |
870 | int ret; | |
871 | u8 buffer[2]; | |
2bfe8148 | 872 | unsigned long input; |
6f2fad74 | 873 | u16 val; |
6f2fad74 | 874 | |
179c4fdb | 875 | if (kstrtoul(sysfsbuf, 10, &input) < 0) |
2bfe8148 | 876 | return -EINVAL; |
6f2fad74 | 877 | |
6f2fad74 NB |
878 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); |
879 | val = (buffer[0] << 8 | buffer[1]); | |
880 | if (ret) | |
881 | goto out; | |
882 | ||
883 | if (input) | |
3eba2bf7 | 884 | val = val | (0x01 << to_index(attr)); |
6f2fad74 | 885 | else |
3eba2bf7 | 886 | val = val & ~(0x01 << to_index(attr)); |
6f2fad74 NB |
887 | |
888 | buffer[0] = (val >> 8) & 0xFF; | |
889 | buffer[1] = val & 0xFF; | |
890 | ||
891 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
892 | ||
893 | out: | |
6f2fad74 NB |
894 | if (ret) |
895 | return ret; | |
896 | else | |
897 | return count; | |
898 | } | |
899 | ||
900 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
901 | struct device_attribute *attr, char *sysfsbuf) | |
902 | { | |
903 | int ret; | |
904 | char newkey[5]; | |
905 | u8 buffer[17]; | |
6f2fad74 | 906 | |
3eba2bf7 | 907 | sprintf(newkey, FAN_ID_FMT, to_index(attr)); |
6f2fad74 | 908 | |
6f2fad74 NB |
909 | ret = applesmc_read_key(newkey, buffer, 16); |
910 | buffer[16] = 0; | |
911 | ||
6f2fad74 NB |
912 | if (ret) |
913 | return ret; | |
914 | else | |
915 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
916 | } | |
917 | ||
918 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
919 | struct device_attribute *attr, char *sysfsbuf) | |
920 | { | |
921 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
922 | } | |
923 | ||
924 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
925 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
926 | { | |
6f2fad74 | 927 | applesmc_calibrate(); |
6f2fad74 NB |
928 | |
929 | return count; | |
930 | } | |
931 | ||
6f2fad74 NB |
932 | static void applesmc_backlight_set(struct work_struct *work) |
933 | { | |
a976f150 | 934 | applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2); |
6f2fad74 NB |
935 | } |
936 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
937 | ||
938 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
939 | enum led_brightness value) | |
940 | { | |
941 | int ret; | |
942 | ||
a976f150 | 943 | backlight_state[0] = value; |
6f2fad74 NB |
944 | ret = queue_work(applesmc_led_wq, &backlight_work); |
945 | ||
946 | if (debug && (!ret)) | |
692fe501 | 947 | dev_dbg(led_cdev->dev, "work was already on the queue.\n"); |
6f2fad74 NB |
948 | } |
949 | ||
950 | static ssize_t applesmc_key_count_show(struct device *dev, | |
951 | struct device_attribute *attr, char *sysfsbuf) | |
952 | { | |
953 | int ret; | |
954 | u8 buffer[4]; | |
955 | u32 count; | |
956 | ||
6f2fad74 NB |
957 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); |
958 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
959 | ((u32)buffer[2]<<8) + buffer[3]; | |
960 | ||
6f2fad74 NB |
961 | if (ret) |
962 | return ret; | |
963 | else | |
964 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
965 | } | |
966 | ||
967 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
968 | struct device_attribute *attr, char *sysfsbuf) | |
969 | { | |
5874583d | 970 | const struct applesmc_entry *entry; |
6f2fad74 NB |
971 | int ret; |
972 | ||
5874583d HR |
973 | entry = applesmc_get_entry_by_index(key_at_index); |
974 | if (IS_ERR(entry)) | |
975 | return PTR_ERR(entry); | |
976 | ret = applesmc_read_entry(entry, sysfsbuf, entry->len); | |
977 | if (ret) | |
6f2fad74 | 978 | return ret; |
6f2fad74 | 979 | |
5874583d | 980 | return entry->len; |
6f2fad74 NB |
981 | } |
982 | ||
983 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
984 | struct device_attribute *attr, char *sysfsbuf) | |
985 | { | |
5874583d | 986 | const struct applesmc_entry *entry; |
6f2fad74 | 987 | |
5874583d HR |
988 | entry = applesmc_get_entry_by_index(key_at_index); |
989 | if (IS_ERR(entry)) | |
990 | return PTR_ERR(entry); | |
6f2fad74 | 991 | |
5874583d | 992 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len); |
6f2fad74 NB |
993 | } |
994 | ||
995 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
996 | struct device_attribute *attr, char *sysfsbuf) | |
997 | { | |
5874583d | 998 | const struct applesmc_entry *entry; |
6f2fad74 | 999 | |
5874583d HR |
1000 | entry = applesmc_get_entry_by_index(key_at_index); |
1001 | if (IS_ERR(entry)) | |
1002 | return PTR_ERR(entry); | |
6f2fad74 | 1003 | |
5874583d | 1004 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type); |
6f2fad74 NB |
1005 | } |
1006 | ||
1007 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
1008 | struct device_attribute *attr, char *sysfsbuf) | |
1009 | { | |
5874583d | 1010 | const struct applesmc_entry *entry; |
6f2fad74 | 1011 | |
5874583d HR |
1012 | entry = applesmc_get_entry_by_index(key_at_index); |
1013 | if (IS_ERR(entry)) | |
1014 | return PTR_ERR(entry); | |
6f2fad74 | 1015 | |
5874583d | 1016 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key); |
6f2fad74 NB |
1017 | } |
1018 | ||
1019 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
1020 | struct device_attribute *attr, char *sysfsbuf) | |
1021 | { | |
1022 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
1023 | } | |
1024 | ||
1025 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
1026 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
1027 | { | |
5874583d | 1028 | unsigned long newkey; |
6f2fad74 | 1029 | |
179c4fdb | 1030 | if (kstrtoul(sysfsbuf, 10, &newkey) < 0 |
5874583d HR |
1031 | || newkey >= smcreg.key_count) |
1032 | return -EINVAL; | |
6f2fad74 | 1033 | |
5874583d | 1034 | key_at_index = newkey; |
6f2fad74 NB |
1035 | return count; |
1036 | } | |
1037 | ||
1038 | static struct led_classdev applesmc_backlight = { | |
6c152bee | 1039 | .name = "smc::kbd_backlight", |
6f2fad74 NB |
1040 | .default_trigger = "nand-disk", |
1041 | .brightness_set = applesmc_brightness_set, | |
1042 | }; | |
1043 | ||
0b0b5dff HR |
1044 | static struct applesmc_node_group info_group[] = { |
1045 | { "name", applesmc_name_show }, | |
1046 | { "key_count", applesmc_key_count_show }, | |
1047 | { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store }, | |
1048 | { "key_at_index_name", applesmc_key_at_index_name_show }, | |
1049 | { "key_at_index_type", applesmc_key_at_index_type_show }, | |
1050 | { "key_at_index_data_length", applesmc_key_at_index_data_length_show }, | |
1051 | { "key_at_index_data", applesmc_key_at_index_read_show }, | |
1052 | { } | |
6f2fad74 NB |
1053 | }; |
1054 | ||
0b0b5dff HR |
1055 | static struct applesmc_node_group accelerometer_group[] = { |
1056 | { "position", applesmc_position_show }, | |
1057 | { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store }, | |
1058 | { } | |
6f2fad74 NB |
1059 | }; |
1060 | ||
0b0b5dff HR |
1061 | static struct applesmc_node_group light_sensor_group[] = { |
1062 | { "light", applesmc_light_show }, | |
1063 | { } | |
1064 | }; | |
6f2fad74 | 1065 | |
3eba2bf7 HR |
1066 | static struct applesmc_node_group fan_group[] = { |
1067 | { "fan%d_label", applesmc_show_fan_position }, | |
1068 | { "fan%d_input", applesmc_show_fan_speed, NULL, 0 }, | |
1069 | { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 }, | |
1070 | { "fan%d_max", applesmc_show_fan_speed, NULL, 2 }, | |
1071 | { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 }, | |
1072 | { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 }, | |
1073 | { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual }, | |
1074 | { } | |
6f2fad74 NB |
1075 | }; |
1076 | ||
9792dadf HR |
1077 | static struct applesmc_node_group temp_group[] = { |
1078 | { "temp%d_label", applesmc_show_sensor_label }, | |
1079 | { "temp%d_input", applesmc_show_temperature }, | |
1080 | { } | |
fa5575cf AM |
1081 | }; |
1082 | ||
6f2fad74 NB |
1083 | /* Module stuff */ |
1084 | ||
9792dadf HR |
1085 | /* |
1086 | * applesmc_destroy_nodes - remove files and free associated memory | |
1087 | */ | |
1088 | static void applesmc_destroy_nodes(struct applesmc_node_group *groups) | |
1089 | { | |
1090 | struct applesmc_node_group *grp; | |
1091 | struct applesmc_dev_attr *node; | |
1092 | ||
1093 | for (grp = groups; grp->nodes; grp++) { | |
1094 | for (node = grp->nodes; node->sda.dev_attr.attr.name; node++) | |
1095 | sysfs_remove_file(&pdev->dev.kobj, | |
1096 | &node->sda.dev_attr.attr); | |
1097 | kfree(grp->nodes); | |
1098 | grp->nodes = NULL; | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * applesmc_create_nodes - create a two-dimensional group of sysfs files | |
1104 | */ | |
1105 | static int applesmc_create_nodes(struct applesmc_node_group *groups, int num) | |
1106 | { | |
1107 | struct applesmc_node_group *grp; | |
1108 | struct applesmc_dev_attr *node; | |
1109 | struct attribute *attr; | |
1110 | int ret, i; | |
1111 | ||
1112 | for (grp = groups; grp->format; grp++) { | |
1113 | grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL); | |
1114 | if (!grp->nodes) { | |
1115 | ret = -ENOMEM; | |
1116 | goto out; | |
1117 | } | |
1118 | for (i = 0; i < num; i++) { | |
1119 | node = &grp->nodes[i]; | |
1120 | sprintf(node->name, grp->format, i + 1); | |
3eba2bf7 | 1121 | node->sda.index = (grp->option << 16) | (i & 0xffff); |
9792dadf HR |
1122 | node->sda.dev_attr.show = grp->show; |
1123 | node->sda.dev_attr.store = grp->store; | |
1124 | attr = &node->sda.dev_attr.attr; | |
9d1f8a40 | 1125 | sysfs_attr_init(attr); |
9792dadf HR |
1126 | attr->name = node->name; |
1127 | attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0); | |
1128 | ret = sysfs_create_file(&pdev->dev.kobj, attr); | |
1129 | if (ret) { | |
1130 | attr->name = NULL; | |
1131 | goto out; | |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | return 0; | |
1137 | out: | |
1138 | applesmc_destroy_nodes(groups); | |
1139 | return ret; | |
1140 | } | |
1141 | ||
6f2fad74 NB |
1142 | /* Create accelerometer ressources */ |
1143 | static int applesmc_create_accelerometer(void) | |
1144 | { | |
d5cf2b99 | 1145 | struct input_dev *idev; |
6f2fad74 NB |
1146 | int ret; |
1147 | ||
0b0b5dff HR |
1148 | if (!smcreg.has_accelerometer) |
1149 | return 0; | |
1150 | ||
1151 | ret = applesmc_create_nodes(accelerometer_group, 1); | |
6f2fad74 NB |
1152 | if (ret) |
1153 | goto out; | |
1154 | ||
d5cf2b99 | 1155 | applesmc_idev = input_allocate_polled_device(); |
6f2fad74 NB |
1156 | if (!applesmc_idev) { |
1157 | ret = -ENOMEM; | |
1158 | goto out_sysfs; | |
1159 | } | |
1160 | ||
d5cf2b99 DT |
1161 | applesmc_idev->poll = applesmc_idev_poll; |
1162 | applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; | |
1163 | ||
6f2fad74 NB |
1164 | /* initial calibrate for the input device */ |
1165 | applesmc_calibrate(); | |
1166 | ||
d5cf2b99 DT |
1167 | /* initialize the input device */ |
1168 | idev = applesmc_idev->input; | |
1169 | idev->name = "applesmc"; | |
1170 | idev->id.bustype = BUS_HOST; | |
1171 | idev->dev.parent = &pdev->dev; | |
7b19ada2 | 1172 | idev->evbit[0] = BIT_MASK(EV_ABS); |
d5cf2b99 | 1173 | input_set_abs_params(idev, ABS_X, |
6f2fad74 | 1174 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
d5cf2b99 | 1175 | input_set_abs_params(idev, ABS_Y, |
6f2fad74 NB |
1176 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); |
1177 | ||
d5cf2b99 | 1178 | ret = input_register_polled_device(applesmc_idev); |
6f2fad74 NB |
1179 | if (ret) |
1180 | goto out_idev; | |
1181 | ||
6f2fad74 NB |
1182 | return 0; |
1183 | ||
1184 | out_idev: | |
d5cf2b99 | 1185 | input_free_polled_device(applesmc_idev); |
6f2fad74 NB |
1186 | |
1187 | out_sysfs: | |
0b0b5dff | 1188 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 NB |
1189 | |
1190 | out: | |
1ee7c71b | 1191 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1192 | return ret; |
1193 | } | |
1194 | ||
1195 | /* Release all ressources used by the accelerometer */ | |
1196 | static void applesmc_release_accelerometer(void) | |
1197 | { | |
0b0b5dff HR |
1198 | if (!smcreg.has_accelerometer) |
1199 | return; | |
d5cf2b99 DT |
1200 | input_unregister_polled_device(applesmc_idev); |
1201 | input_free_polled_device(applesmc_idev); | |
0b0b5dff | 1202 | applesmc_destroy_nodes(accelerometer_group); |
6f2fad74 | 1203 | } |
0b0b5dff HR |
1204 | |
1205 | static int applesmc_create_light_sensor(void) | |
1206 | { | |
1207 | if (!smcreg.num_light_sensors) | |
1208 | return 0; | |
1209 | return applesmc_create_nodes(light_sensor_group, 1); | |
1210 | } | |
1211 | ||
1212 | static void applesmc_release_light_sensor(void) | |
1213 | { | |
1214 | if (!smcreg.num_light_sensors) | |
1215 | return; | |
1216 | applesmc_destroy_nodes(light_sensor_group); | |
1217 | } | |
1218 | ||
1219 | static int applesmc_create_key_backlight(void) | |
1220 | { | |
1221 | if (!smcreg.has_key_backlight) | |
1222 | return 0; | |
1223 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1224 | if (!applesmc_led_wq) | |
1225 | return -ENOMEM; | |
1226 | return led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1227 | } | |
1228 | ||
1229 | static void applesmc_release_key_backlight(void) | |
1230 | { | |
1231 | if (!smcreg.has_key_backlight) | |
1232 | return; | |
1233 | led_classdev_unregister(&applesmc_backlight); | |
1234 | destroy_workqueue(applesmc_led_wq); | |
1235 | } | |
1236 | ||
40ef06f1 HR |
1237 | static int applesmc_dmi_match(const struct dmi_system_id *id) |
1238 | { | |
1239 | return 1; | |
1240 | } | |
6f2fad74 | 1241 | |
85ebfd3e GR |
1242 | /* |
1243 | * Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1244 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". | |
1245 | */ | |
6f2fad74 | 1246 | static __initdata struct dmi_system_id applesmc_whitelist[] = { |
f5274c97 HR |
1247 | { applesmc_dmi_match, "Apple MacBook Air", { |
1248 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1249 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") }, | |
40ef06f1 | 1250 | }, |
6f2fad74 | 1251 | { applesmc_dmi_match, "Apple MacBook Pro", { |
2bfe8148 GR |
1252 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1253 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro") }, | |
40ef06f1 | 1254 | }, |
cd19ba13 | 1255 | { applesmc_dmi_match, "Apple MacBook", { |
2bfe8148 GR |
1256 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1257 | DMI_MATCH(DMI_PRODUCT_NAME, "MacBook") }, | |
40ef06f1 | 1258 | }, |
6f2fad74 | 1259 | { applesmc_dmi_match, "Apple Macmini", { |
2bfe8148 GR |
1260 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1261 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") }, | |
40ef06f1 | 1262 | }, |
45a3a36b HR |
1263 | { applesmc_dmi_match, "Apple MacPro", { |
1264 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), | |
1265 | DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") }, | |
40ef06f1 | 1266 | }, |
9f86f28d | 1267 | { applesmc_dmi_match, "Apple iMac", { |
2bfe8148 GR |
1268 | DMI_MATCH(DMI_BOARD_VENDOR, "Apple"), |
1269 | DMI_MATCH(DMI_PRODUCT_NAME, "iMac") }, | |
40ef06f1 | 1270 | }, |
6f2fad74 NB |
1271 | { .ident = NULL } |
1272 | }; | |
1273 | ||
1274 | static int __init applesmc_init(void) | |
1275 | { | |
1276 | int ret; | |
6f2fad74 | 1277 | |
6f2fad74 | 1278 | if (!dmi_check_system(applesmc_whitelist)) { |
1ee7c71b | 1279 | pr_warn("supported laptop not found!\n"); |
6f2fad74 NB |
1280 | ret = -ENODEV; |
1281 | goto out; | |
1282 | } | |
1283 | ||
1284 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1285 | "applesmc")) { | |
1286 | ret = -ENXIO; | |
1287 | goto out; | |
1288 | } | |
1289 | ||
1290 | ret = platform_driver_register(&applesmc_driver); | |
1291 | if (ret) | |
1292 | goto out_region; | |
1293 | ||
ddfbf2af JD |
1294 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1295 | NULL, 0); | |
6f2fad74 NB |
1296 | if (IS_ERR(pdev)) { |
1297 | ret = PTR_ERR(pdev); | |
1298 | goto out_driver; | |
1299 | } | |
1300 | ||
5874583d HR |
1301 | /* create register cache */ |
1302 | ret = applesmc_init_smcreg(); | |
6996abf0 NB |
1303 | if (ret) |
1304 | goto out_device; | |
fa74419b | 1305 | |
0b0b5dff | 1306 | ret = applesmc_create_nodes(info_group, 1); |
5874583d HR |
1307 | if (ret) |
1308 | goto out_smcreg; | |
1309 | ||
3eba2bf7 HR |
1310 | ret = applesmc_create_nodes(fan_group, smcreg.fan_count); |
1311 | if (ret) | |
1312 | goto out_info; | |
6f2fad74 | 1313 | |
e30bca12 | 1314 | ret = applesmc_create_nodes(temp_group, smcreg.index_count); |
9792dadf HR |
1315 | if (ret) |
1316 | goto out_fans; | |
6f2fad74 | 1317 | |
0b0b5dff HR |
1318 | ret = applesmc_create_accelerometer(); |
1319 | if (ret) | |
1320 | goto out_temperature; | |
6f2fad74 | 1321 | |
0b0b5dff HR |
1322 | ret = applesmc_create_light_sensor(); |
1323 | if (ret) | |
1324 | goto out_accelerometer; | |
6f2fad74 | 1325 | |
0b0b5dff HR |
1326 | ret = applesmc_create_key_backlight(); |
1327 | if (ret) | |
1328 | goto out_light_sysfs; | |
6f2fad74 | 1329 | |
1beeffe4 TJ |
1330 | hwmon_dev = hwmon_device_register(&pdev->dev); |
1331 | if (IS_ERR(hwmon_dev)) { | |
1332 | ret = PTR_ERR(hwmon_dev); | |
6f2fad74 NB |
1333 | goto out_light_ledclass; |
1334 | } | |
1335 | ||
6f2fad74 NB |
1336 | return 0; |
1337 | ||
1338 | out_light_ledclass: | |
0b0b5dff | 1339 | applesmc_release_key_backlight(); |
6f2fad74 | 1340 | out_light_sysfs: |
0b0b5dff | 1341 | applesmc_release_light_sensor(); |
6f2fad74 | 1342 | out_accelerometer: |
0b0b5dff | 1343 | applesmc_release_accelerometer(); |
6f2fad74 | 1344 | out_temperature: |
9792dadf | 1345 | applesmc_destroy_nodes(temp_group); |
0559a538 | 1346 | out_fans: |
3eba2bf7 HR |
1347 | applesmc_destroy_nodes(fan_group); |
1348 | out_info: | |
0b0b5dff | 1349 | applesmc_destroy_nodes(info_group); |
5874583d HR |
1350 | out_smcreg: |
1351 | applesmc_destroy_smcreg(); | |
6f2fad74 NB |
1352 | out_device: |
1353 | platform_device_unregister(pdev); | |
1354 | out_driver: | |
1355 | platform_driver_unregister(&applesmc_driver); | |
1356 | out_region: | |
1357 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1358 | out: | |
1ee7c71b | 1359 | pr_warn("driver init failed (ret=%d)!\n", ret); |
6f2fad74 NB |
1360 | return ret; |
1361 | } | |
1362 | ||
1363 | static void __exit applesmc_exit(void) | |
1364 | { | |
1beeffe4 | 1365 | hwmon_device_unregister(hwmon_dev); |
0b0b5dff HR |
1366 | applesmc_release_key_backlight(); |
1367 | applesmc_release_light_sensor(); | |
1368 | applesmc_release_accelerometer(); | |
9792dadf | 1369 | applesmc_destroy_nodes(temp_group); |
3eba2bf7 | 1370 | applesmc_destroy_nodes(fan_group); |
0b0b5dff | 1371 | applesmc_destroy_nodes(info_group); |
5874583d | 1372 | applesmc_destroy_smcreg(); |
6f2fad74 NB |
1373 | platform_device_unregister(pdev); |
1374 | platform_driver_unregister(&applesmc_driver); | |
1375 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
6f2fad74 NB |
1376 | } |
1377 | ||
1378 | module_init(applesmc_init); | |
1379 | module_exit(applesmc_exit); | |
1380 | ||
1381 | MODULE_AUTHOR("Nicolas Boichat"); | |
1382 | MODULE_DESCRIPTION("Apple SMC"); | |
1383 | MODULE_LICENSE("GPL v2"); | |
dc924efb | 1384 | MODULE_DEVICE_TABLE(dmi, applesmc_whitelist); |