Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, | |
96de0e25 | 5 | Kyösti Mälkki <kmalkki@cc.hut.fi> |
1da177e4 LT |
6 | Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net> |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | ||
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
0cacdf29 | 27 | #include <linux/jiffies.h> |
1da177e4 | 28 | #include <linux/i2c.h> |
943b0830 | 29 | #include <linux/hwmon.h> |
86d47f12 | 30 | #include <linux/hwmon-sysfs.h> |
303760b4 | 31 | #include <linux/hwmon-vid.h> |
943b0830 | 32 | #include <linux/err.h> |
9a61bf63 | 33 | #include <linux/mutex.h> |
87808be4 | 34 | #include <linux/sysfs.h> |
1da177e4 LT |
35 | |
36 | /* Type of the extra sensor */ | |
37 | static unsigned short extra_sensor_type; | |
38 | module_param(extra_sensor_type, ushort, 0); | |
39 | MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); | |
40 | ||
41 | /* Addresses to scan */ | |
42 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; | |
1da177e4 LT |
43 | |
44 | /* Insmod parameters */ | |
f4b50261 | 45 | I2C_CLIENT_INSMOD_1(gl520sm); |
1da177e4 | 46 | |
f28dc2f7 | 47 | /* Many GL520 constants specified below |
1da177e4 | 48 | One of the inputs can be configured as either temp or voltage. |
f28dc2f7 | 49 | That's why _TEMP2 and _IN4 access the same register |
1da177e4 LT |
50 | */ |
51 | ||
52 | /* The GL520 registers */ | |
53 | #define GL520_REG_CHIP_ID 0x00 | |
54 | #define GL520_REG_REVISION 0x01 | |
55 | #define GL520_REG_CONF 0x03 | |
56 | #define GL520_REG_MASK 0x11 | |
57 | ||
58 | #define GL520_REG_VID_INPUT 0x02 | |
59 | ||
8b4b0ab4 JD |
60 | static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; |
61 | static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; | |
62 | static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; | |
63 | static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; | |
64 | ||
65 | static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; | |
66 | static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; | |
67 | static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; | |
1da177e4 LT |
68 | |
69 | #define GL520_REG_FAN_INPUT 0x07 | |
70 | #define GL520_REG_FAN_MIN 0x08 | |
71 | #define GL520_REG_FAN_DIV 0x0f | |
72 | #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV | |
73 | ||
74 | #define GL520_REG_ALARMS 0x12 | |
75 | #define GL520_REG_BEEP_MASK 0x10 | |
76 | #define GL520_REG_BEEP_ENABLE GL520_REG_CONF | |
77 | ||
78 | /* | |
79 | * Function declarations | |
80 | */ | |
81 | ||
82 | static int gl520_attach_adapter(struct i2c_adapter *adapter); | |
83 | static int gl520_detect(struct i2c_adapter *adapter, int address, int kind); | |
84 | static void gl520_init_client(struct i2c_client *client); | |
85 | static int gl520_detach_client(struct i2c_client *client); | |
86 | static int gl520_read_value(struct i2c_client *client, u8 reg); | |
87 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); | |
88 | static struct gl520_data *gl520_update_device(struct device *dev); | |
89 | ||
90 | /* Driver data */ | |
91 | static struct i2c_driver gl520_driver = { | |
cdaf7934 | 92 | .driver = { |
cdaf7934 LR |
93 | .name = "gl520sm", |
94 | }, | |
1da177e4 LT |
95 | .attach_adapter = gl520_attach_adapter, |
96 | .detach_client = gl520_detach_client, | |
97 | }; | |
98 | ||
99 | /* Client data */ | |
100 | struct gl520_data { | |
101 | struct i2c_client client; | |
1beeffe4 | 102 | struct device *hwmon_dev; |
9a61bf63 | 103 | struct mutex update_lock; |
1da177e4 LT |
104 | char valid; /* zero until the following fields are valid */ |
105 | unsigned long last_updated; /* in jiffies */ | |
106 | ||
107 | u8 vid; | |
108 | u8 vrm; | |
109 | u8 in_input[5]; /* [0] = VVD */ | |
110 | u8 in_min[5]; /* [0] = VDD */ | |
111 | u8 in_max[5]; /* [0] = VDD */ | |
112 | u8 fan_input[2]; | |
113 | u8 fan_min[2]; | |
114 | u8 fan_div[2]; | |
115 | u8 fan_off; | |
116 | u8 temp_input[2]; | |
117 | u8 temp_max[2]; | |
118 | u8 temp_max_hyst[2]; | |
119 | u8 alarms; | |
120 | u8 beep_enable; | |
121 | u8 beep_mask; | |
122 | u8 alarm_mask; | |
123 | u8 two_temps; | |
124 | }; | |
125 | ||
126 | /* | |
127 | * Sysfs stuff | |
128 | */ | |
129 | ||
86d47f12 JD |
130 | static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr, |
131 | char *buf) | |
1da177e4 | 132 | { |
86d47f12 | 133 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
134 | return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); |
135 | } | |
86d47f12 | 136 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); |
1da177e4 LT |
137 | |
138 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | |
139 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | |
140 | ||
141 | #define IN_FROM_REG(val) ((val)*19) | |
142 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | |
143 | ||
86d47f12 JD |
144 | static ssize_t get_in_input(struct device *dev, struct device_attribute *attr, |
145 | char *buf) | |
1da177e4 | 146 | { |
86d47f12 JD |
147 | int n = to_sensor_dev_attr(attr)->index; |
148 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
149 | u8 r = data->in_input[n]; |
150 | ||
151 | if (n == 0) | |
152 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
153 | else | |
154 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
155 | } | |
156 | ||
86d47f12 JD |
157 | static ssize_t get_in_min(struct device *dev, struct device_attribute *attr, |
158 | char *buf) | |
1da177e4 | 159 | { |
86d47f12 JD |
160 | int n = to_sensor_dev_attr(attr)->index; |
161 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
162 | u8 r = data->in_min[n]; |
163 | ||
164 | if (n == 0) | |
165 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
166 | else | |
167 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
168 | } | |
169 | ||
86d47f12 JD |
170 | static ssize_t get_in_max(struct device *dev, struct device_attribute *attr, |
171 | char *buf) | |
1da177e4 | 172 | { |
86d47f12 JD |
173 | int n = to_sensor_dev_attr(attr)->index; |
174 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
175 | u8 r = data->in_max[n]; |
176 | ||
177 | if (n == 0) | |
178 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
179 | else | |
180 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
181 | } | |
182 | ||
86d47f12 JD |
183 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
184 | const char *buf, size_t count) | |
1da177e4 | 185 | { |
86d47f12 JD |
186 | struct i2c_client *client = to_i2c_client(dev); |
187 | struct gl520_data *data = i2c_get_clientdata(client); | |
188 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
189 | long v = simple_strtol(buf, NULL, 10); |
190 | u8 r; | |
191 | ||
9a61bf63 | 192 | mutex_lock(&data->update_lock); |
1da177e4 LT |
193 | |
194 | if (n == 0) | |
195 | r = VDD_TO_REG(v); | |
196 | else | |
197 | r = IN_TO_REG(v); | |
198 | ||
199 | data->in_min[n] = r; | |
200 | ||
201 | if (n < 4) | |
86d47f12 JD |
202 | gl520_write_value(client, GL520_REG_IN_MIN[n], |
203 | (gl520_read_value(client, GL520_REG_IN_MIN[n]) | |
204 | & ~0xff) | r); | |
1da177e4 | 205 | else |
86d47f12 | 206 | gl520_write_value(client, GL520_REG_IN_MIN[n], r); |
1da177e4 | 207 | |
9a61bf63 | 208 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
209 | return count; |
210 | } | |
211 | ||
86d47f12 JD |
212 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
213 | const char *buf, size_t count) | |
1da177e4 | 214 | { |
86d47f12 JD |
215 | struct i2c_client *client = to_i2c_client(dev); |
216 | struct gl520_data *data = i2c_get_clientdata(client); | |
217 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
218 | long v = simple_strtol(buf, NULL, 10); |
219 | u8 r; | |
220 | ||
221 | if (n == 0) | |
222 | r = VDD_TO_REG(v); | |
223 | else | |
224 | r = IN_TO_REG(v); | |
225 | ||
9a61bf63 | 226 | mutex_lock(&data->update_lock); |
1da177e4 LT |
227 | |
228 | data->in_max[n] = r; | |
229 | ||
230 | if (n < 4) | |
86d47f12 JD |
231 | gl520_write_value(client, GL520_REG_IN_MAX[n], |
232 | (gl520_read_value(client, GL520_REG_IN_MAX[n]) | |
233 | & ~0xff00) | (r << 8)); | |
1da177e4 | 234 | else |
86d47f12 | 235 | gl520_write_value(client, GL520_REG_IN_MAX[n], r); |
1da177e4 | 236 | |
9a61bf63 | 237 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
238 | return count; |
239 | } | |
240 | ||
86d47f12 JD |
241 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0); |
242 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); | |
243 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); | |
244 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); | |
245 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); | |
246 | static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, | |
247 | get_in_min, set_in_min, 0); | |
248 | static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, | |
249 | get_in_min, set_in_min, 1); | |
250 | static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, | |
251 | get_in_min, set_in_min, 2); | |
252 | static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, | |
253 | get_in_min, set_in_min, 3); | |
254 | static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, | |
255 | get_in_min, set_in_min, 4); | |
256 | static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, | |
257 | get_in_max, set_in_max, 0); | |
258 | static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, | |
259 | get_in_max, set_in_max, 1); | |
260 | static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, | |
261 | get_in_max, set_in_max, 2); | |
262 | static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, | |
263 | get_in_max, set_in_max, 3); | |
264 | static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, | |
265 | get_in_max, set_in_max, 4); | |
266 | ||
1da177e4 LT |
267 | #define DIV_FROM_REG(val) (1 << (val)) |
268 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div)))) | |
269 | #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)); | |
270 | ||
86d47f12 JD |
271 | static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr, |
272 | char *buf) | |
1da177e4 | 273 | { |
86d47f12 JD |
274 | int n = to_sensor_dev_attr(attr)->index; |
275 | struct gl520_data *data = gl520_update_device(dev); | |
276 | ||
277 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], | |
278 | data->fan_div[n])); | |
1da177e4 LT |
279 | } |
280 | ||
86d47f12 JD |
281 | static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr, |
282 | char *buf) | |
1da177e4 | 283 | { |
86d47f12 JD |
284 | int n = to_sensor_dev_attr(attr)->index; |
285 | struct gl520_data *data = gl520_update_device(dev); | |
286 | ||
287 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], | |
288 | data->fan_div[n])); | |
1da177e4 LT |
289 | } |
290 | ||
86d47f12 JD |
291 | static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr, |
292 | char *buf) | |
1da177e4 | 293 | { |
86d47f12 JD |
294 | int n = to_sensor_dev_attr(attr)->index; |
295 | struct gl520_data *data = gl520_update_device(dev); | |
296 | ||
297 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); | |
1da177e4 LT |
298 | } |
299 | ||
86d47f12 JD |
300 | static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr, |
301 | char *buf) | |
1da177e4 | 302 | { |
86d47f12 | 303 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
304 | return sprintf(buf, "%d\n", data->fan_off); |
305 | } | |
306 | ||
86d47f12 JD |
307 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
308 | const char *buf, size_t count) | |
1da177e4 | 309 | { |
86d47f12 JD |
310 | struct i2c_client *client = to_i2c_client(dev); |
311 | struct gl520_data *data = i2c_get_clientdata(client); | |
312 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
313 | unsigned long v = simple_strtoul(buf, NULL, 10); |
314 | u8 r; | |
315 | ||
9a61bf63 | 316 | mutex_lock(&data->update_lock); |
86d47f12 JD |
317 | r = FAN_TO_REG(v, data->fan_div[n]); |
318 | data->fan_min[n] = r; | |
1da177e4 | 319 | |
86d47f12 JD |
320 | if (n == 0) |
321 | gl520_write_value(client, GL520_REG_FAN_MIN, | |
322 | (gl520_read_value(client, GL520_REG_FAN_MIN) | |
323 | & ~0xff00) | (r << 8)); | |
1da177e4 | 324 | else |
86d47f12 JD |
325 | gl520_write_value(client, GL520_REG_FAN_MIN, |
326 | (gl520_read_value(client, GL520_REG_FAN_MIN) | |
327 | & ~0xff) | r); | |
1da177e4 LT |
328 | |
329 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
86d47f12 JD |
330 | if (data->fan_min[n] == 0) |
331 | data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; | |
1da177e4 | 332 | else |
86d47f12 | 333 | data->alarm_mask |= (n == 0) ? 0x20 : 0x40; |
1da177e4 LT |
334 | data->beep_mask &= data->alarm_mask; |
335 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
336 | ||
9a61bf63 | 337 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
338 | return count; |
339 | } | |
340 | ||
86d47f12 JD |
341 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
342 | const char *buf, size_t count) | |
1da177e4 | 343 | { |
86d47f12 JD |
344 | struct i2c_client *client = to_i2c_client(dev); |
345 | struct gl520_data *data = i2c_get_clientdata(client); | |
346 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
347 | unsigned long v = simple_strtoul(buf, NULL, 10); |
348 | u8 r; | |
349 | ||
350 | switch (v) { | |
351 | case 1: r = 0; break; | |
352 | case 2: r = 1; break; | |
353 | case 4: r = 2; break; | |
354 | case 8: r = 3; break; | |
355 | default: | |
356 | dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); | |
357 | return -EINVAL; | |
358 | } | |
359 | ||
9a61bf63 | 360 | mutex_lock(&data->update_lock); |
86d47f12 | 361 | data->fan_div[n] = r; |
1da177e4 | 362 | |
86d47f12 JD |
363 | if (n == 0) |
364 | gl520_write_value(client, GL520_REG_FAN_DIV, | |
365 | (gl520_read_value(client, GL520_REG_FAN_DIV) | |
366 | & ~0xc0) | (r << 6)); | |
1da177e4 | 367 | else |
86d47f12 JD |
368 | gl520_write_value(client, GL520_REG_FAN_DIV, |
369 | (gl520_read_value(client, GL520_REG_FAN_DIV) | |
370 | & ~0x30) | (r << 4)); | |
1da177e4 | 371 | |
9a61bf63 | 372 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
373 | return count; |
374 | } | |
375 | ||
86d47f12 JD |
376 | static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr, |
377 | const char *buf, size_t count) | |
1da177e4 | 378 | { |
86d47f12 JD |
379 | struct i2c_client *client = to_i2c_client(dev); |
380 | struct gl520_data *data = i2c_get_clientdata(client); | |
1da177e4 LT |
381 | u8 r = simple_strtoul(buf, NULL, 10)?1:0; |
382 | ||
9a61bf63 | 383 | mutex_lock(&data->update_lock); |
1da177e4 | 384 | data->fan_off = r; |
86d47f12 JD |
385 | gl520_write_value(client, GL520_REG_FAN_OFF, |
386 | (gl520_read_value(client, GL520_REG_FAN_OFF) | |
387 | & ~0x0c) | (r << 2)); | |
9a61bf63 | 388 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
389 | return count; |
390 | } | |
391 | ||
86d47f12 JD |
392 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0); |
393 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); | |
394 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, | |
395 | get_fan_min, set_fan_min, 0); | |
396 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, | |
397 | get_fan_min, set_fan_min, 1); | |
398 | static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, | |
399 | get_fan_div, set_fan_div, 0); | |
400 | static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, | |
401 | get_fan_div, set_fan_div, 1); | |
402 | static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, | |
403 | get_fan_off, set_fan_off); | |
404 | ||
1da177e4 LT |
405 | #define TEMP_FROM_REG(val) (((val) - 130) * 1000) |
406 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255)) | |
407 | ||
86d47f12 JD |
408 | static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr, |
409 | char *buf) | |
1da177e4 | 410 | { |
86d47f12 JD |
411 | int n = to_sensor_dev_attr(attr)->index; |
412 | struct gl520_data *data = gl520_update_device(dev); | |
413 | ||
414 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); | |
1da177e4 LT |
415 | } |
416 | ||
86d47f12 JD |
417 | static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr, |
418 | char *buf) | |
1da177e4 | 419 | { |
86d47f12 JD |
420 | int n = to_sensor_dev_attr(attr)->index; |
421 | struct gl520_data *data = gl520_update_device(dev); | |
422 | ||
423 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); | |
1da177e4 LT |
424 | } |
425 | ||
86d47f12 JD |
426 | static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute |
427 | *attr, char *buf) | |
1da177e4 | 428 | { |
86d47f12 JD |
429 | int n = to_sensor_dev_attr(attr)->index; |
430 | struct gl520_data *data = gl520_update_device(dev); | |
431 | ||
432 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); | |
1da177e4 LT |
433 | } |
434 | ||
86d47f12 JD |
435 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
436 | const char *buf, size_t count) | |
1da177e4 | 437 | { |
86d47f12 JD |
438 | struct i2c_client *client = to_i2c_client(dev); |
439 | struct gl520_data *data = i2c_get_clientdata(client); | |
440 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
441 | long v = simple_strtol(buf, NULL, 10); |
442 | ||
9a61bf63 | 443 | mutex_lock(&data->update_lock); |
86d47f12 JD |
444 | data->temp_max[n] = TEMP_TO_REG(v); |
445 | gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); | |
9a61bf63 | 446 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
447 | return count; |
448 | } | |
449 | ||
86d47f12 JD |
450 | static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute |
451 | *attr, const char *buf, size_t count) | |
1da177e4 | 452 | { |
86d47f12 JD |
453 | struct i2c_client *client = to_i2c_client(dev); |
454 | struct gl520_data *data = i2c_get_clientdata(client); | |
455 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 LT |
456 | long v = simple_strtol(buf, NULL, 10); |
457 | ||
9a61bf63 | 458 | mutex_lock(&data->update_lock); |
86d47f12 JD |
459 | data->temp_max_hyst[n] = TEMP_TO_REG(v); |
460 | gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], | |
461 | data->temp_max_hyst[n]); | |
9a61bf63 | 462 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
463 | return count; |
464 | } | |
465 | ||
86d47f12 JD |
466 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0); |
467 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); | |
468 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, | |
469 | get_temp_max, set_temp_max, 0); | |
470 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, | |
471 | get_temp_max, set_temp_max, 1); | |
472 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
473 | get_temp_max_hyst, set_temp_max_hyst, 0); | |
474 | static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, | |
475 | get_temp_max_hyst, set_temp_max_hyst, 1); | |
476 | ||
477 | static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, | |
478 | char *buf) | |
1da177e4 | 479 | { |
86d47f12 | 480 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
481 | return sprintf(buf, "%d\n", data->alarms); |
482 | } | |
483 | ||
86d47f12 JD |
484 | static ssize_t get_beep_enable(struct device *dev, struct device_attribute |
485 | *attr, char *buf) | |
1da177e4 | 486 | { |
86d47f12 | 487 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
488 | return sprintf(buf, "%d\n", data->beep_enable); |
489 | } | |
490 | ||
86d47f12 JD |
491 | static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr, |
492 | char *buf) | |
1da177e4 | 493 | { |
86d47f12 | 494 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
495 | return sprintf(buf, "%d\n", data->beep_mask); |
496 | } | |
497 | ||
86d47f12 JD |
498 | static ssize_t set_beep_enable(struct device *dev, struct device_attribute |
499 | *attr, const char *buf, size_t count) | |
1da177e4 | 500 | { |
86d47f12 JD |
501 | struct i2c_client *client = to_i2c_client(dev); |
502 | struct gl520_data *data = i2c_get_clientdata(client); | |
1da177e4 LT |
503 | u8 r = simple_strtoul(buf, NULL, 10)?0:1; |
504 | ||
9a61bf63 | 505 | mutex_lock(&data->update_lock); |
1da177e4 | 506 | data->beep_enable = !r; |
86d47f12 JD |
507 | gl520_write_value(client, GL520_REG_BEEP_ENABLE, |
508 | (gl520_read_value(client, GL520_REG_BEEP_ENABLE) | |
509 | & ~0x04) | (r << 2)); | |
9a61bf63 | 510 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
511 | return count; |
512 | } | |
513 | ||
86d47f12 JD |
514 | static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr, |
515 | const char *buf, size_t count) | |
1da177e4 | 516 | { |
86d47f12 JD |
517 | struct i2c_client *client = to_i2c_client(dev); |
518 | struct gl520_data *data = i2c_get_clientdata(client); | |
1da177e4 | 519 | u8 r = simple_strtoul(buf, NULL, 10); |
f28dc2f7 | 520 | |
9a61bf63 | 521 | mutex_lock(&data->update_lock); |
1da177e4 LT |
522 | r &= data->alarm_mask; |
523 | data->beep_mask = r; | |
86d47f12 | 524 | gl520_write_value(client, GL520_REG_BEEP_MASK, r); |
9a61bf63 | 525 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
526 | return count; |
527 | } | |
528 | ||
86d47f12 JD |
529 | static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); |
530 | static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, | |
531 | get_beep_enable, set_beep_enable); | |
532 | static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, | |
533 | get_beep_mask, set_beep_mask); | |
534 | ||
87808be4 JD |
535 | static struct attribute *gl520_attributes[] = { |
536 | &dev_attr_cpu0_vid.attr, | |
537 | ||
86d47f12 JD |
538 | &sensor_dev_attr_in0_input.dev_attr.attr, |
539 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
540 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
541 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
542 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
543 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
544 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
545 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
546 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
547 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
548 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
549 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
550 | ||
551 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
552 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
553 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
87808be4 | 554 | &dev_attr_fan1_off.attr, |
86d47f12 JD |
555 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
556 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
557 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
87808be4 | 558 | |
86d47f12 JD |
559 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
560 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
561 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
87808be4 JD |
562 | |
563 | &dev_attr_alarms.attr, | |
564 | &dev_attr_beep_enable.attr, | |
565 | &dev_attr_beep_mask.attr, | |
566 | NULL | |
567 | }; | |
568 | ||
569 | static const struct attribute_group gl520_group = { | |
570 | .attrs = gl520_attributes, | |
571 | }; | |
572 | ||
573 | static struct attribute *gl520_attributes_opt[] = { | |
86d47f12 JD |
574 | &sensor_dev_attr_in4_input.dev_attr.attr, |
575 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
576 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
87808be4 | 577 | |
86d47f12 JD |
578 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
579 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
580 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
87808be4 JD |
581 | NULL |
582 | }; | |
583 | ||
584 | static const struct attribute_group gl520_group_opt = { | |
585 | .attrs = gl520_attributes_opt, | |
586 | }; | |
587 | ||
1da177e4 LT |
588 | |
589 | /* | |
590 | * Real code | |
591 | */ | |
592 | ||
593 | static int gl520_attach_adapter(struct i2c_adapter *adapter) | |
594 | { | |
595 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
596 | return 0; | |
2ed2dc3c | 597 | return i2c_probe(adapter, &addr_data, gl520_detect); |
1da177e4 LT |
598 | } |
599 | ||
600 | static int gl520_detect(struct i2c_adapter *adapter, int address, int kind) | |
601 | { | |
f28dc2f7 | 602 | struct i2c_client *client; |
1da177e4 LT |
603 | struct gl520_data *data; |
604 | int err = 0; | |
605 | ||
606 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
607 | I2C_FUNC_SMBUS_WORD_DATA)) | |
608 | goto exit; | |
609 | ||
610 | /* OK. For now, we presume we have a valid client. We now create the | |
611 | client structure, even though we cannot fill it completely yet. | |
612 | But it allows us to access gl520_{read,write}_value. */ | |
613 | ||
ba9c2e8d | 614 | if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) { |
1da177e4 LT |
615 | err = -ENOMEM; |
616 | goto exit; | |
617 | } | |
1da177e4 | 618 | |
f28dc2f7 JD |
619 | client = &data->client; |
620 | i2c_set_clientdata(client, data); | |
621 | client->addr = address; | |
622 | client->adapter = adapter; | |
623 | client->driver = &gl520_driver; | |
1da177e4 LT |
624 | |
625 | /* Determine the chip type. */ | |
626 | if (kind < 0) { | |
f28dc2f7 JD |
627 | if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || |
628 | ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || | |
629 | ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { | |
630 | dev_dbg(&client->dev, "Unknown chip type, skipping\n"); | |
1da177e4 LT |
631 | goto exit_free; |
632 | } | |
633 | } | |
634 | ||
635 | /* Fill in the remaining client fields */ | |
f28dc2f7 | 636 | strlcpy(client->name, "gl520sm", I2C_NAME_SIZE); |
9a61bf63 | 637 | mutex_init(&data->update_lock); |
1da177e4 LT |
638 | |
639 | /* Tell the I2C layer a new client has arrived */ | |
f28dc2f7 | 640 | if ((err = i2c_attach_client(client))) |
1da177e4 LT |
641 | goto exit_free; |
642 | ||
643 | /* Initialize the GL520SM chip */ | |
f28dc2f7 | 644 | gl520_init_client(client); |
1da177e4 LT |
645 | |
646 | /* Register sysfs hooks */ | |
f28dc2f7 | 647 | if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group))) |
943b0830 | 648 | goto exit_detach; |
1da177e4 | 649 | |
87808be4 | 650 | if (data->two_temps) { |
f28dc2f7 | 651 | if ((err = device_create_file(&client->dev, |
86d47f12 | 652 | &sensor_dev_attr_temp2_input.dev_attr)) |
f28dc2f7 | 653 | || (err = device_create_file(&client->dev, |
86d47f12 | 654 | &sensor_dev_attr_temp2_max.dev_attr)) |
f28dc2f7 | 655 | || (err = device_create_file(&client->dev, |
86d47f12 | 656 | &sensor_dev_attr_temp2_max_hyst.dev_attr))) |
87808be4 JD |
657 | goto exit_remove_files; |
658 | } else { | |
f28dc2f7 | 659 | if ((err = device_create_file(&client->dev, |
86d47f12 | 660 | &sensor_dev_attr_in4_input.dev_attr)) |
f28dc2f7 | 661 | || (err = device_create_file(&client->dev, |
86d47f12 | 662 | &sensor_dev_attr_in4_min.dev_attr)) |
f28dc2f7 | 663 | || (err = device_create_file(&client->dev, |
86d47f12 | 664 | &sensor_dev_attr_in4_max.dev_attr))) |
87808be4 JD |
665 | goto exit_remove_files; |
666 | } | |
1da177e4 | 667 | |
1da177e4 | 668 | |
f28dc2f7 | 669 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
670 | if (IS_ERR(data->hwmon_dev)) { |
671 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 JD |
672 | goto exit_remove_files; |
673 | } | |
1da177e4 LT |
674 | |
675 | return 0; | |
676 | ||
87808be4 | 677 | exit_remove_files: |
f28dc2f7 JD |
678 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
679 | sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); | |
943b0830 | 680 | exit_detach: |
f28dc2f7 | 681 | i2c_detach_client(client); |
1da177e4 LT |
682 | exit_free: |
683 | kfree(data); | |
684 | exit: | |
685 | return err; | |
686 | } | |
687 | ||
688 | ||
689 | /* Called when we have found a new GL520SM. */ | |
690 | static void gl520_init_client(struct i2c_client *client) | |
691 | { | |
692 | struct gl520_data *data = i2c_get_clientdata(client); | |
693 | u8 oldconf, conf; | |
694 | ||
695 | conf = oldconf = gl520_read_value(client, GL520_REG_CONF); | |
696 | ||
697 | data->alarm_mask = 0xff; | |
303760b4 | 698 | data->vrm = vid_which_vrm(); |
1da177e4 LT |
699 | |
700 | if (extra_sensor_type == 1) | |
701 | conf &= ~0x10; | |
702 | else if (extra_sensor_type == 2) | |
703 | conf |= 0x10; | |
704 | data->two_temps = !(conf & 0x10); | |
705 | ||
706 | /* If IRQ# is disabled, we can safely force comparator mode */ | |
707 | if (!(conf & 0x20)) | |
708 | conf &= 0xf7; | |
709 | ||
710 | /* Enable monitoring if needed */ | |
711 | conf |= 0x40; | |
712 | ||
713 | if (conf != oldconf) | |
714 | gl520_write_value(client, GL520_REG_CONF, conf); | |
715 | ||
716 | gl520_update_device(&(client->dev)); | |
717 | ||
718 | if (data->fan_min[0] == 0) | |
719 | data->alarm_mask &= ~0x20; | |
720 | if (data->fan_min[1] == 0) | |
721 | data->alarm_mask &= ~0x40; | |
722 | ||
723 | data->beep_mask &= data->alarm_mask; | |
724 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
725 | } | |
726 | ||
727 | static int gl520_detach_client(struct i2c_client *client) | |
728 | { | |
943b0830 | 729 | struct gl520_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
730 | int err; |
731 | ||
1beeffe4 | 732 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 JD |
733 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
734 | sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); | |
943b0830 | 735 | |
7bef5594 | 736 | if ((err = i2c_detach_client(client))) |
1da177e4 | 737 | return err; |
1da177e4 | 738 | |
943b0830 | 739 | kfree(data); |
1da177e4 LT |
740 | return 0; |
741 | } | |
742 | ||
743 | ||
f28dc2f7 | 744 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
1da177e4 LT |
745 | GL520 uses a high-byte first convention */ |
746 | static int gl520_read_value(struct i2c_client *client, u8 reg) | |
747 | { | |
748 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
749 | return swab16(i2c_smbus_read_word_data(client, reg)); | |
750 | else | |
751 | return i2c_smbus_read_byte_data(client, reg); | |
752 | } | |
753 | ||
754 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) | |
755 | { | |
756 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
757 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | |
758 | else | |
759 | return i2c_smbus_write_byte_data(client, reg, value); | |
760 | } | |
761 | ||
762 | ||
763 | static struct gl520_data *gl520_update_device(struct device *dev) | |
764 | { | |
765 | struct i2c_client *client = to_i2c_client(dev); | |
766 | struct gl520_data *data = i2c_get_clientdata(client); | |
8b4b0ab4 | 767 | int val, i; |
1da177e4 | 768 | |
9a61bf63 | 769 | mutex_lock(&data->update_lock); |
1da177e4 | 770 | |
0cacdf29 | 771 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
1da177e4 LT |
772 | |
773 | dev_dbg(&client->dev, "Starting gl520sm update\n"); | |
774 | ||
775 | data->alarms = gl520_read_value(client, GL520_REG_ALARMS); | |
776 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
777 | data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f; | |
778 | ||
8b4b0ab4 JD |
779 | for (i = 0; i < 4; i++) { |
780 | data->in_input[i] = gl520_read_value(client, | |
781 | GL520_REG_IN_INPUT[i]); | |
782 | val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); | |
783 | data->in_min[i] = val & 0xff; | |
784 | data->in_max[i] = (val >> 8) & 0xff; | |
785 | } | |
1da177e4 LT |
786 | |
787 | val = gl520_read_value(client, GL520_REG_FAN_INPUT); | |
788 | data->fan_input[0] = (val >> 8) & 0xff; | |
789 | data->fan_input[1] = val & 0xff; | |
790 | ||
791 | val = gl520_read_value(client, GL520_REG_FAN_MIN); | |
792 | data->fan_min[0] = (val >> 8) & 0xff; | |
793 | data->fan_min[1] = val & 0xff; | |
794 | ||
8b4b0ab4 JD |
795 | data->temp_input[0] = gl520_read_value(client, |
796 | GL520_REG_TEMP_INPUT[0]); | |
797 | data->temp_max[0] = gl520_read_value(client, | |
798 | GL520_REG_TEMP_MAX[0]); | |
799 | data->temp_max_hyst[0] = gl520_read_value(client, | |
800 | GL520_REG_TEMP_MAX_HYST[0]); | |
1da177e4 LT |
801 | |
802 | val = gl520_read_value(client, GL520_REG_FAN_DIV); | |
803 | data->fan_div[0] = (val >> 6) & 0x03; | |
804 | data->fan_div[1] = (val >> 4) & 0x03; | |
805 | data->fan_off = (val >> 2) & 0x01; | |
806 | ||
807 | data->alarms &= data->alarm_mask; | |
808 | ||
809 | val = gl520_read_value(client, GL520_REG_CONF); | |
810 | data->beep_enable = !((val >> 2) & 1); | |
811 | ||
1da177e4 LT |
812 | /* Temp1 and Vin4 are the same input */ |
813 | if (data->two_temps) { | |
8b4b0ab4 JD |
814 | data->temp_input[1] = gl520_read_value(client, |
815 | GL520_REG_TEMP_INPUT[1]); | |
816 | data->temp_max[1] = gl520_read_value(client, | |
817 | GL520_REG_TEMP_MAX[1]); | |
818 | data->temp_max_hyst[1] = gl520_read_value(client, | |
819 | GL520_REG_TEMP_MAX_HYST[1]); | |
1da177e4 | 820 | } else { |
8b4b0ab4 JD |
821 | data->in_input[4] = gl520_read_value(client, |
822 | GL520_REG_IN_INPUT[4]); | |
823 | data->in_min[4] = gl520_read_value(client, | |
824 | GL520_REG_IN_MIN[4]); | |
825 | data->in_max[4] = gl520_read_value(client, | |
826 | GL520_REG_IN_MAX[4]); | |
1da177e4 LT |
827 | } |
828 | ||
829 | data->last_updated = jiffies; | |
830 | data->valid = 1; | |
831 | } | |
832 | ||
9a61bf63 | 833 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
834 | |
835 | return data; | |
836 | } | |
837 | ||
838 | ||
839 | static int __init sensors_gl520sm_init(void) | |
840 | { | |
841 | return i2c_add_driver(&gl520_driver); | |
842 | } | |
843 | ||
844 | static void __exit sensors_gl520sm_exit(void) | |
845 | { | |
846 | i2c_del_driver(&gl520_driver); | |
847 | } | |
848 | ||
849 | ||
850 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
96de0e25 | 851 | "Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
1da177e4 LT |
852 | "Maarten Deprez <maartendeprez@users.sourceforge.net>"); |
853 | MODULE_DESCRIPTION("GL520SM driver"); | |
854 | MODULE_LICENSE("GPL"); | |
855 | ||
856 | module_init(sensors_gl520sm_init); | |
857 | module_exit(sensors_gl520sm_exit); |