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>
8 * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
10 * Original port to Linux 2.6 by Jeff Oliver.
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
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
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)
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.
40 * This program is free software; you can redistribute it and/or modify
41 * it under the terms of the GNU General Public License as published by
42 * the Free Software Foundation; either version 2 of the License, or
43 * (at your option) any later version.
45 * This program is distributed in the hope that it will be useful,
46 * but WITHOUT ANY WARRANTY; without even the implied warranty of
47 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
48 * GNU General Public License for more details.
50 * You should have received a copy of the GNU General Public License
51 * along with this program; if not, write to the Free Software
52 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
55 #include <linux/module.h>
56 #include <linux/init.h>
57 #include <linux/slab.h>
58 #include <linux/jiffies.h>
59 #include <linux/i2c.h>
60 #include <linux/hwmon.h>
61 #include <linux/hwmon-vid.h>
62 #include <linux/err.h>
63 #include <linux/mutex.h>
67 * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e.
70 static unsigned short normal_i2c
[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END
};
76 I2C_CLIENT_INSMOD_1(lm87
);
83 #define LM87_REG_IN(nr) (0x20 + (nr))
84 #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2)
85 #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2)
87 #define LM87_REG_AIN(nr) (0x28 + (nr))
88 #define LM87_REG_AIN_MIN(nr) (0x1A + (nr))
89 #define LM87_REG_AIN_MAX(nr) (0x3B + (nr))
91 static u8 LM87_REG_TEMP
[3] = { 0x27, 0x26, 0x20 };
92 static u8 LM87_REG_TEMP_HIGH
[3] = { 0x39, 0x37, 0x2B };
93 static u8 LM87_REG_TEMP_LOW
[3] = { 0x3A, 0x38, 0x2C };
95 #define LM87_REG_TEMP_HW_INT_LOCK 0x13
96 #define LM87_REG_TEMP_HW_EXT_LOCK 0x14
97 #define LM87_REG_TEMP_HW_INT 0x17
98 #define LM87_REG_TEMP_HW_EXT 0x18
101 #define LM87_REG_FAN(nr) (0x28 + (nr))
102 #define LM87_REG_FAN_MIN(nr) (0x3B + (nr))
103 #define LM87_REG_AOUT 0x19
105 #define LM87_REG_CONFIG 0x40
106 #define LM87_REG_CHANNEL_MODE 0x16
107 #define LM87_REG_VID_FAN_DIV 0x47
108 #define LM87_REG_VID4 0x49
110 #define LM87_REG_ALARMS1 0x41
111 #define LM87_REG_ALARMS2 0x42
113 #define LM87_REG_COMPANY_ID 0x3E
114 #define LM87_REG_REVISION 0x3F
117 * Conversions and various macros
118 * The LM87 uses signed 8-bit values for temperatures.
121 #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192)
122 #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \
123 (val) * 192 >= (scale) * 255 ? 255 : \
124 ((val) * 192 + (scale)/2) / (scale))
126 #define TEMP_FROM_REG(reg) ((reg) * 1000)
127 #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \
128 (val) >= 126500 ? 127 : \
129 (((val) < 0 ? (val)-500 : (val)+500) / 1000))
131 #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \
132 1350000 + (reg)*(div) / 2) / ((reg)*(div))
133 #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \
134 (1350000 + (val)*(div) / 2) / ((val)*(div)))
136 #define FAN_DIV_FROM_REG(reg) (1 << (reg))
138 /* analog out is 9.80mV/LSB */
139 #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10)
140 #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \
141 (val) >= 2500 ? 255 : \
142 ((val) * 10 + 49) / 98)
145 #define CHAN_NO_FAN(nr) (1 << (nr))
146 #define CHAN_TEMP3 (1 << 2)
147 #define CHAN_VCC_5V (1 << 3)
148 #define CHAN_NO_VID (1 << 8)
151 * Functions declaration
154 static int lm87_attach_adapter(struct i2c_adapter
*adapter
);
155 static int lm87_detect(struct i2c_adapter
*adapter
, int address
, int kind
);
156 static void lm87_init_client(struct i2c_client
*client
);
157 static int lm87_detach_client(struct i2c_client
*client
);
158 static struct lm87_data
*lm87_update_device(struct device
*dev
);
161 * Driver data (common to all clients)
164 static struct i2c_driver lm87_driver
= {
168 .id
= I2C_DRIVERID_LM87
,
169 .attach_adapter
= lm87_attach_adapter
,
170 .detach_client
= lm87_detach_client
,
174 * Client data (each client gets its own)
178 struct i2c_client client
;
179 struct class_device
*class_dev
;
180 struct mutex update_lock
;
181 char valid
; /* zero until following fields are valid */
182 unsigned long last_updated
; /* In jiffies */
184 u8 channel
; /* register value */
186 u8 in
[8]; /* register value */
187 u8 in_max
[8]; /* register value */
188 u8 in_min
[8]; /* register value */
191 s8 temp
[3]; /* register value */
192 s8 temp_high
[3]; /* register value */
193 s8 temp_low
[3]; /* register value */
194 s8 temp_crit_int
; /* min of two register values */
195 s8 temp_crit_ext
; /* min of two register values */
197 u8 fan
[2]; /* register value */
198 u8 fan_min
[2]; /* register value */
199 u8 fan_div
[2]; /* register value, shifted right */
200 u8 aout
; /* register value */
202 u16 alarms
; /* register values, combined */
203 u8 vid
; /* register values, combined */
211 static inline int lm87_read_value(struct i2c_client
*client
, u8 reg
)
213 return i2c_smbus_read_byte_data(client
, reg
);
216 static inline int lm87_write_value(struct i2c_client
*client
, u8 reg
, u8 value
)
218 return i2c_smbus_write_byte_data(client
, reg
, value
);
221 #define show_in(offset) \
222 static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
224 struct lm87_data *data = lm87_update_device(dev); \
225 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
226 data->in_scale[offset])); \
228 static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
230 struct lm87_data *data = lm87_update_device(dev); \
231 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
232 data->in_scale[offset])); \
234 static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
236 struct lm87_data *data = lm87_update_device(dev); \
237 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
238 data->in_scale[offset])); \
240 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
241 show_in##offset##_input, NULL);
251 static void set_in_min(struct device
*dev
, const char *buf
, int nr
)
253 struct i2c_client
*client
= to_i2c_client(dev
);
254 struct lm87_data
*data
= i2c_get_clientdata(client
);
255 long val
= simple_strtol(buf
, NULL
, 10);
257 mutex_lock(&data
->update_lock
);
258 data
->in_min
[nr
] = IN_TO_REG(val
, data
->in_scale
[nr
]);
259 lm87_write_value(client
, nr
<6 ? LM87_REG_IN_MIN(nr
) :
260 LM87_REG_AIN_MIN(nr
-6), data
->in_min
[nr
]);
261 mutex_unlock(&data
->update_lock
);
264 static void set_in_max(struct device
*dev
, const char *buf
, int nr
)
266 struct i2c_client
*client
= to_i2c_client(dev
);
267 struct lm87_data
*data
= i2c_get_clientdata(client
);
268 long val
= simple_strtol(buf
, NULL
, 10);
270 mutex_lock(&data
->update_lock
);
271 data
->in_max
[nr
] = IN_TO_REG(val
, data
->in_scale
[nr
]);
272 lm87_write_value(client
, nr
<6 ? LM87_REG_IN_MAX(nr
) :
273 LM87_REG_AIN_MAX(nr
-6), data
->in_max
[nr
]);
274 mutex_unlock(&data
->update_lock
);
277 #define set_in(offset) \
278 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \
279 const char *buf, size_t count) \
281 set_in_min(dev, buf, offset); \
284 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \
285 const char *buf, size_t count) \
287 set_in_max(dev, buf, offset); \
290 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
291 show_in##offset##_min, set_in##offset##_min); \
292 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
293 show_in##offset##_max, set_in##offset##_max);
303 #define show_temp(offset) \
304 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
306 struct lm87_data *data = lm87_update_device(dev); \
307 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
309 static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \
311 struct lm87_data *data = lm87_update_device(dev); \
312 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \
314 static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \
316 struct lm87_data *data = lm87_update_device(dev); \
317 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \
319 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
320 show_temp##offset##_input, NULL);
325 static void set_temp_low(struct device
*dev
, const char *buf
, int nr
)
327 struct i2c_client
*client
= to_i2c_client(dev
);
328 struct lm87_data
*data
= i2c_get_clientdata(client
);
329 long val
= simple_strtol(buf
, NULL
, 10);
331 mutex_lock(&data
->update_lock
);
332 data
->temp_low
[nr
] = TEMP_TO_REG(val
);
333 lm87_write_value(client
, LM87_REG_TEMP_LOW
[nr
], data
->temp_low
[nr
]);
334 mutex_unlock(&data
->update_lock
);
337 static void set_temp_high(struct device
*dev
, const char *buf
, int nr
)
339 struct i2c_client
*client
= to_i2c_client(dev
);
340 struct lm87_data
*data
= i2c_get_clientdata(client
);
341 long val
= simple_strtol(buf
, NULL
, 10);
343 mutex_lock(&data
->update_lock
);
344 data
->temp_high
[nr
] = TEMP_TO_REG(val
);
345 lm87_write_value(client
, LM87_REG_TEMP_HIGH
[nr
], data
->temp_high
[nr
]);
346 mutex_unlock(&data
->update_lock
);
349 #define set_temp(offset) \
350 static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \
351 const char *buf, size_t count) \
353 set_temp_low(dev, buf, offset-1); \
356 static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \
357 const char *buf, size_t count) \
359 set_temp_high(dev, buf, offset-1); \
362 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
363 show_temp##offset##_high, set_temp##offset##_high); \
364 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
365 show_temp##offset##_low, set_temp##offset##_low);
370 static ssize_t
show_temp_crit_int(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
372 struct lm87_data
*data
= lm87_update_device(dev
);
373 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_crit_int
));
376 static ssize_t
show_temp_crit_ext(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
378 struct lm87_data
*data
= lm87_update_device(dev
);
379 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_crit_ext
));
382 static DEVICE_ATTR(temp1_crit
, S_IRUGO
, show_temp_crit_int
, NULL
);
383 static DEVICE_ATTR(temp2_crit
, S_IRUGO
, show_temp_crit_ext
, NULL
);
384 static DEVICE_ATTR(temp3_crit
, S_IRUGO
, show_temp_crit_ext
, NULL
);
386 #define show_fan(offset) \
387 static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
389 struct lm87_data *data = lm87_update_device(dev); \
390 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \
391 FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \
393 static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
395 struct lm87_data *data = lm87_update_device(dev); \
396 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \
397 FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \
399 static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
401 struct lm87_data *data = lm87_update_device(dev); \
402 return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \
404 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
405 show_fan##offset##_input, NULL);
409 static void set_fan_min(struct device
*dev
, const char *buf
, int nr
)
411 struct i2c_client
*client
= to_i2c_client(dev
);
412 struct lm87_data
*data
= i2c_get_clientdata(client
);
413 long val
= simple_strtol(buf
, NULL
, 10);
415 mutex_lock(&data
->update_lock
);
416 data
->fan_min
[nr
] = FAN_TO_REG(val
,
417 FAN_DIV_FROM_REG(data
->fan_div
[nr
]));
418 lm87_write_value(client
, LM87_REG_FAN_MIN(nr
), data
->fan_min
[nr
]);
419 mutex_unlock(&data
->update_lock
);
422 /* Note: we save and restore the fan minimum here, because its value is
423 determined in part by the fan clock divider. This follows the principle
424 of least surprise; the user doesn't expect the fan minimum to change just
425 because the divider changed. */
426 static ssize_t
set_fan_div(struct device
*dev
, const char *buf
,
427 size_t count
, int nr
)
429 struct i2c_client
*client
= to_i2c_client(dev
);
430 struct lm87_data
*data
= i2c_get_clientdata(client
);
431 long val
= simple_strtol(buf
, NULL
, 10);
435 mutex_lock(&data
->update_lock
);
436 min
= FAN_FROM_REG(data
->fan_min
[nr
],
437 FAN_DIV_FROM_REG(data
->fan_div
[nr
]));
440 case 1: data
->fan_div
[nr
] = 0; break;
441 case 2: data
->fan_div
[nr
] = 1; break;
442 case 4: data
->fan_div
[nr
] = 2; break;
443 case 8: data
->fan_div
[nr
] = 3; break;
445 mutex_unlock(&data
->update_lock
);
449 reg
= lm87_read_value(client
, LM87_REG_VID_FAN_DIV
);
452 reg
= (reg
& 0xCF) | (data
->fan_div
[0] << 4);
455 reg
= (reg
& 0x3F) | (data
->fan_div
[1] << 6);
458 lm87_write_value(client
, LM87_REG_VID_FAN_DIV
, reg
);
460 data
->fan_min
[nr
] = FAN_TO_REG(min
, val
);
461 lm87_write_value(client
, LM87_REG_FAN_MIN(nr
),
463 mutex_unlock(&data
->update_lock
);
468 #define set_fan(offset) \
469 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
472 set_fan_min(dev, buf, offset-1); \
475 static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \
478 return set_fan_div(dev, buf, count, offset-1); \
480 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
481 show_fan##offset##_min, set_fan##offset##_min); \
482 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
483 show_fan##offset##_div, set_fan##offset##_div);
487 static ssize_t
show_alarms(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
489 struct lm87_data
*data
= lm87_update_device(dev
);
490 return sprintf(buf
, "%d\n", data
->alarms
);
492 static DEVICE_ATTR(alarms
, S_IRUGO
, show_alarms
, NULL
);
494 static ssize_t
show_vid(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
496 struct lm87_data
*data
= lm87_update_device(dev
);
497 return sprintf(buf
, "%d\n", vid_from_reg(data
->vid
, data
->vrm
));
499 static DEVICE_ATTR(cpu0_vid
, S_IRUGO
, show_vid
, NULL
);
501 static ssize_t
show_vrm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
503 struct lm87_data
*data
= lm87_update_device(dev
);
504 return sprintf(buf
, "%d\n", data
->vrm
);
506 static ssize_t
set_vrm(struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
508 struct i2c_client
*client
= to_i2c_client(dev
);
509 struct lm87_data
*data
= i2c_get_clientdata(client
);
510 data
->vrm
= simple_strtoul(buf
, NULL
, 10);
513 static DEVICE_ATTR(vrm
, S_IRUGO
| S_IWUSR
, show_vrm
, set_vrm
);
515 static ssize_t
show_aout(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
517 struct lm87_data
*data
= lm87_update_device(dev
);
518 return sprintf(buf
, "%d\n", AOUT_FROM_REG(data
->aout
));
520 static ssize_t
set_aout(struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
522 struct i2c_client
*client
= to_i2c_client(dev
);
523 struct lm87_data
*data
= i2c_get_clientdata(client
);
524 long val
= simple_strtol(buf
, NULL
, 10);
526 mutex_lock(&data
->update_lock
);
527 data
->aout
= AOUT_TO_REG(val
);
528 lm87_write_value(client
, LM87_REG_AOUT
, data
->aout
);
529 mutex_unlock(&data
->update_lock
);
532 static DEVICE_ATTR(aout_output
, S_IRUGO
| S_IWUSR
, show_aout
, set_aout
);
538 static int lm87_attach_adapter(struct i2c_adapter
*adapter
)
540 if (!(adapter
->class & I2C_CLASS_HWMON
))
542 return i2c_probe(adapter
, &addr_data
, lm87_detect
);
546 * The following function does more than just detection. If detection
547 * succeeds, it also registers the new chip.
549 static int lm87_detect(struct i2c_adapter
*adapter
, int address
, int kind
)
551 struct i2c_client
*new_client
;
552 struct lm87_data
*data
;
555 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
558 if (!(data
= kzalloc(sizeof(struct lm87_data
), GFP_KERNEL
))) {
563 /* The common I2C client data is placed right before the
564 LM87-specific data. */
565 new_client
= &data
->client
;
566 i2c_set_clientdata(new_client
, data
);
567 new_client
->addr
= address
;
568 new_client
->adapter
= adapter
;
569 new_client
->driver
= &lm87_driver
;
570 new_client
->flags
= 0;
572 /* Default to an LM87 if forced */
576 /* Now, we do the remaining detection. */
578 u8 rev
= lm87_read_value(new_client
, LM87_REG_REVISION
);
580 if (rev
< 0x01 || rev
> 0x08
581 || (lm87_read_value(new_client
, LM87_REG_CONFIG
) & 0x80)
582 || lm87_read_value(new_client
, LM87_REG_COMPANY_ID
) != 0x02) {
583 dev_dbg(&adapter
->dev
,
584 "LM87 detection failed at 0x%02x.\n",
590 /* We can fill in the remaining client fields */
591 strlcpy(new_client
->name
, "lm87", I2C_NAME_SIZE
);
593 mutex_init(&data
->update_lock
);
595 /* Tell the I2C layer a new client has arrived */
596 if ((err
= i2c_attach_client(new_client
)))
599 /* Initialize the LM87 chip */
600 lm87_init_client(new_client
);
602 data
->in_scale
[0] = 2500;
603 data
->in_scale
[1] = 2700;
604 data
->in_scale
[2] = (data
->channel
& CHAN_VCC_5V
) ? 5000 : 3300;
605 data
->in_scale
[3] = 5000;
606 data
->in_scale
[4] = 12000;
607 data
->in_scale
[5] = 2700;
608 data
->in_scale
[6] = 1875;
609 data
->in_scale
[7] = 1875;
611 /* Register sysfs hooks */
612 data
->class_dev
= hwmon_device_register(&new_client
->dev
);
613 if (IS_ERR(data
->class_dev
)) {
614 err
= PTR_ERR(data
->class_dev
);
618 device_create_file(&new_client
->dev
, &dev_attr_in1_input
);
619 device_create_file(&new_client
->dev
, &dev_attr_in1_min
);
620 device_create_file(&new_client
->dev
, &dev_attr_in1_max
);
621 device_create_file(&new_client
->dev
, &dev_attr_in2_input
);
622 device_create_file(&new_client
->dev
, &dev_attr_in2_min
);
623 device_create_file(&new_client
->dev
, &dev_attr_in2_max
);
624 device_create_file(&new_client
->dev
, &dev_attr_in3_input
);
625 device_create_file(&new_client
->dev
, &dev_attr_in3_min
);
626 device_create_file(&new_client
->dev
, &dev_attr_in3_max
);
627 device_create_file(&new_client
->dev
, &dev_attr_in4_input
);
628 device_create_file(&new_client
->dev
, &dev_attr_in4_min
);
629 device_create_file(&new_client
->dev
, &dev_attr_in4_max
);
631 if (data
->channel
& CHAN_NO_FAN(0)) {
632 device_create_file(&new_client
->dev
, &dev_attr_in6_input
);
633 device_create_file(&new_client
->dev
, &dev_attr_in6_min
);
634 device_create_file(&new_client
->dev
, &dev_attr_in6_max
);
636 device_create_file(&new_client
->dev
, &dev_attr_fan1_input
);
637 device_create_file(&new_client
->dev
, &dev_attr_fan1_min
);
638 device_create_file(&new_client
->dev
, &dev_attr_fan1_div
);
640 if (data
->channel
& CHAN_NO_FAN(1)) {
641 device_create_file(&new_client
->dev
, &dev_attr_in7_input
);
642 device_create_file(&new_client
->dev
, &dev_attr_in7_min
);
643 device_create_file(&new_client
->dev
, &dev_attr_in7_max
);
645 device_create_file(&new_client
->dev
, &dev_attr_fan2_input
);
646 device_create_file(&new_client
->dev
, &dev_attr_fan2_min
);
647 device_create_file(&new_client
->dev
, &dev_attr_fan2_div
);
650 device_create_file(&new_client
->dev
, &dev_attr_temp1_input
);
651 device_create_file(&new_client
->dev
, &dev_attr_temp1_max
);
652 device_create_file(&new_client
->dev
, &dev_attr_temp1_min
);
653 device_create_file(&new_client
->dev
, &dev_attr_temp1_crit
);
654 device_create_file(&new_client
->dev
, &dev_attr_temp2_input
);
655 device_create_file(&new_client
->dev
, &dev_attr_temp2_max
);
656 device_create_file(&new_client
->dev
, &dev_attr_temp2_min
);
657 device_create_file(&new_client
->dev
, &dev_attr_temp2_crit
);
659 if (data
->channel
& CHAN_TEMP3
) {
660 device_create_file(&new_client
->dev
, &dev_attr_temp3_input
);
661 device_create_file(&new_client
->dev
, &dev_attr_temp3_max
);
662 device_create_file(&new_client
->dev
, &dev_attr_temp3_min
);
663 device_create_file(&new_client
->dev
, &dev_attr_temp3_crit
);
665 device_create_file(&new_client
->dev
, &dev_attr_in0_input
);
666 device_create_file(&new_client
->dev
, &dev_attr_in0_min
);
667 device_create_file(&new_client
->dev
, &dev_attr_in0_max
);
668 device_create_file(&new_client
->dev
, &dev_attr_in5_input
);
669 device_create_file(&new_client
->dev
, &dev_attr_in5_min
);
670 device_create_file(&new_client
->dev
, &dev_attr_in5_max
);
673 if (!(data
->channel
& CHAN_NO_VID
)) {
674 device_create_file(&new_client
->dev
, &dev_attr_cpu0_vid
);
675 device_create_file(&new_client
->dev
, &dev_attr_vrm
);
678 device_create_file(&new_client
->dev
, &dev_attr_alarms
);
679 device_create_file(&new_client
->dev
, &dev_attr_aout_output
);
684 i2c_detach_client(new_client
);
691 static void lm87_init_client(struct i2c_client
*client
)
693 struct lm87_data
*data
= i2c_get_clientdata(client
);
696 data
->channel
= lm87_read_value(client
, LM87_REG_CHANNEL_MODE
);
697 data
->vrm
= vid_which_vrm();
699 config
= lm87_read_value(client
, LM87_REG_CONFIG
);
700 if (!(config
& 0x01)) {
703 /* Limits are left uninitialized after power-up */
704 for (i
= 1; i
< 6; i
++) {
705 lm87_write_value(client
, LM87_REG_IN_MIN(i
), 0x00);
706 lm87_write_value(client
, LM87_REG_IN_MAX(i
), 0xFF);
708 for (i
= 0; i
< 2; i
++) {
709 lm87_write_value(client
, LM87_REG_TEMP_HIGH
[i
], 0x7F);
710 lm87_write_value(client
, LM87_REG_TEMP_LOW
[i
], 0x00);
711 lm87_write_value(client
, LM87_REG_AIN_MIN(i
), 0x00);
712 lm87_write_value(client
, LM87_REG_AIN_MAX(i
), 0xFF);
714 if (data
->channel
& CHAN_TEMP3
) {
715 lm87_write_value(client
, LM87_REG_TEMP_HIGH
[2], 0x7F);
716 lm87_write_value(client
, LM87_REG_TEMP_LOW
[2], 0x00);
718 lm87_write_value(client
, LM87_REG_IN_MIN(0), 0x00);
719 lm87_write_value(client
, LM87_REG_IN_MAX(0), 0xFF);
722 if ((config
& 0x81) != 0x01) {
723 /* Start monitoring */
724 lm87_write_value(client
, LM87_REG_CONFIG
,
725 (config
& 0xF7) | 0x01);
729 static int lm87_detach_client(struct i2c_client
*client
)
731 struct lm87_data
*data
= i2c_get_clientdata(client
);
734 hwmon_device_unregister(data
->class_dev
);
736 if ((err
= i2c_detach_client(client
)))
743 static struct lm87_data
*lm87_update_device(struct device
*dev
)
745 struct i2c_client
*client
= to_i2c_client(dev
);
746 struct lm87_data
*data
= i2c_get_clientdata(client
);
748 mutex_lock(&data
->update_lock
);
750 if (time_after(jiffies
, data
->last_updated
+ HZ
) || !data
->valid
) {
753 dev_dbg(&client
->dev
, "Updating data.\n");
755 i
= (data
->channel
& CHAN_TEMP3
) ? 1 : 0;
756 j
= (data
->channel
& CHAN_TEMP3
) ? 5 : 6;
758 data
->in
[i
] = lm87_read_value(client
,
760 data
->in_min
[i
] = lm87_read_value(client
,
762 data
->in_max
[i
] = lm87_read_value(client
,
766 for (i
= 0; i
< 2; i
++) {
767 if (data
->channel
& CHAN_NO_FAN(i
)) {
768 data
->in
[6+i
] = lm87_read_value(client
,
770 data
->in_max
[6+i
] = lm87_read_value(client
,
771 LM87_REG_AIN_MAX(i
));
772 data
->in_min
[6+i
] = lm87_read_value(client
,
773 LM87_REG_AIN_MIN(i
));
776 data
->fan
[i
] = lm87_read_value(client
,
778 data
->fan_min
[i
] = lm87_read_value(client
,
779 LM87_REG_FAN_MIN(i
));
783 j
= (data
->channel
& CHAN_TEMP3
) ? 3 : 2;
784 for (i
= 0 ; i
< j
; i
++) {
785 data
->temp
[i
] = lm87_read_value(client
,
787 data
->temp_high
[i
] = lm87_read_value(client
,
788 LM87_REG_TEMP_HIGH
[i
]);
789 data
->temp_low
[i
] = lm87_read_value(client
,
790 LM87_REG_TEMP_LOW
[i
]);
793 i
= lm87_read_value(client
, LM87_REG_TEMP_HW_INT_LOCK
);
794 j
= lm87_read_value(client
, LM87_REG_TEMP_HW_INT
);
795 data
->temp_crit_int
= min(i
, j
);
797 i
= lm87_read_value(client
, LM87_REG_TEMP_HW_EXT_LOCK
);
798 j
= lm87_read_value(client
, LM87_REG_TEMP_HW_EXT
);
799 data
->temp_crit_ext
= min(i
, j
);
801 i
= lm87_read_value(client
, LM87_REG_VID_FAN_DIV
);
802 data
->fan_div
[0] = (i
>> 4) & 0x03;
803 data
->fan_div
[1] = (i
>> 6) & 0x03;
804 data
->vid
= (i
& 0x0F)
805 | (lm87_read_value(client
, LM87_REG_VID4
) & 0x01)
808 data
->alarms
= lm87_read_value(client
, LM87_REG_ALARMS1
)
809 | (lm87_read_value(client
, LM87_REG_ALARMS2
)
811 data
->aout
= lm87_read_value(client
, LM87_REG_AOUT
);
813 data
->last_updated
= jiffies
;
817 mutex_unlock(&data
->update_lock
);
822 static int __init
sensors_lm87_init(void)
824 return i2c_add_driver(&lm87_driver
);
827 static void __exit
sensors_lm87_exit(void)
829 i2c_del_driver(&lm87_driver
);
832 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others");
833 MODULE_DESCRIPTION("LM87 driver");
834 MODULE_LICENSE("GPL");
836 module_init(sensors_lm87_init
);
837 module_exit(sensors_lm87_exit
);