blob: cd6085bbfba70c96a8dcf8378e4ae525d0af47fb [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
Jan Engelhardt96de0e22007-10-19 23:21:04 +02005 Kyösti Mälkki <kmalkki@cc.hut.fi>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 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>
Jean Delvare0cacdf22005-07-29 12:15:12 -070027#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/i2c.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040029#include <linux/hwmon.h>
Jean Delvare86d47f12007-11-04 23:45:14 +010030#include <linux/hwmon-sysfs.h>
Jean Delvare303760b2005-07-31 21:52:01 +020031#include <linux/hwmon-vid.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040032#include <linux/err.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010033#include <linux/mutex.h>
Jean Delvare87808be2006-09-24 21:17:13 +020034#include <linux/sysfs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
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 */
Mark M. Hoffman25e9c862008-02-17 22:28:03 -050042static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Jean Delvaref28dc2f2007-11-04 23:44:23 +010044/* Many GL520 constants specified below
Linus Torvalds1da177e2005-04-16 15:20:36 -070045One of the inputs can be configured as either temp or voltage.
Jean Delvaref28dc2f2007-11-04 23:44:23 +010046That's why _TEMP2 and _IN4 access the same register
Linus Torvalds1da177e2005-04-16 15:20:36 -070047*/
48
49/* The GL520 registers */
50#define GL520_REG_CHIP_ID 0x00
51#define GL520_REG_REVISION 0x01
52#define GL520_REG_CONF 0x03
53#define GL520_REG_MASK 0x11
54
55#define GL520_REG_VID_INPUT 0x02
56
Jean Delvare8b4b0ab2007-11-04 23:44:52 +010057static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
58static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
59static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
60static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Jean Delvare8b4b0ab2007-11-04 23:44:52 +010062static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
63static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
64static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66#define GL520_REG_FAN_INPUT 0x07
67#define GL520_REG_FAN_MIN 0x08
68#define GL520_REG_FAN_DIV 0x0f
69#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV
70
71#define GL520_REG_ALARMS 0x12
72#define GL520_REG_BEEP_MASK 0x10
73#define GL520_REG_BEEP_ENABLE GL520_REG_CONF
74
75/*
76 * Function declarations
77 */
78
Jean Delvarea23a9fe2008-07-16 19:30:13 +020079static int gl520_probe(struct i2c_client *client,
80 const struct i2c_device_id *id);
Jean Delvare310ec792009-12-14 21:17:23 +010081static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082static void gl520_init_client(struct i2c_client *client);
Jean Delvarea23a9fe2008-07-16 19:30:13 +020083static int gl520_remove(struct i2c_client *client);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084static int gl520_read_value(struct i2c_client *client, u8 reg);
85static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
86static struct gl520_data *gl520_update_device(struct device *dev);
87
88/* Driver data */
Jean Delvarea23a9fe2008-07-16 19:30:13 +020089static const struct i2c_device_id gl520_id[] = {
Jean Delvare1f86df42009-12-14 21:17:26 +010090 { "gl520sm", 0 },
Jean Delvarea23a9fe2008-07-16 19:30:13 +020091 { }
92};
93MODULE_DEVICE_TABLE(i2c, gl520_id);
94
Linus Torvalds1da177e2005-04-16 15:20:36 -070095static struct i2c_driver gl520_driver = {
Jean Delvarea23a9fe2008-07-16 19:30:13 +020096 .class = I2C_CLASS_HWMON,
Laurent Riffardcdaf7932005-11-26 20:37:41 +010097 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +010098 .name = "gl520sm",
99 },
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200100 .probe = gl520_probe,
101 .remove = gl520_remove,
102 .id_table = gl520_id,
103 .detect = gl520_detect,
Jean Delvarec3813d62009-12-14 21:17:25 +0100104 .address_list = normal_i2c,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105};
106
107/* Client data */
108struct gl520_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700109 struct device *hwmon_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100110 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 char valid; /* zero until the following fields are valid */
112 unsigned long last_updated; /* in jiffies */
113
114 u8 vid;
115 u8 vrm;
116 u8 in_input[5]; /* [0] = VVD */
117 u8 in_min[5]; /* [0] = VDD */
118 u8 in_max[5]; /* [0] = VDD */
119 u8 fan_input[2];
120 u8 fan_min[2];
121 u8 fan_div[2];
122 u8 fan_off;
123 u8 temp_input[2];
124 u8 temp_max[2];
125 u8 temp_max_hyst[2];
126 u8 alarms;
127 u8 beep_enable;
128 u8 beep_mask;
129 u8 alarm_mask;
130 u8 two_temps;
131};
132
133/*
134 * Sysfs stuff
135 */
136
Jean Delvare86d47f12007-11-04 23:45:14 +0100137static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
138 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139{
Jean Delvare86d47f12007-11-04 23:45:14 +0100140 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
142}
Jean Delvare86d47f12007-11-04 23:45:14 +0100143static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145#define VDD_FROM_REG(val) (((val)*95+2)/4)
146#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
147
148#define IN_FROM_REG(val) ((val)*19)
149#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
150
Jean Delvare86d47f12007-11-04 23:45:14 +0100151static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
152 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153{
Jean Delvare86d47f12007-11-04 23:45:14 +0100154 int n = to_sensor_dev_attr(attr)->index;
155 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 u8 r = data->in_input[n];
157
158 if (n == 0)
159 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
160 else
161 return sprintf(buf, "%d\n", IN_FROM_REG(r));
162}
163
Jean Delvare86d47f12007-11-04 23:45:14 +0100164static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
165 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166{
Jean Delvare86d47f12007-11-04 23:45:14 +0100167 int n = to_sensor_dev_attr(attr)->index;
168 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 u8 r = data->in_min[n];
170
171 if (n == 0)
172 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
173 else
174 return sprintf(buf, "%d\n", IN_FROM_REG(r));
175}
176
Jean Delvare86d47f12007-11-04 23:45:14 +0100177static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
178 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179{
Jean Delvare86d47f12007-11-04 23:45:14 +0100180 int n = to_sensor_dev_attr(attr)->index;
181 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 u8 r = data->in_max[n];
183
184 if (n == 0)
185 return sprintf(buf, "%d\n", VDD_FROM_REG(r));
186 else
187 return sprintf(buf, "%d\n", IN_FROM_REG(r));
188}
189
Jean Delvare86d47f12007-11-04 23:45:14 +0100190static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
191 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192{
Jean Delvare86d47f12007-11-04 23:45:14 +0100193 struct i2c_client *client = to_i2c_client(dev);
194 struct gl520_data *data = i2c_get_clientdata(client);
195 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 long v = simple_strtol(buf, NULL, 10);
197 u8 r;
198
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100199 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
201 if (n == 0)
202 r = VDD_TO_REG(v);
203 else
204 r = IN_TO_REG(v);
205
206 data->in_min[n] = r;
207
208 if (n < 4)
Jean Delvare86d47f12007-11-04 23:45:14 +0100209 gl520_write_value(client, GL520_REG_IN_MIN[n],
210 (gl520_read_value(client, GL520_REG_IN_MIN[n])
211 & ~0xff) | r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100213 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100215 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 return count;
217}
218
Jean Delvare86d47f12007-11-04 23:45:14 +0100219static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
220 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221{
Jean Delvare86d47f12007-11-04 23:45:14 +0100222 struct i2c_client *client = to_i2c_client(dev);
223 struct gl520_data *data = i2c_get_clientdata(client);
224 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 long v = simple_strtol(buf, NULL, 10);
226 u8 r;
227
228 if (n == 0)
229 r = VDD_TO_REG(v);
230 else
231 r = IN_TO_REG(v);
232
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100233 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235 data->in_max[n] = r;
236
237 if (n < 4)
Jean Delvare86d47f12007-11-04 23:45:14 +0100238 gl520_write_value(client, GL520_REG_IN_MAX[n],
239 (gl520_read_value(client, GL520_REG_IN_MAX[n])
240 & ~0xff00) | (r << 8));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100242 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100244 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 return count;
246}
247
Jean Delvare86d47f12007-11-04 23:45:14 +0100248static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
249static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
250static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
251static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
252static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
253static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
254 get_in_min, set_in_min, 0);
255static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
256 get_in_min, set_in_min, 1);
257static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
258 get_in_min, set_in_min, 2);
259static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
260 get_in_min, set_in_min, 3);
261static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
262 get_in_min, set_in_min, 4);
263static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
264 get_in_max, set_in_max, 0);
265static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
266 get_in_max, set_in_max, 1);
267static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
268 get_in_max, set_in_max, 2);
269static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
270 get_in_max, set_in_max, 3);
271static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
272 get_in_max, set_in_max, 4);
273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274#define DIV_FROM_REG(val) (1 << (val))
275#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
Phil Carmody497888c2011-07-14 15:07:13 +0300276#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277
Jean Delvare86d47f12007-11-04 23:45:14 +0100278static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
279 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280{
Jean Delvare86d47f12007-11-04 23:45:14 +0100281 int n = to_sensor_dev_attr(attr)->index;
282 struct gl520_data *data = gl520_update_device(dev);
283
284 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n],
285 data->fan_div[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286}
287
Jean Delvare86d47f12007-11-04 23:45:14 +0100288static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
289 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290{
Jean Delvare86d47f12007-11-04 23:45:14 +0100291 int n = to_sensor_dev_attr(attr)->index;
292 struct gl520_data *data = gl520_update_device(dev);
293
294 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n],
295 data->fan_div[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Jean Delvare86d47f12007-11-04 23:45:14 +0100298static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
299 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300{
Jean Delvare86d47f12007-11-04 23:45:14 +0100301 int n = to_sensor_dev_attr(attr)->index;
302 struct gl520_data *data = gl520_update_device(dev);
303
304 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305}
306
Jean Delvare86d47f12007-11-04 23:45:14 +0100307static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
308 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309{
Jean Delvare86d47f12007-11-04 23:45:14 +0100310 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 return sprintf(buf, "%d\n", data->fan_off);
312}
313
Jean Delvare86d47f12007-11-04 23:45:14 +0100314static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
315 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316{
Jean Delvare86d47f12007-11-04 23:45:14 +0100317 struct i2c_client *client = to_i2c_client(dev);
318 struct gl520_data *data = i2c_get_clientdata(client);
319 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 unsigned long v = simple_strtoul(buf, NULL, 10);
321 u8 r;
322
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100323 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100324 r = FAN_TO_REG(v, data->fan_div[n]);
325 data->fan_min[n] = r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
Jean Delvare86d47f12007-11-04 23:45:14 +0100327 if (n == 0)
328 gl520_write_value(client, GL520_REG_FAN_MIN,
329 (gl520_read_value(client, GL520_REG_FAN_MIN)
330 & ~0xff00) | (r << 8));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100332 gl520_write_value(client, GL520_REG_FAN_MIN,
333 (gl520_read_value(client, GL520_REG_FAN_MIN)
334 & ~0xff) | r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
336 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
Jean Delvare86d47f12007-11-04 23:45:14 +0100337 if (data->fan_min[n] == 0)
338 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100340 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 data->beep_mask &= data->alarm_mask;
342 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
343
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100344 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 return count;
346}
347
Jean Delvare86d47f12007-11-04 23:45:14 +0100348static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
349 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350{
Jean Delvare86d47f12007-11-04 23:45:14 +0100351 struct i2c_client *client = to_i2c_client(dev);
352 struct gl520_data *data = i2c_get_clientdata(client);
353 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 unsigned long v = simple_strtoul(buf, NULL, 10);
355 u8 r;
356
357 switch (v) {
358 case 1: r = 0; break;
359 case 2: r = 1; break;
360 case 4: r = 2; break;
361 case 8: r = 3; break;
362 default:
363 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
364 return -EINVAL;
365 }
366
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100367 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100368 data->fan_div[n] = r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Jean Delvare86d47f12007-11-04 23:45:14 +0100370 if (n == 0)
371 gl520_write_value(client, GL520_REG_FAN_DIV,
372 (gl520_read_value(client, GL520_REG_FAN_DIV)
373 & ~0xc0) | (r << 6));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100375 gl520_write_value(client, GL520_REG_FAN_DIV,
376 (gl520_read_value(client, GL520_REG_FAN_DIV)
377 & ~0x30) | (r << 4));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100379 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 return count;
381}
382
Jean Delvare86d47f12007-11-04 23:45:14 +0100383static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
384 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385{
Jean Delvare86d47f12007-11-04 23:45:14 +0100386 struct i2c_client *client = to_i2c_client(dev);
387 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 u8 r = simple_strtoul(buf, NULL, 10)?1:0;
389
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100390 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 data->fan_off = r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100392 gl520_write_value(client, GL520_REG_FAN_OFF,
393 (gl520_read_value(client, GL520_REG_FAN_OFF)
394 & ~0x0c) | (r << 2));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100395 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 return count;
397}
398
Jean Delvare86d47f12007-11-04 23:45:14 +0100399static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
400static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
401static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
402 get_fan_min, set_fan_min, 0);
403static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
404 get_fan_min, set_fan_min, 1);
405static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
406 get_fan_div, set_fan_div, 0);
407static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
408 get_fan_div, set_fan_div, 1);
409static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
410 get_fan_off, set_fan_off);
411
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
413#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
414
Jean Delvare86d47f12007-11-04 23:45:14 +0100415static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
416 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
Jean Delvare86d47f12007-11-04 23:45:14 +0100418 int n = to_sensor_dev_attr(attr)->index;
419 struct gl520_data *data = gl520_update_device(dev);
420
421 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422}
423
Jean Delvare86d47f12007-11-04 23:45:14 +0100424static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
425 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426{
Jean Delvare86d47f12007-11-04 23:45:14 +0100427 int n = to_sensor_dev_attr(attr)->index;
428 struct gl520_data *data = gl520_update_device(dev);
429
430 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431}
432
Jean Delvare86d47f12007-11-04 23:45:14 +0100433static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
434 *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
Jean Delvare86d47f12007-11-04 23:45:14 +0100436 int n = to_sensor_dev_attr(attr)->index;
437 struct gl520_data *data = gl520_update_device(dev);
438
439 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440}
441
Jean Delvare86d47f12007-11-04 23:45:14 +0100442static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444{
Jean Delvare86d47f12007-11-04 23:45:14 +0100445 struct i2c_client *client = to_i2c_client(dev);
446 struct gl520_data *data = i2c_get_clientdata(client);
447 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 long v = simple_strtol(buf, NULL, 10);
449
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100450 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100451 data->temp_max[n] = TEMP_TO_REG(v);
452 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100453 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 return count;
455}
456
Jean Delvare86d47f12007-11-04 23:45:14 +0100457static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
458 *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459{
Jean Delvare86d47f12007-11-04 23:45:14 +0100460 struct i2c_client *client = to_i2c_client(dev);
461 struct gl520_data *data = i2c_get_clientdata(client);
462 int n = to_sensor_dev_attr(attr)->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 long v = simple_strtol(buf, NULL, 10);
464
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100465 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100466 data->temp_max_hyst[n] = TEMP_TO_REG(v);
467 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n],
468 data->temp_max_hyst[n]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100469 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 return count;
471}
472
Jean Delvare86d47f12007-11-04 23:45:14 +0100473static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
474static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
475static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
476 get_temp_max, set_temp_max, 0);
477static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
478 get_temp_max, set_temp_max, 1);
479static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
480 get_temp_max_hyst, set_temp_max_hyst, 0);
481static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
482 get_temp_max_hyst, set_temp_max_hyst, 1);
483
484static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
485 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486{
Jean Delvare86d47f12007-11-04 23:45:14 +0100487 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 return sprintf(buf, "%d\n", data->alarms);
489}
490
Jean Delvare86d47f12007-11-04 23:45:14 +0100491static ssize_t get_beep_enable(struct device *dev, struct device_attribute
492 *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493{
Jean Delvare86d47f12007-11-04 23:45:14 +0100494 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 return sprintf(buf, "%d\n", data->beep_enable);
496}
497
Jean Delvare86d47f12007-11-04 23:45:14 +0100498static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
499 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500{
Jean Delvare86d47f12007-11-04 23:45:14 +0100501 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 return sprintf(buf, "%d\n", data->beep_mask);
503}
504
Jean Delvare86d47f12007-11-04 23:45:14 +0100505static ssize_t set_beep_enable(struct device *dev, struct device_attribute
506 *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507{
Jean Delvare86d47f12007-11-04 23:45:14 +0100508 struct i2c_client *client = to_i2c_client(dev);
509 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 u8 r = simple_strtoul(buf, NULL, 10)?0:1;
511
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100512 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 data->beep_enable = !r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100514 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
515 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
516 & ~0x04) | (r << 2));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100517 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 return count;
519}
520
Jean Delvare86d47f12007-11-04 23:45:14 +0100521static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
522 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Jean Delvare86d47f12007-11-04 23:45:14 +0100524 struct i2c_client *client = to_i2c_client(dev);
525 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 u8 r = simple_strtoul(buf, NULL, 10);
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100527
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100528 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 r &= data->alarm_mask;
530 data->beep_mask = r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100531 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100532 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 return count;
534}
535
Jean Delvare86d47f12007-11-04 23:45:14 +0100536static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
537static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
538 get_beep_enable, set_beep_enable);
539static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
540 get_beep_mask, set_beep_mask);
541
Jean Delvaree86a7762007-11-04 23:45:41 +0100542static ssize_t get_alarm(struct device *dev, struct device_attribute *attr,
543 char *buf)
544{
545 int bit_nr = to_sensor_dev_attr(attr)->index;
546 struct gl520_data *data = gl520_update_device(dev);
547
548 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1);
549}
550
551static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
552static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
553static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
554static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
555static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
556static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
557static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
558static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
559static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
560
561static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
562 char *buf)
563{
564 int bitnr = to_sensor_dev_attr(attr)->index;
565 struct gl520_data *data = gl520_update_device(dev);
566
567 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
568}
569
570static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
571 const char *buf, size_t count)
572{
573 struct i2c_client *client = to_i2c_client(dev);
574 struct gl520_data *data = i2c_get_clientdata(client);
575 int bitnr = to_sensor_dev_attr(attr)->index;
576 unsigned long bit;
577
578 bit = simple_strtoul(buf, NULL, 10);
579 if (bit & ~1)
580 return -EINVAL;
581
582 mutex_lock(&data->update_lock);
583 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
584 if (bit)
585 data->beep_mask |= (1 << bitnr);
586 else
587 data->beep_mask &= ~(1 << bitnr);
588 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
589 mutex_unlock(&data->update_lock);
590 return count;
591}
592
593static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
594static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
595static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
596static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
597static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
598static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
599static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
600static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
601static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
602
Jean Delvare87808be2006-09-24 21:17:13 +0200603static struct attribute *gl520_attributes[] = {
604 &dev_attr_cpu0_vid.attr,
605
Jean Delvare86d47f12007-11-04 23:45:14 +0100606 &sensor_dev_attr_in0_input.dev_attr.attr,
607 &sensor_dev_attr_in0_min.dev_attr.attr,
608 &sensor_dev_attr_in0_max.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100609 &sensor_dev_attr_in0_alarm.dev_attr.attr,
610 &sensor_dev_attr_in0_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100611 &sensor_dev_attr_in1_input.dev_attr.attr,
612 &sensor_dev_attr_in1_min.dev_attr.attr,
613 &sensor_dev_attr_in1_max.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100614 &sensor_dev_attr_in1_alarm.dev_attr.attr,
615 &sensor_dev_attr_in1_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100616 &sensor_dev_attr_in2_input.dev_attr.attr,
617 &sensor_dev_attr_in2_min.dev_attr.attr,
618 &sensor_dev_attr_in2_max.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100619 &sensor_dev_attr_in2_alarm.dev_attr.attr,
620 &sensor_dev_attr_in2_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100621 &sensor_dev_attr_in3_input.dev_attr.attr,
622 &sensor_dev_attr_in3_min.dev_attr.attr,
623 &sensor_dev_attr_in3_max.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100624 &sensor_dev_attr_in3_alarm.dev_attr.attr,
625 &sensor_dev_attr_in3_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200626
Jean Delvare86d47f12007-11-04 23:45:14 +0100627 &sensor_dev_attr_fan1_input.dev_attr.attr,
628 &sensor_dev_attr_fan1_min.dev_attr.attr,
629 &sensor_dev_attr_fan1_div.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100630 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
631 &sensor_dev_attr_fan1_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200632 &dev_attr_fan1_off.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100633 &sensor_dev_attr_fan2_input.dev_attr.attr,
634 &sensor_dev_attr_fan2_min.dev_attr.attr,
635 &sensor_dev_attr_fan2_div.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100636 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
637 &sensor_dev_attr_fan2_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200638
Jean Delvare86d47f12007-11-04 23:45:14 +0100639 &sensor_dev_attr_temp1_input.dev_attr.attr,
640 &sensor_dev_attr_temp1_max.dev_attr.attr,
641 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100642 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
643 &sensor_dev_attr_temp1_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200644
645 &dev_attr_alarms.attr,
646 &dev_attr_beep_enable.attr,
647 &dev_attr_beep_mask.attr,
648 NULL
649};
650
651static const struct attribute_group gl520_group = {
652 .attrs = gl520_attributes,
653};
654
655static struct attribute *gl520_attributes_opt[] = {
Jean Delvare86d47f12007-11-04 23:45:14 +0100656 &sensor_dev_attr_in4_input.dev_attr.attr,
657 &sensor_dev_attr_in4_min.dev_attr.attr,
658 &sensor_dev_attr_in4_max.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100659 &sensor_dev_attr_in4_alarm.dev_attr.attr,
660 &sensor_dev_attr_in4_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200661
Jean Delvare86d47f12007-11-04 23:45:14 +0100662 &sensor_dev_attr_temp2_input.dev_attr.attr,
663 &sensor_dev_attr_temp2_max.dev_attr.attr,
664 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
Jean Delvaree86a7762007-11-04 23:45:41 +0100665 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
666 &sensor_dev_attr_temp2_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200667 NULL
668};
669
670static const struct attribute_group gl520_group_opt = {
671 .attrs = gl520_attributes_opt,
672};
673
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674
675/*
676 * Real code
677 */
678
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200679/* Return 0 if detection is successful, -ENODEV otherwise */
Jean Delvare310ec792009-12-14 21:17:23 +0100680static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681{
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200682 struct i2c_adapter *adapter = client->adapter;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
684 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
685 I2C_FUNC_SMBUS_WORD_DATA))
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200686 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687
688 /* Determine the chip type. */
Jean Delvare52df6442009-12-09 20:35:57 +0100689 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) ||
690 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) ||
691 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) {
692 dev_dbg(&client->dev, "Unknown chip type, skipping\n");
693 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 }
695
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200696 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200698 return 0;
699}
700
701static int gl520_probe(struct i2c_client *client,
702 const struct i2c_device_id *id)
703{
704 struct gl520_data *data;
705 int err;
706
707 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL);
708 if (!data) {
709 err = -ENOMEM;
710 goto exit;
711 }
712
713 i2c_set_clientdata(client, data);
714 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
716 /* Initialize the GL520SM chip */
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100717 gl520_init_client(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
719 /* Register sysfs hooks */
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100720 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200721 goto exit_free;
Jean Delvare87808be2006-09-24 21:17:13 +0200722
723 if (data->two_temps) {
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100724 if ((err = device_create_file(&client->dev,
Jean Delvare86d47f12007-11-04 23:45:14 +0100725 &sensor_dev_attr_temp2_input.dev_attr))
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100726 || (err = device_create_file(&client->dev,
Jean Delvare86d47f12007-11-04 23:45:14 +0100727 &sensor_dev_attr_temp2_max.dev_attr))
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100728 || (err = device_create_file(&client->dev,
Jean Delvaree86a7762007-11-04 23:45:41 +0100729 &sensor_dev_attr_temp2_max_hyst.dev_attr))
730 || (err = device_create_file(&client->dev,
731 &sensor_dev_attr_temp2_alarm.dev_attr))
732 || (err = device_create_file(&client->dev,
733 &sensor_dev_attr_temp2_beep.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +0200734 goto exit_remove_files;
735 } else {
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100736 if ((err = device_create_file(&client->dev,
Jean Delvare86d47f12007-11-04 23:45:14 +0100737 &sensor_dev_attr_in4_input.dev_attr))
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100738 || (err = device_create_file(&client->dev,
Jean Delvare86d47f12007-11-04 23:45:14 +0100739 &sensor_dev_attr_in4_min.dev_attr))
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100740 || (err = device_create_file(&client->dev,
Jean Delvaree86a7762007-11-04 23:45:41 +0100741 &sensor_dev_attr_in4_max.dev_attr))
742 || (err = device_create_file(&client->dev,
743 &sensor_dev_attr_in4_alarm.dev_attr))
744 || (err = device_create_file(&client->dev,
745 &sensor_dev_attr_in4_beep.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +0200746 goto exit_remove_files;
747 }
748
749
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100750 data->hwmon_dev = hwmon_device_register(&client->dev);
Tony Jones1beeffe2007-08-20 13:46:20 -0700751 if (IS_ERR(data->hwmon_dev)) {
752 err = PTR_ERR(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200753 goto exit_remove_files;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400754 }
755
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 return 0;
757
Jean Delvare87808be2006-09-24 21:17:13 +0200758exit_remove_files:
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100759 sysfs_remove_group(&client->dev.kobj, &gl520_group);
760 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761exit_free:
762 kfree(data);
763exit:
764 return err;
765}
766
767
768/* Called when we have found a new GL520SM. */
769static void gl520_init_client(struct i2c_client *client)
770{
771 struct gl520_data *data = i2c_get_clientdata(client);
772 u8 oldconf, conf;
773
774 conf = oldconf = gl520_read_value(client, GL520_REG_CONF);
775
776 data->alarm_mask = 0xff;
Jean Delvare303760b2005-07-31 21:52:01 +0200777 data->vrm = vid_which_vrm();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778
779 if (extra_sensor_type == 1)
780 conf &= ~0x10;
781 else if (extra_sensor_type == 2)
782 conf |= 0x10;
783 data->two_temps = !(conf & 0x10);
784
785 /* If IRQ# is disabled, we can safely force comparator mode */
786 if (!(conf & 0x20))
787 conf &= 0xf7;
788
789 /* Enable monitoring if needed */
790 conf |= 0x40;
791
792 if (conf != oldconf)
793 gl520_write_value(client, GL520_REG_CONF, conf);
794
795 gl520_update_device(&(client->dev));
796
797 if (data->fan_min[0] == 0)
798 data->alarm_mask &= ~0x20;
799 if (data->fan_min[1] == 0)
800 data->alarm_mask &= ~0x40;
801
802 data->beep_mask &= data->alarm_mask;
803 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
804}
805
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200806static int gl520_remove(struct i2c_client *client)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400808 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809
Tony Jones1beeffe2007-08-20 13:46:20 -0700810 hwmon_device_unregister(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200811 sysfs_remove_group(&client->dev.kobj, &gl520_group);
812 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400813
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400814 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 return 0;
816}
817
818
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100819/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 GL520 uses a high-byte first convention */
821static int gl520_read_value(struct i2c_client *client, u8 reg)
822{
823 if ((reg >= 0x07) && (reg <= 0x0c))
Jean Delvare90f41022011-11-04 12:00:47 +0100824 return i2c_smbus_read_word_swapped(client, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 else
826 return i2c_smbus_read_byte_data(client, reg);
827}
828
829static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
830{
831 if ((reg >= 0x07) && (reg <= 0x0c))
Jean Delvare90f41022011-11-04 12:00:47 +0100832 return i2c_smbus_write_word_swapped(client, reg, value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 else
834 return i2c_smbus_write_byte_data(client, reg, value);
835}
836
837
838static struct gl520_data *gl520_update_device(struct device *dev)
839{
840 struct i2c_client *client = to_i2c_client(dev);
841 struct gl520_data *data = i2c_get_clientdata(client);
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100842 int val, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100844 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845
Jean Delvare0cacdf22005-07-29 12:15:12 -0700846 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
848 dev_dbg(&client->dev, "Starting gl520sm update\n");
849
850 data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
851 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
852 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
853
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100854 for (i = 0; i < 4; i++) {
855 data->in_input[i] = gl520_read_value(client,
856 GL520_REG_IN_INPUT[i]);
857 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
858 data->in_min[i] = val & 0xff;
859 data->in_max[i] = (val >> 8) & 0xff;
860 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
862 val = gl520_read_value(client, GL520_REG_FAN_INPUT);
863 data->fan_input[0] = (val >> 8) & 0xff;
864 data->fan_input[1] = val & 0xff;
865
866 val = gl520_read_value(client, GL520_REG_FAN_MIN);
867 data->fan_min[0] = (val >> 8) & 0xff;
868 data->fan_min[1] = val & 0xff;
869
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100870 data->temp_input[0] = gl520_read_value(client,
871 GL520_REG_TEMP_INPUT[0]);
872 data->temp_max[0] = gl520_read_value(client,
873 GL520_REG_TEMP_MAX[0]);
874 data->temp_max_hyst[0] = gl520_read_value(client,
875 GL520_REG_TEMP_MAX_HYST[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
877 val = gl520_read_value(client, GL520_REG_FAN_DIV);
878 data->fan_div[0] = (val >> 6) & 0x03;
879 data->fan_div[1] = (val >> 4) & 0x03;
880 data->fan_off = (val >> 2) & 0x01;
881
882 data->alarms &= data->alarm_mask;
883
884 val = gl520_read_value(client, GL520_REG_CONF);
885 data->beep_enable = !((val >> 2) & 1);
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 /* Temp1 and Vin4 are the same input */
888 if (data->two_temps) {
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100889 data->temp_input[1] = gl520_read_value(client,
890 GL520_REG_TEMP_INPUT[1]);
891 data->temp_max[1] = gl520_read_value(client,
892 GL520_REG_TEMP_MAX[1]);
893 data->temp_max_hyst[1] = gl520_read_value(client,
894 GL520_REG_TEMP_MAX_HYST[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 } else {
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100896 data->in_input[4] = gl520_read_value(client,
897 GL520_REG_IN_INPUT[4]);
898 data->in_min[4] = gl520_read_value(client,
899 GL520_REG_IN_MIN[4]);
900 data->in_max[4] = gl520_read_value(client,
901 GL520_REG_IN_MAX[4]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 }
903
904 data->last_updated = jiffies;
905 data->valid = 1;
906 }
907
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100908 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909
910 return data;
911}
912
913
914static int __init sensors_gl520sm_init(void)
915{
916 return i2c_add_driver(&gl520_driver);
917}
918
919static void __exit sensors_gl520sm_exit(void)
920{
921 i2c_del_driver(&gl520_driver);
922}
923
924
925MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
Jan Engelhardt96de0e22007-10-19 23:21:04 +0200926 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
928MODULE_DESCRIPTION("GL520SM driver");
929MODULE_LICENSE("GPL");
930
931module_init(sensors_gl520sm_init);
932module_exit(sensors_gl520sm_exit);