blob: a21ff252f2f1b8cd6a14a898bf72fd36f9ce3465 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Guenter Roeck43da3d12012-01-14 13:34:52 -08002 * 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
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
Guenter Roeck43da3d12012-01-14 13:34:52 -080044/*
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
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
Jean Delvare8b4b0ab2007-11-04 23:44:52 +010058static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e };
59static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b };
60static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 };
61static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Jean Delvare8b4b0ab2007-11-04 23:44:52 +010063static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e };
64static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 };
65static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
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
Jean Delvarea23a9fe2008-07-16 19:30:13 +020080static int gl520_probe(struct i2c_client *client,
81 const struct i2c_device_id *id);
Jean Delvare310ec792009-12-14 21:17:23 +010082static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083static void gl520_init_client(struct i2c_client *client);
Jean Delvarea23a9fe2008-07-16 19:30:13 +020084static int gl520_remove(struct i2c_client *client);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085static int gl520_read_value(struct i2c_client *client, u8 reg);
86static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
87static struct gl520_data *gl520_update_device(struct device *dev);
88
89/* Driver data */
Jean Delvarea23a9fe2008-07-16 19:30:13 +020090static const struct i2c_device_id gl520_id[] = {
Jean Delvare1f86df42009-12-14 21:17:26 +010091 { "gl520sm", 0 },
Jean Delvarea23a9fe2008-07-16 19:30:13 +020092 { }
93};
94MODULE_DEVICE_TABLE(i2c, gl520_id);
95
Linus Torvalds1da177e2005-04-16 15:20:36 -070096static struct i2c_driver gl520_driver = {
Jean Delvarea23a9fe2008-07-16 19:30:13 +020097 .class = I2C_CLASS_HWMON,
Laurent Riffardcdaf7932005-11-26 20:37:41 +010098 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +010099 .name = "gl520sm",
100 },
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200101 .probe = gl520_probe,
102 .remove = gl520_remove,
103 .id_table = gl520_id,
104 .detect = gl520_detect,
Jean Delvarec3813d62009-12-14 21:17:25 +0100105 .address_list = normal_i2c,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106};
107
108/* Client data */
109struct gl520_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700110 struct device *hwmon_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100111 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 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
Jean Delvare86d47f12007-11-04 23:45:14 +0100138static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
139 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140{
Jean Delvare86d47f12007-11-04 23:45:14 +0100141 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
143}
Jean Delvare86d47f12007-11-04 23:45:14 +0100144static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
Guenter Roeck43da3d12012-01-14 13:34:52 -0800146#define VDD_FROM_REG(val) (((val) * 95 + 2) / 4)
147#define VDD_TO_REG(val) SENSORS_LIMIT((((val) * 4 + 47) / 95), 0, 255)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
Guenter Roeck43da3d12012-01-14 13:34:52 -0800149#define IN_FROM_REG(val) ((val) * 19)
150#define IN_TO_REG(val) SENSORS_LIMIT((((val) + 9) / 19), 0, 255)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
Jean Delvare86d47f12007-11-04 23:45:14 +0100152static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
153 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154{
Jean Delvare86d47f12007-11-04 23:45:14 +0100155 int n = to_sensor_dev_attr(attr)->index;
156 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 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
Jean Delvare86d47f12007-11-04 23:45:14 +0100165static ssize_t get_in_min(struct device *dev, struct device_attribute *attr,
166 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
Jean Delvare86d47f12007-11-04 23:45:14 +0100168 int n = to_sensor_dev_attr(attr)->index;
169 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 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
Jean Delvare86d47f12007-11-04 23:45:14 +0100178static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
179 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180{
Jean Delvare86d47f12007-11-04 23:45:14 +0100181 int n = to_sensor_dev_attr(attr)->index;
182 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 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
Jean Delvare86d47f12007-11-04 23:45:14 +0100191static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
192 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
Jean Delvare86d47f12007-11-04 23:45:14 +0100194 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 u8 r;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800198 long v;
199 int err;
200
201 err = kstrtol(buf, 10, &v);
202 if (err)
203 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100205 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
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)
Jean Delvare86d47f12007-11-04 23:45:14 +0100215 gl520_write_value(client, GL520_REG_IN_MIN[n],
216 (gl520_read_value(client, GL520_REG_IN_MIN[n])
217 & ~0xff) | r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100219 gl520_write_value(client, GL520_REG_IN_MIN[n], r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100221 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 return count;
223}
224
Jean Delvare86d47f12007-11-04 23:45:14 +0100225static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
226 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227{
Jean Delvare86d47f12007-11-04 23:45:14 +0100228 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 u8 r;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800232 long v;
233 int err;
234
235 err = kstrtol(buf, 10, &v);
236 if (err)
237 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
239 if (n == 0)
240 r = VDD_TO_REG(v);
241 else
242 r = IN_TO_REG(v);
243
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100244 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
246 data->in_max[n] = r;
247
248 if (n < 4)
Jean Delvare86d47f12007-11-04 23:45:14 +0100249 gl520_write_value(client, GL520_REG_IN_MAX[n],
250 (gl520_read_value(client, GL520_REG_IN_MAX[n])
251 & ~0xff00) | (r << 8));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100253 gl520_write_value(client, GL520_REG_IN_MAX[n], r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100255 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 return count;
257}
258
Jean Delvare86d47f12007-11-04 23:45:14 +0100259static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0);
260static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1);
261static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2);
262static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3);
263static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4);
264static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
265 get_in_min, set_in_min, 0);
266static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR,
267 get_in_min, set_in_min, 1);
268static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR,
269 get_in_min, set_in_min, 2);
270static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR,
271 get_in_min, set_in_min, 3);
272static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR,
273 get_in_min, set_in_min, 4);
274static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
275 get_in_max, set_in_max, 0);
276static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR,
277 get_in_max, set_in_max, 1);
278static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR,
279 get_in_max, set_in_max, 2);
280static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR,
281 get_in_max, set_in_max, 3);
282static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
283 get_in_max, set_in_max, 4);
284
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285#define DIV_FROM_REG(val) (1 << (val))
Guenter Roeck43da3d12012-01-14 13:34:52 -0800286#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))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Jean Delvare86d47f12007-11-04 23:45:14 +0100291static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
292 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Jean Delvare86d47f12007-11-04 23:45:14 +0100294 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299}
300
Jean Delvare86d47f12007-11-04 23:45:14 +0100301static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr,
302 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303{
Jean Delvare86d47f12007-11-04 23:45:14 +0100304 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309}
310
Jean Delvare86d47f12007-11-04 23:45:14 +0100311static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr,
312 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313{
Jean Delvare86d47f12007-11-04 23:45:14 +0100314 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318}
319
Jean Delvare86d47f12007-11-04 23:45:14 +0100320static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
321 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322{
Jean Delvare86d47f12007-11-04 23:45:14 +0100323 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 return sprintf(buf, "%d\n", data->fan_off);
325}
326
Jean Delvare86d47f12007-11-04 23:45:14 +0100327static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
328 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
Jean Delvare86d47f12007-11-04 23:45:14 +0100330 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 u8 r;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800334 unsigned long v;
335 int err;
336
337 err = kstrtoul(buf, 10, &v);
338 if (err)
339 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100341 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100342 r = FAN_TO_REG(v, data->fan_div[n]);
343 data->fan_min[n] = r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Jean Delvare86d47f12007-11-04 23:45:14 +0100345 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));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100350 gl520_write_value(client, GL520_REG_FAN_MIN,
351 (gl520_read_value(client, GL520_REG_FAN_MIN)
352 & ~0xff) | r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
354 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
Jean Delvare86d47f12007-11-04 23:45:14 +0100355 if (data->fan_min[n] == 0)
356 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100358 data->alarm_mask |= (n == 0) ? 0x20 : 0x40;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 data->beep_mask &= data->alarm_mask;
360 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
361
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100362 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 return count;
364}
365
Jean Delvare86d47f12007-11-04 23:45:14 +0100366static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
367 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368{
Jean Delvare86d47f12007-11-04 23:45:14 +0100369 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 u8 r;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800373 unsigned long v;
374 int err;
375
376 err = kstrtoul(buf, 10, &v);
377 if (err)
378 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
380 switch (v) {
Guenter Roeck43da3d12012-01-14 13:34:52 -0800381 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 default:
Guenter Roeck43da3d12012-01-14 13:34:52 -0800394 dev_err(&client->dev,
395 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 return -EINVAL;
397 }
398
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100399 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100400 data->fan_div[n] = r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Jean Delvare86d47f12007-11-04 23:45:14 +0100402 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));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 else
Jean Delvare86d47f12007-11-04 23:45:14 +0100407 gl520_write_value(client, GL520_REG_FAN_DIV,
408 (gl520_read_value(client, GL520_REG_FAN_DIV)
409 & ~0x30) | (r << 4));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100411 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 return count;
413}
414
Jean Delvare86d47f12007-11-04 23:45:14 +0100415static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
416 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
Jean Delvare86d47f12007-11-04 23:45:14 +0100418 struct i2c_client *client = to_i2c_client(dev);
419 struct gl520_data *data = i2c_get_clientdata(client);
Guenter Roeck43da3d12012-01-14 13:34:52 -0800420 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100430 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 data->fan_off = r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100432 gl520_write_value(client, GL520_REG_FAN_OFF,
433 (gl520_read_value(client, GL520_REG_FAN_OFF)
434 & ~0x0c) | (r << 2));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100435 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 return count;
437}
438
Jean Delvare86d47f12007-11-04 23:45:14 +0100439static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0);
440static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1);
441static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
442 get_fan_min, set_fan_min, 0);
443static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
444 get_fan_min, set_fan_min, 1);
445static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
446 get_fan_div, set_fan_div, 0);
447static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
448 get_fan_div, set_fan_div, 1);
449static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
450 get_fan_off, set_fan_off);
451
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
Guenter Roeck43da3d12012-01-14 13:34:52 -0800453#define TEMP_TO_REG(val) SENSORS_LIMIT(((((val) < 0 ? \
454 (val) - 500 : (val) + 500) / 1000) + 130), 0, 255)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
Jean Delvare86d47f12007-11-04 23:45:14 +0100456static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
457 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458{
Jean Delvare86d47f12007-11-04 23:45:14 +0100459 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463}
464
Jean Delvare86d47f12007-11-04 23:45:14 +0100465static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
466 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467{
Jean Delvare86d47f12007-11-04 23:45:14 +0100468 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472}
473
Guenter Roeck43da3d12012-01-14 13:34:52 -0800474static ssize_t get_temp_max_hyst(struct device *dev,
475 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476{
Jean Delvare86d47f12007-11-04 23:45:14 +0100477 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]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481}
482
Jean Delvare86d47f12007-11-04 23:45:14 +0100483static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
484 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485{
Jean Delvare86d47f12007-11-04 23:45:14 +0100486 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;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800489 long v;
490 int err;
491
492 err = kstrtol(buf, 10, &v);
493 if (err)
494 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100496 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100497 data->temp_max[n] = TEMP_TO_REG(v);
498 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100499 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 return count;
501}
502
Jean Delvare86d47f12007-11-04 23:45:14 +0100503static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
504 *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505{
Jean Delvare86d47f12007-11-04 23:45:14 +0100506 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;
Guenter Roeck43da3d12012-01-14 13:34:52 -0800509 long v;
510 int err;
511
512 err = kstrtol(buf, 10, &v);
513 if (err)
514 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100516 mutex_lock(&data->update_lock);
Jean Delvare86d47f12007-11-04 23:45:14 +0100517 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]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100520 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 return count;
522}
523
Jean Delvare86d47f12007-11-04 23:45:14 +0100524static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0);
525static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1);
526static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
527 get_temp_max, set_temp_max, 0);
528static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
529 get_temp_max, set_temp_max, 1);
530static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
531 get_temp_max_hyst, set_temp_max_hyst, 0);
532static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
533 get_temp_max_hyst, set_temp_max_hyst, 1);
534
535static ssize_t get_alarms(struct device *dev, struct device_attribute *attr,
536 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537{
Jean Delvare86d47f12007-11-04 23:45:14 +0100538 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 return sprintf(buf, "%d\n", data->alarms);
540}
541
Jean Delvare86d47f12007-11-04 23:45:14 +0100542static ssize_t get_beep_enable(struct device *dev, struct device_attribute
543 *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544{
Jean Delvare86d47f12007-11-04 23:45:14 +0100545 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 return sprintf(buf, "%d\n", data->beep_enable);
547}
548
Jean Delvare86d47f12007-11-04 23:45:14 +0100549static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
550 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551{
Jean Delvare86d47f12007-11-04 23:45:14 +0100552 struct gl520_data *data = gl520_update_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 return sprintf(buf, "%d\n", data->beep_mask);
554}
555
Jean Delvare86d47f12007-11-04 23:45:14 +0100556static ssize_t set_beep_enable(struct device *dev, struct device_attribute
557 *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558{
Jean Delvare86d47f12007-11-04 23:45:14 +0100559 struct i2c_client *client = to_i2c_client(dev);
560 struct gl520_data *data = i2c_get_clientdata(client);
Guenter Roeck43da3d12012-01-14 13:34:52 -0800561 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100571 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 data->beep_enable = !r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100573 gl520_write_value(client, GL520_REG_BEEP_ENABLE,
574 (gl520_read_value(client, GL520_REG_BEEP_ENABLE)
575 & ~0x04) | (r << 2));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100576 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 return count;
578}
579
Jean Delvare86d47f12007-11-04 23:45:14 +0100580static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
581 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582{
Jean Delvare86d47f12007-11-04 23:45:14 +0100583 struct i2c_client *client = to_i2c_client(dev);
584 struct gl520_data *data = i2c_get_clientdata(client);
Guenter Roeck43da3d12012-01-14 13:34:52 -0800585 unsigned long r;
586 int err;
587
588 err = kstrtoul(buf, 10, &r);
589 if (err)
590 return err;
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100591
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100592 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 r &= data->alarm_mask;
594 data->beep_mask = r;
Jean Delvare86d47f12007-11-04 23:45:14 +0100595 gl520_write_value(client, GL520_REG_BEEP_MASK, r);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100596 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 return count;
598}
599
Jean Delvare86d47f12007-11-04 23:45:14 +0100600static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
601static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
602 get_beep_enable, set_beep_enable);
603static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
604 get_beep_mask, set_beep_mask);
605
Jean Delvaree86a7762007-11-04 23:45:41 +0100606static 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
615static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0);
616static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1);
617static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2);
618static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3);
619static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4);
620static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5);
621static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6);
622static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7);
623static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7);
624
625static 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
634static 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
Guenter Roeck43da3d12012-01-14 13:34:52 -0800642 int err;
643
644 err = kstrtoul(buf, 10, &bit);
645 if (err)
646 return err;
Jean Delvaree86a7762007-11-04 23:45:41 +0100647 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
661static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0);
662static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1);
663static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2);
664static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3);
665static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4);
666static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5);
667static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6);
668static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
669static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7);
670
Jean Delvare87808be2006-09-24 21:17:13 +0200671static struct attribute *gl520_attributes[] = {
672 &dev_attr_cpu0_vid.attr,
673
Jean Delvare86d47f12007-11-04 23:45:14 +0100674 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100677 &sensor_dev_attr_in0_alarm.dev_attr.attr,
678 &sensor_dev_attr_in0_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100679 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100682 &sensor_dev_attr_in1_alarm.dev_attr.attr,
683 &sensor_dev_attr_in1_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100684 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100687 &sensor_dev_attr_in2_alarm.dev_attr.attr,
688 &sensor_dev_attr_in2_beep.dev_attr.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100689 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100692 &sensor_dev_attr_in3_alarm.dev_attr.attr,
693 &sensor_dev_attr_in3_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200694
Jean Delvare86d47f12007-11-04 23:45:14 +0100695 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100698 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
699 &sensor_dev_attr_fan1_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200700 &dev_attr_fan1_off.attr,
Jean Delvare86d47f12007-11-04 23:45:14 +0100701 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100704 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
705 &sensor_dev_attr_fan2_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200706
Jean Delvare86d47f12007-11-04 23:45:14 +0100707 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100710 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
711 &sensor_dev_attr_temp1_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200712
713 &dev_attr_alarms.attr,
714 &dev_attr_beep_enable.attr,
715 &dev_attr_beep_mask.attr,
716 NULL
717};
718
719static const struct attribute_group gl520_group = {
720 .attrs = gl520_attributes,
721};
722
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800723static struct attribute *gl520_attributes_in4[] = {
Jean Delvare86d47f12007-11-04 23:45:14 +0100724 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100727 &sensor_dev_attr_in4_alarm.dev_attr.attr,
728 &sensor_dev_attr_in4_beep.dev_attr.attr,
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800729 NULL
730};
Jean Delvare87808be2006-09-24 21:17:13 +0200731
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800732static struct attribute *gl520_attributes_temp2[] = {
Jean Delvare86d47f12007-11-04 23:45:14 +0100733 &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,
Jean Delvaree86a7762007-11-04 23:45:41 +0100736 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
737 &sensor_dev_attr_temp2_beep.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200738 NULL
739};
740
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800741static const struct attribute_group gl520_group_in4 = {
742 .attrs = gl520_attributes_in4,
743};
744
745static const struct attribute_group gl520_group_temp2 = {
746 .attrs = gl520_attributes_temp2,
Jean Delvare87808be2006-09-24 21:17:13 +0200747};
748
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749
750/*
751 * Real code
752 */
753
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200754/* Return 0 if detection is successful, -ENODEV otherwise */
Jean Delvare310ec792009-12-14 21:17:23 +0100755static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756{
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200757 struct i2c_adapter *adapter = client->adapter;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
759 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
760 I2C_FUNC_SMBUS_WORD_DATA))
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200761 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
763 /* Determine the chip type. */
Jean Delvare52df6442009-12-09 20:35:57 +0100764 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 }
770
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200771 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200773 return 0;
774}
775
776static int gl520_probe(struct i2c_client *client,
777 const struct i2c_device_id *id)
778{
779 struct gl520_data *data;
780 int err;
781
Guenter Roeck647ff512012-06-02 09:58:07 -0700782 data = devm_kzalloc(&client->dev, sizeof(struct gl520_data),
783 GFP_KERNEL);
784 if (!data)
785 return -ENOMEM;
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200786
787 i2c_set_clientdata(client, data);
788 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
790 /* Initialize the GL520SM chip */
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100791 gl520_init_client(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
793 /* Register sysfs hooks */
Guenter Roeck43da3d12012-01-14 13:34:52 -0800794 err = sysfs_create_group(&client->dev.kobj, &gl520_group);
795 if (err)
Guenter Roeck647ff512012-06-02 09:58:07 -0700796 return err;
Jean Delvare87808be2006-09-24 21:17:13 +0200797
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800798 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);
Jean Delvare87808be2006-09-24 21:17:13 +0200802
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800803 if (err)
804 goto exit_remove_files;
Jean Delvare87808be2006-09-24 21:17:13 +0200805
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100806 data->hwmon_dev = hwmon_device_register(&client->dev);
Tony Jones1beeffe2007-08-20 13:46:20 -0700807 if (IS_ERR(data->hwmon_dev)) {
808 err = PTR_ERR(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200809 goto exit_remove_files;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400810 }
811
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 return 0;
813
Jean Delvare87808be2006-09-24 21:17:13 +0200814exit_remove_files:
Jean Delvaref28dc2f2007-11-04 23:44:23 +0100815 sysfs_remove_group(&client->dev.kobj, &gl520_group);
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800816 sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
817 sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 return err;
819}
820
821
822/* Called when we have found a new GL520SM. */
823static 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;
Jean Delvare303760b2005-07-31 21:52:01 +0200831 data->vrm = vid_which_vrm();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832
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
Jean Delvarea23a9fe2008-07-16 19:30:13 +0200860static int gl520_remove(struct i2c_client *client)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400862 struct gl520_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
Tony Jones1beeffe2007-08-20 13:46:20 -0700864 hwmon_device_unregister(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200865 sysfs_remove_group(&client->dev.kobj, &gl520_group);
Guenter Roeckf445a9a2012-01-16 16:56:23 -0800866 sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
867 sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400868
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 return 0;
870}
871
872
Guenter Roeck43da3d12012-01-14 13:34:52 -0800873/*
874 * Registers 0x07 to 0x0c are word-sized, others are byte-sized
875 * GL520 uses a high-byte first convention
876 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877static int gl520_read_value(struct i2c_client *client, u8 reg)
878{
879 if ((reg >= 0x07) && (reg <= 0x0c))
Jean Delvare90f41022011-11-04 12:00:47 +0100880 return i2c_smbus_read_word_swapped(client, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 else
882 return i2c_smbus_read_byte_data(client, reg);
883}
884
885static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
886{
887 if ((reg >= 0x07) && (reg <= 0x0c))
Jean Delvare90f41022011-11-04 12:00:47 +0100888 return i2c_smbus_write_word_swapped(client, reg, value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 else
890 return i2c_smbus_write_byte_data(client, reg, value);
891}
892
893
894static 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);
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100898 int val, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100900 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901
Jean Delvare0cacdf22005-07-29 12:15:12 -0700902 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
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);
Guenter Roeck43da3d12012-01-14 13:34:52 -0800908 data->vid = gl520_read_value(client,
909 GL520_REG_VID_INPUT) & 0x1f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100911 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918
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
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100927 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]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 /* Temp1 and Vin4 are the same input */
945 if (data->two_temps) {
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100946 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]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 } else {
Jean Delvare8b4b0ab2007-11-04 23:44:52 +0100953 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]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959 }
960
961 data->last_updated = jiffies;
962 data->valid = 1;
963 }
964
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100965 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
967 return data;
968}
969
Axel Linf0967ee2012-01-20 15:38:18 +0800970module_i2c_driver(gl520_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971
972MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
Jan Engelhardt96de0e22007-10-19 23:21:04 +0200973 "Kyösti Mälkki <kmalkki@cc.hut.fi>, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 "Maarten Deprez <maartendeprez@users.sourceforge.net>");
975MODULE_DESCRIPTION("GL520SM driver");
976MODULE_LICENSE("GPL");