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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Guenter Roeck19f2c052012-01-14 13:26:08 -08002 * ds1621.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring
4 * Christian W. Zuckschwerdt <zany@triq.net> 2000-11-23
5 * based on lm75.c by Frodo Looijaard <frodol@dds.nl>
6 * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
Jean Delvare7c81c602014-01-29 20:40:08 +01007 * the help of Jean Delvare <jdelvare@suse.de>
Guenter Roeck19f2c052012-01-14 13:26:08 -08008 *
Robert Coulsoncd6c8a42013-05-08 22:45:53 -07009 * The DS1621 device is a digital temperature/thermometer with 9-bit
10 * resolution, a thermal alarm output (Tout), and user-defined minimum
11 * and maximum temperature thresholds (TH and TL).
12 *
Robert Coulson260f81f2013-06-10 18:46:02 -070013 * The DS1625, DS1631, DS1721, and DS1731 are pin compatible with the DS1621
14 * and similar in operation, with slight variations as noted in the device
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070015 * datasheets (please refer to www.maximintegrated.com for specific
16 * device information).
17 *
18 * Since the DS1621 was the first chipset supported by this driver,
19 * most comments will refer to this chipset, but are actually general
20 * and concern all supported chipsets, unless mentioned otherwise.
21 *
Guenter Roeck19f2c052012-01-14 13:26:08 -080022 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version.
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
31 *
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#include <linux/module.h>
38#include <linux/init.h>
39#include <linux/slab.h>
40#include <linux/jiffies.h>
41#include <linux/i2c.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040042#include <linux/hwmon.h>
Jean Delvare46a2e712007-06-09 10:11:15 -040043#include <linux/hwmon-sysfs.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040044#include <linux/err.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010045#include <linux/mutex.h>
Jean Delvarea5ebe662006-09-24 21:24:46 +020046#include <linux/sysfs.h>
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070047#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070049/* Supported devices */
Robert Coulson260f81f2013-06-10 18:46:02 -070050enum chips { ds1621, ds1625, ds1631, ds1721, ds1731 };
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052/* Insmod parameters */
Linus Torvalds1da177e2005-04-16 15:20:36 -070053static int polarity = -1;
54module_param(polarity, int, 0);
55MODULE_PARM_DESC(polarity, "Output's polarity: 0 = active high, 1 = active low");
56
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070057/*
58 * The Configuration/Status register
59 *
60 * - DS1621:
61 * 7 6 5 4 3 2 1 0
62 * |Done|THF |TLF |NVB | X | X |POL |1SHOT|
63 *
64 * - DS1625:
65 * 7 6 5 4 3 2 1 0
66 * |Done|THF |TLF |NVB | 1 | 0 |POL |1SHOT|
67 *
Robert Coulson260f81f2013-06-10 18:46:02 -070068 * - DS1631, DS1731:
Robert Coulson79c1cc12013-05-16 15:10:41 -070069 * 7 6 5 4 3 2 1 0
70 * |Done|THF |TLF |NVB | R1 | R0 |POL |1SHOT|
71 *
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070072 * - DS1721:
73 * 7 6 5 4 3 2 1 0
74 * |Done| X | X | U | R1 | R0 |POL |1SHOT|
75 *
76 * Where:
77 * - 'X' is Reserved
78 * - 'U' is Undefined
79 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#define DS1621_REG_CONFIG_NVB 0x10
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070081#define DS1621_REG_CONFIG_RESOL 0x0C
Linus Torvalds1da177e2005-04-16 15:20:36 -070082#define DS1621_REG_CONFIG_POLARITY 0x02
83#define DS1621_REG_CONFIG_1SHOT 0x01
84#define DS1621_REG_CONFIG_DONE 0x80
85
Robert Coulsoncd6c8a42013-05-08 22:45:53 -070086#define DS1621_REG_CONFIG_RESOL_SHIFT 2
87
88/* ds1721 conversion rates: {C/LSB, time(ms), resolution bit setting} */
89static const unsigned short ds1721_convrates[] = {
90 94, /* 9-bits (0.5, 93.75, RES[0..1] = 0 */
91 188, /* 10-bits (0.25, 187.5, RES[0..1] = 1 */
92 375, /* 11-bits (0.125, 375, RES[0..1] = 2 */
93 750, /* 12-bits (0.0625, 750, RES[0..1] = 3 */
94};
95
96#define DS1621_CONVERSION_MAX 750
97#define DS1625_CONVERSION_MAX 500
98
99#define DS1621_TEMP_MAX 125000
100#define DS1621_TEMP_MIN (-55000)
101
102/* The DS1621 temperature registers */
Jean Delvare46a2e712007-06-09 10:11:15 -0400103static const u8 DS1621_REG_TEMP[3] = {
104 0xAA, /* input, word, RO */
105 0xA2, /* min, word, RW */
106 0xA1, /* max, word, RW */
107};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108#define DS1621_REG_CONF 0xAC /* byte, RW */
109#define DS1621_COM_START 0xEE /* no data */
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700110#define DS1721_COM_START 0x51 /* no data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111#define DS1621_COM_STOP 0x22 /* no data */
112
113/* The DS1621 configuration register */
114#define DS1621_ALARM_TEMP_HIGH 0x40
115#define DS1621_ALARM_TEMP_LOW 0x20
116
Jean Delvare75819f02007-06-09 10:11:15 -0400117/* Conversions */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#define ALARMS_FROM_REG(val) ((val) & \
Guenter Roeck19f2c052012-01-14 13:26:08 -0800119 (DS1621_ALARM_TEMP_HIGH | DS1621_ALARM_TEMP_LOW))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
121/* Each client has this additional data */
122struct ds1621_data {
Guenter Roeck8269b752013-07-05 22:30:39 -0700123 struct i2c_client *client;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100124 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 char valid; /* !=0 if following fields are valid */
126 unsigned long last_updated; /* In jiffies */
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700127 enum chips kind; /* device type */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Jean Delvare46a2e712007-06-09 10:11:15 -0400129 u16 temp[3]; /* Register values, word */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 u8 conf; /* Register encoding, combined */
Guenter Roecka50d9a42013-06-27 10:07:19 -0700131 u8 zbits; /* Resolution encoded as number of
132 * zero bits */
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700133 u16 update_interval; /* Conversion rate in milliseconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134};
135
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700136static inline int DS1621_TEMP_FROM_REG(u16 reg)
137{
138 return DIV_ROUND_CLOSEST(((s16)reg / 16) * 625, 10);
139}
140
141/*
142 * TEMP: 0.001C/bit (-55C to +125C)
143 * REG:
Guenter Roecka50d9a42013-06-27 10:07:19 -0700144 * - 1621, 1625: 0.5C/bit, 7 zero-bits
145 * - 1631, 1721, 1731: 0.0625C/bit, 4 zero-bits
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700146 */
Guenter Roecka50d9a42013-06-27 10:07:19 -0700147static inline u16 DS1621_TEMP_TO_REG(long temp, u8 zbits)
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700148{
Guenter Roecka50d9a42013-06-27 10:07:19 -0700149 temp = clamp_val(temp, DS1621_TEMP_MIN, DS1621_TEMP_MAX);
150 temp = DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits;
151 return temp;
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700152}
153
Guenter Roeck8269b752013-07-05 22:30:39 -0700154static void ds1621_init_client(struct ds1621_data *data,
155 struct i2c_client *client)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156{
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700157 u8 conf, new_conf, sreg, resol;
Jean Delvaree4879e22009-03-30 21:46:40 +0200158
159 new_conf = conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
Steven Cole44bbe872005-05-03 18:21:25 -0600160 /* switch to continuous conversion mode */
Jean Delvaree4879e22009-03-30 21:46:40 +0200161 new_conf &= ~DS1621_REG_CONFIG_1SHOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
163 /* setup output polarity */
164 if (polarity == 0)
Jean Delvaree4879e22009-03-30 21:46:40 +0200165 new_conf &= ~DS1621_REG_CONFIG_POLARITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 else if (polarity == 1)
Jean Delvaree4879e22009-03-30 21:46:40 +0200167 new_conf |= DS1621_REG_CONFIG_POLARITY;
Guenter Roeck19f2c052012-01-14 13:26:08 -0800168
Jean Delvaree4879e22009-03-30 21:46:40 +0200169 if (conf != new_conf)
170 i2c_smbus_write_byte_data(client, DS1621_REG_CONF, new_conf);
Guenter Roeck19f2c052012-01-14 13:26:08 -0800171
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700172 switch (data->kind) {
173 case ds1625:
174 data->update_interval = DS1625_CONVERSION_MAX;
Guenter Roecka50d9a42013-06-27 10:07:19 -0700175 data->zbits = 7;
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700176 sreg = DS1621_COM_START;
177 break;
Robert Coulson79c1cc12013-05-16 15:10:41 -0700178 case ds1631:
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700179 case ds1721:
Robert Coulson260f81f2013-06-10 18:46:02 -0700180 case ds1731:
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700181 resol = (new_conf & DS1621_REG_CONFIG_RESOL) >>
182 DS1621_REG_CONFIG_RESOL_SHIFT;
183 data->update_interval = ds1721_convrates[resol];
Guenter Roecka50d9a42013-06-27 10:07:19 -0700184 data->zbits = 7 - resol;
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700185 sreg = DS1721_COM_START;
186 break;
187 default:
188 data->update_interval = DS1621_CONVERSION_MAX;
Guenter Roecka50d9a42013-06-27 10:07:19 -0700189 data->zbits = 7;
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700190 sreg = DS1621_COM_START;
191 break;
192 }
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 /* start conversion */
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700195 i2c_smbus_write_byte(client, sreg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196}
197
Jean Delvare9202add2009-03-30 21:46:40 +0200198static struct ds1621_data *ds1621_update_client(struct device *dev)
199{
Guenter Roeck8269b752013-07-05 22:30:39 -0700200 struct ds1621_data *data = dev_get_drvdata(dev);
201 struct i2c_client *client = data->client;
Jean Delvare9202add2009-03-30 21:46:40 +0200202 u8 new_conf;
203
204 mutex_lock(&data->update_lock);
205
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700206 if (time_after(jiffies, data->last_updated + data->update_interval) ||
207 !data->valid) {
Jean Delvare9202add2009-03-30 21:46:40 +0200208 int i;
209
210 dev_dbg(&client->dev, "Starting ds1621 update\n");
211
Jean Delvare594592d2009-03-30 21:46:40 +0200212 data->conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
Jean Delvare9202add2009-03-30 21:46:40 +0200213
214 for (i = 0; i < ARRAY_SIZE(data->temp); i++)
Jean Delvare90f41022011-11-04 12:00:47 +0100215 data->temp[i] = i2c_smbus_read_word_swapped(client,
Jean Delvare594592d2009-03-30 21:46:40 +0200216 DS1621_REG_TEMP[i]);
Jean Delvare9202add2009-03-30 21:46:40 +0200217
218 /* reset alarms if necessary */
219 new_conf = data->conf;
220 if (data->temp[0] > data->temp[1]) /* input > min */
221 new_conf &= ~DS1621_ALARM_TEMP_LOW;
222 if (data->temp[0] < data->temp[2]) /* input < max */
223 new_conf &= ~DS1621_ALARM_TEMP_HIGH;
224 if (data->conf != new_conf)
Jean Delvare594592d2009-03-30 21:46:40 +0200225 i2c_smbus_write_byte_data(client, DS1621_REG_CONF,
226 new_conf);
Jean Delvare9202add2009-03-30 21:46:40 +0200227
228 data->last_updated = jiffies;
229 data->valid = 1;
230 }
231
232 mutex_unlock(&data->update_lock);
233
234 return data;
235}
236
Jean Delvare46a2e712007-06-09 10:11:15 -0400237static ssize_t show_temp(struct device *dev, struct device_attribute *da,
238 char *buf)
239{
240 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
241 struct ds1621_data *data = ds1621_update_client(dev);
242 return sprintf(buf, "%d\n",
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700243 DS1621_TEMP_FROM_REG(data->temp[attr->index]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244}
245
Jean Delvare46a2e712007-06-09 10:11:15 -0400246static ssize_t set_temp(struct device *dev, struct device_attribute *da,
247 const char *buf, size_t count)
248{
249 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
Guenter Roeck8269b752013-07-05 22:30:39 -0700250 struct ds1621_data *data = dev_get_drvdata(dev);
Guenter Roeck19f2c052012-01-14 13:26:08 -0800251 long val;
252 int err;
253
254 err = kstrtol(buf, 10, &val);
255 if (err)
256 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Jean Delvare46a2e712007-06-09 10:11:15 -0400258 mutex_lock(&data->update_lock);
Guenter Roecka50d9a42013-06-27 10:07:19 -0700259 data->temp[attr->index] = DS1621_TEMP_TO_REG(val, data->zbits);
Guenter Roeck8269b752013-07-05 22:30:39 -0700260 i2c_smbus_write_word_swapped(data->client, DS1621_REG_TEMP[attr->index],
Jean Delvare90f41022011-11-04 12:00:47 +0100261 data->temp[attr->index]);
Jean Delvare46a2e712007-06-09 10:11:15 -0400262 mutex_unlock(&data->update_lock);
263 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264}
265
Julia Lawall345d52f2016-12-22 13:04:38 +0100266static ssize_t alarms_show(struct device *dev, struct device_attribute *da,
Jean Delvare46a2e712007-06-09 10:11:15 -0400267 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
269 struct ds1621_data *data = ds1621_update_client(dev);
270 return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->conf));
271}
272
Jean Delvare87f0f312007-06-09 10:11:15 -0400273static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
274 char *buf)
275{
276 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
277 struct ds1621_data *data = ds1621_update_client(dev);
278 return sprintf(buf, "%d\n", !!(data->conf & attr->index));
279}
280
Julia Lawall345d52f2016-12-22 13:04:38 +0100281static ssize_t update_interval_show(struct device *dev,
282 struct device_attribute *da, char *buf)
Robert Coulson3a8fe332013-05-08 22:45:54 -0700283{
Guenter Roeck8269b752013-07-05 22:30:39 -0700284 struct ds1621_data *data = dev_get_drvdata(dev);
Robert Coulson3a8fe332013-05-08 22:45:54 -0700285 return scnprintf(buf, PAGE_SIZE, "%hu\n", data->update_interval);
286}
287
Julia Lawall345d52f2016-12-22 13:04:38 +0100288static ssize_t update_interval_store(struct device *dev,
289 struct device_attribute *da,
290 const char *buf, size_t count)
Robert Coulson3a8fe332013-05-08 22:45:54 -0700291{
Guenter Roeck8269b752013-07-05 22:30:39 -0700292 struct ds1621_data *data = dev_get_drvdata(dev);
293 struct i2c_client *client = data->client;
Robert Coulson3a8fe332013-05-08 22:45:54 -0700294 unsigned long convrate;
295 s32 err;
296 int resol = 0;
297
298 err = kstrtoul(buf, 10, &convrate);
299 if (err)
300 return err;
301
302 /* Convert rate into resolution bits */
303 while (resol < (ARRAY_SIZE(ds1721_convrates) - 1) &&
304 convrate > ds1721_convrates[resol])
305 resol++;
306
307 mutex_lock(&data->update_lock);
308 data->conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
309 data->conf &= ~DS1621_REG_CONFIG_RESOL;
310 data->conf |= (resol << DS1621_REG_CONFIG_RESOL_SHIFT);
311 i2c_smbus_write_byte_data(client, DS1621_REG_CONF, data->conf);
312 data->update_interval = ds1721_convrates[resol];
Robert Coulson39c627a2014-08-28 10:45:43 -0700313 data->zbits = 7 - resol;
Robert Coulson3a8fe332013-05-08 22:45:54 -0700314 mutex_unlock(&data->update_lock);
315
316 return count;
317}
318
Julia Lawall345d52f2016-12-22 13:04:38 +0100319static DEVICE_ATTR_RO(alarms);
320static DEVICE_ATTR_RW(update_interval);
Robert Coulson3a8fe332013-05-08 22:45:54 -0700321
Jean Delvare46a2e712007-06-09 10:11:15 -0400322static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
323static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp, set_temp, 1);
324static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp, set_temp, 2);
Jean Delvare87f0f312007-06-09 10:11:15 -0400325static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL,
326 DS1621_ALARM_TEMP_LOW);
327static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL,
328 DS1621_ALARM_TEMP_HIGH);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
Jean Delvarea5ebe662006-09-24 21:24:46 +0200330static struct attribute *ds1621_attributes[] = {
Jean Delvare46a2e712007-06-09 10:11:15 -0400331 &sensor_dev_attr_temp1_input.dev_attr.attr,
332 &sensor_dev_attr_temp1_min.dev_attr.attr,
333 &sensor_dev_attr_temp1_max.dev_attr.attr,
Jean Delvare87f0f312007-06-09 10:11:15 -0400334 &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
335 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200336 &dev_attr_alarms.attr,
Robert Coulson3a8fe332013-05-08 22:45:54 -0700337 &dev_attr_update_interval.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200338 NULL
339};
340
Robert Coulson3a8fe332013-05-08 22:45:54 -0700341static umode_t ds1621_attribute_visible(struct kobject *kobj,
342 struct attribute *attr, int index)
343{
344 struct device *dev = container_of(kobj, struct device, kobj);
Guenter Roeck8269b752013-07-05 22:30:39 -0700345 struct ds1621_data *data = dev_get_drvdata(dev);
Robert Coulson3a8fe332013-05-08 22:45:54 -0700346
347 if (attr == &dev_attr_update_interval.attr)
Robert Coulson79c1cc12013-05-16 15:10:41 -0700348 if (data->kind == ds1621 || data->kind == ds1625)
Robert Coulson3a8fe332013-05-08 22:45:54 -0700349 /* shhh, we're hiding update_interval */
350 return 0;
351 return attr->mode;
352}
353
Jean Delvarea5ebe662006-09-24 21:24:46 +0200354static const struct attribute_group ds1621_group = {
355 .attrs = ds1621_attributes,
Robert Coulson3a8fe332013-05-08 22:45:54 -0700356 .is_visible = ds1621_attribute_visible
Jean Delvarea5ebe662006-09-24 21:24:46 +0200357};
Guenter Roeck0d36dce2013-07-11 22:55:51 -0700358__ATTRIBUTE_GROUPS(ds1621);
Guenter Roeck8269b752013-07-05 22:30:39 -0700359
Jean Delvare70313ea2008-07-16 19:30:11 +0200360static int ds1621_probe(struct i2c_client *client,
361 const struct i2c_device_id *id)
362{
363 struct ds1621_data *data;
Guenter Roeck8269b752013-07-05 22:30:39 -0700364 struct device *hwmon_dev;
Jean Delvare70313ea2008-07-16 19:30:11 +0200365
Guenter Roecke20b4b32012-06-02 09:58:03 -0700366 data = devm_kzalloc(&client->dev, sizeof(struct ds1621_data),
367 GFP_KERNEL);
368 if (!data)
369 return -ENOMEM;
Jean Delvare70313ea2008-07-16 19:30:11 +0200370
Jean Delvare70313ea2008-07-16 19:30:11 +0200371 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700373 data->kind = id->driver_data;
Guenter Roeck8269b752013-07-05 22:30:39 -0700374 data->client = client;
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 /* Initialize the DS1621 chip */
Guenter Roeck8269b752013-07-05 22:30:39 -0700377 ds1621_init_client(data, client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Guenter Roeck0d36dce2013-07-11 22:55:51 -0700379 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
380 client->name, data,
381 ds1621_groups);
Fengguang Wu31ab1ad2013-09-17 20:54:09 -0700382 return PTR_ERR_OR_ZERO(hwmon_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383}
384
Jean Delvare9202add2009-03-30 21:46:40 +0200385static const struct i2c_device_id ds1621_id[] = {
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700386 { "ds1621", ds1621 },
387 { "ds1625", ds1625 },
Robert Coulson79c1cc12013-05-16 15:10:41 -0700388 { "ds1631", ds1631 },
Robert Coulsoncd6c8a42013-05-08 22:45:53 -0700389 { "ds1721", ds1721 },
Robert Coulson260f81f2013-06-10 18:46:02 -0700390 { "ds1731", ds1731 },
Jean Delvare9202add2009-03-30 21:46:40 +0200391 { }
392};
393MODULE_DEVICE_TABLE(i2c, ds1621_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
Jean Delvare9202add2009-03-30 21:46:40 +0200395/* This is the driver that will be inserted */
396static struct i2c_driver ds1621_driver = {
397 .class = I2C_CLASS_HWMON,
398 .driver = {
399 .name = "ds1621",
400 },
401 .probe = ds1621_probe,
Jean Delvare9202add2009-03-30 21:46:40 +0200402 .id_table = ds1621_id,
Jean Delvare9202add2009-03-30 21:46:40 +0200403};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
Axel Linf0967ee2012-01-20 15:38:18 +0800405module_i2c_driver(ds1621_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407MODULE_AUTHOR("Christian W. Zuckschwerdt <zany@triq.net>");
408MODULE_DESCRIPTION("DS1621 driver");
409MODULE_LICENSE("GPL");