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1da177e4 LT |
1 | /* |
2 | adm1031.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | Based on lm75.c and lm85.c | |
5 | Supports adm1030 / adm1031 | |
6 | Copyright (C) 2004 Alexandre d'Alton <alex@alexdalton.org> | |
7 | Reworked by Jean Delvare <khali@linux-fr.org> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/jiffies.h> | |
28 | #include <linux/i2c.h> | |
29 | #include <linux/i2c-sensor.h> | |
30 | ||
31 | /* Following macros takes channel parameter starting from 0 to 2 */ | |
32 | #define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr)) | |
33 | #define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr)) | |
34 | #define ADM1031_REG_PWM (0x22) | |
35 | #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr)) | |
36 | ||
37 | #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr)) | |
38 | #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr)) | |
39 | #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr)) | |
40 | ||
41 | #define ADM1031_REG_TEMP(nr) (0xa + (nr)) | |
42 | #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr)) | |
43 | ||
44 | #define ADM1031_REG_STATUS(nr) (0x2 + (nr)) | |
45 | ||
46 | #define ADM1031_REG_CONF1 0x0 | |
47 | #define ADM1031_REG_CONF2 0x1 | |
48 | #define ADM1031_REG_EXT_TEMP 0x6 | |
49 | ||
50 | #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */ | |
51 | #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */ | |
52 | #define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */ | |
53 | ||
54 | #define ADM1031_CONF2_PWM1_ENABLE 0x01 | |
55 | #define ADM1031_CONF2_PWM2_ENABLE 0x02 | |
56 | #define ADM1031_CONF2_TACH1_ENABLE 0x04 | |
57 | #define ADM1031_CONF2_TACH2_ENABLE 0x08 | |
58 | #define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan)) | |
59 | ||
60 | /* Addresses to scan */ | |
61 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; | |
62 | static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END }; | |
63 | ||
64 | /* Insmod parameters */ | |
65 | SENSORS_INSMOD_2(adm1030, adm1031); | |
66 | ||
67 | typedef u8 auto_chan_table_t[8][2]; | |
68 | ||
69 | /* Each client has this additional data */ | |
70 | struct adm1031_data { | |
71 | struct i2c_client client; | |
72 | struct semaphore update_lock; | |
73 | int chip_type; | |
74 | char valid; /* !=0 if following fields are valid */ | |
75 | unsigned long last_updated; /* In jiffies */ | |
76 | /* The chan_select_table contains the possible configurations for | |
77 | * auto fan control. | |
78 | */ | |
79 | auto_chan_table_t *chan_select_table; | |
80 | u16 alarm; | |
81 | u8 conf1; | |
82 | u8 conf2; | |
83 | u8 fan[2]; | |
84 | u8 fan_div[2]; | |
85 | u8 fan_min[2]; | |
86 | u8 pwm[2]; | |
87 | u8 old_pwm[2]; | |
88 | s8 temp[3]; | |
89 | u8 ext_temp[3]; | |
90 | u8 auto_temp[3]; | |
91 | u8 auto_temp_min[3]; | |
92 | u8 auto_temp_off[3]; | |
93 | u8 auto_temp_max[3]; | |
94 | s8 temp_min[3]; | |
95 | s8 temp_max[3]; | |
96 | s8 temp_crit[3]; | |
97 | }; | |
98 | ||
99 | static int adm1031_attach_adapter(struct i2c_adapter *adapter); | |
100 | static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind); | |
101 | static void adm1031_init_client(struct i2c_client *client); | |
102 | static int adm1031_detach_client(struct i2c_client *client); | |
103 | static struct adm1031_data *adm1031_update_device(struct device *dev); | |
104 | ||
105 | /* This is the driver that will be inserted */ | |
106 | static struct i2c_driver adm1031_driver = { | |
107 | .owner = THIS_MODULE, | |
108 | .name = "adm1031", | |
109 | .flags = I2C_DF_NOTIFY, | |
110 | .attach_adapter = adm1031_attach_adapter, | |
111 | .detach_client = adm1031_detach_client, | |
112 | }; | |
113 | ||
114 | static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg) | |
115 | { | |
116 | return i2c_smbus_read_byte_data(client, reg); | |
117 | } | |
118 | ||
119 | static inline int | |
120 | adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value) | |
121 | { | |
122 | return i2c_smbus_write_byte_data(client, reg, value); | |
123 | } | |
124 | ||
125 | ||
126 | #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \ | |
127 | ((val + 500) / 1000))) | |
128 | ||
129 | #define TEMP_FROM_REG(val) ((val) * 1000) | |
130 | ||
131 | #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125) | |
132 | ||
133 | #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0) | |
134 | ||
135 | static int FAN_TO_REG(int reg, int div) | |
136 | { | |
137 | int tmp; | |
138 | tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div); | |
139 | return tmp > 255 ? 255 : tmp; | |
140 | } | |
141 | ||
142 | #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6)) | |
143 | ||
144 | #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4) | |
145 | #define PWM_FROM_REG(val) ((val) << 4) | |
146 | ||
147 | #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7) | |
148 | #define FAN_CHAN_TO_REG(val, reg) \ | |
149 | (((reg) & 0x1F) | (((val) << 5) & 0xe0)) | |
150 | ||
151 | #define AUTO_TEMP_MIN_TO_REG(val, reg) \ | |
152 | ((((val)/500) & 0xf8)|((reg) & 0x7)) | |
153 | #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7))) | |
154 | #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2)) | |
155 | ||
156 | #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2) | |
157 | ||
158 | #define AUTO_TEMP_OFF_FROM_REG(reg) \ | |
159 | (AUTO_TEMP_MIN_FROM_REG(reg) - 5000) | |
160 | ||
161 | #define AUTO_TEMP_MAX_FROM_REG(reg) \ | |
162 | (AUTO_TEMP_RANGE_FROM_REG(reg) + \ | |
163 | AUTO_TEMP_MIN_FROM_REG(reg)) | |
164 | ||
165 | static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm) | |
166 | { | |
167 | int ret; | |
168 | int range = val - AUTO_TEMP_MIN_FROM_REG(reg); | |
169 | ||
170 | range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm); | |
171 | ret = ((reg & 0xf8) | | |
172 | (range < 10000 ? 0 : | |
173 | range < 20000 ? 1 : | |
174 | range < 40000 ? 2 : range < 80000 ? 3 : 4)); | |
175 | return ret; | |
176 | } | |
177 | ||
178 | /* FAN auto control */ | |
179 | #define GET_FAN_AUTO_BITFIELD(data, idx) \ | |
180 | (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2] | |
181 | ||
182 | /* The tables below contains the possible values for the auto fan | |
183 | * control bitfields. the index in the table is the register value. | |
184 | * MSb is the auto fan control enable bit, so the four first entries | |
185 | * in the table disables auto fan control when both bitfields are zero. | |
186 | */ | |
187 | static auto_chan_table_t auto_channel_select_table_adm1031 = { | |
188 | {0, 0}, {0, 0}, {0, 0}, {0, 0}, | |
189 | {2 /*0b010 */ , 4 /*0b100 */ }, | |
190 | {2 /*0b010 */ , 2 /*0b010 */ }, | |
191 | {4 /*0b100 */ , 4 /*0b100 */ }, | |
192 | {7 /*0b111 */ , 7 /*0b111 */ }, | |
193 | }; | |
194 | ||
195 | static auto_chan_table_t auto_channel_select_table_adm1030 = { | |
196 | {0, 0}, {0, 0}, {0, 0}, {0, 0}, | |
197 | {2 /*0b10 */ , 0}, | |
198 | {0xff /*invalid */ , 0}, | |
199 | {0xff /*invalid */ , 0}, | |
200 | {3 /*0b11 */ , 0}, | |
201 | }; | |
202 | ||
203 | /* That function checks if a bitfield is valid and returns the other bitfield | |
204 | * nearest match if no exact match where found. | |
205 | */ | |
206 | static int | |
207 | get_fan_auto_nearest(struct adm1031_data *data, | |
208 | int chan, u8 val, u8 reg, u8 * new_reg) | |
209 | { | |
210 | int i; | |
211 | int first_match = -1, exact_match = -1; | |
212 | u8 other_reg_val = | |
213 | (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1]; | |
214 | ||
215 | if (val == 0) { | |
216 | *new_reg = 0; | |
217 | return 0; | |
218 | } | |
219 | ||
220 | for (i = 0; i < 8; i++) { | |
221 | if ((val == (*data->chan_select_table)[i][chan]) && | |
222 | ((*data->chan_select_table)[i][chan ? 0 : 1] == | |
223 | other_reg_val)) { | |
224 | /* We found an exact match */ | |
225 | exact_match = i; | |
226 | break; | |
227 | } else if (val == (*data->chan_select_table)[i][chan] && | |
228 | first_match == -1) { | |
229 | /* Save the first match in case of an exact match has not been | |
230 | * found | |
231 | */ | |
232 | first_match = i; | |
233 | } | |
234 | } | |
235 | ||
236 | if (exact_match >= 0) { | |
237 | *new_reg = exact_match; | |
238 | } else if (first_match >= 0) { | |
239 | *new_reg = first_match; | |
240 | } else { | |
241 | return -EINVAL; | |
242 | } | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr) | |
247 | { | |
248 | struct adm1031_data *data = adm1031_update_device(dev); | |
249 | return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr)); | |
250 | } | |
251 | ||
252 | static ssize_t | |
253 | set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr) | |
254 | { | |
255 | struct i2c_client *client = to_i2c_client(dev); | |
256 | struct adm1031_data *data = i2c_get_clientdata(client); | |
257 | int val = simple_strtol(buf, NULL, 10); | |
258 | u8 reg; | |
259 | int ret; | |
260 | u8 old_fan_mode; | |
261 | ||
262 | old_fan_mode = data->conf1; | |
263 | ||
264 | down(&data->update_lock); | |
265 | ||
266 | if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) { | |
267 | up(&data->update_lock); | |
268 | return ret; | |
269 | } | |
270 | if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^ | |
271 | (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) { | |
272 | if (data->conf1 & ADM1031_CONF1_AUTO_MODE){ | |
273 | /* Switch to Auto Fan Mode | |
274 | * Save PWM registers | |
275 | * Set PWM registers to 33% Both */ | |
276 | data->old_pwm[0] = data->pwm[0]; | |
277 | data->old_pwm[1] = data->pwm[1]; | |
278 | adm1031_write_value(client, ADM1031_REG_PWM, 0x55); | |
279 | } else { | |
280 | /* Switch to Manual Mode */ | |
281 | data->pwm[0] = data->old_pwm[0]; | |
282 | data->pwm[1] = data->old_pwm[1]; | |
283 | /* Restore PWM registers */ | |
284 | adm1031_write_value(client, ADM1031_REG_PWM, | |
285 | data->pwm[0] | (data->pwm[1] << 4)); | |
286 | } | |
287 | } | |
288 | data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1); | |
289 | adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1); | |
290 | up(&data->update_lock); | |
291 | return count; | |
292 | } | |
293 | ||
294 | #define fan_auto_channel_offset(offset) \ | |
30f74292 | 295 | static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
296 | { \ |
297 | return show_fan_auto_channel(dev, buf, offset - 1); \ | |
298 | } \ | |
30f74292 | 299 | static ssize_t set_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
300 | const char *buf, size_t count) \ |
301 | { \ | |
302 | return set_fan_auto_channel(dev, buf, count, offset - 1); \ | |
303 | } \ | |
304 | static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \ | |
305 | show_fan_auto_channel_##offset, \ | |
306 | set_fan_auto_channel_##offset) | |
307 | ||
308 | fan_auto_channel_offset(1); | |
309 | fan_auto_channel_offset(2); | |
310 | ||
311 | /* Auto Temps */ | |
312 | static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr) | |
313 | { | |
314 | struct adm1031_data *data = adm1031_update_device(dev); | |
315 | return sprintf(buf, "%d\n", | |
316 | AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr])); | |
317 | } | |
318 | static ssize_t show_auto_temp_min(struct device *dev, char *buf, int nr) | |
319 | { | |
320 | struct adm1031_data *data = adm1031_update_device(dev); | |
321 | return sprintf(buf, "%d\n", | |
322 | AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr])); | |
323 | } | |
324 | static ssize_t | |
325 | set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr) | |
326 | { | |
327 | struct i2c_client *client = to_i2c_client(dev); | |
328 | struct adm1031_data *data = i2c_get_clientdata(client); | |
329 | int val = simple_strtol(buf, NULL, 10); | |
330 | ||
331 | down(&data->update_lock); | |
332 | data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]); | |
333 | adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), | |
334 | data->auto_temp[nr]); | |
335 | up(&data->update_lock); | |
336 | return count; | |
337 | } | |
338 | static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr) | |
339 | { | |
340 | struct adm1031_data *data = adm1031_update_device(dev); | |
341 | return sprintf(buf, "%d\n", | |
342 | AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr])); | |
343 | } | |
344 | static ssize_t | |
345 | set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr) | |
346 | { | |
347 | struct i2c_client *client = to_i2c_client(dev); | |
348 | struct adm1031_data *data = i2c_get_clientdata(client); | |
349 | int val = simple_strtol(buf, NULL, 10); | |
350 | ||
351 | down(&data->update_lock); | |
352 | data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]); | |
353 | adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), | |
354 | data->temp_max[nr]); | |
355 | up(&data->update_lock); | |
356 | return count; | |
357 | } | |
358 | ||
359 | #define auto_temp_reg(offset) \ | |
30f74292 | 360 | static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
361 | { \ |
362 | return show_auto_temp_off(dev, buf, offset - 1); \ | |
363 | } \ | |
30f74292 | 364 | static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
365 | { \ |
366 | return show_auto_temp_min(dev, buf, offset - 1); \ | |
367 | } \ | |
30f74292 | 368 | static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
369 | { \ |
370 | return show_auto_temp_max(dev, buf, offset - 1); \ | |
371 | } \ | |
30f74292 | 372 | static ssize_t set_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
373 | const char *buf, size_t count) \ |
374 | { \ | |
375 | return set_auto_temp_min(dev, buf, count, offset - 1); \ | |
376 | } \ | |
30f74292 | 377 | static ssize_t set_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
378 | const char *buf, size_t count) \ |
379 | { \ | |
380 | return set_auto_temp_max(dev, buf, count, offset - 1); \ | |
381 | } \ | |
382 | static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \ | |
383 | show_auto_temp_##offset##_off, NULL); \ | |
384 | static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
385 | show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\ | |
386 | static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
387 | show_auto_temp_##offset##_max, set_auto_temp_##offset##_max) | |
388 | ||
389 | auto_temp_reg(1); | |
390 | auto_temp_reg(2); | |
391 | auto_temp_reg(3); | |
392 | ||
393 | /* pwm */ | |
394 | static ssize_t show_pwm(struct device *dev, char *buf, int nr) | |
395 | { | |
396 | struct adm1031_data *data = adm1031_update_device(dev); | |
397 | return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); | |
398 | } | |
399 | static ssize_t | |
400 | set_pwm(struct device *dev, const char *buf, size_t count, int nr) | |
401 | { | |
402 | struct i2c_client *client = to_i2c_client(dev); | |
403 | struct adm1031_data *data = i2c_get_clientdata(client); | |
404 | int val = simple_strtol(buf, NULL, 10); | |
405 | int reg; | |
406 | ||
407 | down(&data->update_lock); | |
408 | if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) && | |
409 | (((val>>4) & 0xf) != 5)) { | |
410 | /* In automatic mode, the only PWM accepted is 33% */ | |
411 | up(&data->update_lock); | |
412 | return -EINVAL; | |
413 | } | |
414 | data->pwm[nr] = PWM_TO_REG(val); | |
415 | reg = adm1031_read_value(client, ADM1031_REG_PWM); | |
416 | adm1031_write_value(client, ADM1031_REG_PWM, | |
417 | nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf) | |
418 | : (data->pwm[nr] & 0xf) | (reg & 0xf0)); | |
419 | up(&data->update_lock); | |
420 | return count; | |
421 | } | |
422 | ||
423 | #define pwm_reg(offset) \ | |
30f74292 | 424 | static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
425 | { \ |
426 | return show_pwm(dev, buf, offset - 1); \ | |
427 | } \ | |
30f74292 | 428 | static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
429 | const char *buf, size_t count) \ |
430 | { \ | |
431 | return set_pwm(dev, buf, count, offset - 1); \ | |
432 | } \ | |
433 | static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
434 | show_pwm_##offset, set_pwm_##offset) | |
435 | ||
436 | pwm_reg(1); | |
437 | pwm_reg(2); | |
438 | ||
439 | /* Fans */ | |
440 | ||
441 | /* | |
442 | * That function checks the cases where the fan reading is not | |
44bbe87e | 443 | * relevant. It is used to provide 0 as fan reading when the fan is |
1da177e4 LT |
444 | * not supposed to run |
445 | */ | |
446 | static int trust_fan_readings(struct adm1031_data *data, int chan) | |
447 | { | |
448 | int res = 0; | |
449 | ||
450 | if (data->conf1 & ADM1031_CONF1_AUTO_MODE) { | |
451 | switch (data->conf1 & 0x60) { | |
452 | case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */ | |
453 | res = data->temp[chan+1] >= | |
454 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]); | |
455 | break; | |
456 | case 0x20: /* remote temp1 controls both fans */ | |
457 | res = | |
458 | data->temp[1] >= | |
459 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]); | |
460 | break; | |
461 | case 0x40: /* remote temp2 controls both fans */ | |
462 | res = | |
463 | data->temp[2] >= | |
464 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]); | |
465 | break; | |
466 | case 0x60: /* max controls both fans */ | |
467 | res = | |
468 | data->temp[0] >= | |
469 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0]) | |
470 | || data->temp[1] >= | |
471 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]) | |
472 | || (data->chip_type == adm1031 | |
473 | && data->temp[2] >= | |
474 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2])); | |
475 | break; | |
476 | } | |
477 | } else { | |
478 | res = data->pwm[chan] > 0; | |
479 | } | |
480 | return res; | |
481 | } | |
482 | ||
483 | ||
484 | static ssize_t show_fan(struct device *dev, char *buf, int nr) | |
485 | { | |
486 | struct adm1031_data *data = adm1031_update_device(dev); | |
487 | int value; | |
488 | ||
489 | value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr], | |
490 | FAN_DIV_FROM_REG(data->fan_div[nr])) : 0; | |
491 | return sprintf(buf, "%d\n", value); | |
492 | } | |
493 | ||
494 | static ssize_t show_fan_div(struct device *dev, char *buf, int nr) | |
495 | { | |
496 | struct adm1031_data *data = adm1031_update_device(dev); | |
497 | return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr])); | |
498 | } | |
499 | static ssize_t show_fan_min(struct device *dev, char *buf, int nr) | |
500 | { | |
501 | struct adm1031_data *data = adm1031_update_device(dev); | |
502 | return sprintf(buf, "%d\n", | |
503 | FAN_FROM_REG(data->fan_min[nr], | |
504 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
505 | } | |
506 | static ssize_t | |
507 | set_fan_min(struct device *dev, const char *buf, size_t count, int nr) | |
508 | { | |
509 | struct i2c_client *client = to_i2c_client(dev); | |
510 | struct adm1031_data *data = i2c_get_clientdata(client); | |
511 | int val = simple_strtol(buf, NULL, 10); | |
512 | ||
513 | down(&data->update_lock); | |
514 | if (val) { | |
515 | data->fan_min[nr] = | |
516 | FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr])); | |
517 | } else { | |
518 | data->fan_min[nr] = 0xff; | |
519 | } | |
520 | adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]); | |
521 | up(&data->update_lock); | |
522 | return count; | |
523 | } | |
524 | static ssize_t | |
525 | set_fan_div(struct device *dev, const char *buf, size_t count, int nr) | |
526 | { | |
527 | struct i2c_client *client = to_i2c_client(dev); | |
528 | struct adm1031_data *data = i2c_get_clientdata(client); | |
529 | int val = simple_strtol(buf, NULL, 10); | |
530 | u8 tmp; | |
531 | int old_div; | |
532 | int new_min; | |
533 | ||
534 | tmp = val == 8 ? 0xc0 : | |
535 | val == 4 ? 0x80 : | |
536 | val == 2 ? 0x40 : | |
537 | val == 1 ? 0x00 : | |
538 | 0xff; | |
539 | if (tmp == 0xff) | |
540 | return -EINVAL; | |
541 | ||
542 | down(&data->update_lock); | |
543 | old_div = FAN_DIV_FROM_REG(data->fan_div[nr]); | |
544 | data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]); | |
545 | new_min = data->fan_min[nr] * old_div / | |
546 | FAN_DIV_FROM_REG(data->fan_div[nr]); | |
547 | data->fan_min[nr] = new_min > 0xff ? 0xff : new_min; | |
548 | data->fan[nr] = data->fan[nr] * old_div / | |
549 | FAN_DIV_FROM_REG(data->fan_div[nr]); | |
550 | ||
551 | adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr), | |
552 | data->fan_div[nr]); | |
553 | adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), | |
554 | data->fan_min[nr]); | |
555 | up(&data->update_lock); | |
556 | return count; | |
557 | } | |
558 | ||
559 | #define fan_offset(offset) \ | |
30f74292 | 560 | static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
561 | { \ |
562 | return show_fan(dev, buf, offset - 1); \ | |
563 | } \ | |
30f74292 | 564 | static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
565 | { \ |
566 | return show_fan_min(dev, buf, offset - 1); \ | |
567 | } \ | |
30f74292 | 568 | static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
569 | { \ |
570 | return show_fan_div(dev, buf, offset - 1); \ | |
571 | } \ | |
30f74292 | 572 | static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
573 | const char *buf, size_t count) \ |
574 | { \ | |
575 | return set_fan_min(dev, buf, count, offset - 1); \ | |
576 | } \ | |
30f74292 | 577 | static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
578 | const char *buf, size_t count) \ |
579 | { \ | |
580 | return set_fan_div(dev, buf, count, offset - 1); \ | |
581 | } \ | |
582 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ | |
583 | NULL); \ | |
584 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
585 | show_fan_##offset##_min, set_fan_##offset##_min); \ | |
586 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
587 | show_fan_##offset##_div, set_fan_##offset##_div); \ | |
588 | static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \ | |
589 | show_pwm_##offset, set_pwm_##offset) | |
590 | ||
591 | fan_offset(1); | |
592 | fan_offset(2); | |
593 | ||
594 | ||
595 | /* Temps */ | |
596 | static ssize_t show_temp(struct device *dev, char *buf, int nr) | |
597 | { | |
598 | struct adm1031_data *data = adm1031_update_device(dev); | |
599 | int ext; | |
600 | ext = nr == 0 ? | |
601 | ((data->ext_temp[nr] >> 6) & 0x3) * 2 : | |
602 | (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7)); | |
603 | return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext)); | |
604 | } | |
605 | static ssize_t show_temp_min(struct device *dev, char *buf, int nr) | |
606 | { | |
607 | struct adm1031_data *data = adm1031_update_device(dev); | |
608 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); | |
609 | } | |
610 | static ssize_t show_temp_max(struct device *dev, char *buf, int nr) | |
611 | { | |
612 | struct adm1031_data *data = adm1031_update_device(dev); | |
613 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
614 | } | |
615 | static ssize_t show_temp_crit(struct device *dev, char *buf, int nr) | |
616 | { | |
617 | struct adm1031_data *data = adm1031_update_device(dev); | |
618 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr])); | |
619 | } | |
620 | static ssize_t | |
621 | set_temp_min(struct device *dev, const char *buf, size_t count, int nr) | |
622 | { | |
623 | struct i2c_client *client = to_i2c_client(dev); | |
624 | struct adm1031_data *data = i2c_get_clientdata(client); | |
625 | int val; | |
626 | ||
627 | val = simple_strtol(buf, NULL, 10); | |
628 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
629 | down(&data->update_lock); | |
630 | data->temp_min[nr] = TEMP_TO_REG(val); | |
631 | adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr), | |
632 | data->temp_min[nr]); | |
633 | up(&data->update_lock); | |
634 | return count; | |
635 | } | |
636 | static ssize_t | |
637 | set_temp_max(struct device *dev, const char *buf, size_t count, int nr) | |
638 | { | |
639 | struct i2c_client *client = to_i2c_client(dev); | |
640 | struct adm1031_data *data = i2c_get_clientdata(client); | |
641 | int val; | |
642 | ||
643 | val = simple_strtol(buf, NULL, 10); | |
644 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
645 | down(&data->update_lock); | |
646 | data->temp_max[nr] = TEMP_TO_REG(val); | |
647 | adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr), | |
648 | data->temp_max[nr]); | |
649 | up(&data->update_lock); | |
650 | return count; | |
651 | } | |
652 | static ssize_t | |
653 | set_temp_crit(struct device *dev, const char *buf, size_t count, int nr) | |
654 | { | |
655 | struct i2c_client *client = to_i2c_client(dev); | |
656 | struct adm1031_data *data = i2c_get_clientdata(client); | |
657 | int val; | |
658 | ||
659 | val = simple_strtol(buf, NULL, 10); | |
660 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
661 | down(&data->update_lock); | |
662 | data->temp_crit[nr] = TEMP_TO_REG(val); | |
663 | adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr), | |
664 | data->temp_crit[nr]); | |
665 | up(&data->update_lock); | |
666 | return count; | |
667 | } | |
668 | ||
669 | #define temp_reg(offset) \ | |
30f74292 | 670 | static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
671 | { \ |
672 | return show_temp(dev, buf, offset - 1); \ | |
673 | } \ | |
30f74292 | 674 | static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
675 | { \ |
676 | return show_temp_min(dev, buf, offset - 1); \ | |
677 | } \ | |
30f74292 | 678 | static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
679 | { \ |
680 | return show_temp_max(dev, buf, offset - 1); \ | |
681 | } \ | |
30f74292 | 682 | static ssize_t show_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
683 | { \ |
684 | return show_temp_crit(dev, buf, offset - 1); \ | |
685 | } \ | |
30f74292 | 686 | static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
687 | const char *buf, size_t count) \ |
688 | { \ | |
689 | return set_temp_min(dev, buf, count, offset - 1); \ | |
690 | } \ | |
30f74292 | 691 | static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
692 | const char *buf, size_t count) \ |
693 | { \ | |
694 | return set_temp_max(dev, buf, count, offset - 1); \ | |
695 | } \ | |
30f74292 | 696 | static ssize_t set_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
697 | const char *buf, size_t count) \ |
698 | { \ | |
699 | return set_temp_crit(dev, buf, count, offset - 1); \ | |
700 | } \ | |
701 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ | |
702 | NULL); \ | |
703 | static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
704 | show_temp_##offset##_min, set_temp_##offset##_min); \ | |
705 | static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
706 | show_temp_##offset##_max, set_temp_##offset##_max); \ | |
707 | static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \ | |
708 | show_temp_##offset##_crit, set_temp_##offset##_crit) | |
709 | ||
710 | temp_reg(1); | |
711 | temp_reg(2); | |
712 | temp_reg(3); | |
713 | ||
714 | /* Alarms */ | |
30f74292 | 715 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
716 | { |
717 | struct adm1031_data *data = adm1031_update_device(dev); | |
718 | return sprintf(buf, "%d\n", data->alarm); | |
719 | } | |
720 | ||
721 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
722 | ||
723 | ||
724 | static int adm1031_attach_adapter(struct i2c_adapter *adapter) | |
725 | { | |
726 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
727 | return 0; | |
728 | return i2c_detect(adapter, &addr_data, adm1031_detect); | |
729 | } | |
730 | ||
731 | /* This function is called by i2c_detect */ | |
732 | static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind) | |
733 | { | |
734 | struct i2c_client *new_client; | |
735 | struct adm1031_data *data; | |
736 | int err = 0; | |
737 | const char *name = ""; | |
738 | ||
739 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
740 | goto exit; | |
741 | ||
742 | if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) { | |
743 | err = -ENOMEM; | |
744 | goto exit; | |
745 | } | |
746 | memset(data, 0, sizeof(struct adm1031_data)); | |
747 | ||
748 | new_client = &data->client; | |
749 | i2c_set_clientdata(new_client, data); | |
750 | new_client->addr = address; | |
751 | new_client->adapter = adapter; | |
752 | new_client->driver = &adm1031_driver; | |
753 | new_client->flags = 0; | |
754 | ||
755 | if (kind < 0) { | |
756 | int id, co; | |
757 | id = i2c_smbus_read_byte_data(new_client, 0x3d); | |
758 | co = i2c_smbus_read_byte_data(new_client, 0x3e); | |
759 | ||
760 | if (!((id == 0x31 || id == 0x30) && co == 0x41)) | |
761 | goto exit_free; | |
762 | kind = (id == 0x30) ? adm1030 : adm1031; | |
763 | } | |
764 | ||
765 | if (kind <= 0) | |
766 | kind = adm1031; | |
767 | ||
768 | /* Given the detected chip type, set the chip name and the | |
769 | * auto fan control helper table. */ | |
770 | if (kind == adm1030) { | |
771 | name = "adm1030"; | |
772 | data->chan_select_table = &auto_channel_select_table_adm1030; | |
773 | } else if (kind == adm1031) { | |
774 | name = "adm1031"; | |
775 | data->chan_select_table = &auto_channel_select_table_adm1031; | |
776 | } | |
777 | data->chip_type = kind; | |
778 | ||
779 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
780 | data->valid = 0; | |
781 | init_MUTEX(&data->update_lock); | |
782 | ||
783 | /* Tell the I2C layer a new client has arrived */ | |
784 | if ((err = i2c_attach_client(new_client))) | |
785 | goto exit_free; | |
786 | ||
787 | /* Initialize the ADM1031 chip */ | |
788 | adm1031_init_client(new_client); | |
789 | ||
790 | /* Register sysfs hooks */ | |
791 | device_create_file(&new_client->dev, &dev_attr_fan1_input); | |
792 | device_create_file(&new_client->dev, &dev_attr_fan1_div); | |
793 | device_create_file(&new_client->dev, &dev_attr_fan1_min); | |
794 | device_create_file(&new_client->dev, &dev_attr_pwm1); | |
795 | device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel); | |
796 | device_create_file(&new_client->dev, &dev_attr_temp1_input); | |
797 | device_create_file(&new_client->dev, &dev_attr_temp1_min); | |
798 | device_create_file(&new_client->dev, &dev_attr_temp1_max); | |
799 | device_create_file(&new_client->dev, &dev_attr_temp1_crit); | |
800 | device_create_file(&new_client->dev, &dev_attr_temp2_input); | |
801 | device_create_file(&new_client->dev, &dev_attr_temp2_min); | |
802 | device_create_file(&new_client->dev, &dev_attr_temp2_max); | |
803 | device_create_file(&new_client->dev, &dev_attr_temp2_crit); | |
804 | ||
805 | device_create_file(&new_client->dev, &dev_attr_auto_temp1_off); | |
806 | device_create_file(&new_client->dev, &dev_attr_auto_temp1_min); | |
807 | device_create_file(&new_client->dev, &dev_attr_auto_temp1_max); | |
808 | ||
809 | device_create_file(&new_client->dev, &dev_attr_auto_temp2_off); | |
810 | device_create_file(&new_client->dev, &dev_attr_auto_temp2_min); | |
811 | device_create_file(&new_client->dev, &dev_attr_auto_temp2_max); | |
812 | ||
813 | device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm); | |
814 | ||
815 | device_create_file(&new_client->dev, &dev_attr_alarms); | |
816 | ||
817 | if (kind == adm1031) { | |
818 | device_create_file(&new_client->dev, &dev_attr_fan2_input); | |
819 | device_create_file(&new_client->dev, &dev_attr_fan2_div); | |
820 | device_create_file(&new_client->dev, &dev_attr_fan2_min); | |
821 | device_create_file(&new_client->dev, &dev_attr_pwm2); | |
822 | device_create_file(&new_client->dev, | |
823 | &dev_attr_auto_fan2_channel); | |
824 | device_create_file(&new_client->dev, &dev_attr_temp3_input); | |
825 | device_create_file(&new_client->dev, &dev_attr_temp3_min); | |
826 | device_create_file(&new_client->dev, &dev_attr_temp3_max); | |
827 | device_create_file(&new_client->dev, &dev_attr_temp3_crit); | |
828 | device_create_file(&new_client->dev, &dev_attr_auto_temp3_off); | |
829 | device_create_file(&new_client->dev, &dev_attr_auto_temp3_min); | |
830 | device_create_file(&new_client->dev, &dev_attr_auto_temp3_max); | |
831 | device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm); | |
832 | } | |
833 | ||
834 | return 0; | |
835 | ||
836 | exit_free: | |
1f57ff89 | 837 | kfree(data); |
1da177e4 LT |
838 | exit: |
839 | return err; | |
840 | } | |
841 | ||
842 | static int adm1031_detach_client(struct i2c_client *client) | |
843 | { | |
844 | int ret; | |
845 | if ((ret = i2c_detach_client(client)) != 0) { | |
846 | return ret; | |
847 | } | |
848 | kfree(client); | |
849 | return 0; | |
850 | } | |
851 | ||
852 | static void adm1031_init_client(struct i2c_client *client) | |
853 | { | |
854 | unsigned int read_val; | |
855 | unsigned int mask; | |
856 | struct adm1031_data *data = i2c_get_clientdata(client); | |
857 | ||
858 | mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE); | |
859 | if (data->chip_type == adm1031) { | |
860 | mask |= (ADM1031_CONF2_PWM2_ENABLE | | |
861 | ADM1031_CONF2_TACH2_ENABLE); | |
862 | } | |
863 | /* Initialize the ADM1031 chip (enables fan speed reading ) */ | |
864 | read_val = adm1031_read_value(client, ADM1031_REG_CONF2); | |
865 | if ((read_val | mask) != read_val) { | |
866 | adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask); | |
867 | } | |
868 | ||
869 | read_val = adm1031_read_value(client, ADM1031_REG_CONF1); | |
870 | if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) { | |
871 | adm1031_write_value(client, ADM1031_REG_CONF1, read_val | | |
872 | ADM1031_CONF1_MONITOR_ENABLE); | |
873 | } | |
874 | ||
875 | } | |
876 | ||
877 | static struct adm1031_data *adm1031_update_device(struct device *dev) | |
878 | { | |
879 | struct i2c_client *client = to_i2c_client(dev); | |
880 | struct adm1031_data *data = i2c_get_clientdata(client); | |
881 | int chan; | |
882 | ||
883 | down(&data->update_lock); | |
884 | ||
885 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
886 | || !data->valid) { | |
887 | ||
888 | dev_dbg(&client->dev, "Starting adm1031 update\n"); | |
889 | for (chan = 0; | |
890 | chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) { | |
891 | u8 oldh, newh; | |
892 | ||
893 | oldh = | |
894 | adm1031_read_value(client, ADM1031_REG_TEMP(chan)); | |
895 | data->ext_temp[chan] = | |
896 | adm1031_read_value(client, ADM1031_REG_EXT_TEMP); | |
897 | newh = | |
898 | adm1031_read_value(client, ADM1031_REG_TEMP(chan)); | |
899 | if (newh != oldh) { | |
900 | data->ext_temp[chan] = | |
901 | adm1031_read_value(client, | |
902 | ADM1031_REG_EXT_TEMP); | |
903 | #ifdef DEBUG | |
904 | oldh = | |
905 | adm1031_read_value(client, | |
906 | ADM1031_REG_TEMP(chan)); | |
907 | ||
908 | /* oldh is actually newer */ | |
909 | if (newh != oldh) | |
910 | dev_warn(&client->dev, | |
911 | "Remote temperature may be " | |
912 | "wrong.\n"); | |
913 | #endif | |
914 | } | |
915 | data->temp[chan] = newh; | |
916 | ||
917 | data->temp_min[chan] = | |
918 | adm1031_read_value(client, | |
919 | ADM1031_REG_TEMP_MIN(chan)); | |
920 | data->temp_max[chan] = | |
921 | adm1031_read_value(client, | |
922 | ADM1031_REG_TEMP_MAX(chan)); | |
923 | data->temp_crit[chan] = | |
924 | adm1031_read_value(client, | |
925 | ADM1031_REG_TEMP_CRIT(chan)); | |
926 | data->auto_temp[chan] = | |
927 | adm1031_read_value(client, | |
928 | ADM1031_REG_AUTO_TEMP(chan)); | |
929 | ||
930 | } | |
931 | ||
932 | data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1); | |
933 | data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2); | |
934 | ||
935 | data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0)) | |
936 | | (adm1031_read_value(client, ADM1031_REG_STATUS(1)) | |
937 | << 8); | |
938 | if (data->chip_type == adm1030) { | |
939 | data->alarm &= 0xc0ff; | |
940 | } | |
941 | ||
942 | for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) { | |
943 | data->fan_div[chan] = | |
944 | adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan)); | |
945 | data->fan_min[chan] = | |
946 | adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan)); | |
947 | data->fan[chan] = | |
948 | adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan)); | |
949 | data->pwm[chan] = | |
950 | 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >> | |
951 | (4*chan)); | |
952 | } | |
953 | data->last_updated = jiffies; | |
954 | data->valid = 1; | |
955 | } | |
956 | ||
957 | up(&data->update_lock); | |
958 | ||
959 | return data; | |
960 | } | |
961 | ||
962 | static int __init sensors_adm1031_init(void) | |
963 | { | |
964 | return i2c_add_driver(&adm1031_driver); | |
965 | } | |
966 | ||
967 | static void __exit sensors_adm1031_exit(void) | |
968 | { | |
969 | i2c_del_driver(&adm1031_driver); | |
970 | } | |
971 | ||
972 | MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>"); | |
973 | MODULE_DESCRIPTION("ADM1031/ADM1030 driver"); | |
974 | MODULE_LICENSE("GPL"); | |
975 | ||
976 | module_init(sensors_adm1031_init); | |
977 | module_exit(sensors_adm1031_exit); |