Commit | Line | Data |
---|---|---|
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> | |
6d6006b8 | 8 | |
1da177e4 LT |
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> | |
943b0830 | 29 | #include <linux/hwmon.h> |
c801082d | 30 | #include <linux/hwmon-sysfs.h> |
943b0830 | 31 | #include <linux/err.h> |
9a61bf63 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | |
34 | /* Following macros takes channel parameter starting from 0 to 2 */ | |
35 | #define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr)) | |
6d6006b8 | 36 | #define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr)) |
1da177e4 LT |
37 | #define ADM1031_REG_PWM (0x22) |
38 | #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr)) | |
39 | ||
6d6006b8 JD |
40 | #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4 * (nr)) |
41 | #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4 * (nr)) | |
42 | #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4 * (nr)) | |
1da177e4 | 43 | |
6d6006b8 | 44 | #define ADM1031_REG_TEMP(nr) (0x0a + (nr)) |
1da177e4 LT |
45 | #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr)) |
46 | ||
47 | #define ADM1031_REG_STATUS(nr) (0x2 + (nr)) | |
48 | ||
6d6006b8 JD |
49 | #define ADM1031_REG_CONF1 0x00 |
50 | #define ADM1031_REG_CONF2 0x01 | |
51 | #define ADM1031_REG_EXT_TEMP 0x06 | |
1da177e4 LT |
52 | |
53 | #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */ | |
54 | #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */ | |
55 | #define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */ | |
56 | ||
57 | #define ADM1031_CONF2_PWM1_ENABLE 0x01 | |
58 | #define ADM1031_CONF2_PWM2_ENABLE 0x02 | |
59 | #define ADM1031_CONF2_TACH1_ENABLE 0x04 | |
60 | #define ADM1031_CONF2_TACH2_ENABLE 0x08 | |
61 | #define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan)) | |
62 | ||
63 | /* Addresses to scan */ | |
64 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; | |
1da177e4 LT |
65 | |
66 | /* Insmod parameters */ | |
f4b50261 | 67 | I2C_CLIENT_INSMOD_2(adm1030, adm1031); |
1da177e4 LT |
68 | |
69 | typedef u8 auto_chan_table_t[8][2]; | |
70 | ||
71 | /* Each client has this additional data */ | |
72 | struct adm1031_data { | |
73 | struct i2c_client client; | |
1beeffe4 | 74 | struct device *hwmon_dev; |
9a61bf63 | 75 | struct mutex update_lock; |
1da177e4 LT |
76 | int chip_type; |
77 | char valid; /* !=0 if following fields are valid */ | |
78 | unsigned long last_updated; /* In jiffies */ | |
79 | /* The chan_select_table contains the possible configurations for | |
80 | * auto fan control. | |
81 | */ | |
6d6006b8 | 82 | const auto_chan_table_t *chan_select_table; |
1da177e4 LT |
83 | u16 alarm; |
84 | u8 conf1; | |
85 | u8 conf2; | |
86 | u8 fan[2]; | |
87 | u8 fan_div[2]; | |
88 | u8 fan_min[2]; | |
89 | u8 pwm[2]; | |
90 | u8 old_pwm[2]; | |
91 | s8 temp[3]; | |
92 | u8 ext_temp[3]; | |
93 | u8 auto_temp[3]; | |
94 | u8 auto_temp_min[3]; | |
95 | u8 auto_temp_off[3]; | |
96 | u8 auto_temp_max[3]; | |
97 | s8 temp_min[3]; | |
98 | s8 temp_max[3]; | |
99 | s8 temp_crit[3]; | |
100 | }; | |
101 | ||
102 | static int adm1031_attach_adapter(struct i2c_adapter *adapter); | |
103 | static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind); | |
104 | static void adm1031_init_client(struct i2c_client *client); | |
105 | static int adm1031_detach_client(struct i2c_client *client); | |
106 | static struct adm1031_data *adm1031_update_device(struct device *dev); | |
107 | ||
108 | /* This is the driver that will be inserted */ | |
109 | static struct i2c_driver adm1031_driver = { | |
cdaf7934 | 110 | .driver = { |
cdaf7934 LR |
111 | .name = "adm1031", |
112 | }, | |
1da177e4 LT |
113 | .attach_adapter = adm1031_attach_adapter, |
114 | .detach_client = adm1031_detach_client, | |
115 | }; | |
116 | ||
117 | static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg) | |
118 | { | |
119 | return i2c_smbus_read_byte_data(client, reg); | |
120 | } | |
121 | ||
122 | static inline int | |
123 | adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value) | |
124 | { | |
125 | return i2c_smbus_write_byte_data(client, reg, value); | |
126 | } | |
127 | ||
128 | ||
129 | #define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \ | |
130 | ((val + 500) / 1000))) | |
131 | ||
132 | #define TEMP_FROM_REG(val) ((val) * 1000) | |
133 | ||
134 | #define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125) | |
135 | ||
136 | #define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0) | |
137 | ||
138 | static int FAN_TO_REG(int reg, int div) | |
139 | { | |
140 | int tmp; | |
141 | tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div); | |
142 | return tmp > 255 ? 255 : tmp; | |
143 | } | |
144 | ||
145 | #define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6)) | |
146 | ||
147 | #define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4) | |
148 | #define PWM_FROM_REG(val) ((val) << 4) | |
149 | ||
150 | #define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7) | |
151 | #define FAN_CHAN_TO_REG(val, reg) \ | |
152 | (((reg) & 0x1F) | (((val) << 5) & 0xe0)) | |
153 | ||
154 | #define AUTO_TEMP_MIN_TO_REG(val, reg) \ | |
155 | ((((val)/500) & 0xf8)|((reg) & 0x7)) | |
156 | #define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7))) | |
157 | #define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2)) | |
158 | ||
159 | #define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2) | |
160 | ||
161 | #define AUTO_TEMP_OFF_FROM_REG(reg) \ | |
162 | (AUTO_TEMP_MIN_FROM_REG(reg) - 5000) | |
163 | ||
164 | #define AUTO_TEMP_MAX_FROM_REG(reg) \ | |
165 | (AUTO_TEMP_RANGE_FROM_REG(reg) + \ | |
166 | AUTO_TEMP_MIN_FROM_REG(reg)) | |
167 | ||
168 | static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm) | |
169 | { | |
170 | int ret; | |
171 | int range = val - AUTO_TEMP_MIN_FROM_REG(reg); | |
172 | ||
173 | range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm); | |
174 | ret = ((reg & 0xf8) | | |
175 | (range < 10000 ? 0 : | |
176 | range < 20000 ? 1 : | |
177 | range < 40000 ? 2 : range < 80000 ? 3 : 4)); | |
178 | return ret; | |
179 | } | |
180 | ||
181 | /* FAN auto control */ | |
182 | #define GET_FAN_AUTO_BITFIELD(data, idx) \ | |
183 | (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2] | |
184 | ||
6d6006b8 | 185 | /* The tables below contains the possible values for the auto fan |
1da177e4 LT |
186 | * control bitfields. the index in the table is the register value. |
187 | * MSb is the auto fan control enable bit, so the four first entries | |
188 | * in the table disables auto fan control when both bitfields are zero. | |
189 | */ | |
6d6006b8 JD |
190 | static const auto_chan_table_t auto_channel_select_table_adm1031 = { |
191 | { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, | |
192 | { 2 /* 0b010 */ , 4 /* 0b100 */ }, | |
193 | { 2 /* 0b010 */ , 2 /* 0b010 */ }, | |
194 | { 4 /* 0b100 */ , 4 /* 0b100 */ }, | |
195 | { 7 /* 0b111 */ , 7 /* 0b111 */ }, | |
1da177e4 LT |
196 | }; |
197 | ||
6d6006b8 JD |
198 | static const auto_chan_table_t auto_channel_select_table_adm1030 = { |
199 | { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, | |
200 | { 2 /* 0b10 */ , 0 }, | |
201 | { 0xff /* invalid */ , 0 }, | |
202 | { 0xff /* invalid */ , 0 }, | |
203 | { 3 /* 0b11 */ , 0 }, | |
1da177e4 LT |
204 | }; |
205 | ||
206 | /* That function checks if a bitfield is valid and returns the other bitfield | |
207 | * nearest match if no exact match where found. | |
208 | */ | |
209 | static int | |
210 | get_fan_auto_nearest(struct adm1031_data *data, | |
211 | int chan, u8 val, u8 reg, u8 * new_reg) | |
212 | { | |
213 | int i; | |
214 | int first_match = -1, exact_match = -1; | |
215 | u8 other_reg_val = | |
216 | (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1]; | |
217 | ||
218 | if (val == 0) { | |
219 | *new_reg = 0; | |
220 | return 0; | |
221 | } | |
222 | ||
223 | for (i = 0; i < 8; i++) { | |
224 | if ((val == (*data->chan_select_table)[i][chan]) && | |
225 | ((*data->chan_select_table)[i][chan ? 0 : 1] == | |
226 | other_reg_val)) { | |
227 | /* We found an exact match */ | |
228 | exact_match = i; | |
229 | break; | |
230 | } else if (val == (*data->chan_select_table)[i][chan] && | |
231 | first_match == -1) { | |
6d6006b8 JD |
232 | /* Save the first match in case of an exact match has |
233 | * not been found | |
1da177e4 LT |
234 | */ |
235 | first_match = i; | |
236 | } | |
237 | } | |
238 | ||
239 | if (exact_match >= 0) { | |
240 | *new_reg = exact_match; | |
241 | } else if (first_match >= 0) { | |
242 | *new_reg = first_match; | |
243 | } else { | |
244 | return -EINVAL; | |
245 | } | |
246 | return 0; | |
247 | } | |
248 | ||
c801082d JD |
249 | static ssize_t show_fan_auto_channel(struct device *dev, |
250 | struct device_attribute *attr, char *buf) | |
1da177e4 | 251 | { |
c801082d | 252 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
253 | struct adm1031_data *data = adm1031_update_device(dev); |
254 | return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr)); | |
255 | } | |
256 | ||
257 | static ssize_t | |
c801082d JD |
258 | set_fan_auto_channel(struct device *dev, struct device_attribute *attr, |
259 | const char *buf, size_t count) | |
1da177e4 LT |
260 | { |
261 | struct i2c_client *client = to_i2c_client(dev); | |
262 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 263 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
264 | int val = simple_strtol(buf, NULL, 10); |
265 | u8 reg; | |
266 | int ret; | |
267 | u8 old_fan_mode; | |
268 | ||
269 | old_fan_mode = data->conf1; | |
270 | ||
9a61bf63 | 271 | mutex_lock(&data->update_lock); |
6d6006b8 | 272 | |
1da177e4 | 273 | if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) { |
9a61bf63 | 274 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
275 | return ret; |
276 | } | |
6d6006b8 JD |
277 | data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1); |
278 | if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^ | |
1da177e4 LT |
279 | (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) { |
280 | if (data->conf1 & ADM1031_CONF1_AUTO_MODE){ | |
6d6006b8 JD |
281 | /* Switch to Auto Fan Mode |
282 | * Save PWM registers | |
1da177e4 LT |
283 | * Set PWM registers to 33% Both */ |
284 | data->old_pwm[0] = data->pwm[0]; | |
285 | data->old_pwm[1] = data->pwm[1]; | |
286 | adm1031_write_value(client, ADM1031_REG_PWM, 0x55); | |
287 | } else { | |
288 | /* Switch to Manual Mode */ | |
289 | data->pwm[0] = data->old_pwm[0]; | |
290 | data->pwm[1] = data->old_pwm[1]; | |
291 | /* Restore PWM registers */ | |
6d6006b8 | 292 | adm1031_write_value(client, ADM1031_REG_PWM, |
1da177e4 LT |
293 | data->pwm[0] | (data->pwm[1] << 4)); |
294 | } | |
295 | } | |
296 | data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1); | |
297 | adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1); | |
9a61bf63 | 298 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
299 | return count; |
300 | } | |
301 | ||
c801082d JD |
302 | static SENSOR_DEVICE_ATTR(auto_fan1_channel, S_IRUGO | S_IWUSR, |
303 | show_fan_auto_channel, set_fan_auto_channel, 0); | |
304 | static SENSOR_DEVICE_ATTR(auto_fan2_channel, S_IRUGO | S_IWUSR, | |
305 | show_fan_auto_channel, set_fan_auto_channel, 1); | |
1da177e4 LT |
306 | |
307 | /* Auto Temps */ | |
c801082d JD |
308 | static ssize_t show_auto_temp_off(struct device *dev, |
309 | struct device_attribute *attr, char *buf) | |
1da177e4 | 310 | { |
c801082d | 311 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 312 | struct adm1031_data *data = adm1031_update_device(dev); |
6d6006b8 | 313 | return sprintf(buf, "%d\n", |
1da177e4 LT |
314 | AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr])); |
315 | } | |
c801082d JD |
316 | static ssize_t show_auto_temp_min(struct device *dev, |
317 | struct device_attribute *attr, char *buf) | |
1da177e4 | 318 | { |
c801082d | 319 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
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 | |
c801082d JD |
325 | set_auto_temp_min(struct device *dev, struct device_attribute *attr, |
326 | const char *buf, size_t count) | |
1da177e4 LT |
327 | { |
328 | struct i2c_client *client = to_i2c_client(dev); | |
329 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 330 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
331 | int val = simple_strtol(buf, NULL, 10); |
332 | ||
9a61bf63 | 333 | mutex_lock(&data->update_lock); |
1da177e4 LT |
334 | data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]); |
335 | adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), | |
336 | data->auto_temp[nr]); | |
9a61bf63 | 337 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
338 | return count; |
339 | } | |
c801082d JD |
340 | static ssize_t show_auto_temp_max(struct device *dev, |
341 | struct device_attribute *attr, char *buf) | |
1da177e4 | 342 | { |
c801082d | 343 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
344 | struct adm1031_data *data = adm1031_update_device(dev); |
345 | return sprintf(buf, "%d\n", | |
346 | AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr])); | |
347 | } | |
348 | static ssize_t | |
c801082d JD |
349 | set_auto_temp_max(struct device *dev, struct device_attribute *attr, |
350 | const char *buf, size_t count) | |
1da177e4 LT |
351 | { |
352 | struct i2c_client *client = to_i2c_client(dev); | |
353 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 354 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
355 | int val = simple_strtol(buf, NULL, 10); |
356 | ||
9a61bf63 | 357 | mutex_lock(&data->update_lock); |
1da177e4 LT |
358 | data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]); |
359 | adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), | |
360 | data->temp_max[nr]); | |
9a61bf63 | 361 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
362 | return count; |
363 | } | |
364 | ||
c801082d JD |
365 | #define auto_temp_reg(offset) \ |
366 | static SENSOR_DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \ | |
367 | show_auto_temp_off, NULL, offset - 1); \ | |
368 | static SENSOR_DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
369 | show_auto_temp_min, set_auto_temp_min, offset - 1); \ | |
370 | static SENSOR_DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
371 | show_auto_temp_max, set_auto_temp_max, offset - 1) | |
1da177e4 LT |
372 | |
373 | auto_temp_reg(1); | |
374 | auto_temp_reg(2); | |
375 | auto_temp_reg(3); | |
376 | ||
377 | /* pwm */ | |
c801082d JD |
378 | static ssize_t show_pwm(struct device *dev, |
379 | struct device_attribute *attr, char *buf) | |
1da177e4 | 380 | { |
c801082d | 381 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
382 | struct adm1031_data *data = adm1031_update_device(dev); |
383 | return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); | |
384 | } | |
c801082d JD |
385 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
386 | const char *buf, size_t count) | |
1da177e4 LT |
387 | { |
388 | struct i2c_client *client = to_i2c_client(dev); | |
389 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 390 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
391 | int val = simple_strtol(buf, NULL, 10); |
392 | int reg; | |
393 | ||
9a61bf63 | 394 | mutex_lock(&data->update_lock); |
6d6006b8 | 395 | if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) && |
1da177e4 LT |
396 | (((val>>4) & 0xf) != 5)) { |
397 | /* In automatic mode, the only PWM accepted is 33% */ | |
9a61bf63 | 398 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
399 | return -EINVAL; |
400 | } | |
401 | data->pwm[nr] = PWM_TO_REG(val); | |
402 | reg = adm1031_read_value(client, ADM1031_REG_PWM); | |
403 | adm1031_write_value(client, ADM1031_REG_PWM, | |
404 | nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf) | |
405 | : (data->pwm[nr] & 0xf) | (reg & 0xf0)); | |
9a61bf63 | 406 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
407 | return count; |
408 | } | |
409 | ||
c801082d JD |
410 | static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0); |
411 | static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); | |
412 | static SENSOR_DEVICE_ATTR(auto_fan1_min_pwm, S_IRUGO | S_IWUSR, | |
413 | show_pwm, set_pwm, 0); | |
414 | static SENSOR_DEVICE_ATTR(auto_fan2_min_pwm, S_IRUGO | S_IWUSR, | |
415 | show_pwm, set_pwm, 1); | |
1da177e4 LT |
416 | |
417 | /* Fans */ | |
418 | ||
419 | /* | |
420 | * That function checks the cases where the fan reading is not | |
44bbe87e | 421 | * relevant. It is used to provide 0 as fan reading when the fan is |
1da177e4 LT |
422 | * not supposed to run |
423 | */ | |
424 | static int trust_fan_readings(struct adm1031_data *data, int chan) | |
425 | { | |
426 | int res = 0; | |
427 | ||
428 | if (data->conf1 & ADM1031_CONF1_AUTO_MODE) { | |
429 | switch (data->conf1 & 0x60) { | |
430 | case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */ | |
431 | res = data->temp[chan+1] >= | |
432 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]); | |
433 | break; | |
434 | case 0x20: /* remote temp1 controls both fans */ | |
435 | res = | |
436 | data->temp[1] >= | |
437 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]); | |
438 | break; | |
439 | case 0x40: /* remote temp2 controls both fans */ | |
440 | res = | |
441 | data->temp[2] >= | |
442 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]); | |
443 | break; | |
444 | case 0x60: /* max controls both fans */ | |
445 | res = | |
446 | data->temp[0] >= | |
447 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0]) | |
448 | || data->temp[1] >= | |
449 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]) | |
6d6006b8 | 450 | || (data->chip_type == adm1031 |
1da177e4 LT |
451 | && data->temp[2] >= |
452 | AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2])); | |
453 | break; | |
454 | } | |
455 | } else { | |
456 | res = data->pwm[chan] > 0; | |
457 | } | |
458 | return res; | |
459 | } | |
460 | ||
461 | ||
c801082d JD |
462 | static ssize_t show_fan(struct device *dev, |
463 | struct device_attribute *attr, char *buf) | |
1da177e4 | 464 | { |
c801082d | 465 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
466 | struct adm1031_data *data = adm1031_update_device(dev); |
467 | int value; | |
468 | ||
469 | value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr], | |
470 | FAN_DIV_FROM_REG(data->fan_div[nr])) : 0; | |
471 | return sprintf(buf, "%d\n", value); | |
472 | } | |
473 | ||
c801082d JD |
474 | static ssize_t show_fan_div(struct device *dev, |
475 | struct device_attribute *attr, char *buf) | |
1da177e4 | 476 | { |
c801082d | 477 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
478 | struct adm1031_data *data = adm1031_update_device(dev); |
479 | return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr])); | |
480 | } | |
c801082d JD |
481 | static ssize_t show_fan_min(struct device *dev, |
482 | struct device_attribute *attr, char *buf) | |
1da177e4 | 483 | { |
c801082d | 484 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
485 | struct adm1031_data *data = adm1031_update_device(dev); |
486 | return sprintf(buf, "%d\n", | |
487 | FAN_FROM_REG(data->fan_min[nr], | |
488 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
489 | } | |
c801082d JD |
490 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
491 | const char *buf, size_t count) | |
1da177e4 LT |
492 | { |
493 | struct i2c_client *client = to_i2c_client(dev); | |
494 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 495 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
496 | int val = simple_strtol(buf, NULL, 10); |
497 | ||
9a61bf63 | 498 | mutex_lock(&data->update_lock); |
1da177e4 | 499 | if (val) { |
6d6006b8 | 500 | data->fan_min[nr] = |
1da177e4 LT |
501 | FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr])); |
502 | } else { | |
503 | data->fan_min[nr] = 0xff; | |
504 | } | |
505 | adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 506 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
507 | return count; |
508 | } | |
c801082d JD |
509 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
510 | const char *buf, size_t count) | |
1da177e4 LT |
511 | { |
512 | struct i2c_client *client = to_i2c_client(dev); | |
513 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 514 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
515 | int val = simple_strtol(buf, NULL, 10); |
516 | u8 tmp; | |
517 | int old_div; | |
518 | int new_min; | |
519 | ||
520 | tmp = val == 8 ? 0xc0 : | |
521 | val == 4 ? 0x80 : | |
6d6006b8 JD |
522 | val == 2 ? 0x40 : |
523 | val == 1 ? 0x00 : | |
1da177e4 LT |
524 | 0xff; |
525 | if (tmp == 0xff) | |
526 | return -EINVAL; | |
6d6006b8 | 527 | |
9a61bf63 | 528 | mutex_lock(&data->update_lock); |
38a1f0e9 JD |
529 | /* Get fresh readings */ |
530 | data->fan_div[nr] = adm1031_read_value(client, | |
531 | ADM1031_REG_FAN_DIV(nr)); | |
532 | data->fan_min[nr] = adm1031_read_value(client, | |
533 | ADM1031_REG_FAN_MIN(nr)); | |
534 | ||
535 | /* Write the new clock divider and fan min */ | |
1da177e4 | 536 | old_div = FAN_DIV_FROM_REG(data->fan_div[nr]); |
6d6006b8 JD |
537 | data->fan_div[nr] = tmp | (0x3f & data->fan_div[nr]); |
538 | new_min = data->fan_min[nr] * old_div / val; | |
1da177e4 | 539 | data->fan_min[nr] = new_min > 0xff ? 0xff : new_min; |
1da177e4 | 540 | |
6d6006b8 | 541 | adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr), |
1da177e4 | 542 | data->fan_div[nr]); |
6d6006b8 | 543 | adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), |
1da177e4 | 544 | data->fan_min[nr]); |
38a1f0e9 JD |
545 | |
546 | /* Invalidate the cache: fan speed is no longer valid */ | |
547 | data->valid = 0; | |
9a61bf63 | 548 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
549 | return count; |
550 | } | |
551 | ||
552 | #define fan_offset(offset) \ | |
c801082d JD |
553 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
554 | show_fan, NULL, offset - 1); \ | |
555 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
556 | show_fan_min, set_fan_min, offset - 1); \ | |
557 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
558 | show_fan_div, set_fan_div, offset - 1) | |
1da177e4 LT |
559 | |
560 | fan_offset(1); | |
561 | fan_offset(2); | |
562 | ||
563 | ||
564 | /* Temps */ | |
c801082d JD |
565 | static ssize_t show_temp(struct device *dev, |
566 | struct device_attribute *attr, char *buf) | |
1da177e4 | 567 | { |
c801082d | 568 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
569 | struct adm1031_data *data = adm1031_update_device(dev); |
570 | int ext; | |
571 | ext = nr == 0 ? | |
572 | ((data->ext_temp[nr] >> 6) & 0x3) * 2 : | |
573 | (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7)); | |
574 | return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext)); | |
575 | } | |
c801082d JD |
576 | static ssize_t show_temp_min(struct device *dev, |
577 | struct device_attribute *attr, char *buf) | |
1da177e4 | 578 | { |
c801082d | 579 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
580 | struct adm1031_data *data = adm1031_update_device(dev); |
581 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); | |
582 | } | |
c801082d JD |
583 | static ssize_t show_temp_max(struct device *dev, |
584 | struct device_attribute *attr, char *buf) | |
1da177e4 | 585 | { |
c801082d | 586 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
587 | struct adm1031_data *data = adm1031_update_device(dev); |
588 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
589 | } | |
c801082d JD |
590 | static ssize_t show_temp_crit(struct device *dev, |
591 | struct device_attribute *attr, char *buf) | |
1da177e4 | 592 | { |
c801082d | 593 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
594 | struct adm1031_data *data = adm1031_update_device(dev); |
595 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr])); | |
596 | } | |
c801082d JD |
597 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
598 | const char *buf, size_t count) | |
1da177e4 LT |
599 | { |
600 | struct i2c_client *client = to_i2c_client(dev); | |
601 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 602 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
603 | int val; |
604 | ||
605 | val = simple_strtol(buf, NULL, 10); | |
606 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
9a61bf63 | 607 | mutex_lock(&data->update_lock); |
1da177e4 LT |
608 | data->temp_min[nr] = TEMP_TO_REG(val); |
609 | adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr), | |
610 | data->temp_min[nr]); | |
9a61bf63 | 611 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
612 | return count; |
613 | } | |
c801082d JD |
614 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
615 | const char *buf, size_t count) | |
1da177e4 LT |
616 | { |
617 | struct i2c_client *client = to_i2c_client(dev); | |
618 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 619 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
620 | int val; |
621 | ||
622 | val = simple_strtol(buf, NULL, 10); | |
623 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
9a61bf63 | 624 | mutex_lock(&data->update_lock); |
1da177e4 LT |
625 | data->temp_max[nr] = TEMP_TO_REG(val); |
626 | adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr), | |
627 | data->temp_max[nr]); | |
9a61bf63 | 628 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
629 | return count; |
630 | } | |
c801082d JD |
631 | static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr, |
632 | const char *buf, size_t count) | |
1da177e4 LT |
633 | { |
634 | struct i2c_client *client = to_i2c_client(dev); | |
635 | struct adm1031_data *data = i2c_get_clientdata(client); | |
c801082d | 636 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
637 | int val; |
638 | ||
639 | val = simple_strtol(buf, NULL, 10); | |
640 | val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875); | |
9a61bf63 | 641 | mutex_lock(&data->update_lock); |
1da177e4 LT |
642 | data->temp_crit[nr] = TEMP_TO_REG(val); |
643 | adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr), | |
644 | data->temp_crit[nr]); | |
9a61bf63 | 645 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
646 | return count; |
647 | } | |
648 | ||
c801082d JD |
649 | #define temp_reg(offset) \ |
650 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
651 | show_temp, NULL, offset - 1); \ | |
652 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
653 | show_temp_min, set_temp_min, offset - 1); \ | |
654 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
655 | show_temp_max, set_temp_max, offset - 1); \ | |
656 | static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \ | |
657 | show_temp_crit, set_temp_crit, offset - 1) | |
1da177e4 LT |
658 | |
659 | temp_reg(1); | |
660 | temp_reg(2); | |
661 | temp_reg(3); | |
662 | ||
663 | /* Alarms */ | |
30f74292 | 664 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
665 | { |
666 | struct adm1031_data *data = adm1031_update_device(dev); | |
667 | return sprintf(buf, "%d\n", data->alarm); | |
668 | } | |
669 | ||
670 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
671 | ||
672 | ||
673 | static int adm1031_attach_adapter(struct i2c_adapter *adapter) | |
674 | { | |
675 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
676 | return 0; | |
2ed2dc3c | 677 | return i2c_probe(adapter, &addr_data, adm1031_detect); |
1da177e4 LT |
678 | } |
679 | ||
681c6f7a | 680 | static struct attribute *adm1031_attributes[] = { |
c801082d JD |
681 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
682 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
683 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
684 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
685 | &sensor_dev_attr_auto_fan1_channel.dev_attr.attr, | |
686 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
687 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
688 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
689 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
690 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
691 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
692 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
693 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
694 | ||
695 | &sensor_dev_attr_auto_temp1_off.dev_attr.attr, | |
696 | &sensor_dev_attr_auto_temp1_min.dev_attr.attr, | |
697 | &sensor_dev_attr_auto_temp1_max.dev_attr.attr, | |
698 | ||
699 | &sensor_dev_attr_auto_temp2_off.dev_attr.attr, | |
700 | &sensor_dev_attr_auto_temp2_min.dev_attr.attr, | |
701 | &sensor_dev_attr_auto_temp2_max.dev_attr.attr, | |
702 | ||
703 | &sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr, | |
681c6f7a MH |
704 | |
705 | &dev_attr_alarms.attr, | |
706 | ||
707 | NULL | |
708 | }; | |
709 | ||
710 | static const struct attribute_group adm1031_group = { | |
711 | .attrs = adm1031_attributes, | |
712 | }; | |
713 | ||
714 | static struct attribute *adm1031_attributes_opt[] = { | |
c801082d JD |
715 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
716 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
717 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
718 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
719 | &sensor_dev_attr_auto_fan2_channel.dev_attr.attr, | |
720 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
721 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
722 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
723 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
724 | &sensor_dev_attr_auto_temp3_off.dev_attr.attr, | |
725 | &sensor_dev_attr_auto_temp3_min.dev_attr.attr, | |
726 | &sensor_dev_attr_auto_temp3_max.dev_attr.attr, | |
727 | &sensor_dev_attr_auto_fan2_min_pwm.dev_attr.attr, | |
681c6f7a MH |
728 | NULL |
729 | }; | |
730 | ||
731 | static const struct attribute_group adm1031_group_opt = { | |
732 | .attrs = adm1031_attributes_opt, | |
733 | }; | |
734 | ||
2ed2dc3c | 735 | /* This function is called by i2c_probe */ |
1da177e4 LT |
736 | static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind) |
737 | { | |
6d6006b8 | 738 | struct i2c_client *client; |
1da177e4 LT |
739 | struct adm1031_data *data; |
740 | int err = 0; | |
741 | const char *name = ""; | |
742 | ||
743 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
744 | goto exit; | |
745 | ||
ba9c2e8d | 746 | if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) { |
1da177e4 LT |
747 | err = -ENOMEM; |
748 | goto exit; | |
749 | } | |
1da177e4 | 750 | |
6d6006b8 JD |
751 | client = &data->client; |
752 | i2c_set_clientdata(client, data); | |
753 | client->addr = address; | |
754 | client->adapter = adapter; | |
755 | client->driver = &adm1031_driver; | |
1da177e4 LT |
756 | |
757 | if (kind < 0) { | |
758 | int id, co; | |
6d6006b8 JD |
759 | id = i2c_smbus_read_byte_data(client, 0x3d); |
760 | co = i2c_smbus_read_byte_data(client, 0x3e); | |
1da177e4 LT |
761 | |
762 | if (!((id == 0x31 || id == 0x30) && co == 0x41)) | |
763 | goto exit_free; | |
764 | kind = (id == 0x30) ? adm1030 : adm1031; | |
765 | } | |
766 | ||
767 | if (kind <= 0) | |
768 | kind = adm1031; | |
769 | ||
770 | /* Given the detected chip type, set the chip name and the | |
771 | * auto fan control helper table. */ | |
772 | if (kind == adm1030) { | |
773 | name = "adm1030"; | |
774 | data->chan_select_table = &auto_channel_select_table_adm1030; | |
775 | } else if (kind == adm1031) { | |
776 | name = "adm1031"; | |
777 | data->chan_select_table = &auto_channel_select_table_adm1031; | |
778 | } | |
779 | data->chip_type = kind; | |
780 | ||
6d6006b8 | 781 | strlcpy(client->name, name, I2C_NAME_SIZE); |
9a61bf63 | 782 | mutex_init(&data->update_lock); |
1da177e4 LT |
783 | |
784 | /* Tell the I2C layer a new client has arrived */ | |
6d6006b8 | 785 | if ((err = i2c_attach_client(client))) |
1da177e4 LT |
786 | goto exit_free; |
787 | ||
788 | /* Initialize the ADM1031 chip */ | |
6d6006b8 | 789 | adm1031_init_client(client); |
1da177e4 LT |
790 | |
791 | /* Register sysfs hooks */ | |
6d6006b8 | 792 | if ((err = sysfs_create_group(&client->dev.kobj, &adm1031_group))) |
943b0830 | 793 | goto exit_detach; |
1da177e4 LT |
794 | |
795 | if (kind == adm1031) { | |
6d6006b8 | 796 | if ((err = sysfs_create_group(&client->dev.kobj, |
681c6f7a MH |
797 | &adm1031_group_opt))) |
798 | goto exit_remove; | |
799 | } | |
800 | ||
6d6006b8 | 801 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
802 | if (IS_ERR(data->hwmon_dev)) { |
803 | err = PTR_ERR(data->hwmon_dev); | |
681c6f7a | 804 | goto exit_remove; |
1da177e4 LT |
805 | } |
806 | ||
807 | return 0; | |
808 | ||
681c6f7a | 809 | exit_remove: |
6d6006b8 JD |
810 | sysfs_remove_group(&client->dev.kobj, &adm1031_group); |
811 | sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt); | |
943b0830 | 812 | exit_detach: |
6d6006b8 | 813 | i2c_detach_client(client); |
1da177e4 | 814 | exit_free: |
1f57ff89 | 815 | kfree(data); |
1da177e4 LT |
816 | exit: |
817 | return err; | |
818 | } | |
819 | ||
820 | static int adm1031_detach_client(struct i2c_client *client) | |
821 | { | |
943b0830 | 822 | struct adm1031_data *data = i2c_get_clientdata(client); |
1da177e4 | 823 | int ret; |
943b0830 | 824 | |
1beeffe4 | 825 | hwmon_device_unregister(data->hwmon_dev); |
681c6f7a MH |
826 | sysfs_remove_group(&client->dev.kobj, &adm1031_group); |
827 | sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt); | |
1da177e4 LT |
828 | if ((ret = i2c_detach_client(client)) != 0) { |
829 | return ret; | |
830 | } | |
943b0830 | 831 | kfree(data); |
1da177e4 LT |
832 | return 0; |
833 | } | |
834 | ||
835 | static void adm1031_init_client(struct i2c_client *client) | |
836 | { | |
837 | unsigned int read_val; | |
838 | unsigned int mask; | |
839 | struct adm1031_data *data = i2c_get_clientdata(client); | |
840 | ||
841 | mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE); | |
842 | if (data->chip_type == adm1031) { | |
843 | mask |= (ADM1031_CONF2_PWM2_ENABLE | | |
844 | ADM1031_CONF2_TACH2_ENABLE); | |
6d6006b8 | 845 | } |
1da177e4 LT |
846 | /* Initialize the ADM1031 chip (enables fan speed reading ) */ |
847 | read_val = adm1031_read_value(client, ADM1031_REG_CONF2); | |
848 | if ((read_val | mask) != read_val) { | |
849 | adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask); | |
850 | } | |
851 | ||
852 | read_val = adm1031_read_value(client, ADM1031_REG_CONF1); | |
853 | if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) { | |
854 | adm1031_write_value(client, ADM1031_REG_CONF1, read_val | | |
855 | ADM1031_CONF1_MONITOR_ENABLE); | |
856 | } | |
857 | ||
858 | } | |
859 | ||
860 | static struct adm1031_data *adm1031_update_device(struct device *dev) | |
861 | { | |
862 | struct i2c_client *client = to_i2c_client(dev); | |
863 | struct adm1031_data *data = i2c_get_clientdata(client); | |
864 | int chan; | |
865 | ||
9a61bf63 | 866 | mutex_lock(&data->update_lock); |
1da177e4 LT |
867 | |
868 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
869 | || !data->valid) { | |
870 | ||
871 | dev_dbg(&client->dev, "Starting adm1031 update\n"); | |
872 | for (chan = 0; | |
873 | chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) { | |
874 | u8 oldh, newh; | |
875 | ||
876 | oldh = | |
877 | adm1031_read_value(client, ADM1031_REG_TEMP(chan)); | |
878 | data->ext_temp[chan] = | |
879 | adm1031_read_value(client, ADM1031_REG_EXT_TEMP); | |
880 | newh = | |
881 | adm1031_read_value(client, ADM1031_REG_TEMP(chan)); | |
882 | if (newh != oldh) { | |
883 | data->ext_temp[chan] = | |
884 | adm1031_read_value(client, | |
885 | ADM1031_REG_EXT_TEMP); | |
886 | #ifdef DEBUG | |
887 | oldh = | |
888 | adm1031_read_value(client, | |
889 | ADM1031_REG_TEMP(chan)); | |
890 | ||
891 | /* oldh is actually newer */ | |
892 | if (newh != oldh) | |
893 | dev_warn(&client->dev, | |
894 | "Remote temperature may be " | |
895 | "wrong.\n"); | |
896 | #endif | |
897 | } | |
898 | data->temp[chan] = newh; | |
899 | ||
900 | data->temp_min[chan] = | |
901 | adm1031_read_value(client, | |
902 | ADM1031_REG_TEMP_MIN(chan)); | |
903 | data->temp_max[chan] = | |
904 | adm1031_read_value(client, | |
905 | ADM1031_REG_TEMP_MAX(chan)); | |
906 | data->temp_crit[chan] = | |
907 | adm1031_read_value(client, | |
908 | ADM1031_REG_TEMP_CRIT(chan)); | |
909 | data->auto_temp[chan] = | |
910 | adm1031_read_value(client, | |
911 | ADM1031_REG_AUTO_TEMP(chan)); | |
912 | ||
913 | } | |
914 | ||
915 | data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1); | |
916 | data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2); | |
917 | ||
918 | data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0)) | |
919 | | (adm1031_read_value(client, ADM1031_REG_STATUS(1)) | |
920 | << 8); | |
921 | if (data->chip_type == adm1030) { | |
922 | data->alarm &= 0xc0ff; | |
923 | } | |
6d6006b8 | 924 | |
1da177e4 LT |
925 | for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) { |
926 | data->fan_div[chan] = | |
927 | adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan)); | |
928 | data->fan_min[chan] = | |
929 | adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan)); | |
930 | data->fan[chan] = | |
931 | adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan)); | |
932 | data->pwm[chan] = | |
6d6006b8 | 933 | 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >> |
1da177e4 LT |
934 | (4*chan)); |
935 | } | |
936 | data->last_updated = jiffies; | |
937 | data->valid = 1; | |
938 | } | |
939 | ||
9a61bf63 | 940 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
941 | |
942 | return data; | |
943 | } | |
944 | ||
945 | static int __init sensors_adm1031_init(void) | |
946 | { | |
947 | return i2c_add_driver(&adm1031_driver); | |
948 | } | |
949 | ||
950 | static void __exit sensors_adm1031_exit(void) | |
951 | { | |
952 | i2c_del_driver(&adm1031_driver); | |
953 | } | |
954 | ||
955 | MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>"); | |
956 | MODULE_DESCRIPTION("ADM1031/ADM1030 driver"); | |
957 | MODULE_LICENSE("GPL"); | |
958 | ||
959 | module_init(sensors_adm1031_init); | |
960 | module_exit(sensors_adm1031_exit); |