Commit | Line | Data |
---|---|---|
74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b5430a04 | 2 | /* |
ca3c7b63 GR |
3 | * amc6821.c - Part of lm_sensors, Linux kernel modules for hardware |
4 | * monitoring | |
5 | * Copyright (C) 2009 T. Mertelj <tomaz.mertelj@guest.arnes.si> | |
6 | * | |
7 | * Based on max6650.c: | |
8 | * Copyright (C) 2007 Hans J. Koch <hjk@hansjkoch.de> | |
ca3c7b63 | 9 | */ |
b5430a04 | 10 | |
b5430a04 TM |
11 | #include <linux/kernel.h> /* Needed for KERN_INFO */ |
12 | #include <linux/module.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/jiffies.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/hwmon.h> | |
18 | #include <linux/hwmon-sysfs.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/mutex.h> | |
21 | ||
b5430a04 TM |
22 | /* |
23 | * Addresses to scan. | |
24 | */ | |
25 | ||
26 | static const unsigned short normal_i2c[] = {0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e, | |
27 | 0x4c, 0x4d, 0x4e, I2C_CLIENT_END}; | |
28 | ||
b5430a04 TM |
29 | /* |
30 | * Insmod parameters | |
31 | */ | |
32 | ||
a6bee4a5 | 33 | static int pwminv; /*Inverted PWM output. */ |
a7818350 | 34 | module_param(pwminv, int, 0444); |
b5430a04 TM |
35 | |
36 | static int init = 1; /*Power-on initialization.*/ | |
a7818350 | 37 | module_param(init, int, 0444); |
b5430a04 | 38 | |
b5430a04 TM |
39 | enum chips { amc6821 }; |
40 | ||
41 | #define AMC6821_REG_DEV_ID 0x3D | |
42 | #define AMC6821_REG_COMP_ID 0x3E | |
43 | #define AMC6821_REG_CONF1 0x00 | |
44 | #define AMC6821_REG_CONF2 0x01 | |
45 | #define AMC6821_REG_CONF3 0x3F | |
46 | #define AMC6821_REG_CONF4 0x04 | |
47 | #define AMC6821_REG_STAT1 0x02 | |
48 | #define AMC6821_REG_STAT2 0x03 | |
49 | #define AMC6821_REG_TDATA_LOW 0x08 | |
50 | #define AMC6821_REG_TDATA_HI 0x09 | |
51 | #define AMC6821_REG_LTEMP_HI 0x0A | |
52 | #define AMC6821_REG_RTEMP_HI 0x0B | |
53 | #define AMC6821_REG_LTEMP_LIMIT_MIN 0x15 | |
54 | #define AMC6821_REG_LTEMP_LIMIT_MAX 0x14 | |
55 | #define AMC6821_REG_RTEMP_LIMIT_MIN 0x19 | |
56 | #define AMC6821_REG_RTEMP_LIMIT_MAX 0x18 | |
57 | #define AMC6821_REG_LTEMP_CRIT 0x1B | |
58 | #define AMC6821_REG_RTEMP_CRIT 0x1D | |
59 | #define AMC6821_REG_PSV_TEMP 0x1C | |
60 | #define AMC6821_REG_DCY 0x22 | |
61 | #define AMC6821_REG_LTEMP_FAN_CTRL 0x24 | |
62 | #define AMC6821_REG_RTEMP_FAN_CTRL 0x25 | |
63 | #define AMC6821_REG_DCY_LOW_TEMP 0x21 | |
64 | ||
65 | #define AMC6821_REG_TACH_LLIMITL 0x10 | |
66 | #define AMC6821_REG_TACH_LLIMITH 0x11 | |
67 | #define AMC6821_REG_TACH_HLIMITL 0x12 | |
68 | #define AMC6821_REG_TACH_HLIMITH 0x13 | |
69 | ||
70 | #define AMC6821_CONF1_START 0x01 | |
71 | #define AMC6821_CONF1_FAN_INT_EN 0x02 | |
72 | #define AMC6821_CONF1_FANIE 0x04 | |
73 | #define AMC6821_CONF1_PWMINV 0x08 | |
74 | #define AMC6821_CONF1_FAN_FAULT_EN 0x10 | |
75 | #define AMC6821_CONF1_FDRC0 0x20 | |
76 | #define AMC6821_CONF1_FDRC1 0x40 | |
77 | #define AMC6821_CONF1_THERMOVIE 0x80 | |
78 | ||
79 | #define AMC6821_CONF2_PWM_EN 0x01 | |
80 | #define AMC6821_CONF2_TACH_MODE 0x02 | |
81 | #define AMC6821_CONF2_TACH_EN 0x04 | |
82 | #define AMC6821_CONF2_RTFIE 0x08 | |
83 | #define AMC6821_CONF2_LTOIE 0x10 | |
84 | #define AMC6821_CONF2_RTOIE 0x20 | |
85 | #define AMC6821_CONF2_PSVIE 0x40 | |
86 | #define AMC6821_CONF2_RST 0x80 | |
87 | ||
88 | #define AMC6821_CONF3_THERM_FAN_EN 0x80 | |
89 | #define AMC6821_CONF3_REV_MASK 0x0F | |
90 | ||
91 | #define AMC6821_CONF4_OVREN 0x10 | |
92 | #define AMC6821_CONF4_TACH_FAST 0x20 | |
93 | #define AMC6821_CONF4_PSPR 0x40 | |
94 | #define AMC6821_CONF4_MODE 0x80 | |
95 | ||
96 | #define AMC6821_STAT1_RPM_ALARM 0x01 | |
97 | #define AMC6821_STAT1_FANS 0x02 | |
98 | #define AMC6821_STAT1_RTH 0x04 | |
99 | #define AMC6821_STAT1_RTL 0x08 | |
100 | #define AMC6821_STAT1_R_THERM 0x10 | |
101 | #define AMC6821_STAT1_RTF 0x20 | |
102 | #define AMC6821_STAT1_LTH 0x40 | |
103 | #define AMC6821_STAT1_LTL 0x80 | |
104 | ||
105 | #define AMC6821_STAT2_RTC 0x08 | |
106 | #define AMC6821_STAT2_LTC 0x10 | |
107 | #define AMC6821_STAT2_LPSV 0x20 | |
108 | #define AMC6821_STAT2_L_THERM 0x40 | |
109 | #define AMC6821_STAT2_THERM_IN 0x80 | |
110 | ||
111 | enum {IDX_TEMP1_INPUT = 0, IDX_TEMP1_MIN, IDX_TEMP1_MAX, | |
112 | IDX_TEMP1_CRIT, IDX_TEMP2_INPUT, IDX_TEMP2_MIN, | |
113 | IDX_TEMP2_MAX, IDX_TEMP2_CRIT, | |
114 | TEMP_IDX_LEN, }; | |
115 | ||
116 | static const u8 temp_reg[] = {AMC6821_REG_LTEMP_HI, | |
117 | AMC6821_REG_LTEMP_LIMIT_MIN, | |
118 | AMC6821_REG_LTEMP_LIMIT_MAX, | |
119 | AMC6821_REG_LTEMP_CRIT, | |
120 | AMC6821_REG_RTEMP_HI, | |
121 | AMC6821_REG_RTEMP_LIMIT_MIN, | |
122 | AMC6821_REG_RTEMP_LIMIT_MAX, | |
123 | AMC6821_REG_RTEMP_CRIT, }; | |
124 | ||
125 | enum {IDX_FAN1_INPUT = 0, IDX_FAN1_MIN, IDX_FAN1_MAX, | |
126 | FAN1_IDX_LEN, }; | |
127 | ||
128 | static const u8 fan_reg_low[] = {AMC6821_REG_TDATA_LOW, | |
129 | AMC6821_REG_TACH_LLIMITL, | |
130 | AMC6821_REG_TACH_HLIMITL, }; | |
131 | ||
132 | ||
133 | static const u8 fan_reg_hi[] = {AMC6821_REG_TDATA_HI, | |
134 | AMC6821_REG_TACH_LLIMITH, | |
135 | AMC6821_REG_TACH_HLIMITH, }; | |
136 | ||
b5430a04 TM |
137 | /* |
138 | * Client data (each client gets its own) | |
ca3c7b63 | 139 | */ |
b5430a04 TM |
140 | |
141 | struct amc6821_data { | |
1276fae2 | 142 | struct i2c_client *client; |
b5430a04 | 143 | struct mutex update_lock; |
952a11ca | 144 | bool valid; /* false until following fields are valid */ |
b5430a04 TM |
145 | unsigned long last_updated; /* in jiffies */ |
146 | ||
147 | /* register values */ | |
148 | int temp[TEMP_IDX_LEN]; | |
149 | ||
150 | u16 fan[FAN1_IDX_LEN]; | |
151 | u8 fan1_div; | |
152 | ||
153 | u8 pwm1; | |
154 | u8 temp1_auto_point_temp[3]; | |
155 | u8 temp2_auto_point_temp[3]; | |
156 | u8 pwm1_auto_point_pwm[3]; | |
157 | u8 pwm1_enable; | |
158 | u8 pwm1_auto_channels_temp; | |
159 | ||
160 | u8 stat1; | |
161 | u8 stat2; | |
162 | }; | |
163 | ||
28e6274d AL |
164 | static struct amc6821_data *amc6821_update_device(struct device *dev) |
165 | { | |
1276fae2 AL |
166 | struct amc6821_data *data = dev_get_drvdata(dev); |
167 | struct i2c_client *client = data->client; | |
28e6274d AL |
168 | int timeout = HZ; |
169 | u8 reg; | |
170 | int i; | |
171 | ||
172 | mutex_lock(&data->update_lock); | |
173 | ||
174 | if (time_after(jiffies, data->last_updated + timeout) || | |
175 | !data->valid) { | |
176 | ||
177 | for (i = 0; i < TEMP_IDX_LEN; i++) | |
4538bfbf JB |
178 | data->temp[i] = (int8_t)i2c_smbus_read_byte_data( |
179 | client, temp_reg[i]); | |
28e6274d AL |
180 | |
181 | data->stat1 = i2c_smbus_read_byte_data(client, | |
182 | AMC6821_REG_STAT1); | |
183 | data->stat2 = i2c_smbus_read_byte_data(client, | |
184 | AMC6821_REG_STAT2); | |
185 | ||
186 | data->pwm1 = i2c_smbus_read_byte_data(client, | |
187 | AMC6821_REG_DCY); | |
188 | for (i = 0; i < FAN1_IDX_LEN; i++) { | |
189 | data->fan[i] = i2c_smbus_read_byte_data( | |
190 | client, | |
191 | fan_reg_low[i]); | |
192 | data->fan[i] += i2c_smbus_read_byte_data( | |
193 | client, | |
194 | fan_reg_hi[i]) << 8; | |
195 | } | |
196 | data->fan1_div = i2c_smbus_read_byte_data(client, | |
197 | AMC6821_REG_CONF4); | |
198 | data->fan1_div = data->fan1_div & AMC6821_CONF4_PSPR ? 4 : 2; | |
199 | ||
200 | data->pwm1_auto_point_pwm[0] = 0; | |
201 | data->pwm1_auto_point_pwm[2] = 255; | |
202 | data->pwm1_auto_point_pwm[1] = i2c_smbus_read_byte_data(client, | |
203 | AMC6821_REG_DCY_LOW_TEMP); | |
204 | ||
205 | data->temp1_auto_point_temp[0] = | |
206 | i2c_smbus_read_byte_data(client, | |
207 | AMC6821_REG_PSV_TEMP); | |
208 | data->temp2_auto_point_temp[0] = | |
209 | data->temp1_auto_point_temp[0]; | |
210 | reg = i2c_smbus_read_byte_data(client, | |
211 | AMC6821_REG_LTEMP_FAN_CTRL); | |
212 | data->temp1_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
213 | reg &= 0x07; | |
214 | reg = 0x20 >> reg; | |
215 | if (reg > 0) | |
216 | data->temp1_auto_point_temp[2] = | |
217 | data->temp1_auto_point_temp[1] + | |
218 | (data->pwm1_auto_point_pwm[2] - | |
219 | data->pwm1_auto_point_pwm[1]) / reg; | |
220 | else | |
221 | data->temp1_auto_point_temp[2] = 255; | |
222 | ||
223 | reg = i2c_smbus_read_byte_data(client, | |
224 | AMC6821_REG_RTEMP_FAN_CTRL); | |
225 | data->temp2_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
226 | reg &= 0x07; | |
227 | reg = 0x20 >> reg; | |
228 | if (reg > 0) | |
229 | data->temp2_auto_point_temp[2] = | |
230 | data->temp2_auto_point_temp[1] + | |
231 | (data->pwm1_auto_point_pwm[2] - | |
232 | data->pwm1_auto_point_pwm[1]) / reg; | |
233 | else | |
234 | data->temp2_auto_point_temp[2] = 255; | |
235 | ||
236 | reg = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
237 | reg = (reg >> 5) & 0x3; | |
238 | switch (reg) { | |
239 | case 0: /*open loop: software sets pwm1*/ | |
240 | data->pwm1_auto_channels_temp = 0; | |
241 | data->pwm1_enable = 1; | |
242 | break; | |
243 | case 2: /*closed loop: remote T (temp2)*/ | |
244 | data->pwm1_auto_channels_temp = 2; | |
245 | data->pwm1_enable = 2; | |
246 | break; | |
247 | case 3: /*closed loop: local and remote T (temp2)*/ | |
248 | data->pwm1_auto_channels_temp = 3; | |
249 | data->pwm1_enable = 3; | |
250 | break; | |
251 | case 1: /* | |
252 | * semi-open loop: software sets rpm, chip controls | |
253 | * pwm1, currently not implemented | |
254 | */ | |
255 | data->pwm1_auto_channels_temp = 0; | |
256 | data->pwm1_enable = 0; | |
257 | break; | |
258 | } | |
259 | ||
260 | data->last_updated = jiffies; | |
952a11ca | 261 | data->valid = true; |
28e6274d AL |
262 | } |
263 | mutex_unlock(&data->update_lock); | |
264 | return data; | |
265 | } | |
b5430a04 | 266 | |
a7818350 GR |
267 | static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, |
268 | char *buf) | |
b5430a04 TM |
269 | { |
270 | struct amc6821_data *data = amc6821_update_device(dev); | |
271 | int ix = to_sensor_dev_attr(devattr)->index; | |
272 | ||
273 | return sprintf(buf, "%d\n", data->temp[ix] * 1000); | |
274 | } | |
275 | ||
a7818350 GR |
276 | static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
277 | const char *buf, size_t count) | |
b5430a04 | 278 | { |
1276fae2 AL |
279 | struct amc6821_data *data = dev_get_drvdata(dev); |
280 | struct i2c_client *client = data->client; | |
b5430a04 TM |
281 | int ix = to_sensor_dev_attr(attr)->index; |
282 | long val; | |
283 | ||
179c4fdb | 284 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
285 | if (ret) |
286 | return ret; | |
2a844c14 | 287 | val = clamp_val(val / 1000, -128, 127); |
b5430a04 TM |
288 | |
289 | mutex_lock(&data->update_lock); | |
290 | data->temp[ix] = val; | |
291 | if (i2c_smbus_write_byte_data(client, temp_reg[ix], data->temp[ix])) { | |
292 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
293 | count = -EIO; | |
294 | } | |
295 | mutex_unlock(&data->update_lock); | |
296 | return count; | |
297 | } | |
298 | ||
a7818350 GR |
299 | static ssize_t temp_alarm_show(struct device *dev, |
300 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
301 | { |
302 | struct amc6821_data *data = amc6821_update_device(dev); | |
303 | int ix = to_sensor_dev_attr(devattr)->index; | |
304 | u8 flag; | |
305 | ||
306 | switch (ix) { | |
307 | case IDX_TEMP1_MIN: | |
308 | flag = data->stat1 & AMC6821_STAT1_LTL; | |
309 | break; | |
310 | case IDX_TEMP1_MAX: | |
311 | flag = data->stat1 & AMC6821_STAT1_LTH; | |
312 | break; | |
313 | case IDX_TEMP1_CRIT: | |
314 | flag = data->stat2 & AMC6821_STAT2_LTC; | |
315 | break; | |
316 | case IDX_TEMP2_MIN: | |
317 | flag = data->stat1 & AMC6821_STAT1_RTL; | |
318 | break; | |
319 | case IDX_TEMP2_MAX: | |
320 | flag = data->stat1 & AMC6821_STAT1_RTH; | |
321 | break; | |
322 | case IDX_TEMP2_CRIT: | |
323 | flag = data->stat2 & AMC6821_STAT2_RTC; | |
324 | break; | |
325 | default: | |
326 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
327 | return -EINVAL; | |
328 | } | |
329 | if (flag) | |
330 | return sprintf(buf, "1"); | |
331 | else | |
332 | return sprintf(buf, "0"); | |
333 | } | |
334 | ||
a7818350 GR |
335 | static ssize_t temp2_fault_show(struct device *dev, |
336 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
337 | { |
338 | struct amc6821_data *data = amc6821_update_device(dev); | |
339 | if (data->stat1 & AMC6821_STAT1_RTF) | |
340 | return sprintf(buf, "1"); | |
341 | else | |
342 | return sprintf(buf, "0"); | |
343 | } | |
344 | ||
a7818350 GR |
345 | static ssize_t pwm1_show(struct device *dev, struct device_attribute *devattr, |
346 | char *buf) | |
b5430a04 TM |
347 | { |
348 | struct amc6821_data *data = amc6821_update_device(dev); | |
349 | return sprintf(buf, "%d\n", data->pwm1); | |
350 | } | |
351 | ||
a7818350 GR |
352 | static ssize_t pwm1_store(struct device *dev, |
353 | struct device_attribute *devattr, const char *buf, | |
354 | size_t count) | |
b5430a04 | 355 | { |
1276fae2 AL |
356 | struct amc6821_data *data = dev_get_drvdata(dev); |
357 | struct i2c_client *client = data->client; | |
b5430a04 | 358 | long val; |
179c4fdb | 359 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
360 | if (ret) |
361 | return ret; | |
362 | ||
363 | mutex_lock(&data->update_lock); | |
2a844c14 | 364 | data->pwm1 = clamp_val(val , 0, 255); |
b5430a04 TM |
365 | i2c_smbus_write_byte_data(client, AMC6821_REG_DCY, data->pwm1); |
366 | mutex_unlock(&data->update_lock); | |
367 | return count; | |
368 | } | |
369 | ||
a7818350 GR |
370 | static ssize_t pwm1_enable_show(struct device *dev, |
371 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
372 | { |
373 | struct amc6821_data *data = amc6821_update_device(dev); | |
374 | return sprintf(buf, "%d\n", data->pwm1_enable); | |
375 | } | |
376 | ||
a7818350 GR |
377 | static ssize_t pwm1_enable_store(struct device *dev, |
378 | struct device_attribute *attr, | |
379 | const char *buf, size_t count) | |
b5430a04 | 380 | { |
1276fae2 AL |
381 | struct amc6821_data *data = dev_get_drvdata(dev); |
382 | struct i2c_client *client = data->client; | |
b5430a04 | 383 | long val; |
179c4fdb | 384 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
385 | if (config) |
386 | return config; | |
387 | ||
cf44819c | 388 | mutex_lock(&data->update_lock); |
b5430a04 TM |
389 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); |
390 | if (config < 0) { | |
391 | dev_err(&client->dev, | |
392 | "Error reading configuration register, aborting.\n"); | |
cf44819c AL |
393 | count = config; |
394 | goto unlock; | |
b5430a04 TM |
395 | } |
396 | ||
397 | switch (val) { | |
398 | case 1: | |
399 | config &= ~AMC6821_CONF1_FDRC0; | |
400 | config &= ~AMC6821_CONF1_FDRC1; | |
401 | break; | |
402 | case 2: | |
403 | config &= ~AMC6821_CONF1_FDRC0; | |
404 | config |= AMC6821_CONF1_FDRC1; | |
405 | break; | |
406 | case 3: | |
407 | config |= AMC6821_CONF1_FDRC0; | |
408 | config |= AMC6821_CONF1_FDRC1; | |
409 | break; | |
410 | default: | |
cf44819c AL |
411 | count = -EINVAL; |
412 | goto unlock; | |
b5430a04 | 413 | } |
b5430a04 TM |
414 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF1, config)) { |
415 | dev_err(&client->dev, | |
416 | "Configuration register write error, aborting.\n"); | |
417 | count = -EIO; | |
418 | } | |
cf44819c | 419 | unlock: |
b5430a04 TM |
420 | mutex_unlock(&data->update_lock); |
421 | return count; | |
422 | } | |
423 | ||
a7818350 GR |
424 | static ssize_t pwm1_auto_channels_temp_show(struct device *dev, |
425 | struct device_attribute *devattr, | |
426 | char *buf) | |
b5430a04 TM |
427 | { |
428 | struct amc6821_data *data = amc6821_update_device(dev); | |
429 | return sprintf(buf, "%d\n", data->pwm1_auto_channels_temp); | |
430 | } | |
431 | ||
a7818350 GR |
432 | static ssize_t temp_auto_point_temp_show(struct device *dev, |
433 | struct device_attribute *devattr, | |
434 | char *buf) | |
b5430a04 TM |
435 | { |
436 | int ix = to_sensor_dev_attr_2(devattr)->index; | |
437 | int nr = to_sensor_dev_attr_2(devattr)->nr; | |
438 | struct amc6821_data *data = amc6821_update_device(dev); | |
439 | switch (nr) { | |
440 | case 1: | |
441 | return sprintf(buf, "%d\n", | |
442 | data->temp1_auto_point_temp[ix] * 1000); | |
b5430a04 TM |
443 | case 2: |
444 | return sprintf(buf, "%d\n", | |
445 | data->temp2_auto_point_temp[ix] * 1000); | |
b5430a04 TM |
446 | default: |
447 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
448 | return -EINVAL; | |
449 | } | |
450 | } | |
451 | ||
a7818350 GR |
452 | static ssize_t pwm1_auto_point_pwm_show(struct device *dev, |
453 | struct device_attribute *devattr, | |
454 | char *buf) | |
b5430a04 TM |
455 | { |
456 | int ix = to_sensor_dev_attr(devattr)->index; | |
457 | struct amc6821_data *data = amc6821_update_device(dev); | |
458 | return sprintf(buf, "%d\n", data->pwm1_auto_point_pwm[ix]); | |
459 | } | |
460 | ||
b5430a04 TM |
461 | static inline ssize_t set_slope_register(struct i2c_client *client, |
462 | u8 reg, | |
463 | u8 dpwm, | |
464 | u8 *ptemp) | |
465 | { | |
466 | int dt; | |
467 | u8 tmp; | |
468 | ||
469 | dt = ptemp[2]-ptemp[1]; | |
470 | for (tmp = 4; tmp > 0; tmp--) { | |
471 | if (dt * (0x20 >> tmp) >= dpwm) | |
472 | break; | |
473 | } | |
474 | tmp |= (ptemp[1] & 0x7C) << 1; | |
475 | if (i2c_smbus_write_byte_data(client, | |
476 | reg, tmp)) { | |
477 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
478 | return -EIO; | |
479 | } | |
480 | return 0; | |
481 | } | |
482 | ||
a7818350 GR |
483 | static ssize_t temp_auto_point_temp_store(struct device *dev, |
484 | struct device_attribute *attr, | |
485 | const char *buf, size_t count) | |
b5430a04 | 486 | { |
b5430a04 | 487 | struct amc6821_data *data = amc6821_update_device(dev); |
1276fae2 | 488 | struct i2c_client *client = data->client; |
b5430a04 TM |
489 | int ix = to_sensor_dev_attr_2(attr)->index; |
490 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
491 | u8 *ptemp; | |
492 | u8 reg; | |
493 | int dpwm; | |
494 | long val; | |
179c4fdb | 495 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
496 | if (ret) |
497 | return ret; | |
498 | ||
499 | switch (nr) { | |
500 | case 1: | |
501 | ptemp = data->temp1_auto_point_temp; | |
502 | reg = AMC6821_REG_LTEMP_FAN_CTRL; | |
503 | break; | |
504 | case 2: | |
505 | ptemp = data->temp2_auto_point_temp; | |
506 | reg = AMC6821_REG_RTEMP_FAN_CTRL; | |
507 | break; | |
508 | default: | |
509 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
510 | return -EINVAL; | |
511 | } | |
512 | ||
b5430a04 | 513 | mutex_lock(&data->update_lock); |
952a11ca | 514 | data->valid = false; |
cf44819c | 515 | |
b5430a04 TM |
516 | switch (ix) { |
517 | case 0: | |
2a844c14 GR |
518 | ptemp[0] = clamp_val(val / 1000, 0, |
519 | data->temp1_auto_point_temp[1]); | |
520 | ptemp[0] = clamp_val(ptemp[0], 0, | |
521 | data->temp2_auto_point_temp[1]); | |
522 | ptemp[0] = clamp_val(ptemp[0], 0, 63); | |
b5430a04 TM |
523 | if (i2c_smbus_write_byte_data( |
524 | client, | |
525 | AMC6821_REG_PSV_TEMP, | |
526 | ptemp[0])) { | |
527 | dev_err(&client->dev, | |
528 | "Register write error, aborting.\n"); | |
529 | count = -EIO; | |
530 | } | |
531 | goto EXIT; | |
b5430a04 | 532 | case 1: |
2a844c14 | 533 | ptemp[1] = clamp_val(val / 1000, (ptemp[0] & 0x7C) + 4, 124); |
b5430a04 | 534 | ptemp[1] &= 0x7C; |
2a844c14 | 535 | ptemp[2] = clamp_val(ptemp[2], ptemp[1] + 1, 255); |
b5430a04 TM |
536 | break; |
537 | case 2: | |
2a844c14 | 538 | ptemp[2] = clamp_val(val / 1000, ptemp[1]+1, 255); |
b5430a04 TM |
539 | break; |
540 | default: | |
541 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
542 | count = -EINVAL; | |
543 | goto EXIT; | |
544 | } | |
545 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
546 | if (set_slope_register(client, reg, dpwm, ptemp)) | |
547 | count = -EIO; | |
548 | ||
549 | EXIT: | |
550 | mutex_unlock(&data->update_lock); | |
551 | return count; | |
552 | } | |
553 | ||
a7818350 GR |
554 | static ssize_t pwm1_auto_point_pwm_store(struct device *dev, |
555 | struct device_attribute *attr, | |
556 | const char *buf, size_t count) | |
b5430a04 | 557 | { |
1276fae2 AL |
558 | struct amc6821_data *data = dev_get_drvdata(dev); |
559 | struct i2c_client *client = data->client; | |
b5430a04 TM |
560 | int dpwm; |
561 | long val; | |
179c4fdb | 562 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
563 | if (ret) |
564 | return ret; | |
565 | ||
566 | mutex_lock(&data->update_lock); | |
2a844c14 | 567 | data->pwm1_auto_point_pwm[1] = clamp_val(val, 0, 254); |
b5430a04 TM |
568 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_DCY_LOW_TEMP, |
569 | data->pwm1_auto_point_pwm[1])) { | |
570 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
571 | count = -EIO; | |
572 | goto EXIT; | |
573 | } | |
574 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
575 | if (set_slope_register(client, AMC6821_REG_LTEMP_FAN_CTRL, dpwm, | |
576 | data->temp1_auto_point_temp)) { | |
577 | count = -EIO; | |
578 | goto EXIT; | |
579 | } | |
580 | if (set_slope_register(client, AMC6821_REG_RTEMP_FAN_CTRL, dpwm, | |
581 | data->temp2_auto_point_temp)) { | |
582 | count = -EIO; | |
583 | goto EXIT; | |
584 | } | |
585 | ||
586 | EXIT: | |
952a11ca | 587 | data->valid = false; |
b5430a04 TM |
588 | mutex_unlock(&data->update_lock); |
589 | return count; | |
590 | } | |
591 | ||
a7818350 GR |
592 | static ssize_t fan_show(struct device *dev, struct device_attribute *devattr, |
593 | char *buf) | |
b5430a04 TM |
594 | { |
595 | struct amc6821_data *data = amc6821_update_device(dev); | |
596 | int ix = to_sensor_dev_attr(devattr)->index; | |
597 | if (0 == data->fan[ix]) | |
598 | return sprintf(buf, "0"); | |
599 | return sprintf(buf, "%d\n", (int)(6000000 / data->fan[ix])); | |
600 | } | |
601 | ||
a7818350 GR |
602 | static ssize_t fan1_fault_show(struct device *dev, |
603 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
604 | { |
605 | struct amc6821_data *data = amc6821_update_device(dev); | |
606 | if (data->stat1 & AMC6821_STAT1_FANS) | |
607 | return sprintf(buf, "1"); | |
608 | else | |
609 | return sprintf(buf, "0"); | |
610 | } | |
611 | ||
a7818350 GR |
612 | static ssize_t fan_store(struct device *dev, struct device_attribute *attr, |
613 | const char *buf, size_t count) | |
b5430a04 | 614 | { |
1276fae2 AL |
615 | struct amc6821_data *data = dev_get_drvdata(dev); |
616 | struct i2c_client *client = data->client; | |
b5430a04 TM |
617 | long val; |
618 | int ix = to_sensor_dev_attr(attr)->index; | |
179c4fdb | 619 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
620 | if (ret) |
621 | return ret; | |
622 | val = 1 > val ? 0xFFFF : 6000000/val; | |
623 | ||
624 | mutex_lock(&data->update_lock); | |
2a844c14 | 625 | data->fan[ix] = (u16) clamp_val(val, 1, 0xFFFF); |
b5430a04 TM |
626 | if (i2c_smbus_write_byte_data(client, fan_reg_low[ix], |
627 | data->fan[ix] & 0xFF)) { | |
628 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
629 | count = -EIO; | |
630 | goto EXIT; | |
631 | } | |
632 | if (i2c_smbus_write_byte_data(client, | |
633 | fan_reg_hi[ix], data->fan[ix] >> 8)) { | |
634 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
635 | count = -EIO; | |
636 | } | |
637 | EXIT: | |
638 | mutex_unlock(&data->update_lock); | |
639 | return count; | |
640 | } | |
641 | ||
a7818350 GR |
642 | static ssize_t fan1_div_show(struct device *dev, |
643 | struct device_attribute *devattr, char *buf) | |
b5430a04 TM |
644 | { |
645 | struct amc6821_data *data = amc6821_update_device(dev); | |
646 | return sprintf(buf, "%d\n", data->fan1_div); | |
647 | } | |
648 | ||
a7818350 GR |
649 | static ssize_t fan1_div_store(struct device *dev, |
650 | struct device_attribute *attr, const char *buf, | |
651 | size_t count) | |
b5430a04 | 652 | { |
1276fae2 AL |
653 | struct amc6821_data *data = dev_get_drvdata(dev); |
654 | struct i2c_client *client = data->client; | |
b5430a04 | 655 | long val; |
179c4fdb | 656 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
657 | if (config) |
658 | return config; | |
659 | ||
cf44819c | 660 | mutex_lock(&data->update_lock); |
b5430a04 TM |
661 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); |
662 | if (config < 0) { | |
663 | dev_err(&client->dev, | |
664 | "Error reading configuration register, aborting.\n"); | |
cf44819c AL |
665 | count = config; |
666 | goto EXIT; | |
b5430a04 | 667 | } |
b5430a04 TM |
668 | switch (val) { |
669 | case 2: | |
670 | config &= ~AMC6821_CONF4_PSPR; | |
671 | data->fan1_div = 2; | |
672 | break; | |
673 | case 4: | |
674 | config |= AMC6821_CONF4_PSPR; | |
675 | data->fan1_div = 4; | |
676 | break; | |
677 | default: | |
b5430a04 TM |
678 | count = -EINVAL; |
679 | goto EXIT; | |
680 | } | |
681 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, config)) { | |
682 | dev_err(&client->dev, | |
683 | "Configuration register write error, aborting.\n"); | |
684 | count = -EIO; | |
685 | } | |
686 | EXIT: | |
687 | mutex_unlock(&data->update_lock); | |
688 | return count; | |
689 | } | |
690 | ||
a7818350 GR |
691 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, IDX_TEMP1_INPUT); |
692 | static SENSOR_DEVICE_ATTR_RW(temp1_min, temp, IDX_TEMP1_MIN); | |
693 | static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, IDX_TEMP1_MAX); | |
694 | static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, IDX_TEMP1_CRIT); | |
695 | static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, temp_alarm, IDX_TEMP1_MIN); | |
696 | static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, temp_alarm, IDX_TEMP1_MAX); | |
697 | static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, temp_alarm, IDX_TEMP1_CRIT); | |
698 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, IDX_TEMP2_INPUT); | |
699 | static SENSOR_DEVICE_ATTR_RW(temp2_min, temp, IDX_TEMP2_MIN); | |
700 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp, IDX_TEMP2_MAX); | |
701 | static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp, IDX_TEMP2_CRIT); | |
702 | static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp2_fault, 0); | |
703 | static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, temp_alarm, IDX_TEMP2_MIN); | |
704 | static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, temp_alarm, IDX_TEMP2_MAX); | |
705 | static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, temp_alarm, IDX_TEMP2_CRIT); | |
706 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, IDX_FAN1_INPUT); | |
707 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan, IDX_FAN1_MIN); | |
708 | static SENSOR_DEVICE_ATTR_RW(fan1_max, fan, IDX_FAN1_MAX); | |
709 | static SENSOR_DEVICE_ATTR_RO(fan1_fault, fan1_fault, 0); | |
710 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan1_div, 0); | |
711 | ||
712 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm1, 0); | |
713 | static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm1_enable, 0); | |
714 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm1_auto_point_pwm, 0); | |
715 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm1_auto_point_pwm, 1); | |
716 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point3_pwm, pwm1_auto_point_pwm, 2); | |
717 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_channels_temp, pwm1_auto_channels_temp, | |
718 | 0); | |
719 | static SENSOR_DEVICE_ATTR_2_RO(temp1_auto_point1_temp, temp_auto_point_temp, | |
720 | 1, 0); | |
721 | static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, temp_auto_point_temp, | |
722 | 1, 1); | |
723 | static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point3_temp, temp_auto_point_temp, | |
724 | 1, 2); | |
725 | ||
726 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp_auto_point_temp, | |
727 | 2, 0); | |
728 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, temp_auto_point_temp, | |
729 | 2, 1); | |
730 | static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point3_temp, temp_auto_point_temp, | |
731 | 2, 2); | |
b5430a04 | 732 | |
b5430a04 TM |
733 | static struct attribute *amc6821_attrs[] = { |
734 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
735 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
736 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
737 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
738 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
739 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
740 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
741 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
742 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
743 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
744 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
745 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
746 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
747 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
748 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
749 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
750 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
751 | &sensor_dev_attr_fan1_max.dev_attr.attr, | |
752 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
753 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
754 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
755 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
756 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, | |
757 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
758 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
759 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
760 | &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, | |
761 | &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, | |
762 | &sensor_dev_attr_temp1_auto_point3_temp.dev_attr.attr, | |
763 | &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, | |
764 | &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, | |
765 | &sensor_dev_attr_temp2_auto_point3_temp.dev_attr.attr, | |
766 | NULL | |
767 | }; | |
768 | ||
1276fae2 | 769 | ATTRIBUTE_GROUPS(amc6821); |
b5430a04 | 770 | |
b5430a04 TM |
771 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
772 | static int amc6821_detect( | |
773 | struct i2c_client *client, | |
774 | struct i2c_board_info *info) | |
775 | { | |
776 | struct i2c_adapter *adapter = client->adapter; | |
777 | int address = client->addr; | |
778 | int dev_id, comp_id; | |
779 | ||
780 | dev_dbg(&adapter->dev, "amc6821_detect called.\n"); | |
781 | ||
782 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
783 | dev_dbg(&adapter->dev, | |
784 | "amc6821: I2C bus doesn't support byte mode, " | |
785 | "skipping.\n"); | |
786 | return -ENODEV; | |
787 | } | |
788 | ||
789 | dev_id = i2c_smbus_read_byte_data(client, AMC6821_REG_DEV_ID); | |
790 | comp_id = i2c_smbus_read_byte_data(client, AMC6821_REG_COMP_ID); | |
791 | if (dev_id != 0x21 || comp_id != 0x49) { | |
792 | dev_dbg(&adapter->dev, | |
793 | "amc6821: detection failed at 0x%02x.\n", | |
794 | address); | |
795 | return -ENODEV; | |
796 | } | |
797 | ||
ca3c7b63 GR |
798 | /* |
799 | * Bit 7 of the address register is ignored, so we can check the | |
800 | * ID registers again | |
801 | */ | |
b5430a04 TM |
802 | dev_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_DEV_ID); |
803 | comp_id = i2c_smbus_read_byte_data(client, 0x80 | 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 | ||
811 | dev_info(&adapter->dev, "amc6821: chip found at 0x%02x.\n", address); | |
812 | strlcpy(info->type, "amc6821", I2C_NAME_SIZE); | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
b5430a04 TM |
817 | static int amc6821_init_client(struct i2c_client *client) |
818 | { | |
819 | int config; | |
820 | int err = -EIO; | |
821 | ||
822 | if (init) { | |
823 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); | |
824 | ||
825 | if (config < 0) { | |
826 | dev_err(&client->dev, | |
827 | "Error reading configuration register, aborting.\n"); | |
828 | return err; | |
829 | } | |
830 | ||
831 | config |= AMC6821_CONF4_MODE; | |
832 | ||
833 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, | |
834 | config)) { | |
835 | dev_err(&client->dev, | |
836 | "Configuration register write error, aborting.\n"); | |
837 | return err; | |
838 | } | |
839 | ||
840 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF3); | |
841 | ||
842 | if (config < 0) { | |
843 | dev_err(&client->dev, | |
844 | "Error reading configuration register, aborting.\n"); | |
845 | return err; | |
846 | } | |
847 | ||
848 | dev_info(&client->dev, "Revision %d\n", config & 0x0f); | |
849 | ||
850 | config &= ~AMC6821_CONF3_THERM_FAN_EN; | |
851 | ||
852 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF3, | |
853 | config)) { | |
854 | dev_err(&client->dev, | |
855 | "Configuration register write error, aborting.\n"); | |
856 | return err; | |
857 | } | |
858 | ||
859 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF2); | |
860 | ||
861 | if (config < 0) { | |
862 | dev_err(&client->dev, | |
863 | "Error reading configuration register, aborting.\n"); | |
864 | return err; | |
865 | } | |
866 | ||
867 | config &= ~AMC6821_CONF2_RTFIE; | |
868 | config &= ~AMC6821_CONF2_LTOIE; | |
869 | config &= ~AMC6821_CONF2_RTOIE; | |
870 | if (i2c_smbus_write_byte_data(client, | |
871 | AMC6821_REG_CONF2, config)) { | |
872 | dev_err(&client->dev, | |
873 | "Configuration register write error, aborting.\n"); | |
874 | return err; | |
875 | } | |
876 | ||
877 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
878 | ||
879 | if (config < 0) { | |
880 | dev_err(&client->dev, | |
881 | "Error reading configuration register, aborting.\n"); | |
882 | return err; | |
883 | } | |
884 | ||
885 | config &= ~AMC6821_CONF1_THERMOVIE; | |
886 | config &= ~AMC6821_CONF1_FANIE; | |
887 | config |= AMC6821_CONF1_START; | |
888 | if (pwminv) | |
889 | config |= AMC6821_CONF1_PWMINV; | |
890 | else | |
891 | config &= ~AMC6821_CONF1_PWMINV; | |
892 | ||
893 | if (i2c_smbus_write_byte_data( | |
894 | client, AMC6821_REG_CONF1, config)) { | |
895 | dev_err(&client->dev, | |
896 | "Configuration register write error, aborting.\n"); | |
897 | return err; | |
898 | } | |
899 | } | |
900 | return 0; | |
901 | } | |
902 | ||
67487038 | 903 | static int amc6821_probe(struct i2c_client *client) |
b5430a04 | 904 | { |
1276fae2 | 905 | struct device *dev = &client->dev; |
28e6274d | 906 | struct amc6821_data *data; |
1276fae2 | 907 | struct device *hwmon_dev; |
28e6274d | 908 | int err; |
b5430a04 | 909 | |
1276fae2 | 910 | data = devm_kzalloc(dev, sizeof(struct amc6821_data), GFP_KERNEL); |
28e6274d AL |
911 | if (!data) |
912 | return -ENOMEM; | |
b5430a04 | 913 | |
1276fae2 | 914 | data->client = client; |
28e6274d | 915 | mutex_init(&data->update_lock); |
b5430a04 | 916 | |
28e6274d AL |
917 | /* |
918 | * Initialize the amc6821 chip | |
919 | */ | |
920 | err = amc6821_init_client(client); | |
921 | if (err) | |
922 | return err; | |
b5430a04 | 923 | |
1276fae2 AL |
924 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
925 | data, | |
926 | amc6821_groups); | |
927 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
b5430a04 TM |
928 | } |
929 | ||
28e6274d AL |
930 | static const struct i2c_device_id amc6821_id[] = { |
931 | { "amc6821", amc6821 }, | |
932 | { } | |
933 | }; | |
934 | ||
935 | MODULE_DEVICE_TABLE(i2c, amc6821_id); | |
936 | ||
937 | static struct i2c_driver amc6821_driver = { | |
938 | .class = I2C_CLASS_HWMON, | |
939 | .driver = { | |
940 | .name = "amc6821", | |
941 | }, | |
67487038 | 942 | .probe_new = amc6821_probe, |
28e6274d AL |
943 | .id_table = amc6821_id, |
944 | .detect = amc6821_detect, | |
945 | .address_list = normal_i2c, | |
946 | }; | |
947 | ||
f0967eea | 948 | module_i2c_driver(amc6821_driver); |
b5430a04 TM |
949 | |
950 | MODULE_LICENSE("GPL"); | |
951 | MODULE_AUTHOR("T. Mertelj <tomaz.mertelj@guest.arnes.si>"); | |
952 | MODULE_DESCRIPTION("Texas Instruments amc6821 hwmon driver"); |