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Grant Coady40b5cda2005-04-30 21:41:29 +10001/*
2 * adm9240.c Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring
4 *
5 * Copyright (C) 1999 Frodo Looijaard <frodol@dds.nl>
6 * Philip Edelbrock <phil@netroedge.com>
7 * Copyright (C) 2003 Michiel Rook <michiel@grendelproject.nl>
Grant Coady2ca7b962006-10-08 21:57:41 +02008 * Copyright (C) 2005 Grant Coady <gcoady.lk@gmail.com> with valuable
Grant Coady40b5cda2005-04-30 21:41:29 +10009 * guidance from Jean Delvare
10 *
11 * Driver supports Analog Devices ADM9240
12 * Dallas Semiconductor DS1780
13 * National Semiconductor LM81
14 *
15 * ADM9240 is the reference, DS1780 and LM81 are register compatibles
16 *
17 * Voltage Six inputs are scaled by chip, VID also reported
18 * Temperature Chip temperature to 0.5'C, maximum and max_hysteris
19 * Fans 2 fans, low speed alarm, automatic fan clock divider
20 * Alarms 16-bit map of active alarms
21 * Analog Out 0..1250 mV output
22 *
Jean Delvare0de2b242011-01-12 21:55:09 +010023 * Chassis Intrusion: clear CI latch with 'echo 0 > intrusion0_alarm'
Grant Coady40b5cda2005-04-30 21:41:29 +100024 *
25 * Test hardware: Intel SE440BX-2 desktop motherboard --Grant
26 *
27 * LM81 extended temp reading not implemented
28 *
29 * This program is free software; you can redistribute it and/or modify
30 * it under the terms of the GNU General Public License as published by
31 * the Free Software Foundation; either version 2 of the License, or
32 * (at your option) any later version.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
42 */
43
44#include <linux/init.h>
45#include <linux/module.h>
46#include <linux/slab.h>
47#include <linux/i2c.h>
Grant Coadyc7461a62005-09-17 05:32:57 +100048#include <linux/hwmon-sysfs.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040049#include <linux/hwmon.h>
Jean Delvare303760b2005-07-31 21:52:01 +020050#include <linux/hwmon-vid.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040051#include <linux/err.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010052#include <linux/mutex.h>
Grant Coady40b5cda2005-04-30 21:41:29 +100053
54/* Addresses to scan */
Mark M. Hoffman25e9c862008-02-17 22:28:03 -050055static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
Grant Coady40b5cda2005-04-30 21:41:29 +100056 I2C_CLIENT_END };
57
Jean Delvaree5e9f442009-12-14 21:17:27 +010058enum chips { adm9240, ds1780, lm81 };
Grant Coady40b5cda2005-04-30 21:41:29 +100059
60/* ADM9240 registers */
61#define ADM9240_REG_MAN_ID 0x3e
62#define ADM9240_REG_DIE_REV 0x3f
63#define ADM9240_REG_CONFIG 0x40
64
65#define ADM9240_REG_IN(nr) (0x20 + (nr)) /* 0..5 */
66#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2)
67#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2)
68#define ADM9240_REG_FAN(nr) (0x28 + (nr)) /* 0..1 */
69#define ADM9240_REG_FAN_MIN(nr) (0x3b + (nr))
70#define ADM9240_REG_INT(nr) (0x41 + (nr))
71#define ADM9240_REG_INT_MASK(nr) (0x43 + (nr))
72#define ADM9240_REG_TEMP 0x27
Grant Coadyc7461a62005-09-17 05:32:57 +100073#define ADM9240_REG_TEMP_MAX(nr) (0x39 + (nr)) /* 0, 1 = high, hyst */
Grant Coady40b5cda2005-04-30 21:41:29 +100074#define ADM9240_REG_ANALOG_OUT 0x19
75#define ADM9240_REG_CHASSIS_CLEAR 0x46
76#define ADM9240_REG_VID_FAN_DIV 0x47
77#define ADM9240_REG_I2C_ADDR 0x48
78#define ADM9240_REG_VID4 0x49
79#define ADM9240_REG_TEMP_CONF 0x4b
80
81/* generalised scaling with integer rounding */
82static inline int SCALE(long val, int mul, int div)
83{
84 if (val < 0)
85 return (val * mul - div / 2) / div;
86 else
87 return (val * mul + div / 2) / div;
88}
89
90/* adm9240 internally scales voltage measurements */
91static const u16 nom_mv[] = { 2500, 2700, 3300, 5000, 12000, 2700 };
92
93static inline unsigned int IN_FROM_REG(u8 reg, int n)
94{
95 return SCALE(reg, nom_mv[n], 192);
96}
97
98static inline u8 IN_TO_REG(unsigned long val, int n)
99{
100 return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
101}
102
103/* temperature range: -40..125, 127 disables temperature alarm */
104static inline s8 TEMP_TO_REG(long val)
105{
106 return SENSORS_LIMIT(SCALE(val, 1, 1000), -40, 127);
107}
108
109/* two fans, each with low fan speed limit */
110static inline unsigned int FAN_FROM_REG(u8 reg, u8 div)
111{
112 if (!reg) /* error */
113 return -1;
114
115 if (reg == 255)
116 return 0;
117
118 return SCALE(1350000, 1, reg * div);
119}
120
121/* analog out 0..1250mV */
122static inline u8 AOUT_TO_REG(unsigned long val)
123{
124 return SENSORS_LIMIT(SCALE(val, 255, 1250), 0, 255);
125}
126
127static inline unsigned int AOUT_FROM_REG(u8 reg)
128{
129 return SCALE(reg, 1250, 255);
130}
131
Jean Delvare7fae8282008-07-16 19:30:09 +0200132static int adm9240_probe(struct i2c_client *client,
133 const struct i2c_device_id *id);
Jean Delvare310ec792009-12-14 21:17:23 +0100134static int adm9240_detect(struct i2c_client *client,
Jean Delvare7fae8282008-07-16 19:30:09 +0200135 struct i2c_board_info *info);
Grant Coady40b5cda2005-04-30 21:41:29 +1000136static void adm9240_init_client(struct i2c_client *client);
Jean Delvare7fae8282008-07-16 19:30:09 +0200137static int adm9240_remove(struct i2c_client *client);
Grant Coady40b5cda2005-04-30 21:41:29 +1000138static struct adm9240_data *adm9240_update_device(struct device *dev);
139
140/* driver data */
Jean Delvare7fae8282008-07-16 19:30:09 +0200141static const struct i2c_device_id adm9240_id[] = {
142 { "adm9240", adm9240 },
143 { "ds1780", ds1780 },
144 { "lm81", lm81 },
145 { }
146};
147MODULE_DEVICE_TABLE(i2c, adm9240_id);
148
Grant Coady40b5cda2005-04-30 21:41:29 +1000149static struct i2c_driver adm9240_driver = {
Jean Delvare7fae8282008-07-16 19:30:09 +0200150 .class = I2C_CLASS_HWMON,
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100151 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100152 .name = "adm9240",
153 },
Jean Delvare7fae8282008-07-16 19:30:09 +0200154 .probe = adm9240_probe,
155 .remove = adm9240_remove,
156 .id_table = adm9240_id,
157 .detect = adm9240_detect,
Jean Delvarec3813d62009-12-14 21:17:25 +0100158 .address_list = normal_i2c,
Grant Coady40b5cda2005-04-30 21:41:29 +1000159};
160
161/* per client data */
162struct adm9240_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700163 struct device *hwmon_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100164 struct mutex update_lock;
Grant Coady40b5cda2005-04-30 21:41:29 +1000165 char valid;
166 unsigned long last_updated_measure;
167 unsigned long last_updated_config;
168
169 u8 in[6]; /* ro in0_input */
170 u8 in_max[6]; /* rw in0_max */
171 u8 in_min[6]; /* rw in0_min */
172 u8 fan[2]; /* ro fan1_input */
173 u8 fan_min[2]; /* rw fan1_min */
174 u8 fan_div[2]; /* rw fan1_div, read-only accessor */
175 s16 temp; /* ro temp1_input, 9-bit sign-extended */
Grant Coadyc7461a62005-09-17 05:32:57 +1000176 s8 temp_max[2]; /* rw 0 -> temp_max, 1 -> temp_max_hyst */
Grant Coady40b5cda2005-04-30 21:41:29 +1000177 u16 alarms; /* ro alarms */
Grant Coady8e8f9282005-05-13 20:26:10 +1000178 u8 aout; /* rw aout_output */
Grant Coady40b5cda2005-04-30 21:41:29 +1000179 u8 vid; /* ro vid */
180 u8 vrm; /* -- vrm set on startup, no accessor */
181};
182
Grant Coady40b5cda2005-04-30 21:41:29 +1000183/*** sysfs accessors ***/
184
185/* temperature */
Grant Coadyc7461a62005-09-17 05:32:57 +1000186static ssize_t show_temp(struct device *dev, struct device_attribute *dummy,
187 char *buf)
188{
189 struct adm9240_data *data = adm9240_update_device(dev);
190 return sprintf(buf, "%d\n", data->temp * 500); /* 9-bit value */
Grant Coady40b5cda2005-04-30 21:41:29 +1000191}
192
Grant Coadyc7461a62005-09-17 05:32:57 +1000193static ssize_t show_max(struct device *dev, struct device_attribute *devattr,
194 char *buf)
195{
196 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
197 struct adm9240_data *data = adm9240_update_device(dev);
198 return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000);
199}
Grant Coady40b5cda2005-04-30 21:41:29 +1000200
Grant Coadyc7461a62005-09-17 05:32:57 +1000201static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
202 const char *buf, size_t count)
203{
204 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
205 struct i2c_client *client = to_i2c_client(dev);
206 struct adm9240_data *data = i2c_get_clientdata(client);
207 long val = simple_strtol(buf, NULL, 10);
208
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100209 mutex_lock(&data->update_lock);
Grant Coadyc7461a62005-09-17 05:32:57 +1000210 data->temp_max[attr->index] = TEMP_TO_REG(val);
211 i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index),
212 data->temp_max[attr->index]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100213 mutex_unlock(&data->update_lock);
Grant Coadyc7461a62005-09-17 05:32:57 +1000214 return count;
215}
216
Grant Coady40b5cda2005-04-30 21:41:29 +1000217static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
Grant Coadyc7461a62005-09-17 05:32:57 +1000218static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
219 show_max, set_max, 0);
220static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
221 show_max, set_max, 1);
Grant Coady40b5cda2005-04-30 21:41:29 +1000222
223/* voltage */
Grant Coadyc7461a62005-09-17 05:32:57 +1000224static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
225 char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000226{
Grant Coadyc7461a62005-09-17 05:32:57 +1000227 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000228 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000229 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index],
230 attr->index));
Grant Coady40b5cda2005-04-30 21:41:29 +1000231}
232
Jean Delvaree415e482005-09-25 16:14:18 +0200233static ssize_t show_in_min(struct device *dev,
234 struct device_attribute *devattr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000235{
Grant Coadyc7461a62005-09-17 05:32:57 +1000236 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000237 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000238 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index],
239 attr->index));
Grant Coady40b5cda2005-04-30 21:41:29 +1000240}
241
Jean Delvaree415e482005-09-25 16:14:18 +0200242static ssize_t show_in_max(struct device *dev,
243 struct device_attribute *devattr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000244{
Grant Coadyc7461a62005-09-17 05:32:57 +1000245 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000246 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000247 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index],
248 attr->index));
Grant Coady40b5cda2005-04-30 21:41:29 +1000249}
250
Jean Delvaree415e482005-09-25 16:14:18 +0200251static ssize_t set_in_min(struct device *dev,
252 struct device_attribute *devattr,
Grant Coadyc7461a62005-09-17 05:32:57 +1000253 const char *buf, size_t count)
Grant Coady40b5cda2005-04-30 21:41:29 +1000254{
Grant Coadyc7461a62005-09-17 05:32:57 +1000255 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000256 struct i2c_client *client = to_i2c_client(dev);
257 struct adm9240_data *data = i2c_get_clientdata(client);
258 unsigned long val = simple_strtoul(buf, NULL, 10);
259
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100260 mutex_lock(&data->update_lock);
Grant Coadyc7461a62005-09-17 05:32:57 +1000261 data->in_min[attr->index] = IN_TO_REG(val, attr->index);
262 i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index),
263 data->in_min[attr->index]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100264 mutex_unlock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000265 return count;
266}
267
Jean Delvaree415e482005-09-25 16:14:18 +0200268static ssize_t set_in_max(struct device *dev,
269 struct device_attribute *devattr,
Grant Coadyc7461a62005-09-17 05:32:57 +1000270 const char *buf, size_t count)
Grant Coady40b5cda2005-04-30 21:41:29 +1000271{
Grant Coadyc7461a62005-09-17 05:32:57 +1000272 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000273 struct i2c_client *client = to_i2c_client(dev);
274 struct adm9240_data *data = i2c_get_clientdata(client);
275 unsigned long val = simple_strtoul(buf, NULL, 10);
276
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100277 mutex_lock(&data->update_lock);
Grant Coadyc7461a62005-09-17 05:32:57 +1000278 data->in_max[attr->index] = IN_TO_REG(val, attr->index);
279 i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index),
280 data->in_max[attr->index]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100281 mutex_unlock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000282 return count;
283}
284
Grant Coadyc7461a62005-09-17 05:32:57 +1000285#define vin(nr) \
286static SENSOR_DEVICE_ATTR(in##nr##_input, S_IRUGO, \
287 show_in, NULL, nr); \
288static SENSOR_DEVICE_ATTR(in##nr##_min, S_IRUGO | S_IWUSR, \
289 show_in_min, set_in_min, nr); \
290static SENSOR_DEVICE_ATTR(in##nr##_max, S_IRUGO | S_IWUSR, \
291 show_in_max, set_in_max, nr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000292
Grant Coadyc7461a62005-09-17 05:32:57 +1000293vin(0);
294vin(1);
295vin(2);
296vin(3);
297vin(4);
298vin(5);
Grant Coady40b5cda2005-04-30 21:41:29 +1000299
300/* fans */
Grant Coadyc7461a62005-09-17 05:32:57 +1000301static ssize_t show_fan(struct device *dev,
302 struct device_attribute *devattr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000303{
Grant Coadyc7461a62005-09-17 05:32:57 +1000304 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000305 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000306 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
307 1 << data->fan_div[attr->index]));
Grant Coady40b5cda2005-04-30 21:41:29 +1000308}
309
Grant Coadyc7461a62005-09-17 05:32:57 +1000310static ssize_t show_fan_min(struct device *dev,
311 struct device_attribute *devattr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000312{
Grant Coadyc7461a62005-09-17 05:32:57 +1000313 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000314 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000315 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index],
316 1 << data->fan_div[attr->index]));
Grant Coady40b5cda2005-04-30 21:41:29 +1000317}
318
Grant Coadyc7461a62005-09-17 05:32:57 +1000319static ssize_t show_fan_div(struct device *dev,
320 struct device_attribute *devattr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000321{
Grant Coadyc7461a62005-09-17 05:32:57 +1000322 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000323 struct adm9240_data *data = adm9240_update_device(dev);
Grant Coadyc7461a62005-09-17 05:32:57 +1000324 return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
Grant Coady40b5cda2005-04-30 21:41:29 +1000325}
326
327/* write new fan div, callers must hold data->update_lock */
328static void adm9240_write_fan_div(struct i2c_client *client, int nr,
329 u8 fan_div)
330{
331 u8 reg, old, shift = (nr + 2) * 2;
332
Grant Coady205cf132005-09-17 05:32:55 +1000333 reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
Grant Coady40b5cda2005-04-30 21:41:29 +1000334 old = (reg >> shift) & 3;
335 reg &= ~(3 << shift);
336 reg |= (fan_div << shift);
Grant Coady205cf132005-09-17 05:32:55 +1000337 i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
Grant Coady40b5cda2005-04-30 21:41:29 +1000338 dev_dbg(&client->dev, "fan%d clock divider changed from %u "
339 "to %u\n", nr + 1, 1 << old, 1 << fan_div);
340}
341
Jean Delvaree415e482005-09-25 16:14:18 +0200342/*
Grant Coady40b5cda2005-04-30 21:41:29 +1000343 * set fan speed low limit:
344 *
345 * - value is zero: disable fan speed low limit alarm
346 *
347 * - value is below fan speed measurement range: enable fan speed low
348 * limit alarm to be asserted while fan speed too slow to measure
349 *
350 * - otherwise: select fan clock divider to suit fan speed low limit,
351 * measurement code may adjust registers to ensure fan speed reading
352 */
Grant Coadyc7461a62005-09-17 05:32:57 +1000353static ssize_t set_fan_min(struct device *dev,
354 struct device_attribute *devattr,
355 const char *buf, size_t count)
Grant Coady40b5cda2005-04-30 21:41:29 +1000356{
Grant Coadyc7461a62005-09-17 05:32:57 +1000357 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Grant Coady40b5cda2005-04-30 21:41:29 +1000358 struct i2c_client *client = to_i2c_client(dev);
359 struct adm9240_data *data = i2c_get_clientdata(client);
360 unsigned long val = simple_strtoul(buf, NULL, 10);
Grant Coadyc7461a62005-09-17 05:32:57 +1000361 int nr = attr->index;
Grant Coady40b5cda2005-04-30 21:41:29 +1000362 u8 new_div;
363
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100364 mutex_lock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000365
366 if (!val) {
367 data->fan_min[nr] = 255;
368 new_div = data->fan_div[nr];
369
370 dev_dbg(&client->dev, "fan%u low limit set disabled\n",
371 nr + 1);
372
373 } else if (val < 1350000 / (8 * 254)) {
374 new_div = 3;
375 data->fan_min[nr] = 254;
376
377 dev_dbg(&client->dev, "fan%u low limit set minimum %u\n",
378 nr + 1, FAN_FROM_REG(254, 1 << new_div));
379
380 } else {
381 unsigned int new_min = 1350000 / val;
382
383 new_div = 0;
384 while (new_min > 192 && new_div < 3) {
385 new_div++;
386 new_min /= 2;
387 }
388 if (!new_min) /* keep > 0 */
389 new_min++;
390
391 data->fan_min[nr] = new_min;
392
393 dev_dbg(&client->dev, "fan%u low limit set fan speed %u\n",
394 nr + 1, FAN_FROM_REG(new_min, 1 << new_div));
395 }
396
397 if (new_div != data->fan_div[nr]) {
398 data->fan_div[nr] = new_div;
399 adm9240_write_fan_div(client, nr, new_div);
400 }
Grant Coady205cf132005-09-17 05:32:55 +1000401 i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr),
Grant Coady40b5cda2005-04-30 21:41:29 +1000402 data->fan_min[nr]);
403
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100404 mutex_unlock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000405 return count;
406}
407
Grant Coadyc7461a62005-09-17 05:32:57 +1000408#define fan(nr) \
409static SENSOR_DEVICE_ATTR(fan##nr##_input, S_IRUGO, \
410 show_fan, NULL, nr - 1); \
411static SENSOR_DEVICE_ATTR(fan##nr##_div, S_IRUGO, \
412 show_fan_div, NULL, nr - 1); \
413static SENSOR_DEVICE_ATTR(fan##nr##_min, S_IRUGO | S_IWUSR, \
414 show_fan_min, set_fan_min, nr - 1);
Grant Coady40b5cda2005-04-30 21:41:29 +1000415
Grant Coadyc7461a62005-09-17 05:32:57 +1000416fan(1);
417fan(2);
Grant Coady40b5cda2005-04-30 21:41:29 +1000418
419/* alarms */
Jean Delvaree415e482005-09-25 16:14:18 +0200420static ssize_t show_alarms(struct device *dev,
421 struct device_attribute *attr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000422{
423 struct adm9240_data *data = adm9240_update_device(dev);
424 return sprintf(buf, "%u\n", data->alarms);
425}
426static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
427
Jean Delvare360f9452008-01-06 15:49:19 +0100428static ssize_t show_alarm(struct device *dev,
429 struct device_attribute *attr, char *buf)
430{
431 int bitnr = to_sensor_dev_attr(attr)->index;
432 struct adm9240_data *data = adm9240_update_device(dev);
433 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
434}
435static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
436static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
437static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
438static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
439static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
440static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
441static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
442static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
443static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
444
Grant Coady40b5cda2005-04-30 21:41:29 +1000445/* vid */
Jean Delvaree415e482005-09-25 16:14:18 +0200446static ssize_t show_vid(struct device *dev,
447 struct device_attribute *attr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000448{
449 struct adm9240_data *data = adm9240_update_device(dev);
450 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
451}
452static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
453
454/* analog output */
Jean Delvaree415e482005-09-25 16:14:18 +0200455static ssize_t show_aout(struct device *dev,
456 struct device_attribute *attr, char *buf)
Grant Coady40b5cda2005-04-30 21:41:29 +1000457{
458 struct adm9240_data *data = adm9240_update_device(dev);
459 return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
460}
461
Jean Delvaree415e482005-09-25 16:14:18 +0200462static ssize_t set_aout(struct device *dev,
463 struct device_attribute *attr,
464 const char *buf, size_t count)
Grant Coady40b5cda2005-04-30 21:41:29 +1000465{
466 struct i2c_client *client = to_i2c_client(dev);
467 struct adm9240_data *data = i2c_get_clientdata(client);
468 unsigned long val = simple_strtol(buf, NULL, 10);
469
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100470 mutex_lock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000471 data->aout = AOUT_TO_REG(val);
Grant Coady205cf132005-09-17 05:32:55 +1000472 i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100473 mutex_unlock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000474 return count;
475}
476static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
477
478/* chassis_clear */
Jean Delvare0de2b242011-01-12 21:55:09 +0100479static ssize_t chassis_clear_legacy(struct device *dev,
Jean Delvaree415e482005-09-25 16:14:18 +0200480 struct device_attribute *attr,
481 const char *buf, size_t count)
Grant Coady40b5cda2005-04-30 21:41:29 +1000482{
483 struct i2c_client *client = to_i2c_client(dev);
484 unsigned long val = simple_strtol(buf, NULL, 10);
485
Jean Delvare0de2b242011-01-12 21:55:09 +0100486 dev_warn(dev, "Attribute chassis_clear is deprecated, "
487 "use intrusion0_alarm instead\n");
488
Grant Coady40b5cda2005-04-30 21:41:29 +1000489 if (val == 1) {
Grant Coady205cf132005-09-17 05:32:55 +1000490 i2c_smbus_write_byte_data(client,
491 ADM9240_REG_CHASSIS_CLEAR, 0x80);
Grant Coady40b5cda2005-04-30 21:41:29 +1000492 dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
493 }
494 return count;
495}
Jean Delvare0de2b242011-01-12 21:55:09 +0100496static DEVICE_ATTR(chassis_clear, S_IWUSR, NULL, chassis_clear_legacy);
497
498static ssize_t chassis_clear(struct device *dev,
499 struct device_attribute *attr,
500 const char *buf, size_t count)
501{
502 struct i2c_client *client = to_i2c_client(dev);
503 struct adm9240_data *data = i2c_get_clientdata(client);
504 unsigned long val;
505
Frans Meulenbroeks179c4fd2012-01-04 20:58:52 +0100506 if (kstrtoul(buf, 10, &val) || val != 0)
Jean Delvare0de2b242011-01-12 21:55:09 +0100507 return -EINVAL;
508
509 mutex_lock(&data->update_lock);
510 i2c_smbus_write_byte_data(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
511 data->valid = 0; /* Force cache refresh */
512 mutex_unlock(&data->update_lock);
513 dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
514
515 return count;
516}
517static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, show_alarm,
518 chassis_clear, 12);
Grant Coady40b5cda2005-04-30 21:41:29 +1000519
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200520static struct attribute *adm9240_attributes[] = {
521 &sensor_dev_attr_in0_input.dev_attr.attr,
522 &sensor_dev_attr_in0_min.dev_attr.attr,
523 &sensor_dev_attr_in0_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100524 &sensor_dev_attr_in0_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200525 &sensor_dev_attr_in1_input.dev_attr.attr,
526 &sensor_dev_attr_in1_min.dev_attr.attr,
527 &sensor_dev_attr_in1_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100528 &sensor_dev_attr_in1_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200529 &sensor_dev_attr_in2_input.dev_attr.attr,
530 &sensor_dev_attr_in2_min.dev_attr.attr,
531 &sensor_dev_attr_in2_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100532 &sensor_dev_attr_in2_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200533 &sensor_dev_attr_in3_input.dev_attr.attr,
534 &sensor_dev_attr_in3_min.dev_attr.attr,
535 &sensor_dev_attr_in3_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100536 &sensor_dev_attr_in3_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200537 &sensor_dev_attr_in4_input.dev_attr.attr,
538 &sensor_dev_attr_in4_min.dev_attr.attr,
539 &sensor_dev_attr_in4_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100540 &sensor_dev_attr_in4_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200541 &sensor_dev_attr_in5_input.dev_attr.attr,
542 &sensor_dev_attr_in5_min.dev_attr.attr,
543 &sensor_dev_attr_in5_max.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100544 &sensor_dev_attr_in5_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200545 &dev_attr_temp1_input.attr,
546 &sensor_dev_attr_temp1_max.dev_attr.attr,
547 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100548 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200549 &sensor_dev_attr_fan1_input.dev_attr.attr,
550 &sensor_dev_attr_fan1_div.dev_attr.attr,
551 &sensor_dev_attr_fan1_min.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100552 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200553 &sensor_dev_attr_fan2_input.dev_attr.attr,
554 &sensor_dev_attr_fan2_div.dev_attr.attr,
555 &sensor_dev_attr_fan2_min.dev_attr.attr,
Jean Delvare360f9452008-01-06 15:49:19 +0100556 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200557 &dev_attr_alarms.attr,
558 &dev_attr_aout_output.attr,
559 &dev_attr_chassis_clear.attr,
Jean Delvare0de2b242011-01-12 21:55:09 +0100560 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200561 &dev_attr_cpu0_vid.attr,
562 NULL
563};
564
565static const struct attribute_group adm9240_group = {
566 .attrs = adm9240_attributes,
567};
568
Grant Coady40b5cda2005-04-30 21:41:29 +1000569
570/*** sensor chip detect and driver install ***/
571
Jean Delvare7fae8282008-07-16 19:30:09 +0200572/* Return 0 if detection is successful, -ENODEV otherwise */
Jean Delvare310ec792009-12-14 21:17:23 +0100573static int adm9240_detect(struct i2c_client *new_client,
Jean Delvare7fae8282008-07-16 19:30:09 +0200574 struct i2c_board_info *info)
Grant Coady40b5cda2005-04-30 21:41:29 +1000575{
Jean Delvare7fae8282008-07-16 19:30:09 +0200576 struct i2c_adapter *adapter = new_client->adapter;
Grant Coady40b5cda2005-04-30 21:41:29 +1000577 const char *name = "";
Jean Delvare7fae8282008-07-16 19:30:09 +0200578 int address = new_client->addr;
Grant Coady40b5cda2005-04-30 21:41:29 +1000579 u8 man_id, die_rev;
580
581 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
Jean Delvare7fae8282008-07-16 19:30:09 +0200582 return -ENODEV;
Grant Coady40b5cda2005-04-30 21:41:29 +1000583
Jean Delvare52df6442009-12-09 20:35:57 +0100584 /* verify chip: reg address should match i2c address */
585 if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
586 != address) {
587 dev_err(&adapter->dev, "detect fail: address match, 0x%02x\n",
588 address);
589 return -ENODEV;
Grant Coady40b5cda2005-04-30 21:41:29 +1000590 }
591
Jean Delvare52df6442009-12-09 20:35:57 +0100592 /* check known chip manufacturer */
593 man_id = i2c_smbus_read_byte_data(new_client, ADM9240_REG_MAN_ID);
594 if (man_id == 0x23) {
Grant Coady40b5cda2005-04-30 21:41:29 +1000595 name = "adm9240";
Jean Delvare52df6442009-12-09 20:35:57 +0100596 } else if (man_id == 0xda) {
Grant Coady40b5cda2005-04-30 21:41:29 +1000597 name = "ds1780";
Jean Delvare52df6442009-12-09 20:35:57 +0100598 } else if (man_id == 0x01) {
Grant Coady40b5cda2005-04-30 21:41:29 +1000599 name = "lm81";
Jean Delvare52df6442009-12-09 20:35:57 +0100600 } else {
601 dev_err(&adapter->dev, "detect fail: unknown manuf, 0x%02x\n",
602 man_id);
603 return -ENODEV;
Grant Coady40b5cda2005-04-30 21:41:29 +1000604 }
Jean Delvare52df6442009-12-09 20:35:57 +0100605
606 /* successful detect, print chip info */
607 die_rev = i2c_smbus_read_byte_data(new_client, ADM9240_REG_DIE_REV);
608 dev_info(&adapter->dev, "found %s revision %u\n",
609 man_id == 0x23 ? "ADM9240" :
610 man_id == 0xda ? "DS1780" : "LM81", die_rev);
611
Jean Delvare7fae8282008-07-16 19:30:09 +0200612 strlcpy(info->type, name, I2C_NAME_SIZE);
Grant Coady40b5cda2005-04-30 21:41:29 +1000613
Jean Delvare7fae8282008-07-16 19:30:09 +0200614 return 0;
615}
616
617static int adm9240_probe(struct i2c_client *new_client,
618 const struct i2c_device_id *id)
619{
620 struct adm9240_data *data;
621 int err;
622
623 data = kzalloc(sizeof(*data), GFP_KERNEL);
624 if (!data) {
625 err = -ENOMEM;
626 goto exit;
627 }
628
629 i2c_set_clientdata(new_client, data);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100630 mutex_init(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000631
Grant Coady40b5cda2005-04-30 21:41:29 +1000632 adm9240_init_client(new_client);
633
634 /* populate sysfs filesystem */
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200635 if ((err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group)))
Jean Delvare7fae8282008-07-16 19:30:09 +0200636 goto exit_free;
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200637
Tony Jones1beeffe2007-08-20 13:46:20 -0700638 data->hwmon_dev = hwmon_device_register(&new_client->dev);
639 if (IS_ERR(data->hwmon_dev)) {
640 err = PTR_ERR(data->hwmon_dev);
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200641 goto exit_remove;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400642 }
643
Grant Coady40b5cda2005-04-30 21:41:29 +1000644 return 0;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400645
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200646exit_remove:
647 sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
Grant Coady40b5cda2005-04-30 21:41:29 +1000648exit_free:
Alexey Dobriyan1f57ff82005-08-26 01:49:14 +0400649 kfree(data);
Grant Coady40b5cda2005-04-30 21:41:29 +1000650exit:
651 return err;
652}
653
Jean Delvare7fae8282008-07-16 19:30:09 +0200654static int adm9240_remove(struct i2c_client *client)
Grant Coady40b5cda2005-04-30 21:41:29 +1000655{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400656 struct adm9240_data *data = i2c_get_clientdata(client);
Grant Coady40b5cda2005-04-30 21:41:29 +1000657
Tony Jones1beeffe2007-08-20 13:46:20 -0700658 hwmon_device_unregister(data->hwmon_dev);
Mark M. Hoffman681c6f72006-09-24 21:15:35 +0200659 sysfs_remove_group(&client->dev.kobj, &adm9240_group);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400660
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400661 kfree(data);
Grant Coady40b5cda2005-04-30 21:41:29 +1000662 return 0;
663}
664
665static void adm9240_init_client(struct i2c_client *client)
666{
667 struct adm9240_data *data = i2c_get_clientdata(client);
Grant Coady205cf132005-09-17 05:32:55 +1000668 u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG);
669 u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3;
Grant Coady40b5cda2005-04-30 21:41:29 +1000670
Jean Delvare303760b2005-07-31 21:52:01 +0200671 data->vrm = vid_which_vrm(); /* need this to report vid as mV */
Grant Coady40b5cda2005-04-30 21:41:29 +1000672
Grant Coady8e8f9282005-05-13 20:26:10 +1000673 dev_info(&client->dev, "Using VRM: %d.%d\n", data->vrm / 10,
674 data->vrm % 10);
675
Grant Coady40b5cda2005-04-30 21:41:29 +1000676 if (conf & 1) { /* measurement cycle running: report state */
677
678 dev_info(&client->dev, "status: config 0x%02x mode %u\n",
679 conf, mode);
680
681 } else { /* cold start: open limits before starting chip */
682 int i;
683
684 for (i = 0; i < 6; i++)
685 {
Grant Coady205cf132005-09-17 05:32:55 +1000686 i2c_smbus_write_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000687 ADM9240_REG_IN_MIN(i), 0);
Grant Coady205cf132005-09-17 05:32:55 +1000688 i2c_smbus_write_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000689 ADM9240_REG_IN_MAX(i), 255);
690 }
Grant Coady205cf132005-09-17 05:32:55 +1000691 i2c_smbus_write_byte_data(client,
692 ADM9240_REG_FAN_MIN(0), 255);
693 i2c_smbus_write_byte_data(client,
694 ADM9240_REG_FAN_MIN(1), 255);
695 i2c_smbus_write_byte_data(client,
Grant Coadyc7461a62005-09-17 05:32:57 +1000696 ADM9240_REG_TEMP_MAX(0), 127);
Grant Coady205cf132005-09-17 05:32:55 +1000697 i2c_smbus_write_byte_data(client,
Grant Coadyc7461a62005-09-17 05:32:57 +1000698 ADM9240_REG_TEMP_MAX(1), 127);
Grant Coady40b5cda2005-04-30 21:41:29 +1000699
700 /* start measurement cycle */
Grant Coady205cf132005-09-17 05:32:55 +1000701 i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1);
Grant Coady40b5cda2005-04-30 21:41:29 +1000702
703 dev_info(&client->dev, "cold start: config was 0x%02x "
704 "mode %u\n", conf, mode);
705 }
706}
707
708static struct adm9240_data *adm9240_update_device(struct device *dev)
709{
710 struct i2c_client *client = to_i2c_client(dev);
711 struct adm9240_data *data = i2c_get_clientdata(client);
712 int i;
713
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100714 mutex_lock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000715
716 /* minimum measurement cycle: 1.75 seconds */
717 if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
718 || !data->valid) {
719
720 for (i = 0; i < 6; i++) /* read voltages */
721 {
Grant Coady205cf132005-09-17 05:32:55 +1000722 data->in[i] = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000723 ADM9240_REG_IN(i));
724 }
Grant Coady205cf132005-09-17 05:32:55 +1000725 data->alarms = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000726 ADM9240_REG_INT(0)) |
Grant Coady205cf132005-09-17 05:32:55 +1000727 i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000728 ADM9240_REG_INT(1)) << 8;
729
730 /* read temperature: assume temperature changes less than
731 * 0.5'C per two measurement cycles thus ignore possible
732 * but unlikely aliasing error on lsb reading. --Grant */
Grant Coady205cf132005-09-17 05:32:55 +1000733 data->temp = ((i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000734 ADM9240_REG_TEMP) << 8) |
Grant Coady205cf132005-09-17 05:32:55 +1000735 i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000736 ADM9240_REG_TEMP_CONF)) / 128;
737
738 for (i = 0; i < 2; i++) /* read fans */
739 {
Grant Coady205cf132005-09-17 05:32:55 +1000740 data->fan[i] = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000741 ADM9240_REG_FAN(i));
742
743 /* adjust fan clock divider on overflow */
744 if (data->valid && data->fan[i] == 255 &&
745 data->fan_div[i] < 3) {
746
747 adm9240_write_fan_div(client, i,
748 ++data->fan_div[i]);
749
750 /* adjust fan_min if active, but not to 0 */
751 if (data->fan_min[i] < 255 &&
752 data->fan_min[i] >= 2)
753 data->fan_min[i] /= 2;
754 }
755 }
756 data->last_updated_measure = jiffies;
757 }
758
759 /* minimum config reading cycle: 300 seconds */
760 if (time_after(jiffies, data->last_updated_config + (HZ * 300))
761 || !data->valid) {
762
763 for (i = 0; i < 6; i++)
764 {
Grant Coady205cf132005-09-17 05:32:55 +1000765 data->in_min[i] = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000766 ADM9240_REG_IN_MIN(i));
Grant Coady205cf132005-09-17 05:32:55 +1000767 data->in_max[i] = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000768 ADM9240_REG_IN_MAX(i));
769 }
770 for (i = 0; i < 2; i++)
771 {
Grant Coady205cf132005-09-17 05:32:55 +1000772 data->fan_min[i] = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000773 ADM9240_REG_FAN_MIN(i));
774 }
Grant Coadyc7461a62005-09-17 05:32:57 +1000775 data->temp_max[0] = i2c_smbus_read_byte_data(client,
776 ADM9240_REG_TEMP_MAX(0));
777 data->temp_max[1] = i2c_smbus_read_byte_data(client,
778 ADM9240_REG_TEMP_MAX(1));
Grant Coady40b5cda2005-04-30 21:41:29 +1000779
780 /* read fan divs and 5-bit VID */
Grant Coady205cf132005-09-17 05:32:55 +1000781 i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
Grant Coady40b5cda2005-04-30 21:41:29 +1000782 data->fan_div[0] = (i >> 4) & 3;
783 data->fan_div[1] = (i >> 6) & 3;
784 data->vid = i & 0x0f;
Grant Coady205cf132005-09-17 05:32:55 +1000785 data->vid |= (i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000786 ADM9240_REG_VID4) & 1) << 4;
787 /* read analog out */
Grant Coady205cf132005-09-17 05:32:55 +1000788 data->aout = i2c_smbus_read_byte_data(client,
Grant Coady40b5cda2005-04-30 21:41:29 +1000789 ADM9240_REG_ANALOG_OUT);
790
791 data->last_updated_config = jiffies;
792 data->valid = 1;
793 }
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100794 mutex_unlock(&data->update_lock);
Grant Coady40b5cda2005-04-30 21:41:29 +1000795 return data;
796}
797
Axel Linf0967ee2012-01-20 15:38:18 +0800798module_i2c_driver(adm9240_driver);
Grant Coady40b5cda2005-04-30 21:41:29 +1000799
800MODULE_AUTHOR("Michiel Rook <michiel@grendelproject.nl>, "
Grant Coady2ca7b962006-10-08 21:57:41 +0200801 "Grant Coady <gcoady.lk@gmail.com> and others");
Grant Coady40b5cda2005-04-30 21:41:29 +1000802MODULE_DESCRIPTION("ADM9240/DS1780/LM81 driver");
803MODULE_LICENSE("GPL");