Commit | Line | Data |
---|---|---|
b5430a04 | 1 | /* |
ca3c7b63 GR |
2 | * amc6821.c - Part of lm_sensors, Linux kernel modules for hardware |
3 | * monitoring | |
4 | * Copyright (C) 2009 T. Mertelj <tomaz.mertelj@guest.arnes.si> | |
5 | * | |
6 | * Based on max6650.c: | |
7 | * Copyright (C) 2007 Hans J. Koch <hjk@hansjkoch.de> | |
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 | */ | |
b5430a04 | 23 | |
b5430a04 TM |
24 | #include <linux/kernel.h> /* Needed for KERN_INFO */ |
25 | #include <linux/module.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/jiffies.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/hwmon.h> | |
31 | #include <linux/hwmon-sysfs.h> | |
32 | #include <linux/err.h> | |
33 | #include <linux/mutex.h> | |
34 | ||
b5430a04 TM |
35 | /* |
36 | * Addresses to scan. | |
37 | */ | |
38 | ||
39 | static const unsigned short normal_i2c[] = {0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e, | |
40 | 0x4c, 0x4d, 0x4e, I2C_CLIENT_END}; | |
41 | ||
b5430a04 TM |
42 | /* |
43 | * Insmod parameters | |
44 | */ | |
45 | ||
a6bee4a5 | 46 | static int pwminv; /*Inverted PWM output. */ |
a7818350 | 47 | module_param(pwminv, int, 0444); |
b5430a04 TM |
48 | |
49 | static int init = 1; /*Power-on initialization.*/ | |
a7818350 | 50 | module_param(init, int, 0444); |
b5430a04 | 51 | |
b5430a04 TM |
52 | enum chips { amc6821 }; |
53 | ||
54 | #define AMC6821_REG_DEV_ID 0x3D | |
55 | #define AMC6821_REG_COMP_ID 0x3E | |
56 | #define AMC6821_REG_CONF1 0x00 | |
57 | #define AMC6821_REG_CONF2 0x01 | |
58 | #define AMC6821_REG_CONF3 0x3F | |
59 | #define AMC6821_REG_CONF4 0x04 | |
60 | #define AMC6821_REG_STAT1 0x02 | |
61 | #define AMC6821_REG_STAT2 0x03 | |
62 | #define AMC6821_REG_TDATA_LOW 0x08 | |
63 | #define AMC6821_REG_TDATA_HI 0x09 | |
64 | #define AMC6821_REG_LTEMP_HI 0x0A | |
65 | #define AMC6821_REG_RTEMP_HI 0x0B | |
66 | #define AMC6821_REG_LTEMP_LIMIT_MIN 0x15 | |
67 | #define AMC6821_REG_LTEMP_LIMIT_MAX 0x14 | |
68 | #define AMC6821_REG_RTEMP_LIMIT_MIN 0x19 | |
69 | #define AMC6821_REG_RTEMP_LIMIT_MAX 0x18 | |
70 | #define AMC6821_REG_LTEMP_CRIT 0x1B | |
71 | #define AMC6821_REG_RTEMP_CRIT 0x1D | |
72 | #define AMC6821_REG_PSV_TEMP 0x1C | |
73 | #define AMC6821_REG_DCY 0x22 | |
74 | #define AMC6821_REG_LTEMP_FAN_CTRL 0x24 | |
75 | #define AMC6821_REG_RTEMP_FAN_CTRL 0x25 | |
76 | #define AMC6821_REG_DCY_LOW_TEMP 0x21 | |
77 | ||
78 | #define AMC6821_REG_TACH_LLIMITL 0x10 | |
79 | #define AMC6821_REG_TACH_LLIMITH 0x11 | |
80 | #define AMC6821_REG_TACH_HLIMITL 0x12 | |
81 | #define AMC6821_REG_TACH_HLIMITH 0x13 | |
82 | ||
83 | #define AMC6821_CONF1_START 0x01 | |
84 | #define AMC6821_CONF1_FAN_INT_EN 0x02 | |
85 | #define AMC6821_CONF1_FANIE 0x04 | |
86 | #define AMC6821_CONF1_PWMINV 0x08 | |
87 | #define AMC6821_CONF1_FAN_FAULT_EN 0x10 | |
88 | #define AMC6821_CONF1_FDRC0 0x20 | |
89 | #define AMC6821_CONF1_FDRC1 0x40 | |
90 | #define AMC6821_CONF1_THERMOVIE 0x80 | |
91 | ||
92 | #define AMC6821_CONF2_PWM_EN 0x01 | |
93 | #define AMC6821_CONF2_TACH_MODE 0x02 | |
94 | #define AMC6821_CONF2_TACH_EN 0x04 | |
95 | #define AMC6821_CONF2_RTFIE 0x08 | |
96 | #define AMC6821_CONF2_LTOIE 0x10 | |
97 | #define AMC6821_CONF2_RTOIE 0x20 | |
98 | #define AMC6821_CONF2_PSVIE 0x40 | |
99 | #define AMC6821_CONF2_RST 0x80 | |
100 | ||
101 | #define AMC6821_CONF3_THERM_FAN_EN 0x80 | |
102 | #define AMC6821_CONF3_REV_MASK 0x0F | |
103 | ||
104 | #define AMC6821_CONF4_OVREN 0x10 | |
105 | #define AMC6821_CONF4_TACH_FAST 0x20 | |
106 | #define AMC6821_CONF4_PSPR 0x40 | |
107 | #define AMC6821_CONF4_MODE 0x80 | |
108 | ||
109 | #define AMC6821_STAT1_RPM_ALARM 0x01 | |
110 | #define AMC6821_STAT1_FANS 0x02 | |
111 | #define AMC6821_STAT1_RTH 0x04 | |
112 | #define AMC6821_STAT1_RTL 0x08 | |
113 | #define AMC6821_STAT1_R_THERM 0x10 | |
114 | #define AMC6821_STAT1_RTF 0x20 | |
115 | #define AMC6821_STAT1_LTH 0x40 | |
116 | #define AMC6821_STAT1_LTL 0x80 | |
117 | ||
118 | #define AMC6821_STAT2_RTC 0x08 | |
119 | #define AMC6821_STAT2_LTC 0x10 | |
120 | #define AMC6821_STAT2_LPSV 0x20 | |
121 | #define AMC6821_STAT2_L_THERM 0x40 | |
122 | #define AMC6821_STAT2_THERM_IN 0x80 | |
123 | ||
124 | enum {IDX_TEMP1_INPUT = 0, IDX_TEMP1_MIN, IDX_TEMP1_MAX, | |
125 | IDX_TEMP1_CRIT, IDX_TEMP2_INPUT, IDX_TEMP2_MIN, | |
126 | IDX_TEMP2_MAX, IDX_TEMP2_CRIT, | |
127 | TEMP_IDX_LEN, }; | |
128 | ||
129 | static const u8 temp_reg[] = {AMC6821_REG_LTEMP_HI, | |
130 | AMC6821_REG_LTEMP_LIMIT_MIN, | |
131 | AMC6821_REG_LTEMP_LIMIT_MAX, | |
132 | AMC6821_REG_LTEMP_CRIT, | |
133 | AMC6821_REG_RTEMP_HI, | |
134 | AMC6821_REG_RTEMP_LIMIT_MIN, | |
135 | AMC6821_REG_RTEMP_LIMIT_MAX, | |
136 | AMC6821_REG_RTEMP_CRIT, }; | |
137 | ||
138 | enum {IDX_FAN1_INPUT = 0, IDX_FAN1_MIN, IDX_FAN1_MAX, | |
139 | FAN1_IDX_LEN, }; | |
140 | ||
141 | static const u8 fan_reg_low[] = {AMC6821_REG_TDATA_LOW, | |
142 | AMC6821_REG_TACH_LLIMITL, | |
143 | AMC6821_REG_TACH_HLIMITL, }; | |
144 | ||
145 | ||
146 | static const u8 fan_reg_hi[] = {AMC6821_REG_TDATA_HI, | |
147 | AMC6821_REG_TACH_LLIMITH, | |
148 | AMC6821_REG_TACH_HLIMITH, }; | |
149 | ||
b5430a04 TM |
150 | /* |
151 | * Client data (each client gets its own) | |
ca3c7b63 | 152 | */ |
b5430a04 TM |
153 | |
154 | struct amc6821_data { | |
1276fae2 | 155 | struct i2c_client *client; |
b5430a04 TM |
156 | struct mutex update_lock; |
157 | char valid; /* zero until following fields are valid */ | |
158 | unsigned long last_updated; /* in jiffies */ | |
159 | ||
160 | /* register values */ | |
161 | int temp[TEMP_IDX_LEN]; | |
162 | ||
163 | u16 fan[FAN1_IDX_LEN]; | |
164 | u8 fan1_div; | |
165 | ||
166 | u8 pwm1; | |
167 | u8 temp1_auto_point_temp[3]; | |
168 | u8 temp2_auto_point_temp[3]; | |
169 | u8 pwm1_auto_point_pwm[3]; | |
170 | u8 pwm1_enable; | |
171 | u8 pwm1_auto_channels_temp; | |
172 | ||
173 | u8 stat1; | |
174 | u8 stat2; | |
175 | }; | |
176 | ||
28e6274d AL |
177 | static struct amc6821_data *amc6821_update_device(struct device *dev) |
178 | { | |
1276fae2 AL |
179 | struct amc6821_data *data = dev_get_drvdata(dev); |
180 | struct i2c_client *client = data->client; | |
28e6274d AL |
181 | int timeout = HZ; |
182 | u8 reg; | |
183 | int i; | |
184 | ||
185 | mutex_lock(&data->update_lock); | |
186 | ||
187 | if (time_after(jiffies, data->last_updated + timeout) || | |
188 | !data->valid) { | |
189 | ||
190 | for (i = 0; i < TEMP_IDX_LEN; i++) | |
4538bfbf JB |
191 | data->temp[i] = (int8_t)i2c_smbus_read_byte_data( |
192 | client, temp_reg[i]); | |
28e6274d AL |
193 | |
194 | data->stat1 = i2c_smbus_read_byte_data(client, | |
195 | AMC6821_REG_STAT1); | |
196 | data->stat2 = i2c_smbus_read_byte_data(client, | |
197 | AMC6821_REG_STAT2); | |
198 | ||
199 | data->pwm1 = i2c_smbus_read_byte_data(client, | |
200 | AMC6821_REG_DCY); | |
201 | for (i = 0; i < FAN1_IDX_LEN; i++) { | |
202 | data->fan[i] = i2c_smbus_read_byte_data( | |
203 | client, | |
204 | fan_reg_low[i]); | |
205 | data->fan[i] += i2c_smbus_read_byte_data( | |
206 | client, | |
207 | fan_reg_hi[i]) << 8; | |
208 | } | |
209 | data->fan1_div = i2c_smbus_read_byte_data(client, | |
210 | AMC6821_REG_CONF4); | |
211 | data->fan1_div = data->fan1_div & AMC6821_CONF4_PSPR ? 4 : 2; | |
212 | ||
213 | data->pwm1_auto_point_pwm[0] = 0; | |
214 | data->pwm1_auto_point_pwm[2] = 255; | |
215 | data->pwm1_auto_point_pwm[1] = i2c_smbus_read_byte_data(client, | |
216 | AMC6821_REG_DCY_LOW_TEMP); | |
217 | ||
218 | data->temp1_auto_point_temp[0] = | |
219 | i2c_smbus_read_byte_data(client, | |
220 | AMC6821_REG_PSV_TEMP); | |
221 | data->temp2_auto_point_temp[0] = | |
222 | data->temp1_auto_point_temp[0]; | |
223 | reg = i2c_smbus_read_byte_data(client, | |
224 | AMC6821_REG_LTEMP_FAN_CTRL); | |
225 | data->temp1_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
226 | reg &= 0x07; | |
227 | reg = 0x20 >> reg; | |
228 | if (reg > 0) | |
229 | data->temp1_auto_point_temp[2] = | |
230 | data->temp1_auto_point_temp[1] + | |
231 | (data->pwm1_auto_point_pwm[2] - | |
232 | data->pwm1_auto_point_pwm[1]) / reg; | |
233 | else | |
234 | data->temp1_auto_point_temp[2] = 255; | |
235 | ||
236 | reg = i2c_smbus_read_byte_data(client, | |
237 | AMC6821_REG_RTEMP_FAN_CTRL); | |
238 | data->temp2_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
239 | reg &= 0x07; | |
240 | reg = 0x20 >> reg; | |
241 | if (reg > 0) | |
242 | data->temp2_auto_point_temp[2] = | |
243 | data->temp2_auto_point_temp[1] + | |
244 | (data->pwm1_auto_point_pwm[2] - | |
245 | data->pwm1_auto_point_pwm[1]) / reg; | |
246 | else | |
247 | data->temp2_auto_point_temp[2] = 255; | |
248 | ||
249 | reg = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
250 | reg = (reg >> 5) & 0x3; | |
251 | switch (reg) { | |
252 | case 0: /*open loop: software sets pwm1*/ | |
253 | data->pwm1_auto_channels_temp = 0; | |
254 | data->pwm1_enable = 1; | |
255 | break; | |
256 | case 2: /*closed loop: remote T (temp2)*/ | |
257 | data->pwm1_auto_channels_temp = 2; | |
258 | data->pwm1_enable = 2; | |
259 | break; | |
260 | case 3: /*closed loop: local and remote T (temp2)*/ | |
261 | data->pwm1_auto_channels_temp = 3; | |
262 | data->pwm1_enable = 3; | |
263 | break; | |
264 | case 1: /* | |
265 | * semi-open loop: software sets rpm, chip controls | |
266 | * pwm1, currently not implemented | |
267 | */ | |
268 | data->pwm1_auto_channels_temp = 0; | |
269 | data->pwm1_enable = 0; | |
270 | break; | |
271 | } | |
272 | ||
273 | data->last_updated = jiffies; | |
274 | data->valid = 1; | |
275 | } | |
276 | mutex_unlock(&data->update_lock); | |
277 | return data; | |
278 | } | |
b5430a04 | 279 | |
a7818350 GR |
280 | static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, |
281 | char *buf) | |
b5430a04 TM |
282 | { |
283 | struct amc6821_data *data = amc6821_update_device(dev); | |
284 | int ix = to_sensor_dev_attr(devattr)->index; | |
285 | ||
286 | return sprintf(buf, "%d\n", data->temp[ix] * 1000); | |
287 | } | |
288 | ||
a7818350 GR |
289 | static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
290 | const char *buf, size_t count) | |
b5430a04 | 291 | { |
1276fae2 AL |
292 | struct amc6821_data *data = dev_get_drvdata(dev); |
293 | struct i2c_client *client = data->client; | |
b5430a04 TM |
294 | int ix = to_sensor_dev_attr(attr)->index; |
295 | long val; | |
296 | ||
179c4fdb | 297 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
298 | if (ret) |
299 | return ret; | |
2a844c14 | 300 | val = clamp_val(val / 1000, -128, 127); |
b5430a04 TM |
301 | |
302 | mutex_lock(&data->update_lock); | |
303 | data->temp[ix] = val; | |
304 | if (i2c_smbus_write_byte_data(client, temp_reg[ix], data->temp[ix])) { | |
305 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
306 | count = -EIO; | |
307 | } | |
308 | mutex_unlock(&data->update_lock); | |
309 | return count; | |
310 | } | |
311 | ||
a7818350 GR |
312 | static ssize_t temp_alarm_show(struct device *dev, |
313 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
314 | { |
315 | struct amc6821_data *data = amc6821_update_device(dev); | |
316 | int ix = to_sensor_dev_attr(devattr)->index; | |
317 | u8 flag; | |
318 | ||
319 | switch (ix) { | |
320 | case IDX_TEMP1_MIN: | |
321 | flag = data->stat1 & AMC6821_STAT1_LTL; | |
322 | break; | |
323 | case IDX_TEMP1_MAX: | |
324 | flag = data->stat1 & AMC6821_STAT1_LTH; | |
325 | break; | |
326 | case IDX_TEMP1_CRIT: | |
327 | flag = data->stat2 & AMC6821_STAT2_LTC; | |
328 | break; | |
329 | case IDX_TEMP2_MIN: | |
330 | flag = data->stat1 & AMC6821_STAT1_RTL; | |
331 | break; | |
332 | case IDX_TEMP2_MAX: | |
333 | flag = data->stat1 & AMC6821_STAT1_RTH; | |
334 | break; | |
335 | case IDX_TEMP2_CRIT: | |
336 | flag = data->stat2 & AMC6821_STAT2_RTC; | |
337 | break; | |
338 | default: | |
339 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
340 | return -EINVAL; | |
341 | } | |
342 | if (flag) | |
343 | return sprintf(buf, "1"); | |
344 | else | |
345 | return sprintf(buf, "0"); | |
346 | } | |
347 | ||
a7818350 GR |
348 | static ssize_t temp2_fault_show(struct device *dev, |
349 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
350 | { |
351 | struct amc6821_data *data = amc6821_update_device(dev); | |
352 | if (data->stat1 & AMC6821_STAT1_RTF) | |
353 | return sprintf(buf, "1"); | |
354 | else | |
355 | return sprintf(buf, "0"); | |
356 | } | |
357 | ||
a7818350 GR |
358 | static ssize_t pwm1_show(struct device *dev, struct device_attribute *devattr, |
359 | char *buf) | |
b5430a04 TM |
360 | { |
361 | struct amc6821_data *data = amc6821_update_device(dev); | |
362 | return sprintf(buf, "%d\n", data->pwm1); | |
363 | } | |
364 | ||
a7818350 GR |
365 | static ssize_t pwm1_store(struct device *dev, |
366 | struct device_attribute *devattr, const char *buf, | |
367 | size_t count) | |
b5430a04 | 368 | { |
1276fae2 AL |
369 | struct amc6821_data *data = dev_get_drvdata(dev); |
370 | struct i2c_client *client = data->client; | |
b5430a04 | 371 | long val; |
179c4fdb | 372 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
373 | if (ret) |
374 | return ret; | |
375 | ||
376 | mutex_lock(&data->update_lock); | |
2a844c14 | 377 | data->pwm1 = clamp_val(val , 0, 255); |
b5430a04 TM |
378 | i2c_smbus_write_byte_data(client, AMC6821_REG_DCY, data->pwm1); |
379 | mutex_unlock(&data->update_lock); | |
380 | return count; | |
381 | } | |
382 | ||
a7818350 GR |
383 | static ssize_t pwm1_enable_show(struct device *dev, |
384 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
385 | { |
386 | struct amc6821_data *data = amc6821_update_device(dev); | |
387 | return sprintf(buf, "%d\n", data->pwm1_enable); | |
388 | } | |
389 | ||
a7818350 GR |
390 | static ssize_t pwm1_enable_store(struct device *dev, |
391 | struct device_attribute *attr, | |
392 | const char *buf, size_t count) | |
b5430a04 | 393 | { |
1276fae2 AL |
394 | struct amc6821_data *data = dev_get_drvdata(dev); |
395 | struct i2c_client *client = data->client; | |
b5430a04 | 396 | long val; |
179c4fdb | 397 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
398 | if (config) |
399 | return config; | |
400 | ||
cf44819c | 401 | mutex_lock(&data->update_lock); |
b5430a04 TM |
402 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); |
403 | if (config < 0) { | |
404 | dev_err(&client->dev, | |
405 | "Error reading configuration register, aborting.\n"); | |
cf44819c AL |
406 | count = config; |
407 | goto unlock; | |
b5430a04 TM |
408 | } |
409 | ||
410 | switch (val) { | |
411 | case 1: | |
412 | config &= ~AMC6821_CONF1_FDRC0; | |
413 | config &= ~AMC6821_CONF1_FDRC1; | |
414 | break; | |
415 | case 2: | |
416 | config &= ~AMC6821_CONF1_FDRC0; | |
417 | config |= AMC6821_CONF1_FDRC1; | |
418 | break; | |
419 | case 3: | |
420 | config |= AMC6821_CONF1_FDRC0; | |
421 | config |= AMC6821_CONF1_FDRC1; | |
422 | break; | |
423 | default: | |
cf44819c AL |
424 | count = -EINVAL; |
425 | goto unlock; | |
b5430a04 | 426 | } |
b5430a04 TM |
427 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF1, config)) { |
428 | dev_err(&client->dev, | |
429 | "Configuration register write error, aborting.\n"); | |
430 | count = -EIO; | |
431 | } | |
cf44819c | 432 | unlock: |
b5430a04 TM |
433 | mutex_unlock(&data->update_lock); |
434 | return count; | |
435 | } | |
436 | ||
a7818350 GR |
437 | static ssize_t pwm1_auto_channels_temp_show(struct device *dev, |
438 | struct device_attribute *devattr, | |
439 | char *buf) | |
b5430a04 TM |
440 | { |
441 | struct amc6821_data *data = amc6821_update_device(dev); | |
442 | return sprintf(buf, "%d\n", data->pwm1_auto_channels_temp); | |
443 | } | |
444 | ||
a7818350 GR |
445 | static ssize_t temp_auto_point_temp_show(struct device *dev, |
446 | struct device_attribute *devattr, | |
447 | char *buf) | |
b5430a04 TM |
448 | { |
449 | int ix = to_sensor_dev_attr_2(devattr)->index; | |
450 | int nr = to_sensor_dev_attr_2(devattr)->nr; | |
451 | struct amc6821_data *data = amc6821_update_device(dev); | |
452 | switch (nr) { | |
453 | case 1: | |
454 | return sprintf(buf, "%d\n", | |
455 | data->temp1_auto_point_temp[ix] * 1000); | |
b5430a04 TM |
456 | case 2: |
457 | return sprintf(buf, "%d\n", | |
458 | data->temp2_auto_point_temp[ix] * 1000); | |
b5430a04 TM |
459 | default: |
460 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
461 | return -EINVAL; | |
462 | } | |
463 | } | |
464 | ||
a7818350 GR |
465 | static ssize_t pwm1_auto_point_pwm_show(struct device *dev, |
466 | struct device_attribute *devattr, | |
467 | char *buf) | |
b5430a04 TM |
468 | { |
469 | int ix = to_sensor_dev_attr(devattr)->index; | |
470 | struct amc6821_data *data = amc6821_update_device(dev); | |
471 | return sprintf(buf, "%d\n", data->pwm1_auto_point_pwm[ix]); | |
472 | } | |
473 | ||
b5430a04 TM |
474 | static inline ssize_t set_slope_register(struct i2c_client *client, |
475 | u8 reg, | |
476 | u8 dpwm, | |
477 | u8 *ptemp) | |
478 | { | |
479 | int dt; | |
480 | u8 tmp; | |
481 | ||
482 | dt = ptemp[2]-ptemp[1]; | |
483 | for (tmp = 4; tmp > 0; tmp--) { | |
484 | if (dt * (0x20 >> tmp) >= dpwm) | |
485 | break; | |
486 | } | |
487 | tmp |= (ptemp[1] & 0x7C) << 1; | |
488 | if (i2c_smbus_write_byte_data(client, | |
489 | reg, tmp)) { | |
490 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
491 | return -EIO; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
a7818350 GR |
496 | static ssize_t temp_auto_point_temp_store(struct device *dev, |
497 | struct device_attribute *attr, | |
498 | const char *buf, size_t count) | |
b5430a04 | 499 | { |
b5430a04 | 500 | struct amc6821_data *data = amc6821_update_device(dev); |
1276fae2 | 501 | struct i2c_client *client = data->client; |
b5430a04 TM |
502 | int ix = to_sensor_dev_attr_2(attr)->index; |
503 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
504 | u8 *ptemp; | |
505 | u8 reg; | |
506 | int dpwm; | |
507 | long val; | |
179c4fdb | 508 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
509 | if (ret) |
510 | return ret; | |
511 | ||
512 | switch (nr) { | |
513 | case 1: | |
514 | ptemp = data->temp1_auto_point_temp; | |
515 | reg = AMC6821_REG_LTEMP_FAN_CTRL; | |
516 | break; | |
517 | case 2: | |
518 | ptemp = data->temp2_auto_point_temp; | |
519 | reg = AMC6821_REG_RTEMP_FAN_CTRL; | |
520 | break; | |
521 | default: | |
522 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
523 | return -EINVAL; | |
524 | } | |
525 | ||
b5430a04 | 526 | mutex_lock(&data->update_lock); |
cf44819c AL |
527 | data->valid = 0; |
528 | ||
b5430a04 TM |
529 | switch (ix) { |
530 | case 0: | |
2a844c14 GR |
531 | ptemp[0] = clamp_val(val / 1000, 0, |
532 | data->temp1_auto_point_temp[1]); | |
533 | ptemp[0] = clamp_val(ptemp[0], 0, | |
534 | data->temp2_auto_point_temp[1]); | |
535 | ptemp[0] = clamp_val(ptemp[0], 0, 63); | |
b5430a04 TM |
536 | if (i2c_smbus_write_byte_data( |
537 | client, | |
538 | AMC6821_REG_PSV_TEMP, | |
539 | ptemp[0])) { | |
540 | dev_err(&client->dev, | |
541 | "Register write error, aborting.\n"); | |
542 | count = -EIO; | |
543 | } | |
544 | goto EXIT; | |
b5430a04 | 545 | case 1: |
2a844c14 | 546 | ptemp[1] = clamp_val(val / 1000, (ptemp[0] & 0x7C) + 4, 124); |
b5430a04 | 547 | ptemp[1] &= 0x7C; |
2a844c14 | 548 | ptemp[2] = clamp_val(ptemp[2], ptemp[1] + 1, 255); |
b5430a04 TM |
549 | break; |
550 | case 2: | |
2a844c14 | 551 | ptemp[2] = clamp_val(val / 1000, ptemp[1]+1, 255); |
b5430a04 TM |
552 | break; |
553 | default: | |
554 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
555 | count = -EINVAL; | |
556 | goto EXIT; | |
557 | } | |
558 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
559 | if (set_slope_register(client, reg, dpwm, ptemp)) | |
560 | count = -EIO; | |
561 | ||
562 | EXIT: | |
563 | mutex_unlock(&data->update_lock); | |
564 | return count; | |
565 | } | |
566 | ||
a7818350 GR |
567 | static ssize_t pwm1_auto_point_pwm_store(struct device *dev, |
568 | struct device_attribute *attr, | |
569 | const char *buf, size_t count) | |
b5430a04 | 570 | { |
1276fae2 AL |
571 | struct amc6821_data *data = dev_get_drvdata(dev); |
572 | struct i2c_client *client = data->client; | |
b5430a04 TM |
573 | int dpwm; |
574 | long val; | |
179c4fdb | 575 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
576 | if (ret) |
577 | return ret; | |
578 | ||
579 | mutex_lock(&data->update_lock); | |
2a844c14 | 580 | data->pwm1_auto_point_pwm[1] = clamp_val(val, 0, 254); |
b5430a04 TM |
581 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_DCY_LOW_TEMP, |
582 | data->pwm1_auto_point_pwm[1])) { | |
583 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
584 | count = -EIO; | |
585 | goto EXIT; | |
586 | } | |
587 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
588 | if (set_slope_register(client, AMC6821_REG_LTEMP_FAN_CTRL, dpwm, | |
589 | data->temp1_auto_point_temp)) { | |
590 | count = -EIO; | |
591 | goto EXIT; | |
592 | } | |
593 | if (set_slope_register(client, AMC6821_REG_RTEMP_FAN_CTRL, dpwm, | |
594 | data->temp2_auto_point_temp)) { | |
595 | count = -EIO; | |
596 | goto EXIT; | |
597 | } | |
598 | ||
599 | EXIT: | |
600 | data->valid = 0; | |
601 | mutex_unlock(&data->update_lock); | |
602 | return count; | |
603 | } | |
604 | ||
a7818350 GR |
605 | static ssize_t fan_show(struct device *dev, struct device_attribute *devattr, |
606 | char *buf) | |
b5430a04 TM |
607 | { |
608 | struct amc6821_data *data = amc6821_update_device(dev); | |
609 | int ix = to_sensor_dev_attr(devattr)->index; | |
610 | if (0 == data->fan[ix]) | |
611 | return sprintf(buf, "0"); | |
612 | return sprintf(buf, "%d\n", (int)(6000000 / data->fan[ix])); | |
613 | } | |
614 | ||
a7818350 GR |
615 | static ssize_t fan1_fault_show(struct device *dev, |
616 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
617 | { |
618 | struct amc6821_data *data = amc6821_update_device(dev); | |
619 | if (data->stat1 & AMC6821_STAT1_FANS) | |
620 | return sprintf(buf, "1"); | |
621 | else | |
622 | return sprintf(buf, "0"); | |
623 | } | |
624 | ||
a7818350 GR |
625 | static ssize_t fan_store(struct device *dev, struct device_attribute *attr, |
626 | const char *buf, size_t count) | |
b5430a04 | 627 | { |
1276fae2 AL |
628 | struct amc6821_data *data = dev_get_drvdata(dev); |
629 | struct i2c_client *client = data->client; | |
b5430a04 TM |
630 | long val; |
631 | int ix = to_sensor_dev_attr(attr)->index; | |
179c4fdb | 632 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
633 | if (ret) |
634 | return ret; | |
635 | val = 1 > val ? 0xFFFF : 6000000/val; | |
636 | ||
637 | mutex_lock(&data->update_lock); | |
2a844c14 | 638 | data->fan[ix] = (u16) clamp_val(val, 1, 0xFFFF); |
b5430a04 TM |
639 | if (i2c_smbus_write_byte_data(client, fan_reg_low[ix], |
640 | data->fan[ix] & 0xFF)) { | |
641 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
642 | count = -EIO; | |
643 | goto EXIT; | |
644 | } | |
645 | if (i2c_smbus_write_byte_data(client, | |
646 | fan_reg_hi[ix], data->fan[ix] >> 8)) { | |
647 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
648 | count = -EIO; | |
649 | } | |
650 | EXIT: | |
651 | mutex_unlock(&data->update_lock); | |
652 | return count; | |
653 | } | |
654 | ||
a7818350 GR |
655 | static ssize_t fan1_div_show(struct device *dev, |
656 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
657 | { |
658 | struct amc6821_data *data = amc6821_update_device(dev); | |
659 | return sprintf(buf, "%d\n", data->fan1_div); | |
660 | } | |
661 | ||
a7818350 GR |
662 | static ssize_t fan1_div_store(struct device *dev, |
663 | struct device_attribute *attr, const char *buf, | |
664 | size_t count) | |
b5430a04 | 665 | { |
1276fae2 AL |
666 | struct amc6821_data *data = dev_get_drvdata(dev); |
667 | struct i2c_client *client = data->client; | |
b5430a04 | 668 | long val; |
179c4fdb | 669 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
670 | if (config) |
671 | return config; | |
672 | ||
cf44819c | 673 | mutex_lock(&data->update_lock); |
b5430a04 TM |
674 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); |
675 | if (config < 0) { | |
676 | dev_err(&client->dev, | |
677 | "Error reading configuration register, aborting.\n"); | |
cf44819c AL |
678 | count = config; |
679 | goto EXIT; | |
b5430a04 | 680 | } |
b5430a04 TM |
681 | switch (val) { |
682 | case 2: | |
683 | config &= ~AMC6821_CONF4_PSPR; | |
684 | data->fan1_div = 2; | |
685 | break; | |
686 | case 4: | |
687 | config |= AMC6821_CONF4_PSPR; | |
688 | data->fan1_div = 4; | |
689 | break; | |
690 | default: | |
b5430a04 TM |
691 | count = -EINVAL; |
692 | goto EXIT; | |
693 | } | |
694 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, config)) { | |
695 | dev_err(&client->dev, | |
696 | "Configuration register write error, aborting.\n"); | |
697 | count = -EIO; | |
698 | } | |
699 | EXIT: | |
700 | mutex_unlock(&data->update_lock); | |
701 | return count; | |
702 | } | |
703 | ||
a7818350 GR |
704 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, IDX_TEMP1_INPUT); |
705 | static SENSOR_DEVICE_ATTR_RW(temp1_min, temp, IDX_TEMP1_MIN); | |
706 | static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, IDX_TEMP1_MAX); | |
707 | static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, IDX_TEMP1_CRIT); | |
708 | static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, temp_alarm, IDX_TEMP1_MIN); | |
709 | static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, temp_alarm, IDX_TEMP1_MAX); | |
710 | static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, temp_alarm, IDX_TEMP1_CRIT); | |
711 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, IDX_TEMP2_INPUT); | |
712 | static SENSOR_DEVICE_ATTR_RW(temp2_min, temp, IDX_TEMP2_MIN); | |
713 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp, IDX_TEMP2_MAX); | |
714 | static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp, IDX_TEMP2_CRIT); | |
715 | static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp2_fault, 0); | |
716 | static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, temp_alarm, IDX_TEMP2_MIN); | |
717 | static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, temp_alarm, IDX_TEMP2_MAX); | |
718 | static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, temp_alarm, IDX_TEMP2_CRIT); | |
719 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, IDX_FAN1_INPUT); | |
720 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan, IDX_FAN1_MIN); | |
721 | static SENSOR_DEVICE_ATTR_RW(fan1_max, fan, IDX_FAN1_MAX); | |
722 | static SENSOR_DEVICE_ATTR_RO(fan1_fault, fan1_fault, 0); | |
723 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan1_div, 0); | |
724 | ||
725 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm1, 0); | |
726 | static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm1_enable, 0); | |
727 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm1_auto_point_pwm, 0); | |
728 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm1_auto_point_pwm, 1); | |
729 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point3_pwm, pwm1_auto_point_pwm, 2); | |
730 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_channels_temp, pwm1_auto_channels_temp, | |
731 | 0); | |
732 | static SENSOR_DEVICE_ATTR_2_RO(temp1_auto_point1_temp, temp_auto_point_temp, | |
733 | 1, 0); | |
734 | static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, temp_auto_point_temp, | |
735 | 1, 1); | |
736 | static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point3_temp, temp_auto_point_temp, | |
737 | 1, 2); | |
738 | ||
739 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp_auto_point_temp, | |
740 | 2, 0); | |
741 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, temp_auto_point_temp, | |
742 | 2, 1); | |
743 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point3_temp, temp_auto_point_temp, | |
744 | 2, 2); | |
b5430a04 | 745 | |
b5430a04 TM |
746 | static struct attribute *amc6821_attrs[] = { |
747 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
748 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
749 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
750 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
751 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
752 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
753 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
754 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
755 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
756 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
757 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
758 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
759 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
760 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
761 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
762 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
763 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
764 | &sensor_dev_attr_fan1_max.dev_attr.attr, | |
765 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
766 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
767 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
768 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
769 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, | |
770 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
771 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
772 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
773 | &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, | |
774 | &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, | |
775 | &sensor_dev_attr_temp1_auto_point3_temp.dev_attr.attr, | |
776 | &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, | |
777 | &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, | |
778 | &sensor_dev_attr_temp2_auto_point3_temp.dev_attr.attr, | |
779 | NULL | |
780 | }; | |
781 | ||
1276fae2 | 782 | ATTRIBUTE_GROUPS(amc6821); |
b5430a04 | 783 | |
b5430a04 TM |
784 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
785 | static int amc6821_detect( | |
786 | struct i2c_client *client, | |
787 | struct i2c_board_info *info) | |
788 | { | |
789 | struct i2c_adapter *adapter = client->adapter; | |
790 | int address = client->addr; | |
791 | int dev_id, comp_id; | |
792 | ||
793 | dev_dbg(&adapter->dev, "amc6821_detect called.\n"); | |
794 | ||
795 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
796 | dev_dbg(&adapter->dev, | |
797 | "amc6821: I2C bus doesn't support byte mode, " | |
798 | "skipping.\n"); | |
799 | return -ENODEV; | |
800 | } | |
801 | ||
802 | dev_id = i2c_smbus_read_byte_data(client, AMC6821_REG_DEV_ID); | |
803 | comp_id = i2c_smbus_read_byte_data(client, AMC6821_REG_COMP_ID); | |
804 | if (dev_id != 0x21 || comp_id != 0x49) { | |
805 | dev_dbg(&adapter->dev, | |
806 | "amc6821: detection failed at 0x%02x.\n", | |
807 | address); | |
808 | return -ENODEV; | |
809 | } | |
810 | ||
ca3c7b63 GR |
811 | /* |
812 | * Bit 7 of the address register is ignored, so we can check the | |
813 | * ID registers again | |
814 | */ | |
b5430a04 TM |
815 | dev_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_DEV_ID); |
816 | comp_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_COMP_ID); | |
817 | if (dev_id != 0x21 || comp_id != 0x49) { | |
818 | dev_dbg(&adapter->dev, | |
819 | "amc6821: detection failed at 0x%02x.\n", | |
820 | address); | |
821 | return -ENODEV; | |
822 | } | |
823 | ||
824 | dev_info(&adapter->dev, "amc6821: chip found at 0x%02x.\n", address); | |
825 | strlcpy(info->type, "amc6821", I2C_NAME_SIZE); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
b5430a04 TM |
830 | static int amc6821_init_client(struct i2c_client *client) |
831 | { | |
832 | int config; | |
833 | int err = -EIO; | |
834 | ||
835 | if (init) { | |
836 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); | |
837 | ||
838 | if (config < 0) { | |
839 | dev_err(&client->dev, | |
840 | "Error reading configuration register, aborting.\n"); | |
841 | return err; | |
842 | } | |
843 | ||
844 | config |= AMC6821_CONF4_MODE; | |
845 | ||
846 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, | |
847 | config)) { | |
848 | dev_err(&client->dev, | |
849 | "Configuration register write error, aborting.\n"); | |
850 | return err; | |
851 | } | |
852 | ||
853 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF3); | |
854 | ||
855 | if (config < 0) { | |
856 | dev_err(&client->dev, | |
857 | "Error reading configuration register, aborting.\n"); | |
858 | return err; | |
859 | } | |
860 | ||
861 | dev_info(&client->dev, "Revision %d\n", config & 0x0f); | |
862 | ||
863 | config &= ~AMC6821_CONF3_THERM_FAN_EN; | |
864 | ||
865 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF3, | |
866 | config)) { | |
867 | dev_err(&client->dev, | |
868 | "Configuration register write error, aborting.\n"); | |
869 | return err; | |
870 | } | |
871 | ||
872 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF2); | |
873 | ||
874 | if (config < 0) { | |
875 | dev_err(&client->dev, | |
876 | "Error reading configuration register, aborting.\n"); | |
877 | return err; | |
878 | } | |
879 | ||
880 | config &= ~AMC6821_CONF2_RTFIE; | |
881 | config &= ~AMC6821_CONF2_LTOIE; | |
882 | config &= ~AMC6821_CONF2_RTOIE; | |
883 | if (i2c_smbus_write_byte_data(client, | |
884 | AMC6821_REG_CONF2, config)) { | |
885 | dev_err(&client->dev, | |
886 | "Configuration register write error, aborting.\n"); | |
887 | return err; | |
888 | } | |
889 | ||
890 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
891 | ||
892 | if (config < 0) { | |
893 | dev_err(&client->dev, | |
894 | "Error reading configuration register, aborting.\n"); | |
895 | return err; | |
896 | } | |
897 | ||
898 | config &= ~AMC6821_CONF1_THERMOVIE; | |
899 | config &= ~AMC6821_CONF1_FANIE; | |
900 | config |= AMC6821_CONF1_START; | |
901 | if (pwminv) | |
902 | config |= AMC6821_CONF1_PWMINV; | |
903 | else | |
904 | config &= ~AMC6821_CONF1_PWMINV; | |
905 | ||
906 | if (i2c_smbus_write_byte_data( | |
907 | client, AMC6821_REG_CONF1, config)) { | |
908 | dev_err(&client->dev, | |
909 | "Configuration register write error, aborting.\n"); | |
910 | return err; | |
911 | } | |
912 | } | |
913 | return 0; | |
914 | } | |
915 | ||
28e6274d AL |
916 | static int amc6821_probe(struct i2c_client *client, |
917 | const struct i2c_device_id *id) | |
b5430a04 | 918 | { |
1276fae2 | 919 | struct device *dev = &client->dev; |
28e6274d | 920 | struct amc6821_data *data; |
1276fae2 | 921 | struct device *hwmon_dev; |
28e6274d | 922 | int err; |
b5430a04 | 923 | |
1276fae2 | 924 | data = devm_kzalloc(dev, sizeof(struct amc6821_data), GFP_KERNEL); |
28e6274d AL |
925 | if (!data) |
926 | return -ENOMEM; | |
b5430a04 | 927 | |
1276fae2 | 928 | data->client = client; |
28e6274d | 929 | mutex_init(&data->update_lock); |
b5430a04 | 930 | |
28e6274d AL |
931 | /* |
932 | * Initialize the amc6821 chip | |
933 | */ | |
934 | err = amc6821_init_client(client); | |
935 | if (err) | |
936 | return err; | |
b5430a04 | 937 | |
1276fae2 AL |
938 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
939 | data, | |
940 | amc6821_groups); | |
941 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
b5430a04 TM |
942 | } |
943 | ||
28e6274d AL |
944 | static const struct i2c_device_id amc6821_id[] = { |
945 | { "amc6821", amc6821 }, | |
946 | { } | |
947 | }; | |
948 | ||
949 | MODULE_DEVICE_TABLE(i2c, amc6821_id); | |
950 | ||
951 | static struct i2c_driver amc6821_driver = { | |
952 | .class = I2C_CLASS_HWMON, | |
953 | .driver = { | |
954 | .name = "amc6821", | |
955 | }, | |
956 | .probe = amc6821_probe, | |
28e6274d AL |
957 | .id_table = amc6821_id, |
958 | .detect = amc6821_detect, | |
959 | .address_list = normal_i2c, | |
960 | }; | |
961 | ||
f0967eea | 962 | module_i2c_driver(amc6821_driver); |
b5430a04 TM |
963 | |
964 | MODULE_LICENSE("GPL"); | |
965 | MODULE_AUTHOR("T. Mertelj <tomaz.mertelj@guest.arnes.si>"); | |
966 | MODULE_DESCRIPTION("Texas Instruments amc6821 hwmon driver"); |