blob: e1c183f0aae0b8c70cd16066548d2ee2c7fca082 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * lm87.c
3 *
4 * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl>
5 * Philip Edelbrock <phil@netroedge.com>
6 * Stephen Rousset <stephen.rousset@rocketlogix.com>
7 * Dan Eaton <dan.eaton@rocketlogix.com>
Jean Delvarec7fa3732007-10-09 15:22:22 +02008 * Copyright (C) 2004,2007 Jean Delvare <khali@linux-fr.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
10 * Original port to Linux 2.6 by Jeff Oliver.
11 *
12 * The LM87 is a sensor chip made by National Semiconductor. It monitors up
13 * to 8 voltages (including its own power source), up to three temperatures
14 * (its own plus up to two external ones) and up to two fans. The default
15 * configuration is 6 voltages, two temperatures and two fans (see below).
16 * Voltages are scaled internally with ratios such that the nominal value of
17 * each voltage correspond to a register value of 192 (which means a
18 * resolution of about 0.5% of the nominal value). Temperature values are
19 * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete
20 * datasheet can be obtained from National's website at:
21 * http://www.national.com/pf/LM/LM87.html
22 *
23 * Some functions share pins, so not all functions are available at the same
24 * time. Which are depends on the hardware setup. This driver assumes that
25 * the BIOS configured the chip correctly. In that respect, it differs from
26 * the original driver (from lm_sensors for Linux 2.4), which would force the
27 * LM87 to an arbitrary, compile-time chosen mode, regardless of the actual
28 * chipset wiring.
29 * For reference, here is the list of exclusive functions:
30 * - in0+in5 (default) or temp3
31 * - fan1 (default) or in6
32 * - fan2 (default) or in7
33 * - VID lines (default) or IRQ lines (not handled by this driver)
34 *
35 * The LM87 additionally features an analog output, supposedly usable to
36 * control the speed of a fan. All new chips use pulse width modulation
37 * instead. The LM87 is the only hardware monitoring chipset I know of
38 * which uses amplitude modulation. Be careful when using this feature.
39 *
Jean Delvarec7fa3732007-10-09 15:22:22 +020040 * This driver also supports the ADM1024, a sensor chip made by Analog
41 * Devices. That chip is fully compatible with the LM87. Complete
42 * datasheet can be obtained from Analog's website at:
43 * http://www.analog.com/en/prod/0,2877,ADM1024,00.html
44 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 * This program is free software; you can redistribute it and/or modify
46 * it under the terms of the GNU General Public License as published by
47 * the Free Software Foundation; either version 2 of the License, or
48 * (at your option) any later version.
49 *
50 * This program is distributed in the hope that it will be useful,
51 * but WITHOUT ANY WARRANTY; without even the implied warranty of
52 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
53 * GNU General Public License for more details.
54 *
55 * You should have received a copy of the GNU General Public License
56 * along with this program; if not, write to the Free Software
57 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
58 */
59
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#include <linux/module.h>
61#include <linux/init.h>
62#include <linux/slab.h>
63#include <linux/jiffies.h>
64#include <linux/i2c.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040065#include <linux/hwmon.h>
Jean Delvarec2803b92007-09-26 23:39:01 +020066#include <linux/hwmon-sysfs.h>
Jean Delvare303760b2005-07-31 21:52:01 +020067#include <linux/hwmon-vid.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040068#include <linux/err.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010069#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
71/*
72 * Addresses to scan
73 * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e.
74 */
75
Mark M. Hoffman25e9c862008-02-17 22:28:03 -050076static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
78/*
79 * Insmod parameters
80 */
81
Jean Delvarec7fa3732007-10-09 15:22:22 +020082I2C_CLIENT_INSMOD_2(lm87, adm1024);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
84/*
85 * The LM87 registers
86 */
87
88/* nr in 0..5 */
89#define LM87_REG_IN(nr) (0x20 + (nr))
90#define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2)
91#define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2)
92/* nr in 0..1 */
93#define LM87_REG_AIN(nr) (0x28 + (nr))
94#define LM87_REG_AIN_MIN(nr) (0x1A + (nr))
95#define LM87_REG_AIN_MAX(nr) (0x3B + (nr))
96
97static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 };
98static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B };
99static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
100
101#define LM87_REG_TEMP_HW_INT_LOCK 0x13
102#define LM87_REG_TEMP_HW_EXT_LOCK 0x14
103#define LM87_REG_TEMP_HW_INT 0x17
104#define LM87_REG_TEMP_HW_EXT 0x18
105
106/* nr in 0..1 */
107#define LM87_REG_FAN(nr) (0x28 + (nr))
108#define LM87_REG_FAN_MIN(nr) (0x3B + (nr))
109#define LM87_REG_AOUT 0x19
110
111#define LM87_REG_CONFIG 0x40
112#define LM87_REG_CHANNEL_MODE 0x16
113#define LM87_REG_VID_FAN_DIV 0x47
114#define LM87_REG_VID4 0x49
115
116#define LM87_REG_ALARMS1 0x41
117#define LM87_REG_ALARMS2 0x42
118
119#define LM87_REG_COMPANY_ID 0x3E
120#define LM87_REG_REVISION 0x3F
121
122/*
123 * Conversions and various macros
124 * The LM87 uses signed 8-bit values for temperatures.
125 */
126
127#define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192)
128#define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \
129 (val) * 192 >= (scale) * 255 ? 255 : \
130 ((val) * 192 + (scale)/2) / (scale))
131
132#define TEMP_FROM_REG(reg) ((reg) * 1000)
133#define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \
134 (val) >= 126500 ? 127 : \
135 (((val) < 0 ? (val)-500 : (val)+500) / 1000))
136
137#define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \
Jean Delvareb965d4b2007-09-26 22:16:56 +0200138 (1350000 + (reg)*(div) / 2) / ((reg)*(div)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \
140 (1350000 + (val)*(div) / 2) / ((val)*(div)))
141
142#define FAN_DIV_FROM_REG(reg) (1 << (reg))
143
144/* analog out is 9.80mV/LSB */
145#define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10)
146#define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \
147 (val) >= 2500 ? 255 : \
148 ((val) * 10 + 49) / 98)
149
150/* nr in 0..1 */
151#define CHAN_NO_FAN(nr) (1 << (nr))
152#define CHAN_TEMP3 (1 << 2)
153#define CHAN_VCC_5V (1 << 3)
Jean Delvare889af3d2007-10-08 22:48:10 +0200154#define CHAN_NO_VID (1 << 7)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156/*
157 * Functions declaration
158 */
159
160static int lm87_attach_adapter(struct i2c_adapter *adapter);
161static int lm87_detect(struct i2c_adapter *adapter, int address, int kind);
162static void lm87_init_client(struct i2c_client *client);
163static int lm87_detach_client(struct i2c_client *client);
164static struct lm87_data *lm87_update_device(struct device *dev);
165
166/*
167 * Driver data (common to all clients)
168 */
169
170static struct i2c_driver lm87_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100171 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100172 .name = "lm87",
173 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 .attach_adapter = lm87_attach_adapter,
175 .detach_client = lm87_detach_client,
176};
177
178/*
179 * Client data (each client gets its own)
180 */
181
182struct lm87_data {
183 struct i2c_client client;
Tony Jones1beeffe2007-08-20 13:46:20 -0700184 struct device *hwmon_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100185 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 char valid; /* zero until following fields are valid */
187 unsigned long last_updated; /* In jiffies */
188
189 u8 channel; /* register value */
190
191 u8 in[8]; /* register value */
192 u8 in_max[8]; /* register value */
193 u8 in_min[8]; /* register value */
194 u16 in_scale[8];
195
196 s8 temp[3]; /* register value */
197 s8 temp_high[3]; /* register value */
198 s8 temp_low[3]; /* register value */
199 s8 temp_crit_int; /* min of two register values */
200 s8 temp_crit_ext; /* min of two register values */
201
202 u8 fan[2]; /* register value */
203 u8 fan_min[2]; /* register value */
204 u8 fan_div[2]; /* register value, shifted right */
205 u8 aout; /* register value */
206
207 u16 alarms; /* register values, combined */
208 u8 vid; /* register values, combined */
209 u8 vrm;
210};
211
212/*
213 * Sysfs stuff
214 */
215
216static inline int lm87_read_value(struct i2c_client *client, u8 reg)
217{
218 return i2c_smbus_read_byte_data(client, reg);
219}
220
221static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value)
222{
223 return i2c_smbus_write_byte_data(client, reg, value);
224}
225
226#define show_in(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400227static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{ \
229 struct lm87_data *data = lm87_update_device(dev); \
230 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
231 data->in_scale[offset])); \
232} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400233static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234{ \
235 struct lm87_data *data = lm87_update_device(dev); \
236 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
237 data->in_scale[offset])); \
238} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400239static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240{ \
241 struct lm87_data *data = lm87_update_device(dev); \
242 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
243 data->in_scale[offset])); \
244} \
245static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
246 show_in##offset##_input, NULL);
247show_in(0);
248show_in(1);
249show_in(2);
250show_in(3);
251show_in(4);
252show_in(5);
253show_in(6);
254show_in(7);
255
256static void set_in_min(struct device *dev, const char *buf, int nr)
257{
258 struct i2c_client *client = to_i2c_client(dev);
259 struct lm87_data *data = i2c_get_clientdata(client);
260 long val = simple_strtol(buf, NULL, 10);
261
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100262 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]);
264 lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) :
265 LM87_REG_AIN_MIN(nr-6), data->in_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100266 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267}
268
269static void set_in_max(struct device *dev, const char *buf, int nr)
270{
271 struct i2c_client *client = to_i2c_client(dev);
272 struct lm87_data *data = i2c_get_clientdata(client);
273 long val = simple_strtol(buf, NULL, 10);
274
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100275 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]);
277 lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) :
278 LM87_REG_AIN_MAX(nr-6), data->in_max[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100279 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280}
281
282#define set_in(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400283static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 const char *buf, size_t count) \
285{ \
286 set_in_min(dev, buf, offset); \
287 return count; \
288} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400289static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 const char *buf, size_t count) \
291{ \
292 set_in_max(dev, buf, offset); \
293 return count; \
294} \
295static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
296 show_in##offset##_min, set_in##offset##_min); \
297static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
298 show_in##offset##_max, set_in##offset##_max);
299set_in(0);
300set_in(1);
301set_in(2);
302set_in(3);
303set_in(4);
304set_in(5);
305set_in(6);
306set_in(7);
307
308#define show_temp(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400309static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310{ \
311 struct lm87_data *data = lm87_update_device(dev); \
312 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
313} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400314static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315{ \
316 struct lm87_data *data = lm87_update_device(dev); \
317 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \
318} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400319static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{ \
321 struct lm87_data *data = lm87_update_device(dev); \
322 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \
323}\
324static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
325 show_temp##offset##_input, NULL);
326show_temp(1);
327show_temp(2);
328show_temp(3);
329
330static void set_temp_low(struct device *dev, const char *buf, int nr)
331{
332 struct i2c_client *client = to_i2c_client(dev);
333 struct lm87_data *data = i2c_get_clientdata(client);
334 long val = simple_strtol(buf, NULL, 10);
335
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100336 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 data->temp_low[nr] = TEMP_TO_REG(val);
338 lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100339 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340}
341
342static void set_temp_high(struct device *dev, const char *buf, int nr)
343{
344 struct i2c_client *client = to_i2c_client(dev);
345 struct lm87_data *data = i2c_get_clientdata(client);
346 long val = simple_strtol(buf, NULL, 10);
347
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100348 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 data->temp_high[nr] = TEMP_TO_REG(val);
350 lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100351 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352}
353
354#define set_temp(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400355static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 const char *buf, size_t count) \
357{ \
358 set_temp_low(dev, buf, offset-1); \
359 return count; \
360} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400361static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 const char *buf, size_t count) \
363{ \
364 set_temp_high(dev, buf, offset-1); \
365 return count; \
366} \
367static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
368 show_temp##offset##_high, set_temp##offset##_high); \
369static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
370 show_temp##offset##_low, set_temp##offset##_low);
371set_temp(1);
372set_temp(2);
373set_temp(3);
374
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400375static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376{
377 struct lm87_data *data = lm87_update_device(dev);
378 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int));
379}
380
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400381static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382{
383 struct lm87_data *data = lm87_update_device(dev);
384 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext));
385}
386
387static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL);
388static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL);
389static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL);
390
391#define show_fan(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400392static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393{ \
394 struct lm87_data *data = lm87_update_device(dev); \
395 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \
396 FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \
397} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400398static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399{ \
400 struct lm87_data *data = lm87_update_device(dev); \
401 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \
402 FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \
403} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400404static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405{ \
406 struct lm87_data *data = lm87_update_device(dev); \
407 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \
408} \
409static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
410 show_fan##offset##_input, NULL);
411show_fan(1);
412show_fan(2);
413
414static void set_fan_min(struct device *dev, const char *buf, int nr)
415{
416 struct i2c_client *client = to_i2c_client(dev);
417 struct lm87_data *data = i2c_get_clientdata(client);
418 long val = simple_strtol(buf, NULL, 10);
419
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100420 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 data->fan_min[nr] = FAN_TO_REG(val,
422 FAN_DIV_FROM_REG(data->fan_div[nr]));
423 lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100424 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425}
426
427/* Note: we save and restore the fan minimum here, because its value is
428 determined in part by the fan clock divider. This follows the principle
Andreas Mohrd6e05ed2006-06-26 18:35:02 +0200429 of least surprise; the user doesn't expect the fan minimum to change just
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 because the divider changed. */
431static ssize_t set_fan_div(struct device *dev, const char *buf,
432 size_t count, int nr)
433{
434 struct i2c_client *client = to_i2c_client(dev);
435 struct lm87_data *data = i2c_get_clientdata(client);
436 long val = simple_strtol(buf, NULL, 10);
437 unsigned long min;
438 u8 reg;
439
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100440 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 min = FAN_FROM_REG(data->fan_min[nr],
442 FAN_DIV_FROM_REG(data->fan_div[nr]));
443
444 switch (val) {
445 case 1: data->fan_div[nr] = 0; break;
446 case 2: data->fan_div[nr] = 1; break;
447 case 4: data->fan_div[nr] = 2; break;
448 case 8: data->fan_div[nr] = 3; break;
449 default:
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100450 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 return -EINVAL;
452 }
453
454 reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
455 switch (nr) {
456 case 0:
457 reg = (reg & 0xCF) | (data->fan_div[0] << 4);
458 break;
459 case 1:
460 reg = (reg & 0x3F) | (data->fan_div[1] << 6);
461 break;
462 }
463 lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg);
464
465 data->fan_min[nr] = FAN_TO_REG(min, val);
466 lm87_write_value(client, LM87_REG_FAN_MIN(nr),
467 data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100468 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
470 return count;
471}
472
473#define set_fan(offset) \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400474static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 size_t count) \
476{ \
477 set_fan_min(dev, buf, offset-1); \
478 return count; \
479} \
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400480static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 size_t count) \
482{ \
483 return set_fan_div(dev, buf, count, offset-1); \
484} \
485static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
486 show_fan##offset##_min, set_fan##offset##_min); \
487static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
488 show_fan##offset##_div, set_fan##offset##_div);
489set_fan(1);
490set_fan(2);
491
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400492static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493{
494 struct lm87_data *data = lm87_update_device(dev);
495 return sprintf(buf, "%d\n", data->alarms);
496}
497static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
498
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400499static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500{
501 struct lm87_data *data = lm87_update_device(dev);
502 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
503}
504static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
505
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400506static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507{
Jean Delvare90d66192007-10-08 18:24:35 +0200508 struct lm87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 return sprintf(buf, "%d\n", data->vrm);
510}
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400511static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
Jean Delvare8f74efe2007-12-01 11:25:33 +0100513 struct lm87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 data->vrm = simple_strtoul(buf, NULL, 10);
515 return count;
516}
517static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
518
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400519static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520{
521 struct lm87_data *data = lm87_update_device(dev);
522 return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
523}
Yani Ioannou8627f9b2005-05-17 06:42:03 -0400524static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525{
526 struct i2c_client *client = to_i2c_client(dev);
527 struct lm87_data *data = i2c_get_clientdata(client);
528 long val = simple_strtol(buf, NULL, 10);
529
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100530 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 data->aout = AOUT_TO_REG(val);
532 lm87_write_value(client, LM87_REG_AOUT, data->aout);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100533 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 return count;
535}
536static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
537
Jean Delvarec2803b92007-09-26 23:39:01 +0200538static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
539 char *buf)
540{
541 struct lm87_data *data = lm87_update_device(dev);
542 int bitnr = to_sensor_dev_attr(attr)->index;
543 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
544}
545static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
546static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
547static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
548static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
549static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
550static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
551static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6);
552static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7);
553static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
554static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
555static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5);
556static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
557static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
558static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14);
559static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
560
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561/*
562 * Real code
563 */
564
565static int lm87_attach_adapter(struct i2c_adapter *adapter)
566{
567 if (!(adapter->class & I2C_CLASS_HWMON))
568 return 0;
Jean Delvare2ed2dc32005-07-31 21:42:02 +0200569 return i2c_probe(adapter, &addr_data, lm87_detect);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570}
571
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200572static struct attribute *lm87_attributes[] = {
573 &dev_attr_in1_input.attr,
574 &dev_attr_in1_min.attr,
575 &dev_attr_in1_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200576 &sensor_dev_attr_in1_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200577 &dev_attr_in2_input.attr,
578 &dev_attr_in2_min.attr,
579 &dev_attr_in2_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200580 &sensor_dev_attr_in2_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200581 &dev_attr_in3_input.attr,
582 &dev_attr_in3_min.attr,
583 &dev_attr_in3_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200584 &sensor_dev_attr_in3_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200585 &dev_attr_in4_input.attr,
586 &dev_attr_in4_min.attr,
587 &dev_attr_in4_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200588 &sensor_dev_attr_in4_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200589
590 &dev_attr_temp1_input.attr,
591 &dev_attr_temp1_max.attr,
592 &dev_attr_temp1_min.attr,
593 &dev_attr_temp1_crit.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200594 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200595 &dev_attr_temp2_input.attr,
596 &dev_attr_temp2_max.attr,
597 &dev_attr_temp2_min.attr,
598 &dev_attr_temp2_crit.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200599 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
600 &sensor_dev_attr_temp2_fault.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200601
602 &dev_attr_alarms.attr,
603 &dev_attr_aout_output.attr,
604
605 NULL
606};
607
608static const struct attribute_group lm87_group = {
609 .attrs = lm87_attributes,
610};
611
612static struct attribute *lm87_attributes_opt[] = {
613 &dev_attr_in6_input.attr,
614 &dev_attr_in6_min.attr,
615 &dev_attr_in6_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200616 &sensor_dev_attr_in6_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200617
618 &dev_attr_fan1_input.attr,
619 &dev_attr_fan1_min.attr,
620 &dev_attr_fan1_div.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200621 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200622
623 &dev_attr_in7_input.attr,
624 &dev_attr_in7_min.attr,
625 &dev_attr_in7_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200626 &sensor_dev_attr_in7_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200627
628 &dev_attr_fan2_input.attr,
629 &dev_attr_fan2_min.attr,
630 &dev_attr_fan2_div.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200631 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200632
633 &dev_attr_temp3_input.attr,
634 &dev_attr_temp3_max.attr,
635 &dev_attr_temp3_min.attr,
636 &dev_attr_temp3_crit.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200637 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
638 &sensor_dev_attr_temp3_fault.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200639
640 &dev_attr_in0_input.attr,
641 &dev_attr_in0_min.attr,
642 &dev_attr_in0_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200643 &sensor_dev_attr_in0_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200644 &dev_attr_in5_input.attr,
645 &dev_attr_in5_min.attr,
646 &dev_attr_in5_max.attr,
Jean Delvarec2803b92007-09-26 23:39:01 +0200647 &sensor_dev_attr_in5_alarm.dev_attr.attr,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200648
649 &dev_attr_cpu0_vid.attr,
650 &dev_attr_vrm.attr,
651
652 NULL
653};
654
655static const struct attribute_group lm87_group_opt = {
656 .attrs = lm87_attributes_opt,
657};
658
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659/*
660 * The following function does more than just detection. If detection
661 * succeeds, it also registers the new chip.
662 */
663static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
664{
665 struct i2c_client *new_client;
666 struct lm87_data *data;
667 int err = 0;
Jean Delvarec7fa3732007-10-09 15:22:22 +0200668 static const char *names[] = { "lm87", "adm1024" };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
670 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
671 goto exit;
672
Deepak Saxenaba9c2e82005-10-17 23:08:32 +0200673 if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 err = -ENOMEM;
675 goto exit;
676 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677
678 /* The common I2C client data is placed right before the
679 LM87-specific data. */
680 new_client = &data->client;
681 i2c_set_clientdata(new_client, data);
682 new_client->addr = address;
683 new_client->adapter = adapter;
684 new_client->driver = &lm87_driver;
685 new_client->flags = 0;
686
687 /* Default to an LM87 if forced */
688 if (kind == 0)
689 kind = lm87;
690
691 /* Now, we do the remaining detection. */
692 if (kind < 0) {
Jean Delvarec7fa3732007-10-09 15:22:22 +0200693 u8 cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 u8 rev = lm87_read_value(new_client, LM87_REG_REVISION);
695
Jean Delvarec7fa3732007-10-09 15:22:22 +0200696 if (cid == 0x02 /* National Semiconductor */
697 && (rev >= 0x01 && rev <= 0x08))
698 kind = lm87;
699 else if (cid == 0x41 /* Analog Devices */
700 && (rev & 0xf0) == 0x10)
701 kind = adm1024;
702
703 if (kind < 0
704 || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 dev_dbg(&adapter->dev,
706 "LM87 detection failed at 0x%02x.\n",
707 address);
708 goto exit_free;
709 }
710 }
711
712 /* We can fill in the remaining client fields */
Jean Delvarec7fa3732007-10-09 15:22:22 +0200713 strlcpy(new_client->name, names[kind - 1], I2C_NAME_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 data->valid = 0;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100715 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716
717 /* Tell the I2C layer a new client has arrived */
718 if ((err = i2c_attach_client(new_client)))
719 goto exit_free;
720
721 /* Initialize the LM87 chip */
722 lm87_init_client(new_client);
723
724 data->in_scale[0] = 2500;
725 data->in_scale[1] = 2700;
726 data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300;
727 data->in_scale[3] = 5000;
728 data->in_scale[4] = 12000;
729 data->in_scale[5] = 2700;
730 data->in_scale[6] = 1875;
731 data->in_scale[7] = 1875;
732
733 /* Register sysfs hooks */
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200734 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm87_group)))
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400735 goto exit_detach;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
737 if (data->channel & CHAN_NO_FAN(0)) {
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200738 if ((err = device_create_file(&new_client->dev,
739 &dev_attr_in6_input))
740 || (err = device_create_file(&new_client->dev,
741 &dev_attr_in6_min))
742 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200743 &dev_attr_in6_max))
744 || (err = device_create_file(&new_client->dev,
745 &sensor_dev_attr_in6_alarm.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200746 goto exit_remove;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 } else {
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200748 if ((err = device_create_file(&new_client->dev,
749 &dev_attr_fan1_input))
750 || (err = device_create_file(&new_client->dev,
751 &dev_attr_fan1_min))
752 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200753 &dev_attr_fan1_div))
754 || (err = device_create_file(&new_client->dev,
755 &sensor_dev_attr_fan1_alarm.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200756 goto exit_remove;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 }
758
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200759 if (data->channel & CHAN_NO_FAN(1)) {
760 if ((err = device_create_file(&new_client->dev,
761 &dev_attr_in7_input))
762 || (err = device_create_file(&new_client->dev,
763 &dev_attr_in7_min))
764 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200765 &dev_attr_in7_max))
766 || (err = device_create_file(&new_client->dev,
767 &sensor_dev_attr_in7_alarm.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200768 goto exit_remove;
769 } else {
770 if ((err = device_create_file(&new_client->dev,
771 &dev_attr_fan2_input))
772 || (err = device_create_file(&new_client->dev,
773 &dev_attr_fan2_min))
774 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200775 &dev_attr_fan2_div))
776 || (err = device_create_file(&new_client->dev,
777 &sensor_dev_attr_fan2_alarm.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200778 goto exit_remove;
779 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
781 if (data->channel & CHAN_TEMP3) {
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200782 if ((err = device_create_file(&new_client->dev,
783 &dev_attr_temp3_input))
784 || (err = device_create_file(&new_client->dev,
785 &dev_attr_temp3_max))
786 || (err = device_create_file(&new_client->dev,
787 &dev_attr_temp3_min))
788 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200789 &dev_attr_temp3_crit))
790 || (err = device_create_file(&new_client->dev,
791 &sensor_dev_attr_temp3_alarm.dev_attr))
792 || (err = device_create_file(&new_client->dev,
793 &sensor_dev_attr_temp3_fault.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200794 goto exit_remove;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 } else {
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200796 if ((err = device_create_file(&new_client->dev,
797 &dev_attr_in0_input))
798 || (err = device_create_file(&new_client->dev,
799 &dev_attr_in0_min))
800 || (err = device_create_file(&new_client->dev,
801 &dev_attr_in0_max))
802 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200803 &sensor_dev_attr_in0_alarm.dev_attr))
804 || (err = device_create_file(&new_client->dev,
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200805 &dev_attr_in5_input))
806 || (err = device_create_file(&new_client->dev,
807 &dev_attr_in5_min))
808 || (err = device_create_file(&new_client->dev,
Jean Delvarec2803b92007-09-26 23:39:01 +0200809 &dev_attr_in5_max))
810 || (err = device_create_file(&new_client->dev,
811 &sensor_dev_attr_in5_alarm.dev_attr)))
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200812 goto exit_remove;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 }
814
815 if (!(data->channel & CHAN_NO_VID)) {
Jean Delvare8a665a02007-05-08 17:21:59 +0200816 data->vrm = vid_which_vrm();
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200817 if ((err = device_create_file(&new_client->dev,
818 &dev_attr_cpu0_vid))
819 || (err = device_create_file(&new_client->dev,
820 &dev_attr_vrm)))
821 goto exit_remove;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 }
823
Tony Jones1beeffe2007-08-20 13:46:20 -0700824 data->hwmon_dev = hwmon_device_register(&new_client->dev);
825 if (IS_ERR(data->hwmon_dev)) {
826 err = PTR_ERR(data->hwmon_dev);
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200827 goto exit_remove;
828 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829
830 return 0;
831
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200832exit_remove:
833 sysfs_remove_group(&new_client->dev.kobj, &lm87_group);
834 sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400835exit_detach:
836 i2c_detach_client(new_client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837exit_free:
838 kfree(data);
839exit:
840 return err;
841}
842
843static void lm87_init_client(struct i2c_client *client)
844{
845 struct lm87_data *data = i2c_get_clientdata(client);
846 u8 config;
847
848 data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849
850 config = lm87_read_value(client, LM87_REG_CONFIG);
851 if (!(config & 0x01)) {
852 int i;
853
854 /* Limits are left uninitialized after power-up */
855 for (i = 1; i < 6; i++) {
856 lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00);
857 lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF);
858 }
859 for (i = 0; i < 2; i++) {
860 lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F);
861 lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00);
862 lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00);
863 lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF);
864 }
865 if (data->channel & CHAN_TEMP3) {
866 lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F);
867 lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00);
868 } else {
869 lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00);
870 lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF);
871 }
872 }
873 if ((config & 0x81) != 0x01) {
874 /* Start monitoring */
875 lm87_write_value(client, LM87_REG_CONFIG,
876 (config & 0xF7) | 0x01);
877 }
878}
879
880static int lm87_detach_client(struct i2c_client *client)
881{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400882 struct lm87_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 int err;
884
Tony Jones1beeffe2007-08-20 13:46:20 -0700885 hwmon_device_unregister(data->hwmon_dev);
Mark M. Hoffman0501a382006-09-24 21:14:35 +0200886 sysfs_remove_group(&client->dev.kobj, &lm87_group);
887 sysfs_remove_group(&client->dev.kobj, &lm87_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400888
Jean Delvare7bef5592005-07-27 22:14:49 +0200889 if ((err = i2c_detach_client(client)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400892 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 return 0;
894}
895
896static struct lm87_data *lm87_update_device(struct device *dev)
897{
898 struct i2c_client *client = to_i2c_client(dev);
899 struct lm87_data *data = i2c_get_clientdata(client);
900
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100901 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
903 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
904 int i, j;
905
906 dev_dbg(&client->dev, "Updating data.\n");
907
908 i = (data->channel & CHAN_TEMP3) ? 1 : 0;
909 j = (data->channel & CHAN_TEMP3) ? 5 : 6;
910 for (; i < j; i++) {
911 data->in[i] = lm87_read_value(client,
912 LM87_REG_IN(i));
913 data->in_min[i] = lm87_read_value(client,
914 LM87_REG_IN_MIN(i));
915 data->in_max[i] = lm87_read_value(client,
916 LM87_REG_IN_MAX(i));
917 }
918
919 for (i = 0; i < 2; i++) {
920 if (data->channel & CHAN_NO_FAN(i)) {
921 data->in[6+i] = lm87_read_value(client,
922 LM87_REG_AIN(i));
923 data->in_max[6+i] = lm87_read_value(client,
924 LM87_REG_AIN_MAX(i));
925 data->in_min[6+i] = lm87_read_value(client,
926 LM87_REG_AIN_MIN(i));
927
928 } else {
929 data->fan[i] = lm87_read_value(client,
930 LM87_REG_FAN(i));
931 data->fan_min[i] = lm87_read_value(client,
932 LM87_REG_FAN_MIN(i));
933 }
934 }
935
936 j = (data->channel & CHAN_TEMP3) ? 3 : 2;
937 for (i = 0 ; i < j; i++) {
938 data->temp[i] = lm87_read_value(client,
939 LM87_REG_TEMP[i]);
940 data->temp_high[i] = lm87_read_value(client,
941 LM87_REG_TEMP_HIGH[i]);
942 data->temp_low[i] = lm87_read_value(client,
943 LM87_REG_TEMP_LOW[i]);
944 }
945
946 i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK);
947 j = lm87_read_value(client, LM87_REG_TEMP_HW_INT);
948 data->temp_crit_int = min(i, j);
949
950 i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK);
951 j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT);
952 data->temp_crit_ext = min(i, j);
953
954 i = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
955 data->fan_div[0] = (i >> 4) & 0x03;
956 data->fan_div[1] = (i >> 6) & 0x03;
957 data->vid = (i & 0x0F)
958 | (lm87_read_value(client, LM87_REG_VID4) & 0x01)
959 << 4;
960
961 data->alarms = lm87_read_value(client, LM87_REG_ALARMS1)
962 | (lm87_read_value(client, LM87_REG_ALARMS2)
963 << 8);
964 data->aout = lm87_read_value(client, LM87_REG_AOUT);
965
966 data->last_updated = jiffies;
967 data->valid = 1;
968 }
969
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100970 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971
972 return data;
973}
974
975static int __init sensors_lm87_init(void)
976{
977 return i2c_add_driver(&lm87_driver);
978}
979
980static void __exit sensors_lm87_exit(void)
981{
982 i2c_del_driver(&lm87_driver);
983}
984
985MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others");
986MODULE_DESCRIPTION("LM87 driver");
987MODULE_LICENSE("GPL");
988
989module_init(sensors_lm87_init);
990module_exit(sensors_lm87_exit);