projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
i2c: Drop the kind parameter from detect callbacks
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / hwmon / gl520sm.c
CommitLineData
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 */
37static unsigned short extra_sensor_type;
38module_param(extra_sensor_type, ushort, 0);
39MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)");
40
41/* Addresses to scan */
25e9c86d 42static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
1da177e4
LT		 43
44/* Insmod parameters */
f4b50261 45I2C_CLIENT_INSMOD_1(gl520sm);
1da177e4 46
f28dc2f7 47/* Many GL520 constants specified below
1da177e4 48One of the inputs can be configured as either temp or voltage.
f28dc2f7 49That'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		 60static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
61static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
62static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
63static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
64
65static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
66static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
67static 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
a23a9fe1
JD		 82static int gl520_probe(struct i2c_client *client,
83 const struct i2c_device_id *id);
310ec792 84static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
1da177e4 85static void gl520_init_client(struct i2c_client *client);
a23a9fe1 86static int gl520_remove(struct i2c_client *client);
1da177e4
LT		 87static int gl520_read_value(struct i2c_client *client, u8 reg);
88static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
89static struct gl520_data *gl520_update_device(struct device *dev);
90
91/* Driver data */
a23a9fe1
JD		 92static const struct i2c_device_id gl520_id[] = {
93 { "gl520sm", gl520sm },
94 { }
95};
96MODULE_DEVICE_TABLE(i2c, gl520_id);
97
1da177e4 98static struct i2c_driver gl520_driver = {
a23a9fe1 99 .class = I2C_CLASS_HWMON,
cdaf7934 100 .driver = {
cdaf7934
LR		 101 .name = "gl520sm",
102 },
a23a9fe1
JD		 103 .probe = gl520_probe,
104 .remove = gl520_remove,
105 .id_table = gl520_id,
106 .detect = gl520_detect,
107 .address_data = &addr_data,
1da177e4
LT		 108};
109
110/* Client data */
111struct gl520_data {
1beeffe4 112 struct device *hwmon_dev;
9a61bf63 113 struct mutex update_lock;
1da177e4
LT		 114 char valid; /* zero until the following fields are valid */
115 unsigned long last_updated; /* in jiffies */
116
117 u8 vid;
118 u8 vrm;
119 u8 in_input[5]; /* [0] = VVD */
120 u8 in_min[5]; /* [0] = VDD */
121 u8 in_max[5]; /* [0] = VDD */
122 u8 fan_input[2];
123 u8 fan_min[2];
124 u8 fan_div[2];
125 u8 fan_off;
126 u8 temp_input[2];
127 u8 temp_max[2];
128 u8 temp_max_hyst[2];
129 u8 alarms;
130 u8 beep_enable;
131 u8 beep_mask;
132 u8 alarm_mask;
133 u8 two_temps;
134};
135
136/*
137 * Sysfs stuff
138 */
139
86d47f12
JD		 140static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
141 char *buf)
1da177e4 142{
86d47f12 143 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 144 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
145}
86d47f12 146static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
1da177e4
LT		 147
148#define VDD_FROM_REG(val) (((val)*95+2)/4)
149#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
150
151#define IN_FROM_REG(val) ((val)*19)
152#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
153
86d47f12
JD		 154static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
155 char *buf)
1da177e4 156{
86d47f12
JD		 157 int n = to_sensor_dev_attr(attr)->index;
158 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 159 u8 r = data->in_input[n];
160
161 if (n == 0)
162 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
163 else
164 return sprintf(buf, "%d\n", IN_FROM_REG(r));
165}
166
86d47f12
JD		 167static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
168 char *buf)
1da177e4 169{
86d47f12
JD		 170 int n = to_sensor_dev_attr(attr)->index;
171 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 172 u8 r = data->in_min[n];
173
174 if (n == 0)
175 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
176 else
177 return sprintf(buf, "%d\n", IN_FROM_REG(r));
178}
179
86d47f12
JD		 180static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
181 char *buf)
1da177e4 182{
86d47f12
JD		 183 int n = to_sensor_dev_attr(attr)->index;
184 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 185 u8 r = data->in_max[n];
186
187 if (n == 0)
188 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
189 else
190 return sprintf(buf, "%d\n", IN_FROM_REG(r));
191}
192
86d47f12
JD		 193static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
194 const char *buf, size_t count)
1da177e4 195{
86d47f12
JD		 196 struct i2c_client *client = to_i2c_client(dev);
197 struct gl520_data *data = i2c_get_clientdata(client);
198 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 199 long v = simple_strtol(buf, NULL, 10);
200 u8 r;
201
9a61bf63 202 mutex_lock(&data->update_lock);
1da177e4
LT		 203
204 if (n == 0)
205 r = VDD_TO_REG(v);
206 else
207 r = IN_TO_REG(v);
208
209 data->in_min[n] = r;
210
211 if (n < 4)
86d47f12
JD		 212 gl520_write_value(client, GL520_REG_IN_MIN[n],
213 (gl520_read_value(client, GL520_REG_IN_MIN[n])
214 & ~0xff) | r);
1da177e4 215 else
86d47f12 216 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
1da177e4 217
9a61bf63 218 mutex_unlock(&data->update_lock);
1da177e4
LT		 219 return count;
220}
221
86d47f12
JD		 222static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
223 const char *buf, size_t count)
1da177e4 224{
86d47f12
JD		 225 struct i2c_client *client = to_i2c_client(dev);
226 struct gl520_data *data = i2c_get_clientdata(client);
227 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 228 long v = simple_strtol(buf, NULL, 10);
229 u8 r;
230
231 if (n == 0)
232 r = VDD_TO_REG(v);
233 else
234 r = IN_TO_REG(v);
235
9a61bf63 236 mutex_lock(&data->update_lock);
1da177e4
LT		 237
238 data->in_max[n] = r;
239
240 if (n < 4)
86d47f12
JD		 241 gl520_write_value(client, GL520_REG_IN_MAX[n],
242 (gl520_read_value(client, GL520_REG_IN_MAX[n])
243 & ~0xff00) | (r << 8));
1da177e4 244 else
86d47f12 245 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
1da177e4 246
9a61bf63 247 mutex_unlock(&data->update_lock);
1da177e4
LT		 248 return count;
249}
250
86d47f12
JD		 251static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
252static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
253static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
254static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
255static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
256static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
257 get_in_min, set_in_min, 0);
258static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
259 get_in_min, set_in_min, 1);
260static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
261 get_in_min, set_in_min, 2);
262static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
263 get_in_min, set_in_min, 3);
264static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
265 get_in_min, set_in_min, 4);
266static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
267 get_in_max, set_in_max, 0);
268static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
269 get_in_max, set_in_max, 1);
270static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
271 get_in_max, set_in_max, 2);
272static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
273 get_in_max, set_in_max, 3);
274static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
275 get_in_max, set_in_max, 4);
276
1da177e4
LT		 277#define DIV_FROM_REG(val) (1 << (val))
278#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
279#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255));
280
86d47f12
JD		 281static ssize_t get_fan_input(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_input[n],
288 data->fan_div[n]));
1da177e4
LT		 289}
290
86d47f12
JD		 291static ssize_t get_fan_min(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_min[n],
298 data->fan_div[n]));
1da177e4
LT		 299}
300
86d47f12
JD		 301static ssize_t get_fan_div(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", DIV_FROM_REG(data->fan_div[n]));
1da177e4
LT		 308}
309
86d47f12
JD		 310static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
311 char *buf)
1da177e4 312{
86d47f12 313 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 314 return sprintf(buf, "%d\n", data->fan_off);
315}
316
86d47f12
JD		 317static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
318 const char *buf, size_t count)
1da177e4 319{
86d47f12
JD		 320 struct i2c_client *client = to_i2c_client(dev);
321 struct gl520_data *data = i2c_get_clientdata(client);
322 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 323 unsigned long v = simple_strtoul(buf, NULL, 10);
324 u8 r;
325
9a61bf63 326 mutex_lock(&data->update_lock);
86d47f12
JD		 327 r = FAN_TO_REG(v, data->fan_div[n]);
328 data->fan_min[n] = r;
1da177e4 329
86d47f12
JD		 330 if (n == 0)
331 gl520_write_value(client, GL520_REG_FAN_MIN,
332 (gl520_read_value(client, GL520_REG_FAN_MIN)
333 & ~0xff00) | (r << 8));
1da177e4 334 else
86d47f12
JD		 335 gl520_write_value(client, GL520_REG_FAN_MIN,
336 (gl520_read_value(client, GL520_REG_FAN_MIN)
337 & ~0xff) | r);
1da177e4
LT		 338
339 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
86d47f12
JD		 340 if (data->fan_min[n] == 0)
341 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
1da177e4 342 else
86d47f12 343 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
1da177e4
LT		 344 data->beep_mask &= data->alarm_mask;
345 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
346
9a61bf63 347 mutex_unlock(&data->update_lock);
1da177e4
LT		 348 return count;
349}
350
86d47f12
JD		 351static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
352 const char *buf, size_t count)
1da177e4 353{
86d47f12
JD		 354 struct i2c_client *client = to_i2c_client(dev);
355 struct gl520_data *data = i2c_get_clientdata(client);
356 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 357 unsigned long v = simple_strtoul(buf, NULL, 10);
358 u8 r;
359
360 switch (v) {
361 case 1: r = 0; break;
362 case 2: r = 1; break;
363 case 4: r = 2; break;
364 case 8: r = 3; break;
365 default:
366 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
367 return -EINVAL;
368 }
369
9a61bf63 370 mutex_lock(&data->update_lock);
86d47f12 371 data->fan_div[n] = r;
1da177e4 372
86d47f12
JD		 373 if (n == 0)
374 gl520_write_value(client, GL520_REG_FAN_DIV,
375 (gl520_read_value(client, GL520_REG_FAN_DIV)
376 & ~0xc0) | (r << 6));
1da177e4 377 else
86d47f12
JD		 378 gl520_write_value(client, GL520_REG_FAN_DIV,
379 (gl520_read_value(client, GL520_REG_FAN_DIV)
380 & ~0x30) | (r << 4));
1da177e4 381
9a61bf63 382 mutex_unlock(&data->update_lock);
1da177e4
LT		 383 return count;
384}
385
86d47f12
JD		 386static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
387 const char *buf, size_t count)
1da177e4 388{
86d47f12
JD		 389 struct i2c_client *client = to_i2c_client(dev);
390 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4
LT		 391 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
392
9a61bf63 393 mutex_lock(&data->update_lock);
1da177e4 394 data->fan_off = r;
86d47f12
JD		 395 gl520_write_value(client, GL520_REG_FAN_OFF,
396 (gl520_read_value(client, GL520_REG_FAN_OFF)
397 & ~0x0c) | (r << 2));
9a61bf63 398 mutex_unlock(&data->update_lock);
1da177e4
LT		 399 return count;
400}
401
86d47f12
JD		 402static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
403static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
404static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
405 get_fan_min, set_fan_min, 0);
406static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
407 get_fan_min, set_fan_min, 1);
408static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
409 get_fan_div, set_fan_div, 0);
410static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
411 get_fan_div, set_fan_div, 1);
412static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
413 get_fan_off, set_fan_off);
414
1da177e4
LT		 415#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
416#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
417
86d47f12
JD		 418static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
419 char *buf)
1da177e4 420{
86d47f12
JD		 421 int n = to_sensor_dev_attr(attr)->index;
422 struct gl520_data *data = gl520_update_device(dev);
423
424 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
1da177e4
LT		 425}
426
86d47f12
JD		 427static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
428 char *buf)
1da177e4 429{
86d47f12
JD		 430 int n = to_sensor_dev_attr(attr)->index;
431 struct gl520_data *data = gl520_update_device(dev);
432
433 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
1da177e4
LT		 434}
435
86d47f12
JD		 436static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
437 *attr, char *buf)
1da177e4 438{
86d47f12
JD		 439 int n = to_sensor_dev_attr(attr)->index;
440 struct gl520_data *data = gl520_update_device(dev);
441
442 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
1da177e4
LT		 443}
444
86d47f12
JD		 445static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
1da177e4 447{
86d47f12
JD		 448 struct i2c_client *client = to_i2c_client(dev);
449 struct gl520_data *data = i2c_get_clientdata(client);
450 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 451 long v = simple_strtol(buf, NULL, 10);
452
9a61bf63 453 mutex_lock(&data->update_lock);
86d47f12
JD		 454 data->temp_max[n] = TEMP_TO_REG(v);
455 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
9a61bf63 456 mutex_unlock(&data->update_lock);
1da177e4
LT		 457 return count;
458}
459
86d47f12
JD		 460static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
461 *attr, const char *buf, size_t count)
1da177e4 462{
86d47f12
JD		 463 struct i2c_client *client = to_i2c_client(dev);
464 struct gl520_data *data = i2c_get_clientdata(client);
465 int n = to_sensor_dev_attr(attr)->index;
1da177e4
LT		 466 long v = simple_strtol(buf, NULL, 10);
467
9a61bf63 468 mutex_lock(&data->update_lock);
86d47f12
JD		 469 data->temp_max_hyst[n] = TEMP_TO_REG(v);
470 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
471 data->temp_max_hyst[n]);
9a61bf63 472 mutex_unlock(&data->update_lock);
1da177e4
LT		 473 return count;
474}
475
86d47f12
JD		 476static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
477static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
478static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
479 get_temp_max, set_temp_max, 0);
480static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
481 get_temp_max, set_temp_max, 1);
482static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
483 get_temp_max_hyst, set_temp_max_hyst, 0);
484static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
485 get_temp_max_hyst, set_temp_max_hyst, 1);
486
487static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
488 char *buf)
1da177e4 489{
86d47f12 490 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 491 return sprintf(buf, "%d\n", data->alarms);
492}
493
86d47f12
JD		 494static ssize_t get_beep_enable(struct device *dev, struct device_attribute
495 *attr, char *buf)
1da177e4 496{
86d47f12 497 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 498 return sprintf(buf, "%d\n", data->beep_enable);
499}
500
86d47f12
JD		 501static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
502 char *buf)
1da177e4 503{
86d47f12 504 struct gl520_data *data = gl520_update_device(dev);
1da177e4
LT		 505 return sprintf(buf, "%d\n", data->beep_mask);
506}
507
86d47f12
JD		 508static ssize_t set_beep_enable(struct device *dev, struct device_attribute
509 *attr, const char *buf, size_t count)
1da177e4 510{
86d47f12
JD		 511 struct i2c_client *client = to_i2c_client(dev);
512 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4
LT		 513 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
514
9a61bf63 515 mutex_lock(&data->update_lock);
1da177e4 516 data->beep_enable = !r;
86d47f12
JD		 517 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
518 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
519 & ~0x04) | (r << 2));
9a61bf63 520 mutex_unlock(&data->update_lock);
1da177e4
LT		 521 return count;
522}
523
86d47f12
JD		 524static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
525 const char *buf, size_t count)
1da177e4 526{
86d47f12
JD		 527 struct i2c_client *client = to_i2c_client(dev);
528 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4 529 u8 r = simple_strtoul(buf, NULL, 10);
f28dc2f7 530
9a61bf63 531 mutex_lock(&data->update_lock);
1da177e4
LT		 532 r &= data->alarm_mask;
533 data->beep_mask = r;
86d47f12 534 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
9a61bf63 535 mutex_unlock(&data->update_lock);
1da177e4
LT		 536 return count;
537}
538
86d47f12
JD		 539static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
540static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
541 get_beep_enable, set_beep_enable);
542static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
543 get_beep_mask, set_beep_mask);
544
e86a7760
JD		 545static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
546 char *buf)
547{
548 int bit_nr = to_sensor_dev_attr(attr)->index;
549 struct gl520_data *data = gl520_update_device(dev);
550
551 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
552}
553
554static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
555static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
556static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
557static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
558static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
559static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
560static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
561static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
562static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
563
564static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
565 char *buf)
566{
567 int bitnr = to_sensor_dev_attr(attr)->index;
568 struct gl520_data *data = gl520_update_device(dev);
569
570 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
571}
572
573static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
574 const char *buf, size_t count)
575{
576 struct i2c_client *client = to_i2c_client(dev);
577 struct gl520_data *data = i2c_get_clientdata(client);
578 int bitnr = to_sensor_dev_attr(attr)->index;
579 unsigned long bit;
580
581 bit = simple_strtoul(buf, NULL, 10);
582 if (bit & ~1)
583 return -EINVAL;
584
585 mutex_lock(&data->update_lock);
586 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
587 if (bit)
588 data->beep_mask |= (1 << bitnr);
589 else
590 data->beep_mask &= ~(1 << bitnr);
591 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
592 mutex_unlock(&data->update_lock);
593 return count;
594}
595
596static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
597static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
598static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
599static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
600static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
601static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
602static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
603static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
604static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
605
87808be4
JD		 606static struct attribute *gl520_attributes[] = {
607 &dev_attr_cpu0_vid.attr,
608
86d47f12
JD		 609 &sensor_dev_attr_in0_input.dev_attr.attr,
610 &sensor_dev_attr_in0_min.dev_attr.attr,
611 &sensor_dev_attr_in0_max.dev_attr.attr,
e86a7760
JD		 612 &sensor_dev_attr_in0_alarm.dev_attr.attr,
613 &sensor_dev_attr_in0_beep.dev_attr.attr,
86d47f12
JD		 614 &sensor_dev_attr_in1_input.dev_attr.attr,
615 &sensor_dev_attr_in1_min.dev_attr.attr,
616 &sensor_dev_attr_in1_max.dev_attr.attr,
e86a7760
JD		 617 &sensor_dev_attr_in1_alarm.dev_attr.attr,
618 &sensor_dev_attr_in1_beep.dev_attr.attr,
86d47f12
JD		 619 &sensor_dev_attr_in2_input.dev_attr.attr,
620 &sensor_dev_attr_in2_min.dev_attr.attr,
621 &sensor_dev_attr_in2_max.dev_attr.attr,
e86a7760
JD		 622 &sensor_dev_attr_in2_alarm.dev_attr.attr,
623 &sensor_dev_attr_in2_beep.dev_attr.attr,
86d47f12
JD		 624 &sensor_dev_attr_in3_input.dev_attr.attr,
625 &sensor_dev_attr_in3_min.dev_attr.attr,
626 &sensor_dev_attr_in3_max.dev_attr.attr,
e86a7760
JD		 627 &sensor_dev_attr_in3_alarm.dev_attr.attr,
628 &sensor_dev_attr_in3_beep.dev_attr.attr,
86d47f12
JD		 629
630 &sensor_dev_attr_fan1_input.dev_attr.attr,
631 &sensor_dev_attr_fan1_min.dev_attr.attr,
632 &sensor_dev_attr_fan1_div.dev_attr.attr,
e86a7760
JD		 633 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
634 &sensor_dev_attr_fan1_beep.dev_attr.attr,
87808be4 635 &dev_attr_fan1_off.attr,
86d47f12
JD		 636 &sensor_dev_attr_fan2_input.dev_attr.attr,
637 &sensor_dev_attr_fan2_min.dev_attr.attr,
638 &sensor_dev_attr_fan2_div.dev_attr.attr,
e86a7760
JD		 639 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
640 &sensor_dev_attr_fan2_beep.dev_attr.attr,
87808be4 641
86d47f12
JD		 642 &sensor_dev_attr_temp1_input.dev_attr.attr,
643 &sensor_dev_attr_temp1_max.dev_attr.attr,
644 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
e86a7760
JD		 645 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
646 &sensor_dev_attr_temp1_beep.dev_attr.attr,
87808be4
JD		 647
648 &dev_attr_alarms.attr,
649 &dev_attr_beep_enable.attr,
650 &dev_attr_beep_mask.attr,
651 NULL
652};
653
654static const struct attribute_group gl520_group = {
655 .attrs = gl520_attributes,
656};
657
658static struct attribute *gl520_attributes_opt[] = {
86d47f12
JD		 659 &sensor_dev_attr_in4_input.dev_attr.attr,
660 &sensor_dev_attr_in4_min.dev_attr.attr,
661 &sensor_dev_attr_in4_max.dev_attr.attr,
e86a7760
JD		 662 &sensor_dev_attr_in4_alarm.dev_attr.attr,
663 &sensor_dev_attr_in4_beep.dev_attr.attr,
87808be4 664
86d47f12
JD		 665 &sensor_dev_attr_temp2_input.dev_attr.attr,
666 &sensor_dev_attr_temp2_max.dev_attr.attr,
667 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
e86a7760
JD		 668 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
669 &sensor_dev_attr_temp2_beep.dev_attr.attr,
87808be4
JD		 670 NULL
671};
672
673static const struct attribute_group gl520_group_opt = {
674 .attrs = gl520_attributes_opt,
675};
676
1da177e4
LT		 677
678/*
679 * Real code
680 */
681
a23a9fe1 682/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792 683static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
1da177e4 684{
a23a9fe1 685 struct i2c_adapter *adapter = client->adapter;
1da177e4
LT		 686
687 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
688 I2C_FUNC_SMBUS_WORD_DATA))
a23a9fe1 689 return -ENODEV;
1da177e4
LT		 690
691 /* Determine the chip type. */
52df6440
JD		 692 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
693 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
694 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
695 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
696 return -ENODEV;
1da177e4
LT		 697 }
698
a23a9fe1 699 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
1da177e4 700
a23a9fe1
JD		 701 return 0;
702}
703
704static int gl520_probe(struct i2c_client *client,
705 const struct i2c_device_id *id)
706{
707 struct gl520_data *data;
708 int err;
709
710 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
711 if (!data) {
712 err = -ENOMEM;
713 goto exit;
714 }
715
716 i2c_set_clientdata(client, data);
717 mutex_init(&data->update_lock);
1da177e4
LT		 718
719 /* Initialize the GL520SM chip */
f28dc2f7 720 gl520_init_client(client);
1da177e4
LT		 721
722 /* Register sysfs hooks */
f28dc2f7 723 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
a23a9fe1 724 goto exit_free;
1da177e4 725
87808be4 726 if (data->two_temps) {
f28dc2f7 727 if ((err = device_create_file(&client->dev,
86d47f12 728 &sensor_dev_attr_temp2_input.dev_attr))
f28dc2f7 729 || (err = device_create_file(&client->dev,
86d47f12 730 &sensor_dev_attr_temp2_max.dev_attr))
f28dc2f7 731 || (err = device_create_file(&client->dev,
e86a7760
JD		 732 &sensor_dev_attr_temp2_max_hyst.dev_attr))
733 || (err = device_create_file(&client->dev,
734 &sensor_dev_attr_temp2_alarm.dev_attr))
735 || (err = device_create_file(&client->dev,
736 &sensor_dev_attr_temp2_beep.dev_attr)))
87808be4
JD		 737 goto exit_remove_files;
738 } else {
f28dc2f7 739 if ((err = device_create_file(&client->dev,
86d47f12 740 &sensor_dev_attr_in4_input.dev_attr))
f28dc2f7 741 || (err = device_create_file(&client->dev,
86d47f12 742 &sensor_dev_attr_in4_min.dev_attr))
f28dc2f7 743 || (err = device_create_file(&client->dev,
e86a7760
JD		 744 &sensor_dev_attr_in4_max.dev_attr))
745 || (err = device_create_file(&client->dev,
746 &sensor_dev_attr_in4_alarm.dev_attr))
747 || (err = device_create_file(&client->dev,
748 &sensor_dev_attr_in4_beep.dev_attr)))
87808be4
JD		 749 goto exit_remove_files;
750 }
1da177e4 751
1da177e4 752
f28dc2f7 753 data->hwmon_dev = hwmon_device_register(&client->dev);
1beeffe4
TJ		 754 if (IS_ERR(data->hwmon_dev)) {
755 err = PTR_ERR(data->hwmon_dev);
87808be4
JD		 756 goto exit_remove_files;
757 }
1da177e4
LT		 758
759 return 0;
760
87808be4 761exit_remove_files:
f28dc2f7
JD		 762 sysfs_remove_group(&client->dev.kobj, &gl520_group);
763 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
1da177e4
LT		 764exit_free:
765 kfree(data);
766exit:
767 return err;
768}
769
770
771/* Called when we have found a new GL520SM. */
772static void gl520_init_client(struct i2c_client *client)
773{
774 struct gl520_data *data = i2c_get_clientdata(client);
775 u8 oldconf, conf;
776
777 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
778
779 data->alarm_mask = 0xff;
303760b4 780 data->vrm = vid_which_vrm();
1da177e4
LT		 781
782 if (extra_sensor_type == 1)
783 conf &= ~0x10;
784 else if (extra_sensor_type == 2)
785 conf |= 0x10;
786 data->two_temps = !(conf & 0x10);
787
788 /* If IRQ# is disabled, we can safely force comparator mode */
789 if (!(conf & 0x20))
790 conf &= 0xf7;
791
792 /* Enable monitoring if needed */
793 conf |= 0x40;
794
795 if (conf != oldconf)
796 gl520_write_value(client, GL520_REG_CONF, conf);
797
798 gl520_update_device(&(client->dev));
799
800 if (data->fan_min[0] == 0)
801 data->alarm_mask &= ~0x20;
802 if (data->fan_min[1] == 0)
803 data->alarm_mask &= ~0x40;
804
805 data->beep_mask &= data->alarm_mask;
806 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
807}
808
a23a9fe1 809static int gl520_remove(struct i2c_client *client)
1da177e4 810{
943b0830 811 struct gl520_data *data = i2c_get_clientdata(client);
1da177e4 812
1beeffe4 813 hwmon_device_unregister(data->hwmon_dev);
87808be4
JD		 814 sysfs_remove_group(&client->dev.kobj, &gl520_group);
815 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
943b0830 816
943b0830 817 kfree(data);
1da177e4
LT		 818 return 0;
819}
820
821
f28dc2f7 822/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
1da177e4
LT		 823 GL520 uses a high-byte first convention */
824static int gl520_read_value(struct i2c_client *client, u8 reg)
825{
826 if ((reg >= 0x07) && (reg <= 0x0c))
827 return swab16(i2c_smbus_read_word_data(client, reg));
828 else
829 return i2c_smbus_read_byte_data(client, reg);
830}
831
832static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
833{
834 if ((reg >= 0x07) && (reg <= 0x0c))
835 return i2c_smbus_write_word_data(client, reg, swab16(value));
836 else
837 return i2c_smbus_write_byte_data(client, reg, value);
838}
839
840
841static struct gl520_data *gl520_update_device(struct device *dev)
842{
843 struct i2c_client *client = to_i2c_client(dev);
844 struct gl520_data *data = i2c_get_clientdata(client);
8b4b0ab4 845 int val, i;
1da177e4 846
9a61bf63 847 mutex_lock(&data->update_lock);
1da177e4 848
0cacdf29 849 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
1da177e4
LT		 850
851 dev_dbg(&client->dev, "Starting gl520sm update\n");
852
853 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
854 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
855 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
856
8b4b0ab4
JD		 857 for (i = 0; i < 4; i++) {
858 data->in_input[i] = gl520_read_value(client,
859 GL520_REG_IN_INPUT[i]);
860 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
861 data->in_min[i] = val & 0xff;
862 data->in_max[i] = (val >> 8) & 0xff;
863 }
1da177e4
LT		 864
865 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
866 data->fan_input[0] = (val >> 8) & 0xff;
867 data->fan_input[1] = val & 0xff;
868
869 val = gl520_read_value(client, GL520_REG_FAN_MIN);
870 data->fan_min[0] = (val >> 8) & 0xff;
871 data->fan_min[1] = val & 0xff;
872
8b4b0ab4
JD		 873 data->temp_input[0] = gl520_read_value(client,
874 GL520_REG_TEMP_INPUT[0]);
875 data->temp_max[0] = gl520_read_value(client,
876 GL520_REG_TEMP_MAX[0]);
877 data->temp_max_hyst[0] = gl520_read_value(client,
878 GL520_REG_TEMP_MAX_HYST[0]);
1da177e4
LT		 879
880 val = gl520_read_value(client, GL520_REG_FAN_DIV);
881 data->fan_div[0] = (val >> 6) & 0x03;
882 data->fan_div[1] = (val >> 4) & 0x03;
883 data->fan_off = (val >> 2) & 0x01;
884
885 data->alarms &= data->alarm_mask;
886
887 val = gl520_read_value(client, GL520_REG_CONF);
888 data->beep_enable = !((val >> 2) & 1);
889
1da177e4
LT		 890 /* Temp1 and Vin4 are the same input */
891 if (data->two_temps) {
8b4b0ab4
JD		 892 data->temp_input[1] = gl520_read_value(client,
893 GL520_REG_TEMP_INPUT[1]);
894 data->temp_max[1] = gl520_read_value(client,
895 GL520_REG_TEMP_MAX[1]);
896 data->temp_max_hyst[1] = gl520_read_value(client,
897 GL520_REG_TEMP_MAX_HYST[1]);
1da177e4 898 } else {
8b4b0ab4
JD		 899 data->in_input[4] = gl520_read_value(client,
900 GL520_REG_IN_INPUT[4]);
901 data->in_min[4] = gl520_read_value(client,
902 GL520_REG_IN_MIN[4]);
903 data->in_max[4] = gl520_read_value(client,
904 GL520_REG_IN_MAX[4]);
1da177e4
LT		 905 }
906
907 data->last_updated = jiffies;
908 data->valid = 1;
909 }
910
9a61bf63 911 mutex_unlock(&data->update_lock);
1da177e4
LT		 912
913 return data;
914}
915
916
917static int __init sensors_gl520sm_init(void)
918{
919 return i2c_add_driver(&gl520_driver);
920}
921
922static void __exit sensors_gl520sm_exit(void)
923{
924 i2c_del_driver(&gl520_driver);
925}
926
927
928MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
96de0e25 929 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
1da177e4
LT		 930 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
931MODULE_DESCRIPTION("GL520SM driver");
932MODULE_LICENSE("GPL");
933
934module_init(sensors_gl520sm_init);
935module_exit(sensors_gl520sm_exit);
kernel source for telekom puls (alcatel/mediatek)