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> |
303760b4 | 30 | #include <linux/hwmon-vid.h> |
943b0830 | 31 | #include <linux/err.h> |
9a61bf63 | 32 | #include <linux/mutex.h> |
87808be4 | 33 | #include <linux/sysfs.h> |
1da177e4 LT |
34 | |
35 | /* Type of the extra sensor */ | |
36 | static unsigned short extra_sensor_type; | |
37 | module_param(extra_sensor_type, ushort, 0); | |
38 | MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); | |
39 | ||
40 | /* Addresses to scan */ | |
41 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; | |
1da177e4 LT |
42 | |
43 | /* Insmod parameters */ | |
f4b50261 | 44 | I2C_CLIENT_INSMOD_1(gl520sm); |
1da177e4 | 45 | |
f28dc2f7 | 46 | /* Many GL520 constants specified below |
1da177e4 | 47 | One of the inputs can be configured as either temp or voltage. |
f28dc2f7 | 48 | That's why _TEMP2 and _IN4 access the same register |
1da177e4 LT |
49 | */ |
50 | ||
51 | /* The GL520 registers */ | |
52 | #define GL520_REG_CHIP_ID 0x00 | |
53 | #define GL520_REG_REVISION 0x01 | |
54 | #define GL520_REG_CONF 0x03 | |
55 | #define GL520_REG_MASK 0x11 | |
56 | ||
57 | #define GL520_REG_VID_INPUT 0x02 | |
58 | ||
8b4b0ab4 JD |
59 | static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; |
60 | static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; | |
61 | static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; | |
62 | static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; | |
63 | ||
64 | static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; | |
65 | static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; | |
66 | static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; | |
1da177e4 LT |
67 | |
68 | #define GL520_REG_FAN_INPUT 0x07 | |
69 | #define GL520_REG_FAN_MIN 0x08 | |
70 | #define GL520_REG_FAN_DIV 0x0f | |
71 | #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV | |
72 | ||
73 | #define GL520_REG_ALARMS 0x12 | |
74 | #define GL520_REG_BEEP_MASK 0x10 | |
75 | #define GL520_REG_BEEP_ENABLE GL520_REG_CONF | |
76 | ||
77 | /* | |
78 | * Function declarations | |
79 | */ | |
80 | ||
81 | static int gl520_attach_adapter(struct i2c_adapter *adapter); | |
82 | static int gl520_detect(struct i2c_adapter *adapter, int address, int kind); | |
83 | static void gl520_init_client(struct i2c_client *client); | |
84 | static int gl520_detach_client(struct i2c_client *client); | |
85 | static int gl520_read_value(struct i2c_client *client, u8 reg); | |
86 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); | |
87 | static struct gl520_data *gl520_update_device(struct device *dev); | |
88 | ||
89 | /* Driver data */ | |
90 | static struct i2c_driver gl520_driver = { | |
cdaf7934 | 91 | .driver = { |
cdaf7934 LR |
92 | .name = "gl520sm", |
93 | }, | |
1da177e4 LT |
94 | .attach_adapter = gl520_attach_adapter, |
95 | .detach_client = gl520_detach_client, | |
96 | }; | |
97 | ||
98 | /* Client data */ | |
99 | struct gl520_data { | |
100 | struct i2c_client client; | |
1beeffe4 | 101 | struct device *hwmon_dev; |
9a61bf63 | 102 | struct mutex update_lock; |
1da177e4 LT |
103 | char valid; /* zero until the following fields are valid */ |
104 | unsigned long last_updated; /* in jiffies */ | |
105 | ||
106 | u8 vid; | |
107 | u8 vrm; | |
108 | u8 in_input[5]; /* [0] = VVD */ | |
109 | u8 in_min[5]; /* [0] = VDD */ | |
110 | u8 in_max[5]; /* [0] = VDD */ | |
111 | u8 fan_input[2]; | |
112 | u8 fan_min[2]; | |
113 | u8 fan_div[2]; | |
114 | u8 fan_off; | |
115 | u8 temp_input[2]; | |
116 | u8 temp_max[2]; | |
117 | u8 temp_max_hyst[2]; | |
118 | u8 alarms; | |
119 | u8 beep_enable; | |
120 | u8 beep_mask; | |
121 | u8 alarm_mask; | |
122 | u8 two_temps; | |
123 | }; | |
124 | ||
125 | /* | |
126 | * Sysfs stuff | |
127 | */ | |
128 | ||
129 | #define sysfs_r(type, n, item, reg) \ | |
130 | static ssize_t get_##type##item (struct gl520_data *, char *, int); \ | |
30f74292 YI |
131 | static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \ |
132 | static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
133 | { \ |
134 | struct gl520_data *data = gl520_update_device(dev); \ | |
135 | return get_##type##item(data, buf, (n)); \ | |
136 | } | |
137 | ||
138 | #define sysfs_w(type, n, item, reg) \ | |
139 | static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \ | |
30f74292 YI |
140 | static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \ |
141 | static ssize_t set_##type##n##item (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ | |
1da177e4 LT |
142 | { \ |
143 | struct i2c_client *client = to_i2c_client(dev); \ | |
144 | struct gl520_data *data = i2c_get_clientdata(client); \ | |
145 | return set_##type##item(client, data, buf, count, (n), reg); \ | |
146 | } | |
147 | ||
148 | #define sysfs_rw_n(type, n, item, reg) \ | |
149 | sysfs_r(type, n, item, reg) \ | |
150 | sysfs_w(type, n, item, reg) \ | |
151 | static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item); | |
152 | ||
153 | #define sysfs_ro_n(type, n, item, reg) \ | |
154 | sysfs_r(type, n, item, reg) \ | |
155 | static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL); | |
156 | ||
157 | #define sysfs_rw(type, item, reg) \ | |
158 | sysfs_r(type, 0, item, reg) \ | |
159 | sysfs_w(type, 0, item, reg) \ | |
160 | static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item); | |
161 | ||
162 | #define sysfs_ro(type, item, reg) \ | |
163 | sysfs_r(type, 0, item, reg) \ | |
164 | static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL); | |
165 | ||
166 | ||
167 | #define sysfs_vid(n) \ | |
168 | sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT) | |
169 | ||
1da177e4 | 170 | #define sysfs_in(n) \ |
8b4b0ab4 JD |
171 | sysfs_ro_n(in, n, _input, GL520_REG_IN_INPUT[n]) \ |
172 | sysfs_rw_n(in, n, _min, GL520_REG_IN_MIN[n]) \ | |
173 | sysfs_rw_n(in, n, _max, GL520_REG_IN_MAX[n]) | |
1da177e4 | 174 | |
1da177e4 LT |
175 | #define sysfs_fan(n) \ |
176 | sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \ | |
177 | sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \ | |
178 | sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV) | |
179 | ||
1da177e4 | 180 | #define sysfs_fan_off(n) \ |
f28dc2f7 | 181 | sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) |
1da177e4 | 182 | |
1da177e4 | 183 | #define sysfs_temp(n) \ |
8b4b0ab4 JD |
184 | sysfs_ro_n(temp, n, _input, GL520_REG_TEMP_INPUT[(n) - 1]) \ |
185 | sysfs_rw_n(temp, n, _max, GL520_REG_TEMP_MAX[(n) - 1]) \ | |
186 | sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP_MAX_HYST[(n) - 1]) | |
1da177e4 | 187 | |
1da177e4 LT |
188 | #define sysfs_alarms() \ |
189 | sysfs_ro(alarms, , GL520_REG_ALARMS) \ | |
190 | sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \ | |
191 | sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK) | |
192 | ||
1da177e4 LT |
193 | |
194 | sysfs_vid(0) | |
195 | ||
196 | sysfs_in(0) | |
197 | sysfs_in(1) | |
198 | sysfs_in(2) | |
199 | sysfs_in(3) | |
200 | sysfs_in(4) | |
201 | ||
202 | sysfs_fan(1) | |
203 | sysfs_fan(2) | |
204 | sysfs_fan_off(1) | |
205 | ||
206 | sysfs_temp(1) | |
207 | sysfs_temp(2) | |
208 | ||
209 | sysfs_alarms() | |
210 | ||
211 | ||
212 | static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n) | |
213 | { | |
214 | return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); | |
215 | } | |
216 | ||
217 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | |
218 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | |
219 | ||
220 | #define IN_FROM_REG(val) ((val)*19) | |
221 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | |
222 | ||
223 | static ssize_t get_in_input(struct gl520_data *data, char *buf, int n) | |
224 | { | |
225 | u8 r = data->in_input[n]; | |
226 | ||
227 | if (n == 0) | |
228 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
229 | else | |
230 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
231 | } | |
232 | ||
233 | static ssize_t get_in_min(struct gl520_data *data, char *buf, int n) | |
234 | { | |
235 | u8 r = data->in_min[n]; | |
236 | ||
237 | if (n == 0) | |
238 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
239 | else | |
240 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
241 | } | |
242 | ||
243 | static ssize_t get_in_max(struct gl520_data *data, char *buf, int n) | |
244 | { | |
245 | u8 r = data->in_max[n]; | |
246 | ||
247 | if (n == 0) | |
248 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
249 | else | |
250 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
251 | } | |
252 | ||
253 | static ssize_t set_in_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
254 | { | |
255 | long v = simple_strtol(buf, NULL, 10); | |
256 | u8 r; | |
257 | ||
9a61bf63 | 258 | mutex_lock(&data->update_lock); |
1da177e4 LT |
259 | |
260 | if (n == 0) | |
261 | r = VDD_TO_REG(v); | |
262 | else | |
263 | r = IN_TO_REG(v); | |
264 | ||
265 | data->in_min[n] = r; | |
266 | ||
267 | if (n < 4) | |
268 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r); | |
269 | else | |
270 | gl520_write_value(client, reg, r); | |
271 | ||
9a61bf63 | 272 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
273 | return count; |
274 | } | |
275 | ||
276 | static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
277 | { | |
278 | long v = simple_strtol(buf, NULL, 10); | |
279 | u8 r; | |
280 | ||
281 | if (n == 0) | |
282 | r = VDD_TO_REG(v); | |
283 | else | |
284 | r = IN_TO_REG(v); | |
285 | ||
9a61bf63 | 286 | mutex_lock(&data->update_lock); |
1da177e4 LT |
287 | |
288 | data->in_max[n] = r; | |
289 | ||
290 | if (n < 4) | |
291 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); | |
292 | else | |
293 | gl520_write_value(client, reg, r); | |
294 | ||
9a61bf63 | 295 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
296 | return count; |
297 | } | |
298 | ||
299 | #define DIV_FROM_REG(val) (1 << (val)) | |
300 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div)))) | |
301 | #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)); | |
302 | ||
303 | static ssize_t get_fan_input(struct gl520_data *data, char *buf, int n) | |
304 | { | |
305 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1])); | |
306 | } | |
307 | ||
308 | static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n) | |
309 | { | |
310 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1])); | |
311 | } | |
312 | ||
313 | static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n) | |
314 | { | |
315 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1])); | |
316 | } | |
317 | ||
318 | static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n) | |
319 | { | |
320 | return sprintf(buf, "%d\n", data->fan_off); | |
321 | } | |
322 | ||
323 | static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
324 | { | |
325 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
326 | u8 r; | |
327 | ||
9a61bf63 | 328 | mutex_lock(&data->update_lock); |
1da177e4 LT |
329 | r = FAN_TO_REG(v, data->fan_div[n - 1]); |
330 | data->fan_min[n - 1] = r; | |
331 | ||
332 | if (n == 1) | |
333 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); | |
334 | else | |
335 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r); | |
336 | ||
337 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
338 | if (data->fan_min[n - 1] == 0) | |
339 | data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40; | |
340 | else | |
341 | data->alarm_mask |= (n == 1) ? 0x20 : 0x40; | |
342 | data->beep_mask &= data->alarm_mask; | |
343 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
344 | ||
9a61bf63 | 345 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
346 | return count; |
347 | } | |
348 | ||
349 | static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
350 | { | |
351 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
352 | u8 r; | |
353 | ||
354 | switch (v) { | |
355 | case 1: r = 0; break; | |
356 | case 2: r = 1; break; | |
357 | case 4: r = 2; break; | |
358 | case 8: r = 3; break; | |
359 | default: | |
360 | dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
9a61bf63 | 364 | mutex_lock(&data->update_lock); |
1da177e4 LT |
365 | data->fan_div[n - 1] = r; |
366 | ||
367 | if (n == 1) | |
368 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6)); | |
369 | else | |
370 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4)); | |
371 | ||
9a61bf63 | 372 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
373 | return count; |
374 | } | |
375 | ||
376 | static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
377 | { | |
378 | u8 r = simple_strtoul(buf, NULL, 10)?1:0; | |
379 | ||
9a61bf63 | 380 | mutex_lock(&data->update_lock); |
1da177e4 LT |
381 | data->fan_off = r; |
382 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2)); | |
9a61bf63 | 383 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
384 | return count; |
385 | } | |
386 | ||
387 | #define TEMP_FROM_REG(val) (((val) - 130) * 1000) | |
388 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255)) | |
389 | ||
390 | static ssize_t get_temp_input(struct gl520_data *data, char *buf, int n) | |
391 | { | |
392 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n - 1])); | |
393 | } | |
394 | ||
395 | static ssize_t get_temp_max(struct gl520_data *data, char *buf, int n) | |
396 | { | |
397 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n - 1])); | |
398 | } | |
399 | ||
400 | static ssize_t get_temp_max_hyst(struct gl520_data *data, char *buf, int n) | |
401 | { | |
402 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n - 1])); | |
403 | } | |
404 | ||
405 | static ssize_t set_temp_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
406 | { | |
407 | long v = simple_strtol(buf, NULL, 10); | |
408 | ||
9a61bf63 | 409 | mutex_lock(&data->update_lock); |
53b3531b | 410 | data->temp_max[n - 1] = TEMP_TO_REG(v); |
1da177e4 | 411 | gl520_write_value(client, reg, data->temp_max[n - 1]); |
9a61bf63 | 412 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
413 | return count; |
414 | } | |
415 | ||
416 | static ssize_t set_temp_max_hyst(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
417 | { | |
418 | long v = simple_strtol(buf, NULL, 10); | |
419 | ||
9a61bf63 | 420 | mutex_lock(&data->update_lock); |
1da177e4 LT |
421 | data->temp_max_hyst[n - 1] = TEMP_TO_REG(v); |
422 | gl520_write_value(client, reg, data->temp_max_hyst[n - 1]); | |
9a61bf63 | 423 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
424 | return count; |
425 | } | |
426 | ||
427 | static ssize_t get_alarms(struct gl520_data *data, char *buf, int n) | |
428 | { | |
429 | return sprintf(buf, "%d\n", data->alarms); | |
430 | } | |
431 | ||
432 | static ssize_t get_beep_enable(struct gl520_data *data, char *buf, int n) | |
433 | { | |
434 | return sprintf(buf, "%d\n", data->beep_enable); | |
435 | } | |
436 | ||
437 | static ssize_t get_beep_mask(struct gl520_data *data, char *buf, int n) | |
438 | { | |
439 | return sprintf(buf, "%d\n", data->beep_mask); | |
440 | } | |
441 | ||
442 | static ssize_t set_beep_enable(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
443 | { | |
444 | u8 r = simple_strtoul(buf, NULL, 10)?0:1; | |
445 | ||
9a61bf63 | 446 | mutex_lock(&data->update_lock); |
1da177e4 LT |
447 | data->beep_enable = !r; |
448 | gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x04) | (r << 2)); | |
9a61bf63 | 449 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
450 | return count; |
451 | } | |
452 | ||
453 | static ssize_t set_beep_mask(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) | |
454 | { | |
455 | u8 r = simple_strtoul(buf, NULL, 10); | |
f28dc2f7 | 456 | |
9a61bf63 | 457 | mutex_lock(&data->update_lock); |
1da177e4 LT |
458 | r &= data->alarm_mask; |
459 | data->beep_mask = r; | |
460 | gl520_write_value(client, reg, r); | |
9a61bf63 | 461 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
462 | return count; |
463 | } | |
464 | ||
87808be4 JD |
465 | static struct attribute *gl520_attributes[] = { |
466 | &dev_attr_cpu0_vid.attr, | |
467 | ||
468 | &dev_attr_in0_input.attr, | |
469 | &dev_attr_in0_min.attr, | |
470 | &dev_attr_in0_max.attr, | |
471 | &dev_attr_in1_input.attr, | |
472 | &dev_attr_in1_min.attr, | |
473 | &dev_attr_in1_max.attr, | |
474 | &dev_attr_in2_input.attr, | |
475 | &dev_attr_in2_min.attr, | |
476 | &dev_attr_in2_max.attr, | |
477 | &dev_attr_in3_input.attr, | |
478 | &dev_attr_in3_min.attr, | |
479 | &dev_attr_in3_max.attr, | |
480 | ||
481 | &dev_attr_fan1_input.attr, | |
482 | &dev_attr_fan1_min.attr, | |
483 | &dev_attr_fan1_div.attr, | |
484 | &dev_attr_fan1_off.attr, | |
485 | &dev_attr_fan2_input.attr, | |
486 | &dev_attr_fan2_min.attr, | |
487 | &dev_attr_fan2_div.attr, | |
488 | ||
489 | &dev_attr_temp1_input.attr, | |
490 | &dev_attr_temp1_max.attr, | |
491 | &dev_attr_temp1_max_hyst.attr, | |
492 | ||
493 | &dev_attr_alarms.attr, | |
494 | &dev_attr_beep_enable.attr, | |
495 | &dev_attr_beep_mask.attr, | |
496 | NULL | |
497 | }; | |
498 | ||
499 | static const struct attribute_group gl520_group = { | |
500 | .attrs = gl520_attributes, | |
501 | }; | |
502 | ||
503 | static struct attribute *gl520_attributes_opt[] = { | |
504 | &dev_attr_in4_input.attr, | |
505 | &dev_attr_in4_min.attr, | |
506 | &dev_attr_in4_max.attr, | |
507 | ||
508 | &dev_attr_temp2_input.attr, | |
509 | &dev_attr_temp2_max.attr, | |
510 | &dev_attr_temp2_max_hyst.attr, | |
511 | NULL | |
512 | }; | |
513 | ||
514 | static const struct attribute_group gl520_group_opt = { | |
515 | .attrs = gl520_attributes_opt, | |
516 | }; | |
517 | ||
1da177e4 LT |
518 | |
519 | /* | |
520 | * Real code | |
521 | */ | |
522 | ||
523 | static int gl520_attach_adapter(struct i2c_adapter *adapter) | |
524 | { | |
525 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
526 | return 0; | |
2ed2dc3c | 527 | return i2c_probe(adapter, &addr_data, gl520_detect); |
1da177e4 LT |
528 | } |
529 | ||
530 | static int gl520_detect(struct i2c_adapter *adapter, int address, int kind) | |
531 | { | |
f28dc2f7 | 532 | struct i2c_client *client; |
1da177e4 LT |
533 | struct gl520_data *data; |
534 | int err = 0; | |
535 | ||
536 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
537 | I2C_FUNC_SMBUS_WORD_DATA)) | |
538 | goto exit; | |
539 | ||
540 | /* OK. For now, we presume we have a valid client. We now create the | |
541 | client structure, even though we cannot fill it completely yet. | |
542 | But it allows us to access gl520_{read,write}_value. */ | |
543 | ||
ba9c2e8d | 544 | if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) { |
1da177e4 LT |
545 | err = -ENOMEM; |
546 | goto exit; | |
547 | } | |
1da177e4 | 548 | |
f28dc2f7 JD |
549 | client = &data->client; |
550 | i2c_set_clientdata(client, data); | |
551 | client->addr = address; | |
552 | client->adapter = adapter; | |
553 | client->driver = &gl520_driver; | |
1da177e4 LT |
554 | |
555 | /* Determine the chip type. */ | |
556 | if (kind < 0) { | |
f28dc2f7 JD |
557 | if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || |
558 | ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || | |
559 | ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { | |
560 | dev_dbg(&client->dev, "Unknown chip type, skipping\n"); | |
1da177e4 LT |
561 | goto exit_free; |
562 | } | |
563 | } | |
564 | ||
565 | /* Fill in the remaining client fields */ | |
f28dc2f7 | 566 | strlcpy(client->name, "gl520sm", I2C_NAME_SIZE); |
9a61bf63 | 567 | mutex_init(&data->update_lock); |
1da177e4 LT |
568 | |
569 | /* Tell the I2C layer a new client has arrived */ | |
f28dc2f7 | 570 | if ((err = i2c_attach_client(client))) |
1da177e4 LT |
571 | goto exit_free; |
572 | ||
573 | /* Initialize the GL520SM chip */ | |
f28dc2f7 | 574 | gl520_init_client(client); |
1da177e4 LT |
575 | |
576 | /* Register sysfs hooks */ | |
f28dc2f7 | 577 | if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group))) |
943b0830 | 578 | goto exit_detach; |
1da177e4 | 579 | |
87808be4 | 580 | if (data->two_temps) { |
f28dc2f7 | 581 | if ((err = device_create_file(&client->dev, |
87808be4 | 582 | &dev_attr_temp2_input)) |
f28dc2f7 | 583 | || (err = device_create_file(&client->dev, |
87808be4 | 584 | &dev_attr_temp2_max)) |
f28dc2f7 | 585 | || (err = device_create_file(&client->dev, |
87808be4 JD |
586 | &dev_attr_temp2_max_hyst))) |
587 | goto exit_remove_files; | |
588 | } else { | |
f28dc2f7 | 589 | if ((err = device_create_file(&client->dev, |
87808be4 | 590 | &dev_attr_in4_input)) |
f28dc2f7 | 591 | || (err = device_create_file(&client->dev, |
87808be4 | 592 | &dev_attr_in4_min)) |
f28dc2f7 | 593 | || (err = device_create_file(&client->dev, |
87808be4 JD |
594 | &dev_attr_in4_max))) |
595 | goto exit_remove_files; | |
596 | } | |
1da177e4 | 597 | |
1da177e4 | 598 | |
f28dc2f7 | 599 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
600 | if (IS_ERR(data->hwmon_dev)) { |
601 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 JD |
602 | goto exit_remove_files; |
603 | } | |
1da177e4 LT |
604 | |
605 | return 0; | |
606 | ||
87808be4 | 607 | exit_remove_files: |
f28dc2f7 JD |
608 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
609 | sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); | |
943b0830 | 610 | exit_detach: |
f28dc2f7 | 611 | i2c_detach_client(client); |
1da177e4 LT |
612 | exit_free: |
613 | kfree(data); | |
614 | exit: | |
615 | return err; | |
616 | } | |
617 | ||
618 | ||
619 | /* Called when we have found a new GL520SM. */ | |
620 | static void gl520_init_client(struct i2c_client *client) | |
621 | { | |
622 | struct gl520_data *data = i2c_get_clientdata(client); | |
623 | u8 oldconf, conf; | |
624 | ||
625 | conf = oldconf = gl520_read_value(client, GL520_REG_CONF); | |
626 | ||
627 | data->alarm_mask = 0xff; | |
303760b4 | 628 | data->vrm = vid_which_vrm(); |
1da177e4 LT |
629 | |
630 | if (extra_sensor_type == 1) | |
631 | conf &= ~0x10; | |
632 | else if (extra_sensor_type == 2) | |
633 | conf |= 0x10; | |
634 | data->two_temps = !(conf & 0x10); | |
635 | ||
636 | /* If IRQ# is disabled, we can safely force comparator mode */ | |
637 | if (!(conf & 0x20)) | |
638 | conf &= 0xf7; | |
639 | ||
640 | /* Enable monitoring if needed */ | |
641 | conf |= 0x40; | |
642 | ||
643 | if (conf != oldconf) | |
644 | gl520_write_value(client, GL520_REG_CONF, conf); | |
645 | ||
646 | gl520_update_device(&(client->dev)); | |
647 | ||
648 | if (data->fan_min[0] == 0) | |
649 | data->alarm_mask &= ~0x20; | |
650 | if (data->fan_min[1] == 0) | |
651 | data->alarm_mask &= ~0x40; | |
652 | ||
653 | data->beep_mask &= data->alarm_mask; | |
654 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
655 | } | |
656 | ||
657 | static int gl520_detach_client(struct i2c_client *client) | |
658 | { | |
943b0830 | 659 | struct gl520_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
660 | int err; |
661 | ||
1beeffe4 | 662 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 JD |
663 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
664 | sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); | |
943b0830 | 665 | |
7bef5594 | 666 | if ((err = i2c_detach_client(client))) |
1da177e4 | 667 | return err; |
1da177e4 | 668 | |
943b0830 | 669 | kfree(data); |
1da177e4 LT |
670 | return 0; |
671 | } | |
672 | ||
673 | ||
f28dc2f7 | 674 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
1da177e4 LT |
675 | GL520 uses a high-byte first convention */ |
676 | static int gl520_read_value(struct i2c_client *client, u8 reg) | |
677 | { | |
678 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
679 | return swab16(i2c_smbus_read_word_data(client, reg)); | |
680 | else | |
681 | return i2c_smbus_read_byte_data(client, reg); | |
682 | } | |
683 | ||
684 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) | |
685 | { | |
686 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
687 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | |
688 | else | |
689 | return i2c_smbus_write_byte_data(client, reg, value); | |
690 | } | |
691 | ||
692 | ||
693 | static struct gl520_data *gl520_update_device(struct device *dev) | |
694 | { | |
695 | struct i2c_client *client = to_i2c_client(dev); | |
696 | struct gl520_data *data = i2c_get_clientdata(client); | |
8b4b0ab4 | 697 | int val, i; |
1da177e4 | 698 | |
9a61bf63 | 699 | mutex_lock(&data->update_lock); |
1da177e4 | 700 | |
0cacdf29 | 701 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
1da177e4 LT |
702 | |
703 | dev_dbg(&client->dev, "Starting gl520sm update\n"); | |
704 | ||
705 | data->alarms = gl520_read_value(client, GL520_REG_ALARMS); | |
706 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
707 | data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f; | |
708 | ||
8b4b0ab4 JD |
709 | for (i = 0; i < 4; i++) { |
710 | data->in_input[i] = gl520_read_value(client, | |
711 | GL520_REG_IN_INPUT[i]); | |
712 | val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); | |
713 | data->in_min[i] = val & 0xff; | |
714 | data->in_max[i] = (val >> 8) & 0xff; | |
715 | } | |
1da177e4 LT |
716 | |
717 | val = gl520_read_value(client, GL520_REG_FAN_INPUT); | |
718 | data->fan_input[0] = (val >> 8) & 0xff; | |
719 | data->fan_input[1] = val & 0xff; | |
720 | ||
721 | val = gl520_read_value(client, GL520_REG_FAN_MIN); | |
722 | data->fan_min[0] = (val >> 8) & 0xff; | |
723 | data->fan_min[1] = val & 0xff; | |
724 | ||
8b4b0ab4 JD |
725 | data->temp_input[0] = gl520_read_value(client, |
726 | GL520_REG_TEMP_INPUT[0]); | |
727 | data->temp_max[0] = gl520_read_value(client, | |
728 | GL520_REG_TEMP_MAX[0]); | |
729 | data->temp_max_hyst[0] = gl520_read_value(client, | |
730 | GL520_REG_TEMP_MAX_HYST[0]); | |
1da177e4 LT |
731 | |
732 | val = gl520_read_value(client, GL520_REG_FAN_DIV); | |
733 | data->fan_div[0] = (val >> 6) & 0x03; | |
734 | data->fan_div[1] = (val >> 4) & 0x03; | |
735 | data->fan_off = (val >> 2) & 0x01; | |
736 | ||
737 | data->alarms &= data->alarm_mask; | |
738 | ||
739 | val = gl520_read_value(client, GL520_REG_CONF); | |
740 | data->beep_enable = !((val >> 2) & 1); | |
741 | ||
1da177e4 LT |
742 | /* Temp1 and Vin4 are the same input */ |
743 | if (data->two_temps) { | |
8b4b0ab4 JD |
744 | data->temp_input[1] = gl520_read_value(client, |
745 | GL520_REG_TEMP_INPUT[1]); | |
746 | data->temp_max[1] = gl520_read_value(client, | |
747 | GL520_REG_TEMP_MAX[1]); | |
748 | data->temp_max_hyst[1] = gl520_read_value(client, | |
749 | GL520_REG_TEMP_MAX_HYST[1]); | |
1da177e4 | 750 | } else { |
8b4b0ab4 JD |
751 | data->in_input[4] = gl520_read_value(client, |
752 | GL520_REG_IN_INPUT[4]); | |
753 | data->in_min[4] = gl520_read_value(client, | |
754 | GL520_REG_IN_MIN[4]); | |
755 | data->in_max[4] = gl520_read_value(client, | |
756 | GL520_REG_IN_MAX[4]); | |
1da177e4 LT |
757 | } |
758 | ||
759 | data->last_updated = jiffies; | |
760 | data->valid = 1; | |
761 | } | |
762 | ||
9a61bf63 | 763 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
764 | |
765 | return data; | |
766 | } | |
767 | ||
768 | ||
769 | static int __init sensors_gl520sm_init(void) | |
770 | { | |
771 | return i2c_add_driver(&gl520_driver); | |
772 | } | |
773 | ||
774 | static void __exit sensors_gl520sm_exit(void) | |
775 | { | |
776 | i2c_del_driver(&gl520_driver); | |
777 | } | |
778 | ||
779 | ||
780 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
96de0e25 | 781 | "Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
1da177e4 LT |
782 | "Maarten Deprez <maartendeprez@users.sourceforge.net>"); |
783 | MODULE_DESCRIPTION("GL520SM driver"); | |
784 | MODULE_LICENSE("GPL"); | |
785 | ||
786 | module_init(sensors_gl520sm_init); | |
787 | module_exit(sensors_gl520sm_exit); |