Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
43da3d12 GR |
2 | * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware |
3 | * monitoring | |
4 | * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, | |
5 | * Kyösti Mälkki <kmalkki@cc.hut.fi> | |
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 | */ | |
1da177e4 LT |
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 */ | |
25e9c86d | 42 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
1da177e4 | 43 | |
43da3d12 GR |
44 | /* |
45 | * Many GL520 constants specified below | |
46 | * One of the inputs can be configured as either temp or voltage. | |
47 | * That's why _TEMP2 and _IN4 access the same register | |
48 | */ | |
1da177e4 LT |
49 | |
50 | /* The GL520 registers */ | |
51 | #define GL520_REG_CHIP_ID 0x00 | |
52 | #define GL520_REG_REVISION 0x01 | |
53 | #define GL520_REG_CONF 0x03 | |
54 | #define GL520_REG_MASK 0x11 | |
55 | ||
56 | #define GL520_REG_VID_INPUT 0x02 | |
57 | ||
8b4b0ab4 JD |
58 | static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; |
59 | static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; | |
60 | static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; | |
61 | static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; | |
62 | ||
63 | static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; | |
64 | static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; | |
65 | static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; | |
1da177e4 LT |
66 | |
67 | #define GL520_REG_FAN_INPUT 0x07 | |
68 | #define GL520_REG_FAN_MIN 0x08 | |
69 | #define GL520_REG_FAN_DIV 0x0f | |
70 | #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV | |
71 | ||
72 | #define GL520_REG_ALARMS 0x12 | |
73 | #define GL520_REG_BEEP_MASK 0x10 | |
74 | #define GL520_REG_BEEP_ENABLE GL520_REG_CONF | |
75 | ||
76 | /* | |
77 | * Function declarations | |
78 | */ | |
79 | ||
a23a9fe1 JD |
80 | static int gl520_probe(struct i2c_client *client, |
81 | const struct i2c_device_id *id); | |
310ec792 | 82 | static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info); |
1da177e4 | 83 | static void gl520_init_client(struct i2c_client *client); |
a23a9fe1 | 84 | static int gl520_remove(struct i2c_client *client); |
1da177e4 LT |
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 */ | |
a23a9fe1 | 90 | static const struct i2c_device_id gl520_id[] = { |
1f86df49 | 91 | { "gl520sm", 0 }, |
a23a9fe1 JD |
92 | { } |
93 | }; | |
94 | MODULE_DEVICE_TABLE(i2c, gl520_id); | |
95 | ||
1da177e4 | 96 | static struct i2c_driver gl520_driver = { |
a23a9fe1 | 97 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 98 | .driver = { |
cdaf7934 LR |
99 | .name = "gl520sm", |
100 | }, | |
a23a9fe1 JD |
101 | .probe = gl520_probe, |
102 | .remove = gl520_remove, | |
103 | .id_table = gl520_id, | |
104 | .detect = gl520_detect, | |
c3813d6a | 105 | .address_list = normal_i2c, |
1da177e4 LT |
106 | }; |
107 | ||
108 | /* Client data */ | |
109 | struct gl520_data { | |
1beeffe4 | 110 | struct device *hwmon_dev; |
9a61bf63 | 111 | struct mutex update_lock; |
1da177e4 LT |
112 | char valid; /* zero until the following fields are valid */ |
113 | unsigned long last_updated; /* in jiffies */ | |
114 | ||
115 | u8 vid; | |
116 | u8 vrm; | |
117 | u8 in_input[5]; /* [0] = VVD */ | |
118 | u8 in_min[5]; /* [0] = VDD */ | |
119 | u8 in_max[5]; /* [0] = VDD */ | |
120 | u8 fan_input[2]; | |
121 | u8 fan_min[2]; | |
122 | u8 fan_div[2]; | |
123 | u8 fan_off; | |
124 | u8 temp_input[2]; | |
125 | u8 temp_max[2]; | |
126 | u8 temp_max_hyst[2]; | |
127 | u8 alarms; | |
128 | u8 beep_enable; | |
129 | u8 beep_mask; | |
130 | u8 alarm_mask; | |
131 | u8 two_temps; | |
132 | }; | |
133 | ||
134 | /* | |
135 | * Sysfs stuff | |
136 | */ | |
137 | ||
86d47f12 JD |
138 | static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr, |
139 | char *buf) | |
1da177e4 | 140 | { |
86d47f12 | 141 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
142 | return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); |
143 | } | |
86d47f12 | 144 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); |
1da177e4 | 145 | |
43da3d12 GR |
146 | #define VDD_FROM_REG(val) (((val) * 95 + 2) / 4) |
147 | #define VDD_TO_REG(val) SENSORS_LIMIT((((val) * 4 + 47) / 95), 0, 255) | |
1da177e4 | 148 | |
43da3d12 GR |
149 | #define IN_FROM_REG(val) ((val) * 19) |
150 | #define IN_TO_REG(val) SENSORS_LIMIT((((val) + 9) / 19), 0, 255) | |
1da177e4 | 151 | |
86d47f12 JD |
152 | static ssize_t get_in_input(struct device *dev, struct device_attribute *attr, |
153 | char *buf) | |
1da177e4 | 154 | { |
86d47f12 JD |
155 | int n = to_sensor_dev_attr(attr)->index; |
156 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
157 | u8 r = data->in_input[n]; |
158 | ||
159 | if (n == 0) | |
160 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
161 | else | |
162 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
163 | } | |
164 | ||
86d47f12 JD |
165 | static ssize_t get_in_min(struct device *dev, struct device_attribute *attr, |
166 | char *buf) | |
1da177e4 | 167 | { |
86d47f12 JD |
168 | int n = to_sensor_dev_attr(attr)->index; |
169 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
170 | u8 r = data->in_min[n]; |
171 | ||
172 | if (n == 0) | |
173 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
174 | else | |
175 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
176 | } | |
177 | ||
86d47f12 JD |
178 | static ssize_t get_in_max(struct device *dev, struct device_attribute *attr, |
179 | char *buf) | |
1da177e4 | 180 | { |
86d47f12 JD |
181 | int n = to_sensor_dev_attr(attr)->index; |
182 | struct gl520_data *data = gl520_update_device(dev); | |
1da177e4 LT |
183 | u8 r = data->in_max[n]; |
184 | ||
185 | if (n == 0) | |
186 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); | |
187 | else | |
188 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); | |
189 | } | |
190 | ||
86d47f12 JD |
191 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
192 | const char *buf, size_t count) | |
1da177e4 | 193 | { |
86d47f12 JD |
194 | struct i2c_client *client = to_i2c_client(dev); |
195 | struct gl520_data *data = i2c_get_clientdata(client); | |
196 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 | 197 | u8 r; |
43da3d12 GR |
198 | long v; |
199 | int err; | |
200 | ||
201 | err = kstrtol(buf, 10, &v); | |
202 | if (err) | |
203 | return err; | |
1da177e4 | 204 | |
9a61bf63 | 205 | mutex_lock(&data->update_lock); |
1da177e4 LT |
206 | |
207 | if (n == 0) | |
208 | r = VDD_TO_REG(v); | |
209 | else | |
210 | r = IN_TO_REG(v); | |
211 | ||
212 | data->in_min[n] = r; | |
213 | ||
214 | if (n < 4) | |
86d47f12 JD |
215 | gl520_write_value(client, GL520_REG_IN_MIN[n], |
216 | (gl520_read_value(client, GL520_REG_IN_MIN[n]) | |
217 | & ~0xff) | r); | |
1da177e4 | 218 | else |
86d47f12 | 219 | gl520_write_value(client, GL520_REG_IN_MIN[n], r); |
1da177e4 | 220 | |
9a61bf63 | 221 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
222 | return count; |
223 | } | |
224 | ||
86d47f12 JD |
225 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
226 | const char *buf, size_t count) | |
1da177e4 | 227 | { |
86d47f12 JD |
228 | struct i2c_client *client = to_i2c_client(dev); |
229 | struct gl520_data *data = i2c_get_clientdata(client); | |
230 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 | 231 | u8 r; |
43da3d12 GR |
232 | long v; |
233 | int err; | |
234 | ||
235 | err = kstrtol(buf, 10, &v); | |
236 | if (err) | |
237 | return err; | |
1da177e4 LT |
238 | |
239 | if (n == 0) | |
240 | r = VDD_TO_REG(v); | |
241 | else | |
242 | r = IN_TO_REG(v); | |
243 | ||
9a61bf63 | 244 | mutex_lock(&data->update_lock); |
1da177e4 LT |
245 | |
246 | data->in_max[n] = r; | |
247 | ||
248 | if (n < 4) | |
86d47f12 JD |
249 | gl520_write_value(client, GL520_REG_IN_MAX[n], |
250 | (gl520_read_value(client, GL520_REG_IN_MAX[n]) | |
251 | & ~0xff00) | (r << 8)); | |
1da177e4 | 252 | else |
86d47f12 | 253 | gl520_write_value(client, GL520_REG_IN_MAX[n], r); |
1da177e4 | 254 | |
9a61bf63 | 255 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
256 | return count; |
257 | } | |
258 | ||
86d47f12 JD |
259 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0); |
260 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); | |
261 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); | |
262 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); | |
263 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); | |
264 | static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, | |
265 | get_in_min, set_in_min, 0); | |
266 | static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, | |
267 | get_in_min, set_in_min, 1); | |
268 | static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, | |
269 | get_in_min, set_in_min, 2); | |
270 | static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, | |
271 | get_in_min, set_in_min, 3); | |
272 | static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, | |
273 | get_in_min, set_in_min, 4); | |
274 | static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, | |
275 | get_in_max, set_in_max, 0); | |
276 | static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, | |
277 | get_in_max, set_in_max, 1); | |
278 | static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, | |
279 | get_in_max, set_in_max, 2); | |
280 | static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, | |
281 | get_in_max, set_in_max, 3); | |
282 | static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, | |
283 | get_in_max, set_in_max, 4); | |
284 | ||
1da177e4 | 285 | #define DIV_FROM_REG(val) (1 << (val)) |
43da3d12 GR |
286 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) |
287 | #define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \ | |
288 | SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, \ | |
289 | 255)) | |
1da177e4 | 290 | |
86d47f12 JD |
291 | static ssize_t get_fan_input(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", FAN_FROM_REG(data->fan_input[n], | |
298 | data->fan_div[n])); | |
1da177e4 LT |
299 | } |
300 | ||
86d47f12 JD |
301 | static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr, |
302 | char *buf) | |
1da177e4 | 303 | { |
86d47f12 JD |
304 | int n = to_sensor_dev_attr(attr)->index; |
305 | struct gl520_data *data = gl520_update_device(dev); | |
306 | ||
307 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], | |
308 | data->fan_div[n])); | |
1da177e4 LT |
309 | } |
310 | ||
86d47f12 JD |
311 | static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr, |
312 | char *buf) | |
1da177e4 | 313 | { |
86d47f12 JD |
314 | int n = to_sensor_dev_attr(attr)->index; |
315 | struct gl520_data *data = gl520_update_device(dev); | |
316 | ||
317 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); | |
1da177e4 LT |
318 | } |
319 | ||
86d47f12 JD |
320 | static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr, |
321 | char *buf) | |
1da177e4 | 322 | { |
86d47f12 | 323 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
324 | return sprintf(buf, "%d\n", data->fan_off); |
325 | } | |
326 | ||
86d47f12 JD |
327 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
328 | const char *buf, size_t count) | |
1da177e4 | 329 | { |
86d47f12 JD |
330 | struct i2c_client *client = to_i2c_client(dev); |
331 | struct gl520_data *data = i2c_get_clientdata(client); | |
332 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 | 333 | u8 r; |
43da3d12 GR |
334 | unsigned long v; |
335 | int err; | |
336 | ||
337 | err = kstrtoul(buf, 10, &v); | |
338 | if (err) | |
339 | return err; | |
1da177e4 | 340 | |
9a61bf63 | 341 | mutex_lock(&data->update_lock); |
86d47f12 JD |
342 | r = FAN_TO_REG(v, data->fan_div[n]); |
343 | data->fan_min[n] = r; | |
1da177e4 | 344 | |
86d47f12 JD |
345 | if (n == 0) |
346 | gl520_write_value(client, GL520_REG_FAN_MIN, | |
347 | (gl520_read_value(client, GL520_REG_FAN_MIN) | |
348 | & ~0xff00) | (r << 8)); | |
1da177e4 | 349 | else |
86d47f12 JD |
350 | gl520_write_value(client, GL520_REG_FAN_MIN, |
351 | (gl520_read_value(client, GL520_REG_FAN_MIN) | |
352 | & ~0xff) | r); | |
1da177e4 LT |
353 | |
354 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
86d47f12 JD |
355 | if (data->fan_min[n] == 0) |
356 | data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; | |
1da177e4 | 357 | else |
86d47f12 | 358 | data->alarm_mask |= (n == 0) ? 0x20 : 0x40; |
1da177e4 LT |
359 | data->beep_mask &= data->alarm_mask; |
360 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
361 | ||
9a61bf63 | 362 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
363 | return count; |
364 | } | |
365 | ||
86d47f12 JD |
366 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
367 | const char *buf, size_t count) | |
1da177e4 | 368 | { |
86d47f12 JD |
369 | struct i2c_client *client = to_i2c_client(dev); |
370 | struct gl520_data *data = i2c_get_clientdata(client); | |
371 | int n = to_sensor_dev_attr(attr)->index; | |
1da177e4 | 372 | u8 r; |
43da3d12 GR |
373 | unsigned long v; |
374 | int err; | |
375 | ||
376 | err = kstrtoul(buf, 10, &v); | |
377 | if (err) | |
378 | return err; | |
1da177e4 LT |
379 | |
380 | switch (v) { | |
43da3d12 GR |
381 | case 1: |
382 | r = 0; | |
383 | break; | |
384 | case 2: | |
385 | r = 1; | |
386 | break; | |
387 | case 4: | |
388 | r = 2; | |
389 | break; | |
390 | case 8: | |
391 | r = 3; | |
392 | break; | |
1da177e4 | 393 | default: |
43da3d12 GR |
394 | dev_err(&client->dev, |
395 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); | |
1da177e4 LT |
396 | return -EINVAL; |
397 | } | |
398 | ||
9a61bf63 | 399 | mutex_lock(&data->update_lock); |
86d47f12 | 400 | data->fan_div[n] = r; |
1da177e4 | 401 | |
86d47f12 JD |
402 | if (n == 0) |
403 | gl520_write_value(client, GL520_REG_FAN_DIV, | |
404 | (gl520_read_value(client, GL520_REG_FAN_DIV) | |
405 | & ~0xc0) | (r << 6)); | |
1da177e4 | 406 | else |
86d47f12 JD |
407 | gl520_write_value(client, GL520_REG_FAN_DIV, |
408 | (gl520_read_value(client, GL520_REG_FAN_DIV) | |
409 | & ~0x30) | (r << 4)); | |
1da177e4 | 410 | |
9a61bf63 | 411 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
412 | return count; |
413 | } | |
414 | ||
86d47f12 JD |
415 | static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr, |
416 | const char *buf, size_t count) | |
1da177e4 | 417 | { |
86d47f12 JD |
418 | struct i2c_client *client = to_i2c_client(dev); |
419 | struct gl520_data *data = i2c_get_clientdata(client); | |
43da3d12 GR |
420 | u8 r; |
421 | unsigned long v; | |
422 | int err; | |
423 | ||
424 | err = kstrtoul(buf, 10, &v); | |
425 | if (err) | |
426 | return err; | |
427 | ||
428 | r = (v ? 1 : 0); | |
1da177e4 | 429 | |
9a61bf63 | 430 | mutex_lock(&data->update_lock); |
1da177e4 | 431 | data->fan_off = r; |
86d47f12 JD |
432 | gl520_write_value(client, GL520_REG_FAN_OFF, |
433 | (gl520_read_value(client, GL520_REG_FAN_OFF) | |
434 | & ~0x0c) | (r << 2)); | |
9a61bf63 | 435 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
436 | return count; |
437 | } | |
438 | ||
86d47f12 JD |
439 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0); |
440 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); | |
441 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, | |
442 | get_fan_min, set_fan_min, 0); | |
443 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, | |
444 | get_fan_min, set_fan_min, 1); | |
445 | static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, | |
446 | get_fan_div, set_fan_div, 0); | |
447 | static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, | |
448 | get_fan_div, set_fan_div, 1); | |
449 | static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, | |
450 | get_fan_off, set_fan_off); | |
451 | ||
1da177e4 | 452 | #define TEMP_FROM_REG(val) (((val) - 130) * 1000) |
43da3d12 GR |
453 | #define TEMP_TO_REG(val) SENSORS_LIMIT(((((val) < 0 ? \ |
454 | (val) - 500 : (val) + 500) / 1000) + 130), 0, 255) | |
1da177e4 | 455 | |
86d47f12 JD |
456 | static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr, |
457 | char *buf) | |
1da177e4 | 458 | { |
86d47f12 JD |
459 | int n = to_sensor_dev_attr(attr)->index; |
460 | struct gl520_data *data = gl520_update_device(dev); | |
461 | ||
462 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); | |
1da177e4 LT |
463 | } |
464 | ||
86d47f12 JD |
465 | static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr, |
466 | char *buf) | |
1da177e4 | 467 | { |
86d47f12 JD |
468 | int n = to_sensor_dev_attr(attr)->index; |
469 | struct gl520_data *data = gl520_update_device(dev); | |
470 | ||
471 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); | |
1da177e4 LT |
472 | } |
473 | ||
43da3d12 GR |
474 | static ssize_t get_temp_max_hyst(struct device *dev, |
475 | struct device_attribute *attr, char *buf) | |
1da177e4 | 476 | { |
86d47f12 JD |
477 | int n = to_sensor_dev_attr(attr)->index; |
478 | struct gl520_data *data = gl520_update_device(dev); | |
479 | ||
480 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); | |
1da177e4 LT |
481 | } |
482 | ||
86d47f12 JD |
483 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
484 | const char *buf, size_t count) | |
1da177e4 | 485 | { |
86d47f12 JD |
486 | struct i2c_client *client = to_i2c_client(dev); |
487 | struct gl520_data *data = i2c_get_clientdata(client); | |
488 | int n = to_sensor_dev_attr(attr)->index; | |
43da3d12 GR |
489 | long v; |
490 | int err; | |
491 | ||
492 | err = kstrtol(buf, 10, &v); | |
493 | if (err) | |
494 | return err; | |
1da177e4 | 495 | |
9a61bf63 | 496 | mutex_lock(&data->update_lock); |
86d47f12 JD |
497 | data->temp_max[n] = TEMP_TO_REG(v); |
498 | gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); | |
9a61bf63 | 499 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
500 | return count; |
501 | } | |
502 | ||
86d47f12 JD |
503 | static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute |
504 | *attr, const char *buf, size_t count) | |
1da177e4 | 505 | { |
86d47f12 JD |
506 | struct i2c_client *client = to_i2c_client(dev); |
507 | struct gl520_data *data = i2c_get_clientdata(client); | |
508 | int n = to_sensor_dev_attr(attr)->index; | |
43da3d12 GR |
509 | long v; |
510 | int err; | |
511 | ||
512 | err = kstrtol(buf, 10, &v); | |
513 | if (err) | |
514 | return err; | |
1da177e4 | 515 | |
9a61bf63 | 516 | mutex_lock(&data->update_lock); |
86d47f12 JD |
517 | data->temp_max_hyst[n] = TEMP_TO_REG(v); |
518 | gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], | |
519 | data->temp_max_hyst[n]); | |
9a61bf63 | 520 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
521 | return count; |
522 | } | |
523 | ||
86d47f12 JD |
524 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0); |
525 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); | |
526 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, | |
527 | get_temp_max, set_temp_max, 0); | |
528 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, | |
529 | get_temp_max, set_temp_max, 1); | |
530 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
531 | get_temp_max_hyst, set_temp_max_hyst, 0); | |
532 | static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, | |
533 | get_temp_max_hyst, set_temp_max_hyst, 1); | |
534 | ||
535 | static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, | |
536 | char *buf) | |
1da177e4 | 537 | { |
86d47f12 | 538 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
539 | return sprintf(buf, "%d\n", data->alarms); |
540 | } | |
541 | ||
86d47f12 JD |
542 | static ssize_t get_beep_enable(struct device *dev, struct device_attribute |
543 | *attr, char *buf) | |
1da177e4 | 544 | { |
86d47f12 | 545 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
546 | return sprintf(buf, "%d\n", data->beep_enable); |
547 | } | |
548 | ||
86d47f12 JD |
549 | static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr, |
550 | char *buf) | |
1da177e4 | 551 | { |
86d47f12 | 552 | struct gl520_data *data = gl520_update_device(dev); |
1da177e4 LT |
553 | return sprintf(buf, "%d\n", data->beep_mask); |
554 | } | |
555 | ||
86d47f12 JD |
556 | static ssize_t set_beep_enable(struct device *dev, struct device_attribute |
557 | *attr, const char *buf, size_t count) | |
1da177e4 | 558 | { |
86d47f12 JD |
559 | struct i2c_client *client = to_i2c_client(dev); |
560 | struct gl520_data *data = i2c_get_clientdata(client); | |
43da3d12 GR |
561 | u8 r; |
562 | unsigned long v; | |
563 | int err; | |
564 | ||
565 | err = kstrtoul(buf, 10, &v); | |
566 | if (err) | |
567 | return err; | |
568 | ||
569 | r = (v ? 0 : 1); | |
1da177e4 | 570 | |
9a61bf63 | 571 | mutex_lock(&data->update_lock); |
1da177e4 | 572 | data->beep_enable = !r; |
86d47f12 JD |
573 | gl520_write_value(client, GL520_REG_BEEP_ENABLE, |
574 | (gl520_read_value(client, GL520_REG_BEEP_ENABLE) | |
575 | & ~0x04) | (r << 2)); | |
9a61bf63 | 576 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
577 | return count; |
578 | } | |
579 | ||
86d47f12 JD |
580 | static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr, |
581 | const char *buf, size_t count) | |
1da177e4 | 582 | { |
86d47f12 JD |
583 | struct i2c_client *client = to_i2c_client(dev); |
584 | struct gl520_data *data = i2c_get_clientdata(client); | |
43da3d12 GR |
585 | unsigned long r; |
586 | int err; | |
587 | ||
588 | err = kstrtoul(buf, 10, &r); | |
589 | if (err) | |
590 | return err; | |
f28dc2f7 | 591 | |
9a61bf63 | 592 | mutex_lock(&data->update_lock); |
1da177e4 LT |
593 | r &= data->alarm_mask; |
594 | data->beep_mask = r; | |
86d47f12 | 595 | gl520_write_value(client, GL520_REG_BEEP_MASK, r); |
9a61bf63 | 596 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
597 | return count; |
598 | } | |
599 | ||
86d47f12 JD |
600 | static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); |
601 | static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, | |
602 | get_beep_enable, set_beep_enable); | |
603 | static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, | |
604 | get_beep_mask, set_beep_mask); | |
605 | ||
e86a7760 JD |
606 | static ssize_t get_alarm(struct device *dev, struct device_attribute *attr, |
607 | char *buf) | |
608 | { | |
609 | int bit_nr = to_sensor_dev_attr(attr)->index; | |
610 | struct gl520_data *data = gl520_update_device(dev); | |
611 | ||
612 | return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); | |
613 | } | |
614 | ||
615 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0); | |
616 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1); | |
617 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2); | |
618 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3); | |
619 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4); | |
620 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5); | |
621 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6); | |
622 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7); | |
623 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7); | |
624 | ||
625 | static ssize_t get_beep(struct device *dev, struct device_attribute *attr, | |
626 | char *buf) | |
627 | { | |
628 | int bitnr = to_sensor_dev_attr(attr)->index; | |
629 | struct gl520_data *data = gl520_update_device(dev); | |
630 | ||
631 | return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); | |
632 | } | |
633 | ||
634 | static ssize_t set_beep(struct device *dev, struct device_attribute *attr, | |
635 | const char *buf, size_t count) | |
636 | { | |
637 | struct i2c_client *client = to_i2c_client(dev); | |
638 | struct gl520_data *data = i2c_get_clientdata(client); | |
639 | int bitnr = to_sensor_dev_attr(attr)->index; | |
640 | unsigned long bit; | |
641 | ||
43da3d12 GR |
642 | int err; |
643 | ||
644 | err = kstrtoul(buf, 10, &bit); | |
645 | if (err) | |
646 | return err; | |
e86a7760 JD |
647 | if (bit & ~1) |
648 | return -EINVAL; | |
649 | ||
650 | mutex_lock(&data->update_lock); | |
651 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
652 | if (bit) | |
653 | data->beep_mask |= (1 << bitnr); | |
654 | else | |
655 | data->beep_mask &= ~(1 << bitnr); | |
656 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
657 | mutex_unlock(&data->update_lock); | |
658 | return count; | |
659 | } | |
660 | ||
661 | static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0); | |
662 | static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1); | |
663 | static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2); | |
664 | static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3); | |
665 | static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4); | |
666 | static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5); | |
667 | static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6); | |
668 | static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); | |
669 | static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); | |
670 | ||
87808be4 JD |
671 | static struct attribute *gl520_attributes[] = { |
672 | &dev_attr_cpu0_vid.attr, | |
673 | ||
86d47f12 JD |
674 | &sensor_dev_attr_in0_input.dev_attr.attr, |
675 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
676 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
e86a7760 JD |
677 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
678 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
86d47f12 JD |
679 | &sensor_dev_attr_in1_input.dev_attr.attr, |
680 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
681 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
e86a7760 JD |
682 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
683 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
86d47f12 JD |
684 | &sensor_dev_attr_in2_input.dev_attr.attr, |
685 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
686 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
e86a7760 JD |
687 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
688 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
86d47f12 JD |
689 | &sensor_dev_attr_in3_input.dev_attr.attr, |
690 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
691 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
e86a7760 JD |
692 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
693 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
86d47f12 JD |
694 | |
695 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
696 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
697 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
e86a7760 JD |
698 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
699 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
87808be4 | 700 | &dev_attr_fan1_off.attr, |
86d47f12 JD |
701 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
702 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
703 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
e86a7760 JD |
704 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
705 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 | 706 | |
86d47f12 JD |
707 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
708 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
709 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
e86a7760 JD |
710 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
711 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
712 | |
713 | &dev_attr_alarms.attr, | |
714 | &dev_attr_beep_enable.attr, | |
715 | &dev_attr_beep_mask.attr, | |
716 | NULL | |
717 | }; | |
718 | ||
719 | static const struct attribute_group gl520_group = { | |
720 | .attrs = gl520_attributes, | |
721 | }; | |
722 | ||
f445a9af | 723 | static struct attribute *gl520_attributes_in4[] = { |
86d47f12 JD |
724 | &sensor_dev_attr_in4_input.dev_attr.attr, |
725 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
726 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
e86a7760 JD |
727 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
728 | &sensor_dev_attr_in4_beep.dev_attr.attr, | |
f445a9af GR |
729 | NULL |
730 | }; | |
87808be4 | 731 | |
f445a9af | 732 | static struct attribute *gl520_attributes_temp2[] = { |
86d47f12 JD |
733 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
734 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
735 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
e86a7760 JD |
736 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
737 | &sensor_dev_attr_temp2_beep.dev_attr.attr, | |
87808be4 JD |
738 | NULL |
739 | }; | |
740 | ||
f445a9af GR |
741 | static const struct attribute_group gl520_group_in4 = { |
742 | .attrs = gl520_attributes_in4, | |
743 | }; | |
744 | ||
745 | static const struct attribute_group gl520_group_temp2 = { | |
746 | .attrs = gl520_attributes_temp2, | |
87808be4 JD |
747 | }; |
748 | ||
1da177e4 LT |
749 | |
750 | /* | |
751 | * Real code | |
752 | */ | |
753 | ||
a23a9fe1 | 754 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 755 | static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 756 | { |
a23a9fe1 | 757 | struct i2c_adapter *adapter = client->adapter; |
1da177e4 LT |
758 | |
759 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
760 | I2C_FUNC_SMBUS_WORD_DATA)) | |
a23a9fe1 | 761 | return -ENODEV; |
1da177e4 LT |
762 | |
763 | /* Determine the chip type. */ | |
52df6440 JD |
764 | if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || |
765 | ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || | |
766 | ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { | |
767 | dev_dbg(&client->dev, "Unknown chip type, skipping\n"); | |
768 | return -ENODEV; | |
1da177e4 LT |
769 | } |
770 | ||
a23a9fe1 | 771 | strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); |
1da177e4 | 772 | |
a23a9fe1 JD |
773 | return 0; |
774 | } | |
775 | ||
776 | static int gl520_probe(struct i2c_client *client, | |
777 | const struct i2c_device_id *id) | |
778 | { | |
779 | struct gl520_data *data; | |
780 | int err; | |
781 | ||
647ff514 GR |
782 | data = devm_kzalloc(&client->dev, sizeof(struct gl520_data), |
783 | GFP_KERNEL); | |
784 | if (!data) | |
785 | return -ENOMEM; | |
a23a9fe1 JD |
786 | |
787 | i2c_set_clientdata(client, data); | |
788 | mutex_init(&data->update_lock); | |
1da177e4 LT |
789 | |
790 | /* Initialize the GL520SM chip */ | |
f28dc2f7 | 791 | gl520_init_client(client); |
1da177e4 LT |
792 | |
793 | /* Register sysfs hooks */ | |
43da3d12 GR |
794 | err = sysfs_create_group(&client->dev.kobj, &gl520_group); |
795 | if (err) | |
647ff514 | 796 | return err; |
1da177e4 | 797 | |
f445a9af GR |
798 | if (data->two_temps) |
799 | err = sysfs_create_group(&client->dev.kobj, &gl520_group_temp2); | |
800 | else | |
801 | err = sysfs_create_group(&client->dev.kobj, &gl520_group_in4); | |
1da177e4 | 802 | |
f445a9af GR |
803 | if (err) |
804 | goto exit_remove_files; | |
1da177e4 | 805 | |
f28dc2f7 | 806 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
807 | if (IS_ERR(data->hwmon_dev)) { |
808 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 JD |
809 | goto exit_remove_files; |
810 | } | |
1da177e4 LT |
811 | |
812 | return 0; | |
813 | ||
87808be4 | 814 | exit_remove_files: |
f28dc2f7 | 815 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
f445a9af GR |
816 | sysfs_remove_group(&client->dev.kobj, &gl520_group_in4); |
817 | sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2); | |
1da177e4 LT |
818 | return err; |
819 | } | |
820 | ||
821 | ||
822 | /* Called when we have found a new GL520SM. */ | |
823 | static void gl520_init_client(struct i2c_client *client) | |
824 | { | |
825 | struct gl520_data *data = i2c_get_clientdata(client); | |
826 | u8 oldconf, conf; | |
827 | ||
828 | conf = oldconf = gl520_read_value(client, GL520_REG_CONF); | |
829 | ||
830 | data->alarm_mask = 0xff; | |
303760b4 | 831 | data->vrm = vid_which_vrm(); |
1da177e4 LT |
832 | |
833 | if (extra_sensor_type == 1) | |
834 | conf &= ~0x10; | |
835 | else if (extra_sensor_type == 2) | |
836 | conf |= 0x10; | |
837 | data->two_temps = !(conf & 0x10); | |
838 | ||
839 | /* If IRQ# is disabled, we can safely force comparator mode */ | |
840 | if (!(conf & 0x20)) | |
841 | conf &= 0xf7; | |
842 | ||
843 | /* Enable monitoring if needed */ | |
844 | conf |= 0x40; | |
845 | ||
846 | if (conf != oldconf) | |
847 | gl520_write_value(client, GL520_REG_CONF, conf); | |
848 | ||
849 | gl520_update_device(&(client->dev)); | |
850 | ||
851 | if (data->fan_min[0] == 0) | |
852 | data->alarm_mask &= ~0x20; | |
853 | if (data->fan_min[1] == 0) | |
854 | data->alarm_mask &= ~0x40; | |
855 | ||
856 | data->beep_mask &= data->alarm_mask; | |
857 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); | |
858 | } | |
859 | ||
a23a9fe1 | 860 | static int gl520_remove(struct i2c_client *client) |
1da177e4 | 861 | { |
943b0830 | 862 | struct gl520_data *data = i2c_get_clientdata(client); |
1da177e4 | 863 | |
1beeffe4 | 864 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 | 865 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
f445a9af GR |
866 | sysfs_remove_group(&client->dev.kobj, &gl520_group_in4); |
867 | sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2); | |
943b0830 | 868 | |
1da177e4 LT |
869 | return 0; |
870 | } | |
871 | ||
872 | ||
43da3d12 GR |
873 | /* |
874 | * Registers 0x07 to 0x0c are word-sized, others are byte-sized | |
875 | * GL520 uses a high-byte first convention | |
876 | */ | |
1da177e4 LT |
877 | static int gl520_read_value(struct i2c_client *client, u8 reg) |
878 | { | |
879 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
90f4102c | 880 | return i2c_smbus_read_word_swapped(client, reg); |
1da177e4 LT |
881 | else |
882 | return i2c_smbus_read_byte_data(client, reg); | |
883 | } | |
884 | ||
885 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) | |
886 | { | |
887 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
90f4102c | 888 | return i2c_smbus_write_word_swapped(client, reg, value); |
1da177e4 LT |
889 | else |
890 | return i2c_smbus_write_byte_data(client, reg, value); | |
891 | } | |
892 | ||
893 | ||
894 | static struct gl520_data *gl520_update_device(struct device *dev) | |
895 | { | |
896 | struct i2c_client *client = to_i2c_client(dev); | |
897 | struct gl520_data *data = i2c_get_clientdata(client); | |
8b4b0ab4 | 898 | int val, i; |
1da177e4 | 899 | |
9a61bf63 | 900 | mutex_lock(&data->update_lock); |
1da177e4 | 901 | |
0cacdf29 | 902 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
1da177e4 LT |
903 | |
904 | dev_dbg(&client->dev, "Starting gl520sm update\n"); | |
905 | ||
906 | data->alarms = gl520_read_value(client, GL520_REG_ALARMS); | |
907 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); | |
43da3d12 GR |
908 | data->vid = gl520_read_value(client, |
909 | GL520_REG_VID_INPUT) & 0x1f; | |
1da177e4 | 910 | |
8b4b0ab4 JD |
911 | for (i = 0; i < 4; i++) { |
912 | data->in_input[i] = gl520_read_value(client, | |
913 | GL520_REG_IN_INPUT[i]); | |
914 | val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); | |
915 | data->in_min[i] = val & 0xff; | |
916 | data->in_max[i] = (val >> 8) & 0xff; | |
917 | } | |
1da177e4 LT |
918 | |
919 | val = gl520_read_value(client, GL520_REG_FAN_INPUT); | |
920 | data->fan_input[0] = (val >> 8) & 0xff; | |
921 | data->fan_input[1] = val & 0xff; | |
922 | ||
923 | val = gl520_read_value(client, GL520_REG_FAN_MIN); | |
924 | data->fan_min[0] = (val >> 8) & 0xff; | |
925 | data->fan_min[1] = val & 0xff; | |
926 | ||
8b4b0ab4 JD |
927 | data->temp_input[0] = gl520_read_value(client, |
928 | GL520_REG_TEMP_INPUT[0]); | |
929 | data->temp_max[0] = gl520_read_value(client, | |
930 | GL520_REG_TEMP_MAX[0]); | |
931 | data->temp_max_hyst[0] = gl520_read_value(client, | |
932 | GL520_REG_TEMP_MAX_HYST[0]); | |
1da177e4 LT |
933 | |
934 | val = gl520_read_value(client, GL520_REG_FAN_DIV); | |
935 | data->fan_div[0] = (val >> 6) & 0x03; | |
936 | data->fan_div[1] = (val >> 4) & 0x03; | |
937 | data->fan_off = (val >> 2) & 0x01; | |
938 | ||
939 | data->alarms &= data->alarm_mask; | |
940 | ||
941 | val = gl520_read_value(client, GL520_REG_CONF); | |
942 | data->beep_enable = !((val >> 2) & 1); | |
943 | ||
1da177e4 LT |
944 | /* Temp1 and Vin4 are the same input */ |
945 | if (data->two_temps) { | |
8b4b0ab4 JD |
946 | data->temp_input[1] = gl520_read_value(client, |
947 | GL520_REG_TEMP_INPUT[1]); | |
948 | data->temp_max[1] = gl520_read_value(client, | |
949 | GL520_REG_TEMP_MAX[1]); | |
950 | data->temp_max_hyst[1] = gl520_read_value(client, | |
951 | GL520_REG_TEMP_MAX_HYST[1]); | |
1da177e4 | 952 | } else { |
8b4b0ab4 JD |
953 | data->in_input[4] = gl520_read_value(client, |
954 | GL520_REG_IN_INPUT[4]); | |
955 | data->in_min[4] = gl520_read_value(client, | |
956 | GL520_REG_IN_MIN[4]); | |
957 | data->in_max[4] = gl520_read_value(client, | |
958 | GL520_REG_IN_MAX[4]); | |
1da177e4 LT |
959 | } |
960 | ||
961 | data->last_updated = jiffies; | |
962 | data->valid = 1; | |
963 | } | |
964 | ||
9a61bf63 | 965 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
966 | |
967 | return data; | |
968 | } | |
969 | ||
f0967eea | 970 | module_i2c_driver(gl520_driver); |
1da177e4 LT |
971 | |
972 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
96de0e25 | 973 | "Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
1da177e4 LT |
974 | "Maarten Deprez <maartendeprez@users.sourceforge.net>"); |
975 | MODULE_DESCRIPTION("GL520SM driver"); | |
976 | MODULE_LICENSE("GPL"); |