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hwmon: (it87) Move conversion functions
[mirror_ubuntu-zesty-kernel.git] / drivers / hwmon / it87.c
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1da177e4 1/*
5f2dc798
JD		 2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring.
4 *
5 * The IT8705F is an LPC-based Super I/O part that contains UARTs, a
6 * parallel port, an IR port, a MIDI port, a floppy controller, etc., in
7 * addition to an Environment Controller (Enhanced Hardware Monitor and
8 * Fan Controller)
9 *
10 * This driver supports only the Environment Controller in the IT8705F and
11 * similar parts. The other devices are supported by different drivers.
12 *
13 * Supports: IT8705F Super I/O chip w/LPC interface
14 * IT8712F Super I/O chip w/LPC interface
15 * IT8716F Super I/O chip w/LPC interface
16 * IT8718F Super I/O chip w/LPC interface
17 * IT8720F Super I/O chip w/LPC interface
18 * IT8726F Super I/O chip w/LPC interface
19 * Sis950 A clone of the IT8705F
20 *
21 * Copyright (C) 2001 Chris Gauthron
22 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
23 *
24 * This program is free software; you can redistribute it and/or modify
25 * it under the terms of the GNU General Public License as published by
26 * the Free Software Foundation; either version 2 of the License, or
27 * (at your option) any later version.
28 *
29 * This program is distributed in the hope that it will be useful,
30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * GNU General Public License for more details.
33 *
34 * You should have received a copy of the GNU General Public License
35 * along with this program; if not, write to the Free Software
36 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
37 */
1da177e4 38
1da177e4
LT		 39#include <linux/module.h>
40#include <linux/init.h>
41#include <linux/slab.h>
42#include <linux/jiffies.h>
b74f3fdd 43#include <linux/platform_device.h>
943b0830 44#include <linux/hwmon.h>
303760b4
JD		 45#include <linux/hwmon-sysfs.h>
46#include <linux/hwmon-vid.h>
943b0830 47#include <linux/err.h>
9a61bf63 48#include <linux/mutex.h>
87808be4 49#include <linux/sysfs.h>
98dd22c3
JD		 50#include <linux/string.h>
51#include <linux/dmi.h>
b9acb64a 52#include <linux/acpi.h>
6055fae8 53#include <linux/io.h>
1da177e4 54
b74f3fdd 55#define DRVNAME "it87"
1da177e4 56
b4da93e4 57enum chips { it87, it8712, it8716, it8718, it8720 };
1da177e4 58
67b671bc
JD		 59static unsigned short force_id;
60module_param(force_id, ushort, 0);
61MODULE_PARM_DESC(force_id, "Override the detected device ID");
62
b74f3fdd 63static struct platform_device *pdev;
64
1da177e4
LT		 65#define REG 0x2e /* The register to read/write */
66#define DEV 0x07 /* Register: Logical device select */
67#define VAL 0x2f /* The value to read/write */
68#define PME 0x04 /* The device with the fan registers in it */
b4da93e4
JMS		 69
70/* The device with the IT8718F/IT8720F VID value in it */
71#define GPIO 0x07
72
1da177e4
LT		 73#define DEVID 0x20 /* Register: Device ID */
74#define DEVREV 0x22 /* Register: Device Revision */
75
76static inline int
77superio_inb(int reg)
78{
79 outb(reg, REG);
80 return inb(VAL);
81}
82
436cad2a
JD		 83static inline void
84superio_outb(int reg, int val)
85{
86 outb(reg, REG);
87 outb(val, VAL);
88}
89
1da177e4
LT		 90static int superio_inw(int reg)
91{
92 int val;
93 outb(reg++, REG);
94 val = inb(VAL) << 8;
95 outb(reg, REG);
96 val |= inb(VAL);
97 return val;
98}
99
100static inline void
87673dd7 101superio_select(int ldn)
1da177e4
LT		 102{
103 outb(DEV, REG);
87673dd7 104 outb(ldn, VAL);
1da177e4
LT		 105}
106
107static inline void
108superio_enter(void)
109{
110 outb(0x87, REG);
111 outb(0x01, REG);
112 outb(0x55, REG);
113 outb(0x55, REG);
114}
115
116static inline void
117superio_exit(void)
118{
119 outb(0x02, REG);
120 outb(0x02, VAL);
121}
122
87673dd7 123/* Logical device 4 registers */
1da177e4
LT		 124#define IT8712F_DEVID 0x8712
125#define IT8705F_DEVID 0x8705
17d648bf 126#define IT8716F_DEVID 0x8716
87673dd7 127#define IT8718F_DEVID 0x8718
b4da93e4 128#define IT8720F_DEVID 0x8720
08a8f6e9 129#define IT8726F_DEVID 0x8726
1da177e4
LT		 130#define IT87_ACT_REG 0x30
131#define IT87_BASE_REG 0x60
132
87673dd7 133/* Logical device 7 registers (IT8712F and later) */
895ff267 134#define IT87_SIO_GPIO3_REG 0x27
591ec650 135#define IT87_SIO_GPIO5_REG 0x29
87673dd7
JD		 136#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
137#define IT87_SIO_VID_REG 0xfc /* VID value */
d9b327c3 138#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
87673dd7 139
1da177e4
LT		 140/* Update battery voltage after every reading if true */
141static int update_vbat;
142
143/* Not all BIOSes properly configure the PWM registers */
144static int fix_pwm_polarity;
145
1da177e4
LT		 146/* Many IT87 constants specified below */
147
148/* Length of ISA address segment */
149#define IT87_EXTENT 8
150
87b4b663
BH		 151/* Length of ISA address segment for Environmental Controller */
152#define IT87_EC_EXTENT 2
153
154/* Offset of EC registers from ISA base address */
155#define IT87_EC_OFFSET 5
156
157/* Where are the ISA address/data registers relative to the EC base address */
158#define IT87_ADDR_REG_OFFSET 0
159#define IT87_DATA_REG_OFFSET 1
1da177e4
LT		 160
161/*----- The IT87 registers -----*/
162
163#define IT87_REG_CONFIG 0x00
164
165#define IT87_REG_ALARM1 0x01
166#define IT87_REG_ALARM2 0x02
167#define IT87_REG_ALARM3 0x03
168
b4da93e4
JMS		 169/* The IT8718F and IT8720F have the VID value in a different register, in
170 Super-I/O configuration space. */
1da177e4 171#define IT87_REG_VID 0x0a
0475169c
AP		 172/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
173 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
174 mode. */
1da177e4 175#define IT87_REG_FAN_DIV 0x0b
17d648bf 176#define IT87_REG_FAN_16BIT 0x0c
1da177e4
LT		 177
178/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
179
c7f1f716
JD		 180static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
181static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
182static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
183static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
1da177e4
LT		 184#define IT87_REG_FAN_MAIN_CTRL 0x13
185#define IT87_REG_FAN_CTL 0x14
186#define IT87_REG_PWM(nr) (0x15 + (nr))
187
188#define IT87_REG_VIN(nr) (0x20 + (nr))
189#define IT87_REG_TEMP(nr) (0x29 + (nr))
190
191#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
192#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
193#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
194#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
195
1da177e4
LT		 196#define IT87_REG_VIN_ENABLE 0x50
197#define IT87_REG_TEMP_ENABLE 0x51
d9b327c3 198#define IT87_REG_BEEP_ENABLE 0x5c
1da177e4
LT		 199
200#define IT87_REG_CHIPID 0x58
201
4f3f51bc
JD		 202#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
203#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
204
1da177e4 205
b74f3fdd 206struct it87_sio_data {
207 enum chips type;
208 /* Values read from Super-I/O config space */
0475169c 209 u8 revision;
b74f3fdd 210 u8 vid_value;
d9b327c3 211 u8 beep_pin;
738e5e05 212 u8 internal; /* Internal sensors can be labeled */
591ec650 213 /* Features skipped based on config or DMI */
895ff267 214 u8 skip_vid;
591ec650 215 u8 skip_fan;
98dd22c3 216 u8 skip_pwm;
b74f3fdd 217};
218
ed6bafbf
JD		 219/* For each registered chip, we need to keep some data in memory.
220 The structure is dynamically allocated. */
1da177e4 221struct it87_data {
1beeffe4 222 struct device *hwmon_dev;
1da177e4 223 enum chips type;
0475169c 224 u8 revision;
1da177e4 225
b74f3fdd 226 unsigned short addr;
227 const char *name;
9a61bf63 228 struct mutex update_lock;
1da177e4
LT		 229 char valid; /* !=0 if following fields are valid */
230 unsigned long last_updated; /* In jiffies */
231
232 u8 in[9]; /* Register value */
3543a53f
JD		 233 u8 in_max[8]; /* Register value */
234 u8 in_min[8]; /* Register value */
9060f8bd 235 u8 has_fan; /* Bitfield, fans enabled */
c7f1f716
JD		 236 u16 fan[5]; /* Register values, possibly combined */
237 u16 fan_min[5]; /* Register values, possibly combined */
e267d250
JD		 238 s8 temp[3]; /* Register value */
239 s8 temp_high[3]; /* Register value */
240 s8 temp_low[3]; /* Register value */
1da177e4
LT		 241 u8 sensor; /* Register value */
242 u8 fan_div[3]; /* Register encoding, shifted right */
243 u8 vid; /* Register encoding, combined */
a7be58a1 244 u8 vrm;
1da177e4 245 u32 alarms; /* Register encoding, combined */
d9b327c3 246 u8 beeps; /* Register encoding */
1da177e4 247 u8 fan_main_ctrl; /* Register value */
f8d0c19a 248 u8 fan_ctl; /* Register value */
b99883dc
JD		 249
250 /* The following 3 arrays correspond to the same registers. The
251 * meaning of bits 6-0 depends on the value of bit 7, and we want
252 * to preserve settings on mode changes, so we have to track all
253 * values separately. */
254 u8 pwm_ctrl[3]; /* Register value */
255 u8 pwm_duty[3]; /* Manual PWM value set by user (bit 6-0) */
256 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
4f3f51bc
JD		 257
258 /* Automatic fan speed control registers */
259 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
260 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
1da177e4 261};
0df6454d
JD		 262
263#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8) / 16), 0, 255))
264#define IN_FROM_REG(val) ((val) * 16)
265
266static inline u8 FAN_TO_REG(long rpm, int div)
267{
268 if (rpm == 0)
269 return 255;
270 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
271 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
272 254);
273}
274
275static inline u16 FAN16_TO_REG(long rpm)
276{
277 if (rpm == 0)
278 return 0xffff;
279 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
280}
281
282#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
283 1350000 / ((val) * (div)))
284/* The divider is fixed to 2 in 16-bit mode */
285#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
286 1350000 / ((val) * 2))
287
288#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
289 ((val) + 500) / 1000), -128, 127))
290#define TEMP_FROM_REG(val) ((val) * 1000)
291
292#define PWM_TO_REG(val) ((val) >> 1)
293#define PWM_FROM_REG(val) (((val) & 0x7f) << 1)
294
295static int DIV_TO_REG(int val)
296{
297 int answer = 0;
298 while (answer < 7 && (val >>= 1))
299 answer++;
300 return answer;
301}
302#define DIV_FROM_REG(val) (1 << (val))
303
304static const unsigned int pwm_freq[8] = {
305 48000000 / 128,
306 24000000 / 128,
307 12000000 / 128,
308 8000000 / 128,
309 6000000 / 128,
310 3000000 / 128,
311 1500000 / 128,
312 750000 / 128,
313};
1da177e4 314
0475169c
AP		 315static inline int has_16bit_fans(const struct it87_data *data)
316{
816d8c6a 317 /* IT8705F Datasheet 0.4.1, 3h == Version G.
859b9ef3 318 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
816d8c6a
AP		 319 These are the first revisions with 16bit tachometer support. */
320 return (data->type == it87 && data->revision >= 0x03)
859b9ef3 321 || (data->type == it8712 && data->revision >= 0x08)
0475169c 322 || data->type == it8716
b4da93e4
JMS		 323 || data->type == it8718
324 || data->type == it8720;
0475169c 325}
1da177e4 326
4f3f51bc
JD		 327static inline int has_old_autopwm(const struct it87_data *data)
328{
329 /* The old automatic fan speed control interface is implemented
330 by IT8705F chips up to revision F and IT8712F chips up to
331 revision G. */
332 return (data->type == it87 && data->revision < 0x03)
333 || (data->type == it8712 && data->revision < 0x08);
334}
335
b74f3fdd 336static int it87_probe(struct platform_device *pdev);
d0546128 337static int __devexit it87_remove(struct platform_device *pdev);
1da177e4 338
b74f3fdd 339static int it87_read_value(struct it87_data *data, u8 reg);
340static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
1da177e4 341static struct it87_data *it87_update_device(struct device *dev);
b74f3fdd 342static int it87_check_pwm(struct device *dev);
343static void it87_init_device(struct platform_device *pdev);
1da177e4
LT		 344
345
b74f3fdd 346static struct platform_driver it87_driver = {
cdaf7934 347 .driver = {
87218842 348 .owner = THIS_MODULE,
b74f3fdd 349 .name = DRVNAME,
cdaf7934 350 },
b74f3fdd 351 .probe = it87_probe,
352 .remove = __devexit_p(it87_remove),
fde09509
JD		 353};
354
20ad93d4
JD		 355static ssize_t show_in(struct device *dev, struct device_attribute *attr,
356 char *buf)
1da177e4 357{
20ad93d4
JD		 358 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
359 int nr = sensor_attr->index;
360
1da177e4
LT		 361 struct it87_data *data = it87_update_device(dev);
362 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
363}
364
20ad93d4
JD		 365static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
366 char *buf)
1da177e4 367{
20ad93d4
JD		 368 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
369 int nr = sensor_attr->index;
370
1da177e4
LT		 371 struct it87_data *data = it87_update_device(dev);
372 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
373}
374
20ad93d4
JD		 375static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
376 char *buf)
1da177e4 377{
20ad93d4
JD		 378 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
379 int nr = sensor_attr->index;
380
1da177e4
LT		 381 struct it87_data *data = it87_update_device(dev);
382 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
383}
384
20ad93d4
JD		 385static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
386 const char *buf, size_t count)
1da177e4 387{
20ad93d4
JD		 388 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
389 int nr = sensor_attr->index;
390
b74f3fdd 391 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 392 unsigned long val;
393
394 if (strict_strtoul(buf, 10, &val) < 0)
395 return -EINVAL;
1da177e4 396
9a61bf63 397 mutex_lock(&data->update_lock);
1da177e4 398 data->in_min[nr] = IN_TO_REG(val);
b74f3fdd 399 it87_write_value(data, IT87_REG_VIN_MIN(nr),
1da177e4 400 data->in_min[nr]);
9a61bf63 401 mutex_unlock(&data->update_lock);
1da177e4
LT		 402 return count;
403}
20ad93d4
JD		 404static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
405 const char *buf, size_t count)
1da177e4 406{
20ad93d4
JD		 407 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
408 int nr = sensor_attr->index;
409
b74f3fdd 410 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 411 unsigned long val;
412
413 if (strict_strtoul(buf, 10, &val) < 0)
414 return -EINVAL;
1da177e4 415
9a61bf63 416 mutex_lock(&data->update_lock);
1da177e4 417 data->in_max[nr] = IN_TO_REG(val);
b74f3fdd 418 it87_write_value(data, IT87_REG_VIN_MAX(nr),
1da177e4 419 data->in_max[nr]);
9a61bf63 420 mutex_unlock(&data->update_lock);
1da177e4
LT		 421 return count;
422}
423
424#define show_in_offset(offset) \
20ad93d4
JD		 425static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
426 show_in, NULL, offset);
1da177e4
LT		 427
428#define limit_in_offset(offset) \
20ad93d4
JD		 429static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
430 show_in_min, set_in_min, offset); \
431static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
432 show_in_max, set_in_max, offset);
1da177e4
LT		 433
434show_in_offset(0);
435limit_in_offset(0);
436show_in_offset(1);
437limit_in_offset(1);
438show_in_offset(2);
439limit_in_offset(2);
440show_in_offset(3);
441limit_in_offset(3);
442show_in_offset(4);
443limit_in_offset(4);
444show_in_offset(5);
445limit_in_offset(5);
446show_in_offset(6);
447limit_in_offset(6);
448show_in_offset(7);
449limit_in_offset(7);
450show_in_offset(8);
451
452/* 3 temperatures */
20ad93d4
JD		 453static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
454 char *buf)
1da177e4 455{
20ad93d4
JD		 456 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
457 int nr = sensor_attr->index;
458
1da177e4
LT		 459 struct it87_data *data = it87_update_device(dev);
460 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
461}
20ad93d4
JD		 462static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
463 char *buf)
1da177e4 464{
20ad93d4
JD		 465 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
466 int nr = sensor_attr->index;
467
1da177e4
LT		 468 struct it87_data *data = it87_update_device(dev);
469 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
470}
20ad93d4
JD		 471static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
472 char *buf)
1da177e4 473{
20ad93d4
JD		 474 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
475 int nr = sensor_attr->index;
476
1da177e4
LT		 477 struct it87_data *data = it87_update_device(dev);
478 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
479}
20ad93d4
JD		 480static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
481 const char *buf, size_t count)
1da177e4 482{
20ad93d4
JD		 483 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
484 int nr = sensor_attr->index;
485
b74f3fdd 486 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 487 long val;
488
489 if (strict_strtol(buf, 10, &val) < 0)
490 return -EINVAL;
1da177e4 491
9a61bf63 492 mutex_lock(&data->update_lock);
1da177e4 493 data->temp_high[nr] = TEMP_TO_REG(val);
b74f3fdd 494 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
9a61bf63 495 mutex_unlock(&data->update_lock);
1da177e4
LT		 496 return count;
497}
20ad93d4
JD		 498static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
499 const char *buf, size_t count)
1da177e4 500{
20ad93d4
JD		 501 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
502 int nr = sensor_attr->index;
503
b74f3fdd 504 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 505 long val;
506
507 if (strict_strtol(buf, 10, &val) < 0)
508 return -EINVAL;
1da177e4 509
9a61bf63 510 mutex_lock(&data->update_lock);
1da177e4 511 data->temp_low[nr] = TEMP_TO_REG(val);
b74f3fdd 512 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
9a61bf63 513 mutex_unlock(&data->update_lock);
1da177e4
LT		 514 return count;
515}
516#define show_temp_offset(offset) \
20ad93d4
JD		 517static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
518 show_temp, NULL, offset - 1); \
519static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
520 show_temp_max, set_temp_max, offset - 1); \
521static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
522 show_temp_min, set_temp_min, offset - 1);
1da177e4
LT		 523
524show_temp_offset(1);
525show_temp_offset(2);
526show_temp_offset(3);
527
20ad93d4
JD		 528static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
529 char *buf)
1da177e4 530{
20ad93d4
JD		 531 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
532 int nr = sensor_attr->index;
533
1da177e4 534 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 535 u8 reg = data->sensor; /* In case the value is updated while
536 we use it */
537
1da177e4
LT		 538 if (reg & (1 << nr))
539 return sprintf(buf, "3\n"); /* thermal diode */
540 if (reg & (8 << nr))
4ed10779 541 return sprintf(buf, "4\n"); /* thermistor */
1da177e4
LT		 542 return sprintf(buf, "0\n"); /* disabled */
543}
20ad93d4
JD		 544static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
545 const char *buf, size_t count)
1da177e4 546{
20ad93d4
JD		 547 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
548 int nr = sensor_attr->index;
549
b74f3fdd 550 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 551 long val;
8acf07c5 552 u8 reg;
f5f64501
JD		 553
554 if (strict_strtol(buf, 10, &val) < 0)
555 return -EINVAL;
1da177e4 556
8acf07c5
JD		 557 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
558 reg &= ~(1 << nr);
559 reg &= ~(8 << nr);
4ed10779
JD		 560 if (val == 2) { /* backwards compatibility */
561 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
562 "instead\n");
563 val = 4;
564 }
565 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
1da177e4 566 if (val == 3)
8acf07c5 567 reg |= 1 << nr;
4ed10779 568 else if (val == 4)
8acf07c5
JD		 569 reg |= 8 << nr;
570 else if (val != 0)
1da177e4 571 return -EINVAL;
8acf07c5
JD		 572
573 mutex_lock(&data->update_lock);
574 data->sensor = reg;
b74f3fdd 575 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
2b3d1d87 576 data->valid = 0; /* Force cache refresh */
9a61bf63 577 mutex_unlock(&data->update_lock);
1da177e4
LT		 578 return count;
579}
580#define show_sensor_offset(offset) \
20ad93d4
JD		 581static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
582 show_sensor, set_sensor, offset - 1);
1da177e4
LT		 583
584show_sensor_offset(1);
585show_sensor_offset(2);
586show_sensor_offset(3);
587
588/* 3 Fans */
b99883dc
JD		 589
590static int pwm_mode(const struct it87_data *data, int nr)
591{
592 int ctrl = data->fan_main_ctrl & (1 << nr);
593
594 if (ctrl == 0) /* Full speed */
595 return 0;
596 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
597 return 2;
598 else /* Manual mode */
599 return 1;
600}
601
20ad93d4
JD		 602static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
603 char *buf)
1da177e4 604{
20ad93d4
JD		 605 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
606 int nr = sensor_attr->index;
607
1da177e4 608 struct it87_data *data = it87_update_device(dev);
5f2dc798 609 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
1da177e4
LT		 610 DIV_FROM_REG(data->fan_div[nr])));
611}
20ad93d4
JD		 612static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
613 char *buf)
1da177e4 614{
20ad93d4
JD		 615 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
616 int nr = sensor_attr->index;
617
1da177e4 618 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 619 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
620 DIV_FROM_REG(data->fan_div[nr])));
1da177e4 621}
20ad93d4
JD		 622static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
623 char *buf)
1da177e4 624{
20ad93d4
JD		 625 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
626 int nr = sensor_attr->index;
627
1da177e4
LT		 628 struct it87_data *data = it87_update_device(dev);
629 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
630}
5f2dc798
JD		 631static ssize_t show_pwm_enable(struct device *dev,
632 struct device_attribute *attr, char *buf)
1da177e4 633{
20ad93d4
JD		 634 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
635 int nr = sensor_attr->index;
636
1da177e4 637 struct it87_data *data = it87_update_device(dev);
b99883dc 638 return sprintf(buf, "%d\n", pwm_mode(data, nr));
1da177e4 639}
20ad93d4
JD		 640static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
641 char *buf)
1da177e4 642{
20ad93d4
JD		 643 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
644 int nr = sensor_attr->index;
645
1da177e4 646 struct it87_data *data = it87_update_device(dev);
b99883dc 647 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm_duty[nr]));
1da177e4 648}
f8d0c19a
JD		 649static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
650 char *buf)
651{
652 struct it87_data *data = it87_update_device(dev);
653 int index = (data->fan_ctl >> 4) & 0x07;
654
655 return sprintf(buf, "%u\n", pwm_freq[index]);
656}
20ad93d4
JD		 657static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
658 const char *buf, size_t count)
1da177e4 659{
20ad93d4
JD		 660 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
661 int nr = sensor_attr->index;
662
b74f3fdd 663 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 664 long val;
7f999aa7 665 u8 reg;
1da177e4 666
f5f64501
JD		 667 if (strict_strtol(buf, 10, &val) < 0)
668 return -EINVAL;
669
9a61bf63 670 mutex_lock(&data->update_lock);
b74f3fdd 671 reg = it87_read_value(data, IT87_REG_FAN_DIV);
07eab46d 672 switch (nr) {
5f2dc798
JD		 673 case 0:
674 data->fan_div[nr] = reg & 0x07;
675 break;
676 case 1:
677 data->fan_div[nr] = (reg >> 3) & 0x07;
678 break;
679 case 2:
680 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
681 break;
07eab46d
JD		 682 }
683
1da177e4 684 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 685 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
9a61bf63 686 mutex_unlock(&data->update_lock);
1da177e4
LT		 687 return count;
688}
20ad93d4
JD		 689static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
690 const char *buf, size_t count)
1da177e4 691{
20ad93d4
JD		 692 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
693 int nr = sensor_attr->index;
694
b74f3fdd 695 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 696 unsigned long val;
8ab4ec3e 697 int min;
1da177e4
LT		 698 u8 old;
699
f5f64501
JD		 700 if (strict_strtoul(buf, 10, &val) < 0)
701 return -EINVAL;
702
9a61bf63 703 mutex_lock(&data->update_lock);
b74f3fdd 704 old = it87_read_value(data, IT87_REG_FAN_DIV);
1da177e4 705
8ab4ec3e
JD		 706 /* Save fan min limit */
707 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
1da177e4
LT		 708
709 switch (nr) {
710 case 0:
711 case 1:
712 data->fan_div[nr] = DIV_TO_REG(val);
713 break;
714 case 2:
715 if (val < 8)
716 data->fan_div[nr] = 1;
717 else
718 data->fan_div[nr] = 3;
719 }
720 val = old & 0x80;
721 val |= (data->fan_div[0] & 0x07);
722 val |= (data->fan_div[1] & 0x07) << 3;
723 if (data->fan_div[2] == 3)
724 val |= 0x1 << 6;
b74f3fdd 725 it87_write_value(data, IT87_REG_FAN_DIV, val);
1da177e4 726
8ab4ec3e
JD		 727 /* Restore fan min limit */
728 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 729 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
8ab4ec3e 730
9a61bf63 731 mutex_unlock(&data->update_lock);
1da177e4
LT		 732 return count;
733}
cccfc9c4
JD		 734
735/* Returns 0 if OK, -EINVAL otherwise */
736static int check_trip_points(struct device *dev, int nr)
737{
738 const struct it87_data *data = dev_get_drvdata(dev);
739 int i, err = 0;
740
741 if (has_old_autopwm(data)) {
742 for (i = 0; i < 3; i++) {
743 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
744 err = -EINVAL;
745 }
746 for (i = 0; i < 2; i++) {
747 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
748 err = -EINVAL;
749 }
750 }
751
752 if (err) {
753 dev_err(dev, "Inconsistent trip points, not switching to "
754 "automatic mode\n");
755 dev_err(dev, "Adjust the trip points and try again\n");
756 }
757 return err;
758}
759
20ad93d4
JD		 760static ssize_t set_pwm_enable(struct device *dev,
761 struct device_attribute *attr, const char *buf, size_t count)
1da177e4 762{
20ad93d4
JD		 763 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
764 int nr = sensor_attr->index;
765
b74f3fdd 766 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 767 long val;
1da177e4 768
f5f64501 769 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 2)
b99883dc
JD		 770 return -EINVAL;
771
cccfc9c4
JD		 772 /* Check trip points before switching to automatic mode */
773 if (val == 2) {
774 if (check_trip_points(dev, nr) < 0)
775 return -EINVAL;
776 }
777
9a61bf63 778 mutex_lock(&data->update_lock);
1da177e4
LT		 779
780 if (val == 0) {
781 int tmp;
782 /* make sure the fan is on when in on/off mode */
b74f3fdd 783 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
784 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
1da177e4
LT		 785 /* set on/off mode */
786 data->fan_main_ctrl &= ~(1 << nr);
5f2dc798
JD		 787 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
788 data->fan_main_ctrl);
b99883dc
JD		 789 } else {
790 if (val == 1) /* Manual mode */
791 data->pwm_ctrl[nr] = data->pwm_duty[nr];
792 else /* Automatic mode */
793 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
794 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1da177e4
LT		 795 /* set SmartGuardian mode */
796 data->fan_main_ctrl |= (1 << nr);
5f2dc798
JD		 797 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
798 data->fan_main_ctrl);
1da177e4
LT		 799 }
800
9a61bf63 801 mutex_unlock(&data->update_lock);
1da177e4
LT		 802 return count;
803}
20ad93d4
JD		 804static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
805 const char *buf, size_t count)
1da177e4 806{
20ad93d4
JD		 807 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
808 int nr = sensor_attr->index;
809
b74f3fdd 810 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 811 long val;
1da177e4 812
f5f64501 813 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1da177e4
LT		 814 return -EINVAL;
815
9a61bf63 816 mutex_lock(&data->update_lock);
b99883dc
JD		 817 data->pwm_duty[nr] = PWM_TO_REG(val);
818 /* If we are in manual mode, write the duty cycle immediately;
819 * otherwise, just store it for later use. */
820 if (!(data->pwm_ctrl[nr] & 0x80)) {
821 data->pwm_ctrl[nr] = data->pwm_duty[nr];
822 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
823 }
9a61bf63 824 mutex_unlock(&data->update_lock);
1da177e4
LT		 825 return count;
826}
f8d0c19a
JD		 827static ssize_t set_pwm_freq(struct device *dev,
828 struct device_attribute *attr, const char *buf, size_t count)
829{
b74f3fdd 830 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 831 unsigned long val;
f8d0c19a
JD		 832 int i;
833
f5f64501
JD		 834 if (strict_strtoul(buf, 10, &val) < 0)
835 return -EINVAL;
836
f8d0c19a
JD		 837 /* Search for the nearest available frequency */
838 for (i = 0; i < 7; i++) {
839 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
840 break;
841 }
842
843 mutex_lock(&data->update_lock);
b74f3fdd 844 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
f8d0c19a 845 data->fan_ctl |= i << 4;
b74f3fdd 846 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
f8d0c19a
JD		 847 mutex_unlock(&data->update_lock);
848
849 return count;
850}
94ac7ee6
JD		 851static ssize_t show_pwm_temp_map(struct device *dev,
852 struct device_attribute *attr, char *buf)
853{
854 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
855 int nr = sensor_attr->index;
856
857 struct it87_data *data = it87_update_device(dev);
858 int map;
859
860 if (data->pwm_temp_map[nr] < 3)
861 map = 1 << data->pwm_temp_map[nr];
862 else
863 map = 0; /* Should never happen */
864 return sprintf(buf, "%d\n", map);
865}
866static ssize_t set_pwm_temp_map(struct device *dev,
867 struct device_attribute *attr, const char *buf, size_t count)
868{
869 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
870 int nr = sensor_attr->index;
871
872 struct it87_data *data = dev_get_drvdata(dev);
873 long val;
874 u8 reg;
875
4f3f51bc
JD		 876 /* This check can go away if we ever support automatic fan speed
877 control on newer chips. */
878 if (!has_old_autopwm(data)) {
879 dev_notice(dev, "Mapping change disabled for safety reasons\n");
880 return -EINVAL;
881 }
882
94ac7ee6
JD		 883 if (strict_strtol(buf, 10, &val) < 0)
884 return -EINVAL;
885
886 switch (val) {
887 case (1 << 0):
888 reg = 0x00;
889 break;
890 case (1 << 1):
891 reg = 0x01;
892 break;
893 case (1 << 2):
894 reg = 0x02;
895 break;
896 default:
897 return -EINVAL;
898 }
899
900 mutex_lock(&data->update_lock);
901 data->pwm_temp_map[nr] = reg;
902 /* If we are in automatic mode, write the temp mapping immediately;
903 * otherwise, just store it for later use. */
904 if (data->pwm_ctrl[nr] & 0x80) {
905 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
906 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
907 }
908 mutex_unlock(&data->update_lock);
909 return count;
910}
1da177e4 911
4f3f51bc
JD		 912static ssize_t show_auto_pwm(struct device *dev,
913 struct device_attribute *attr, char *buf)
914{
915 struct it87_data *data = it87_update_device(dev);
916 struct sensor_device_attribute_2 *sensor_attr =
917 to_sensor_dev_attr_2(attr);
918 int nr = sensor_attr->nr;
919 int point = sensor_attr->index;
920
921 return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point]));
922}
923
924static ssize_t set_auto_pwm(struct device *dev,
925 struct device_attribute *attr, const char *buf, size_t count)
926{
927 struct it87_data *data = dev_get_drvdata(dev);
928 struct sensor_device_attribute_2 *sensor_attr =
929 to_sensor_dev_attr_2(attr);
930 int nr = sensor_attr->nr;
931 int point = sensor_attr->index;
932 long val;
933
934 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
935 return -EINVAL;
936
937 mutex_lock(&data->update_lock);
938 data->auto_pwm[nr][point] = PWM_TO_REG(val);
939 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
940 data->auto_pwm[nr][point]);
941 mutex_unlock(&data->update_lock);
942 return count;
943}
944
945static ssize_t show_auto_temp(struct device *dev,
946 struct device_attribute *attr, char *buf)
947{
948 struct it87_data *data = it87_update_device(dev);
949 struct sensor_device_attribute_2 *sensor_attr =
950 to_sensor_dev_attr_2(attr);
951 int nr = sensor_attr->nr;
952 int point = sensor_attr->index;
953
954 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
955}
956
957static ssize_t set_auto_temp(struct device *dev,
958 struct device_attribute *attr, const char *buf, size_t count)
959{
960 struct it87_data *data = dev_get_drvdata(dev);
961 struct sensor_device_attribute_2 *sensor_attr =
962 to_sensor_dev_attr_2(attr);
963 int nr = sensor_attr->nr;
964 int point = sensor_attr->index;
965 long val;
966
967 if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
968 return -EINVAL;
969
970 mutex_lock(&data->update_lock);
971 data->auto_temp[nr][point] = TEMP_TO_REG(val);
972 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
973 data->auto_temp[nr][point]);
974 mutex_unlock(&data->update_lock);
975 return count;
976}
977
20ad93d4
JD		 978#define show_fan_offset(offset) \
979static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
980 show_fan, NULL, offset - 1); \
981static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
982 show_fan_min, set_fan_min, offset - 1); \
983static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
984 show_fan_div, set_fan_div, offset - 1);
1da177e4
LT		 985
986show_fan_offset(1);
987show_fan_offset(2);
988show_fan_offset(3);
989
990#define show_pwm_offset(offset) \
20ad93d4
JD		 991static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
992 show_pwm_enable, set_pwm_enable, offset - 1); \
993static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
f8d0c19a
JD		 994 show_pwm, set_pwm, offset - 1); \
995static DEVICE_ATTR(pwm##offset##_freq, \
996 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
94ac7ee6
JD		 997 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
998static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
4f3f51bc
JD		 999 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
1000 offset - 1); \
1001static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
1002 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1003 offset - 1, 0); \
1004static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
1005 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1006 offset - 1, 1); \
1007static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
1008 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1009 offset - 1, 2); \
1010static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
1011 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
1012static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
1013 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1014 offset - 1, 1); \
1015static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
1016 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1017 offset - 1, 0); \
1018static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
1019 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1020 offset - 1, 2); \
1021static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
1022 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1023 offset - 1, 3); \
1024static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
1025 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1026 offset - 1, 4);
1da177e4
LT		 1027
1028show_pwm_offset(1);
1029show_pwm_offset(2);
1030show_pwm_offset(3);
1031
17d648bf
JD		 1032/* A different set of callbacks for 16-bit fans */
1033static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
1034 char *buf)
1035{
1036 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1037 int nr = sensor_attr->index;
1038 struct it87_data *data = it87_update_device(dev);
1039 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
1040}
1041
1042static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
1043 char *buf)
1044{
1045 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1046 int nr = sensor_attr->index;
1047 struct it87_data *data = it87_update_device(dev);
1048 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
1049}
1050
1051static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
1052 const char *buf, size_t count)
1053{
1054 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1055 int nr = sensor_attr->index;
b74f3fdd 1056 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1057 long val;
1058
1059 if (strict_strtol(buf, 10, &val) < 0)
1060 return -EINVAL;
17d648bf
JD		 1061
1062 mutex_lock(&data->update_lock);
1063 data->fan_min[nr] = FAN16_TO_REG(val);
c7f1f716 1064 it87_write_value(data, IT87_REG_FAN_MIN[nr],
17d648bf 1065 data->fan_min[nr] & 0xff);
c7f1f716 1066 it87_write_value(data, IT87_REG_FANX_MIN[nr],
17d648bf
JD		 1067 data->fan_min[nr] >> 8);
1068 mutex_unlock(&data->update_lock);
1069 return count;
1070}
1071
1072/* We want to use the same sysfs file names as 8-bit fans, but we need
1073 different variable names, so we have to use SENSOR_ATTR instead of
1074 SENSOR_DEVICE_ATTR. */
1075#define show_fan16_offset(offset) \
1076static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
1077 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
1078 show_fan16, NULL, offset - 1); \
1079static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
1080 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1081 show_fan16_min, set_fan16_min, offset - 1)
1082
1083show_fan16_offset(1);
1084show_fan16_offset(2);
1085show_fan16_offset(3);
c7f1f716
JD		 1086show_fan16_offset(4);
1087show_fan16_offset(5);
17d648bf 1088
1da177e4 1089/* Alarms */
5f2dc798
JD		 1090static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1091 char *buf)
1da177e4
LT		 1092{
1093 struct it87_data *data = it87_update_device(dev);
68188ba7 1094 return sprintf(buf, "%u\n", data->alarms);
1da177e4 1095}
1d66c64c 1096static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1da177e4 1097
0124dd78
JD		 1098static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1099 char *buf)
1100{
1101 int bitnr = to_sensor_dev_attr(attr)->index;
1102 struct it87_data *data = it87_update_device(dev);
1103 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1104}
1105static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1106static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1107static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1108static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1109static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1110static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1111static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1112static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1113static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1114static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1115static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1116static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1117static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1118static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1119static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1120static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1121
d9b327c3
JD		 1122static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1123 char *buf)
1124{
1125 int bitnr = to_sensor_dev_attr(attr)->index;
1126 struct it87_data *data = it87_update_device(dev);
1127 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1128}
1129static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1130 const char *buf, size_t count)
1131{
1132 int bitnr = to_sensor_dev_attr(attr)->index;
1133 struct it87_data *data = dev_get_drvdata(dev);
1134 long val;
1135
1136 if (strict_strtol(buf, 10, &val) < 0
1137 || (val != 0 && val != 1))
1138 return -EINVAL;
1139
1140 mutex_lock(&data->update_lock);
1141 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1142 if (val)
1143 data->beeps |= (1 << bitnr);
1144 else
1145 data->beeps &= ~(1 << bitnr);
1146 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1147 mutex_unlock(&data->update_lock);
1148 return count;
1149}
1150
1151static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1152 show_beep, set_beep, 1);
1153static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1154static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1155static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1156static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1157static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1158static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1159static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1160/* fanX_beep writability is set later */
1161static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1162static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1163static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1164static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1165static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1166static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1167 show_beep, set_beep, 2);
1168static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1169static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1170
5f2dc798
JD		 1171static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1172 char *buf)
1da177e4 1173{
90d6619a 1174 struct it87_data *data = dev_get_drvdata(dev);
a7be58a1 1175 return sprintf(buf, "%u\n", data->vrm);
1da177e4 1176}
5f2dc798
JD		 1177static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1178 const char *buf, size_t count)
1da177e4 1179{
b74f3fdd 1180 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1181 unsigned long val;
1182
1183 if (strict_strtoul(buf, 10, &val) < 0)
1184 return -EINVAL;
1da177e4 1185
1da177e4
LT		 1186 data->vrm = val;
1187
1188 return count;
1189}
1190static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1da177e4 1191
5f2dc798
JD		 1192static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1193 char *buf)
1da177e4
LT		 1194{
1195 struct it87_data *data = it87_update_device(dev);
1196 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1197}
1198static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
87808be4 1199
738e5e05
JD		 1200static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1201 char *buf)
1202{
1203 static const char *labels[] = {
1204 "+5V",
1205 "5VSB",
1206 "Vbat",
1207 };
1208 int nr = to_sensor_dev_attr(attr)->index;
1209
1210 return sprintf(buf, "%s\n", labels[nr]);
1211}
1212static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1213static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1214static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1215
b74f3fdd 1216static ssize_t show_name(struct device *dev, struct device_attribute
1217 *devattr, char *buf)
1218{
1219 struct it87_data *data = dev_get_drvdata(dev);
1220 return sprintf(buf, "%s\n", data->name);
1221}
1222static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1223
87808be4
JD		 1224static struct attribute *it87_attributes[] = {
1225 &sensor_dev_attr_in0_input.dev_attr.attr,
1226 &sensor_dev_attr_in1_input.dev_attr.attr,
1227 &sensor_dev_attr_in2_input.dev_attr.attr,
1228 &sensor_dev_attr_in3_input.dev_attr.attr,
1229 &sensor_dev_attr_in4_input.dev_attr.attr,
1230 &sensor_dev_attr_in5_input.dev_attr.attr,
1231 &sensor_dev_attr_in6_input.dev_attr.attr,
1232 &sensor_dev_attr_in7_input.dev_attr.attr,
1233 &sensor_dev_attr_in8_input.dev_attr.attr,
1234 &sensor_dev_attr_in0_min.dev_attr.attr,
1235 &sensor_dev_attr_in1_min.dev_attr.attr,
1236 &sensor_dev_attr_in2_min.dev_attr.attr,
1237 &sensor_dev_attr_in3_min.dev_attr.attr,
1238 &sensor_dev_attr_in4_min.dev_attr.attr,
1239 &sensor_dev_attr_in5_min.dev_attr.attr,
1240 &sensor_dev_attr_in6_min.dev_attr.attr,
1241 &sensor_dev_attr_in7_min.dev_attr.attr,
1242 &sensor_dev_attr_in0_max.dev_attr.attr,
1243 &sensor_dev_attr_in1_max.dev_attr.attr,
1244 &sensor_dev_attr_in2_max.dev_attr.attr,
1245 &sensor_dev_attr_in3_max.dev_attr.attr,
1246 &sensor_dev_attr_in4_max.dev_attr.attr,
1247 &sensor_dev_attr_in5_max.dev_attr.attr,
1248 &sensor_dev_attr_in6_max.dev_attr.attr,
1249 &sensor_dev_attr_in7_max.dev_attr.attr,
0124dd78
JD		 1250 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1251 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1252 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1253 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1254 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1255 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1256 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1257 &sensor_dev_attr_in7_alarm.dev_attr.attr,
87808be4
JD		 1258
1259 &sensor_dev_attr_temp1_input.dev_attr.attr,
1260 &sensor_dev_attr_temp2_input.dev_attr.attr,
1261 &sensor_dev_attr_temp3_input.dev_attr.attr,
1262 &sensor_dev_attr_temp1_max.dev_attr.attr,
1263 &sensor_dev_attr_temp2_max.dev_attr.attr,
1264 &sensor_dev_attr_temp3_max.dev_attr.attr,
1265 &sensor_dev_attr_temp1_min.dev_attr.attr,
1266 &sensor_dev_attr_temp2_min.dev_attr.attr,
1267 &sensor_dev_attr_temp3_min.dev_attr.attr,
1268 &sensor_dev_attr_temp1_type.dev_attr.attr,
1269 &sensor_dev_attr_temp2_type.dev_attr.attr,
1270 &sensor_dev_attr_temp3_type.dev_attr.attr,
0124dd78
JD		 1271 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1272 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1273 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
87808be4
JD		 1274
1275 &dev_attr_alarms.attr,
b74f3fdd 1276 &dev_attr_name.attr,
87808be4
JD		 1277 NULL
1278};
1279
1280static const struct attribute_group it87_group = {
1281 .attrs = it87_attributes,
1282};
1283
d9b327c3
JD		 1284static struct attribute *it87_attributes_beep[] = {
1285 &sensor_dev_attr_in0_beep.dev_attr.attr,
1286 &sensor_dev_attr_in1_beep.dev_attr.attr,
1287 &sensor_dev_attr_in2_beep.dev_attr.attr,
1288 &sensor_dev_attr_in3_beep.dev_attr.attr,
1289 &sensor_dev_attr_in4_beep.dev_attr.attr,
1290 &sensor_dev_attr_in5_beep.dev_attr.attr,
1291 &sensor_dev_attr_in6_beep.dev_attr.attr,
1292 &sensor_dev_attr_in7_beep.dev_attr.attr,
1293
1294 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1295 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1296 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1297 NULL
1298};
1299
1300static const struct attribute_group it87_group_beep = {
1301 .attrs = it87_attributes_beep,
1302};
1303
723a0aa0 1304static struct attribute *it87_attributes_fan16[5][3+1] = { {
87808be4
JD		 1305 &sensor_dev_attr_fan1_input16.dev_attr.attr,
1306 &sensor_dev_attr_fan1_min16.dev_attr.attr,
723a0aa0
JD		 1307 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1308 NULL
1309}, {
87808be4
JD		 1310 &sensor_dev_attr_fan2_input16.dev_attr.attr,
1311 &sensor_dev_attr_fan2_min16.dev_attr.attr,
723a0aa0
JD		 1312 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1313 NULL
1314}, {
87808be4
JD		 1315 &sensor_dev_attr_fan3_input16.dev_attr.attr,
1316 &sensor_dev_attr_fan3_min16.dev_attr.attr,
723a0aa0
JD		 1317 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1318 NULL
1319}, {
c7f1f716
JD		 1320 &sensor_dev_attr_fan4_input16.dev_attr.attr,
1321 &sensor_dev_attr_fan4_min16.dev_attr.attr,
723a0aa0
JD		 1322 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1323 NULL
1324}, {
c7f1f716
JD		 1325 &sensor_dev_attr_fan5_input16.dev_attr.attr,
1326 &sensor_dev_attr_fan5_min16.dev_attr.attr,
723a0aa0
JD		 1327 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1328 NULL
1329} };
1330
1331static const struct attribute_group it87_group_fan16[5] = {
1332 { .attrs = it87_attributes_fan16[0] },
1333 { .attrs = it87_attributes_fan16[1] },
1334 { .attrs = it87_attributes_fan16[2] },
1335 { .attrs = it87_attributes_fan16[3] },
1336 { .attrs = it87_attributes_fan16[4] },
1337};
87808be4 1338
723a0aa0 1339static struct attribute *it87_attributes_fan[3][4+1] = { {
87808be4
JD		 1340 &sensor_dev_attr_fan1_input.dev_attr.attr,
1341 &sensor_dev_attr_fan1_min.dev_attr.attr,
1342 &sensor_dev_attr_fan1_div.dev_attr.attr,
723a0aa0
JD		 1343 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1344 NULL
1345}, {
87808be4
JD		 1346 &sensor_dev_attr_fan2_input.dev_attr.attr,
1347 &sensor_dev_attr_fan2_min.dev_attr.attr,
1348 &sensor_dev_attr_fan2_div.dev_attr.attr,
723a0aa0
JD		 1349 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1350 NULL
1351}, {
87808be4
JD		 1352 &sensor_dev_attr_fan3_input.dev_attr.attr,
1353 &sensor_dev_attr_fan3_min.dev_attr.attr,
1354 &sensor_dev_attr_fan3_div.dev_attr.attr,
0124dd78 1355 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
723a0aa0
JD		 1356 NULL
1357} };
1358
1359static const struct attribute_group it87_group_fan[3] = {
1360 { .attrs = it87_attributes_fan[0] },
1361 { .attrs = it87_attributes_fan[1] },
1362 { .attrs = it87_attributes_fan[2] },
1363};
1364
1365static const struct attribute_group *
1366it87_get_fan_group(const struct it87_data *data)
1367{
1368 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan;
1369}
0124dd78 1370
723a0aa0 1371static struct attribute *it87_attributes_pwm[3][4+1] = { {
87808be4 1372 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
87808be4 1373 &sensor_dev_attr_pwm1.dev_attr.attr,
d5b0b5d6 1374 &dev_attr_pwm1_freq.attr,
94ac7ee6 1375 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1376 NULL
1377}, {
1378 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1379 &sensor_dev_attr_pwm2.dev_attr.attr,
1380 &dev_attr_pwm2_freq.attr,
94ac7ee6 1381 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1382 NULL
1383}, {
1384 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1385 &sensor_dev_attr_pwm3.dev_attr.attr,
1386 &dev_attr_pwm3_freq.attr,
94ac7ee6 1387 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1388 NULL
1389} };
87808be4 1390
723a0aa0
JD		 1391static const struct attribute_group it87_group_pwm[3] = {
1392 { .attrs = it87_attributes_pwm[0] },
1393 { .attrs = it87_attributes_pwm[1] },
1394 { .attrs = it87_attributes_pwm[2] },
1395};
1396
4f3f51bc
JD		 1397static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1398 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1399 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1400 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1401 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1402 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1403 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1404 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1405 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1406 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1407 NULL
1408}, {
1409 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1410 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1411 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1412 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1413 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1414 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1415 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1416 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1417 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1418 NULL
1419}, {
1420 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1421 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1422 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1423 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1424 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1425 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1426 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1427 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1428 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1429 NULL
1430} };
1431
1432static const struct attribute_group it87_group_autopwm[3] = {
1433 { .attrs = it87_attributes_autopwm[0] },
1434 { .attrs = it87_attributes_autopwm[1] },
1435 { .attrs = it87_attributes_autopwm[2] },
1436};
1437
d9b327c3
JD		 1438static struct attribute *it87_attributes_fan_beep[] = {
1439 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1440 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1441 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1442 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1443 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1444};
1445
6a8d7acf 1446static struct attribute *it87_attributes_vid[] = {
87808be4
JD		 1447 &dev_attr_vrm.attr,
1448 &dev_attr_cpu0_vid.attr,
1449 NULL
1450};
1451
6a8d7acf
JD		 1452static const struct attribute_group it87_group_vid = {
1453 .attrs = it87_attributes_vid,
87808be4 1454};
1da177e4 1455
738e5e05
JD		 1456static struct attribute *it87_attributes_label[] = {
1457 &sensor_dev_attr_in3_label.dev_attr.attr,
1458 &sensor_dev_attr_in7_label.dev_attr.attr,
1459 &sensor_dev_attr_in8_label.dev_attr.attr,
1460 NULL
1461};
1462
1463static const struct attribute_group it87_group_label = {
1464 .attrs = it87_attributes_vid,
1465};
1466
2d8672c5 1467/* SuperIO detection - will change isa_address if a chip is found */
b74f3fdd 1468static int __init it87_find(unsigned short *address,
1469 struct it87_sio_data *sio_data)
1da177e4
LT		 1470{
1471 int err = -ENODEV;
b74f3fdd 1472 u16 chip_type;
98dd22c3 1473 const char *board_vendor, *board_name;
1da177e4
LT		 1474
1475 superio_enter();
67b671bc 1476 chip_type = force_id ? force_id : superio_inw(DEVID);
b74f3fdd 1477
1478 switch (chip_type) {
1479 case IT8705F_DEVID:
1480 sio_data->type = it87;
1481 break;
1482 case IT8712F_DEVID:
1483 sio_data->type = it8712;
1484 break;
1485 case IT8716F_DEVID:
1486 case IT8726F_DEVID:
1487 sio_data->type = it8716;
1488 break;
1489 case IT8718F_DEVID:
1490 sio_data->type = it8718;
1491 break;
b4da93e4
JMS		 1492 case IT8720F_DEVID:
1493 sio_data->type = it8720;
1494 break;
b74f3fdd 1495 case 0xffff: /* No device at all */
1496 goto exit;
1497 default:
1498 pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
1499 chip_type);
1500 goto exit;
1501 }
1da177e4 1502
87673dd7 1503 superio_select(PME);
1da177e4
LT		 1504 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1505 pr_info("it87: Device not activated, skipping\n");
1506 goto exit;
1507 }
1508
1509 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1510 if (*address == 0) {
1511 pr_info("it87: Base address not set, skipping\n");
1512 goto exit;
1513 }
1514
1515 err = 0;
0475169c 1516 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1da177e4 1517 pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
0475169c 1518 chip_type, *address, sio_data->revision);
1da177e4 1519
738e5e05
JD		 1520 /* in8 (Vbat) is always internal */
1521 sio_data->internal = (1 << 2);
1522
87673dd7 1523 /* Read GPIO config and VID value from LDN 7 (GPIO) */
895ff267
JD		 1524 if (sio_data->type == it87) {
1525 /* The IT8705F doesn't have VID pins at all */
1526 sio_data->skip_vid = 1;
d9b327c3
JD		 1527
1528 /* The IT8705F has a different LD number for GPIO */
1529 superio_select(5);
1530 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
895ff267 1531 } else {
87673dd7
JD		 1532 int reg;
1533
1534 superio_select(GPIO);
895ff267
JD		 1535 /* We need at least 4 VID pins */
1536 reg = superio_inb(IT87_SIO_GPIO3_REG);
1537 if (reg & 0x0f) {
1538 pr_info("it87: VID is disabled (pins used for GPIO)\n");
1539 sio_data->skip_vid = 1;
1540 }
1541
591ec650
JD		 1542 /* Check if fan3 is there or not */
1543 if (reg & (1 << 6))
1544 sio_data->skip_pwm |= (1 << 2);
1545 if (reg & (1 << 7))
1546 sio_data->skip_fan |= (1 << 2);
1547
1548 /* Check if fan2 is there or not */
1549 reg = superio_inb(IT87_SIO_GPIO5_REG);
1550 if (reg & (1 << 1))
1551 sio_data->skip_pwm |= (1 << 1);
1552 if (reg & (1 << 2))
1553 sio_data->skip_fan |= (1 << 1);
1554
895ff267
JD		 1555 if ((sio_data->type == it8718 || sio_data->type == it8720)
1556 && !(sio_data->skip_vid))
b74f3fdd 1557 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
87673dd7
JD		 1558
1559 reg = superio_inb(IT87_SIO_PINX2_REG);
436cad2a
JD		 1560 /*
1561 * The IT8720F has no VIN7 pin, so VCCH should always be
1562 * routed internally to VIN7 with an internal divider.
1563 * Curiously, there still is a configuration bit to control
1564 * this, which means it can be set incorrectly. And even
1565 * more curiously, many boards out there are improperly
1566 * configured, even though the IT8720F datasheet claims
1567 * that the internal routing of VCCH to VIN7 is the default
1568 * setting. So we force the internal routing in this case.
1569 */
1570 if (sio_data->type == it8720 && !(reg & (1 << 1))) {
1571 reg |= (1 << 1);
1572 superio_outb(IT87_SIO_PINX2_REG, reg);
1573 pr_notice("it87: Routing internal VCCH to in7\n");
1574 }
87673dd7 1575 if (reg & (1 << 0))
738e5e05 1576 sio_data->internal |= (1 << 0);
87673dd7 1577 if (reg & (1 << 1))
738e5e05 1578 sio_data->internal |= (1 << 1);
d9b327c3
JD		 1579
1580 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
87673dd7 1581 }
d9b327c3
JD		 1582 if (sio_data->beep_pin)
1583 pr_info("it87: Beeping is supported\n");
87673dd7 1584
98dd22c3
JD		 1585 /* Disable specific features based on DMI strings */
1586 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1587 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1588 if (board_vendor && board_name) {
1589 if (strcmp(board_vendor, "nVIDIA") == 0
1590 && strcmp(board_name, "FN68PT") == 0) {
1591 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1592 connected to a fan, but to something else. One user
1593 has reported instant system power-off when changing
1594 the PWM2 duty cycle, so we disable it.
1595 I use the board name string as the trigger in case
1596 the same board is ever used in other systems. */
1597 pr_info("it87: Disabling pwm2 due to "
1598 "hardware constraints\n");
1599 sio_data->skip_pwm = (1 << 1);
1600 }
1601 }
1602
1da177e4
LT		 1603exit:
1604 superio_exit();
1605 return err;
1606}
1607
723a0aa0
JD		 1608static void it87_remove_files(struct device *dev)
1609{
1610 struct it87_data *data = platform_get_drvdata(pdev);
1611 struct it87_sio_data *sio_data = dev->platform_data;
1612 const struct attribute_group *fan_group = it87_get_fan_group(data);
1613 int i;
1614
1615 sysfs_remove_group(&dev->kobj, &it87_group);
d9b327c3
JD		 1616 if (sio_data->beep_pin)
1617 sysfs_remove_group(&dev->kobj, &it87_group_beep);
723a0aa0
JD		 1618 for (i = 0; i < 5; i++) {
1619 if (!(data->has_fan & (1 << i)))
1620 continue;
1621 sysfs_remove_group(&dev->kobj, &fan_group[i]);
d9b327c3
JD		 1622 if (sio_data->beep_pin)
1623 sysfs_remove_file(&dev->kobj,
1624 it87_attributes_fan_beep[i]);
723a0aa0
JD		 1625 }
1626 for (i = 0; i < 3; i++) {
1627 if (sio_data->skip_pwm & (1 << 0))
1628 continue;
1629 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
4f3f51bc
JD		 1630 if (has_old_autopwm(data))
1631 sysfs_remove_group(&dev->kobj,
1632 &it87_group_autopwm[i]);
723a0aa0 1633 }
6a8d7acf
JD		 1634 if (!sio_data->skip_vid)
1635 sysfs_remove_group(&dev->kobj, &it87_group_vid);
738e5e05 1636 sysfs_remove_group(&dev->kobj, &it87_group_label);
723a0aa0
JD		 1637}
1638
b74f3fdd 1639static int __devinit it87_probe(struct platform_device *pdev)
1da177e4 1640{
1da177e4 1641 struct it87_data *data;
b74f3fdd 1642 struct resource *res;
1643 struct device *dev = &pdev->dev;
1644 struct it87_sio_data *sio_data = dev->platform_data;
723a0aa0
JD		 1645 const struct attribute_group *fan_group;
1646 int err = 0, i;
1da177e4 1647 int enable_pwm_interface;
d9b327c3 1648 int fan_beep_need_rw;
b74f3fdd 1649 static const char *names[] = {
1650 "it87",
1651 "it8712",
1652 "it8716",
1653 "it8718",
b4da93e4 1654 "it8720",
b74f3fdd 1655 };
1656
1657 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
87b4b663 1658 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
b74f3fdd 1659 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1660 (unsigned long)res->start,
87b4b663 1661 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
8e9afcbb
JD		 1662 err = -EBUSY;
1663 goto ERROR0;
1664 }
1da177e4 1665
5f2dc798
JD		 1666 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
1667 if (!data) {
1da177e4
LT		 1668 err = -ENOMEM;
1669 goto ERROR1;
1670 }
1da177e4 1671
b74f3fdd 1672 data->addr = res->start;
1673 data->type = sio_data->type;
0475169c 1674 data->revision = sio_data->revision;
b74f3fdd 1675 data->name = names[sio_data->type];
1da177e4
LT		 1676
1677 /* Now, we do the remaining detection. */
b74f3fdd 1678 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1679 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
8e9afcbb
JD		 1680 err = -ENODEV;
1681 goto ERROR2;
1da177e4
LT		 1682 }
1683
b74f3fdd 1684 platform_set_drvdata(pdev, data);
1da177e4 1685
9a61bf63 1686 mutex_init(&data->update_lock);
1da177e4 1687
1da177e4 1688 /* Check PWM configuration */
b74f3fdd 1689 enable_pwm_interface = it87_check_pwm(dev);
1da177e4
LT		 1690
1691 /* Initialize the IT87 chip */
b74f3fdd 1692 it87_init_device(pdev);
1da177e4
LT		 1693
1694 /* Register sysfs hooks */
5f2dc798
JD		 1695 err = sysfs_create_group(&dev->kobj, &it87_group);
1696 if (err)
b74f3fdd 1697 goto ERROR2;
17d648bf 1698
d9b327c3
JD		 1699 if (sio_data->beep_pin) {
1700 err = sysfs_create_group(&dev->kobj, &it87_group_beep);
1701 if (err)
1702 goto ERROR4;
1703 }
1704
9060f8bd 1705 /* Do not create fan files for disabled fans */
723a0aa0 1706 fan_group = it87_get_fan_group(data);
d9b327c3 1707 fan_beep_need_rw = 1;
723a0aa0
JD		 1708 for (i = 0; i < 5; i++) {
1709 if (!(data->has_fan & (1 << i)))
1710 continue;
1711 err = sysfs_create_group(&dev->kobj, &fan_group[i]);
1712 if (err)
1713 goto ERROR4;
d9b327c3
JD		 1714
1715 if (sio_data->beep_pin) {
1716 err = sysfs_create_file(&dev->kobj,
1717 it87_attributes_fan_beep[i]);
1718 if (err)
1719 goto ERROR4;
1720 if (!fan_beep_need_rw)
1721 continue;
1722
1723 /* As we have a single beep enable bit for all fans,
1724 * only the first enabled fan has a writable attribute
1725 * for it. */
1726 if (sysfs_chmod_file(&dev->kobj,
1727 it87_attributes_fan_beep[i],
1728 S_IRUGO | S_IWUSR))
1729 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
1730 i + 1);
1731 fan_beep_need_rw = 0;
1732 }
17d648bf
JD		 1733 }
1734
1da177e4 1735 if (enable_pwm_interface) {
723a0aa0
JD		 1736 for (i = 0; i < 3; i++) {
1737 if (sio_data->skip_pwm & (1 << i))
1738 continue;
1739 err = sysfs_create_group(&dev->kobj,
1740 &it87_group_pwm[i]);
1741 if (err)
98dd22c3 1742 goto ERROR4;
4f3f51bc
JD		 1743
1744 if (!has_old_autopwm(data))
1745 continue;
1746 err = sysfs_create_group(&dev->kobj,
1747 &it87_group_autopwm[i]);
1748 if (err)
1749 goto ERROR4;
98dd22c3 1750 }
1da177e4
LT		 1751 }
1752
895ff267 1753 if (!sio_data->skip_vid) {
303760b4 1754 data->vrm = vid_which_vrm();
87673dd7 1755 /* VID reading from Super-I/O config space if available */
b74f3fdd 1756 data->vid = sio_data->vid_value;
6a8d7acf
JD		 1757 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
1758 if (err)
87808be4
JD		 1759 goto ERROR4;
1760 }
1761
738e5e05
JD		 1762 /* Export labels for internal sensors */
1763 for (i = 0; i < 3; i++) {
1764 if (!(sio_data->internal & (1 << i)))
1765 continue;
1766 err = sysfs_create_file(&dev->kobj,
1767 it87_attributes_label[i]);
1768 if (err)
1769 goto ERROR4;
1770 }
1771
1beeffe4
TJ		 1772 data->hwmon_dev = hwmon_device_register(dev);
1773 if (IS_ERR(data->hwmon_dev)) {
1774 err = PTR_ERR(data->hwmon_dev);
87808be4 1775 goto ERROR4;
1da177e4
LT		 1776 }
1777
1778 return 0;
1779
87808be4 1780ERROR4:
723a0aa0 1781 it87_remove_files(dev);
1da177e4 1782ERROR2:
b74f3fdd 1783 platform_set_drvdata(pdev, NULL);
1da177e4
LT		 1784 kfree(data);
1785ERROR1:
87b4b663 1786 release_region(res->start, IT87_EC_EXTENT);
1da177e4
LT		 1787ERROR0:
1788 return err;
1789}
1790
b74f3fdd 1791static int __devexit it87_remove(struct platform_device *pdev)
1da177e4 1792{
b74f3fdd 1793 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 1794
1beeffe4 1795 hwmon_device_unregister(data->hwmon_dev);
723a0aa0 1796 it87_remove_files(&pdev->dev);
943b0830 1797
87b4b663 1798 release_region(data->addr, IT87_EC_EXTENT);
b74f3fdd 1799 platform_set_drvdata(pdev, NULL);
943b0830 1800 kfree(data);
1da177e4
LT		 1801
1802 return 0;
1803}
1804
7f999aa7 1805/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1806 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1807 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1808static int it87_read_value(struct it87_data *data, u8 reg)
1da177e4 1809{
b74f3fdd 1810 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1811 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1812}
1813
7f999aa7 1814/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1815 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1816 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1817static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
1da177e4 1818{
b74f3fdd 1819 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1820 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1821}
1822
1823/* Return 1 if and only if the PWM interface is safe to use */
b74f3fdd 1824static int __devinit it87_check_pwm(struct device *dev)
1da177e4 1825{
b74f3fdd 1826 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1827 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1828 * and polarity set to active low is sign that this is the case so we
1829 * disable pwm control to protect the user. */
b74f3fdd 1830 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1da177e4
LT		 1831 if ((tmp & 0x87) == 0) {
1832 if (fix_pwm_polarity) {
1833 /* The user asks us to attempt a chip reconfiguration.
1834 * This means switching to active high polarity and
1835 * inverting all fan speed values. */
1836 int i;
1837 u8 pwm[3];
1838
1839 for (i = 0; i < 3; i++)
b74f3fdd 1840 pwm[i] = it87_read_value(data,
1da177e4
LT		 1841 IT87_REG_PWM(i));
1842
1843 /* If any fan is in automatic pwm mode, the polarity
1844 * might be correct, as suspicious as it seems, so we
1845 * better don't change anything (but still disable the
1846 * PWM interface). */
1847 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
b74f3fdd 1848 dev_info(dev, "Reconfiguring PWM to "
1da177e4 1849 "active high polarity\n");
b74f3fdd 1850 it87_write_value(data, IT87_REG_FAN_CTL,
1da177e4
LT		 1851 tmp | 0x87);
1852 for (i = 0; i < 3; i++)
b74f3fdd 1853 it87_write_value(data,
1da177e4
LT		 1854 IT87_REG_PWM(i),
1855 0x7f & ~pwm[i]);
1856 return 1;
1857 }
1858
b74f3fdd 1859 dev_info(dev, "PWM configuration is "
1da177e4
LT		 1860 "too broken to be fixed\n");
1861 }
1862
b74f3fdd 1863 dev_info(dev, "Detected broken BIOS "
1da177e4
LT		 1864 "defaults, disabling PWM interface\n");
1865 return 0;
1866 } else if (fix_pwm_polarity) {
b74f3fdd 1867 dev_info(dev, "PWM configuration looks "
1da177e4
LT		 1868 "sane, won't touch\n");
1869 }
1870
1871 return 1;
1872}
1873
1874/* Called when we have found a new IT87. */
b74f3fdd 1875static void __devinit it87_init_device(struct platform_device *pdev)
1da177e4 1876{
591ec650 1877 struct it87_sio_data *sio_data = pdev->dev.platform_data;
b74f3fdd 1878 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 1879 int tmp, i;
591ec650 1880 u8 mask;
1da177e4 1881
b99883dc
JD		 1882 /* For each PWM channel:
1883 * - If it is in automatic mode, setting to manual mode should set
1884 * the fan to full speed by default.
1885 * - If it is in manual mode, we need a mapping to temperature
1886 * channels to use when later setting to automatic mode later.
1887 * Use a 1:1 mapping by default (we are clueless.)
1888 * In both cases, the value can (and should) be changed by the user
1889 * prior to switching to a different mode. */
1da177e4 1890 for (i = 0; i < 3; i++) {
b99883dc
JD		 1891 data->pwm_temp_map[i] = i;
1892 data->pwm_duty[i] = 0x7f; /* Full speed */
4f3f51bc 1893 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
1da177e4
LT		 1894 }
1895
c5df9b7a
JD		 1896 /* Some chips seem to have default value 0xff for all limit
1897 * registers. For low voltage limits it makes no sense and triggers
1898 * alarms, so change to 0 instead. For high temperature limits, it
1899 * means -1 degree C, which surprisingly doesn't trigger an alarm,
1900 * but is still confusing, so change to 127 degrees C. */
1901 for (i = 0; i < 8; i++) {
b74f3fdd 1902 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
c5df9b7a 1903 if (tmp == 0xff)
b74f3fdd 1904 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
c5df9b7a
JD		 1905 }
1906 for (i = 0; i < 3; i++) {
b74f3fdd 1907 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
c5df9b7a 1908 if (tmp == 0xff)
b74f3fdd 1909 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
c5df9b7a
JD		 1910 }
1911
a00afb97
JD		 1912 /* Temperature channels are not forcibly enabled, as they can be
1913 * set to two different sensor types and we can't guess which one
1914 * is correct for a given system. These channels can be enabled at
1915 * run-time through the temp{1-3}_type sysfs accessors if needed. */
1da177e4
LT		 1916
1917 /* Check if voltage monitors are reset manually or by some reason */
b74f3fdd 1918 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
1da177e4
LT		 1919 if ((tmp & 0xff) == 0) {
1920 /* Enable all voltage monitors */
b74f3fdd 1921 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
1da177e4
LT		 1922 }
1923
1924 /* Check if tachometers are reset manually or by some reason */
591ec650 1925 mask = 0x70 & ~(sio_data->skip_fan << 4);
b74f3fdd 1926 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
591ec650 1927 if ((data->fan_main_ctrl & mask) == 0) {
1da177e4 1928 /* Enable all fan tachometers */
591ec650 1929 data->fan_main_ctrl |= mask;
5f2dc798
JD		 1930 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1931 data->fan_main_ctrl);
1da177e4 1932 }
9060f8bd 1933 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
1da177e4 1934
17d648bf 1935 /* Set tachometers to 16-bit mode if needed */
0475169c 1936 if (has_16bit_fans(data)) {
b74f3fdd 1937 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
9060f8bd 1938 if (~tmp & 0x07 & data->has_fan) {
b74f3fdd 1939 dev_dbg(&pdev->dev,
17d648bf 1940 "Setting fan1-3 to 16-bit mode\n");
b74f3fdd 1941 it87_write_value(data, IT87_REG_FAN_16BIT,
17d648bf
JD		 1942 tmp | 0x07);
1943 }
816d8c6a
AP		 1944 /* IT8705F only supports three fans. */
1945 if (data->type != it87) {
1946 if (tmp & (1 << 4))
1947 data->has_fan |= (1 << 3); /* fan4 enabled */
1948 if (tmp & (1 << 5))
1949 data->has_fan |= (1 << 4); /* fan5 enabled */
1950 }
17d648bf
JD		 1951 }
1952
591ec650
JD		 1953 /* Fan input pins may be used for alternative functions */
1954 data->has_fan &= ~sio_data->skip_fan;
1955
1da177e4 1956 /* Start monitoring */
b74f3fdd 1957 it87_write_value(data, IT87_REG_CONFIG,
1958 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
1da177e4
LT		 1959 | (update_vbat ? 0x41 : 0x01));
1960}
1961
b99883dc
JD		 1962static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
1963{
1964 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
1965 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
1966 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
1967 else /* Manual mode */
1968 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
4f3f51bc
JD		 1969
1970 if (has_old_autopwm(data)) {
1971 int i;
1972
1973 for (i = 0; i < 5 ; i++)
1974 data->auto_temp[nr][i] = it87_read_value(data,
1975 IT87_REG_AUTO_TEMP(nr, i));
1976 for (i = 0; i < 3 ; i++)
1977 data->auto_pwm[nr][i] = it87_read_value(data,
1978 IT87_REG_AUTO_PWM(nr, i));
1979 }
b99883dc
JD		 1980}
1981
1da177e4
LT		 1982static struct it87_data *it87_update_device(struct device *dev)
1983{
b74f3fdd 1984 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1985 int i;
1986
9a61bf63 1987 mutex_lock(&data->update_lock);
1da177e4
LT		 1988
1989 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1990 || !data->valid) {
1da177e4
LT		 1991 if (update_vbat) {
1992 /* Cleared after each update, so reenable. Value
5f2dc798 1993 returned by this read will be previous value */
b74f3fdd 1994 it87_write_value(data, IT87_REG_CONFIG,
5f2dc798 1995 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
1da177e4
LT		 1996 }
1997 for (i = 0; i <= 7; i++) {
1998 data->in[i] =
5f2dc798 1999 it87_read_value(data, IT87_REG_VIN(i));
1da177e4 2000 data->in_min[i] =
5f2dc798 2001 it87_read_value(data, IT87_REG_VIN_MIN(i));
1da177e4 2002 data->in_max[i] =
5f2dc798 2003 it87_read_value(data, IT87_REG_VIN_MAX(i));
1da177e4 2004 }
3543a53f 2005 /* in8 (battery) has no limit registers */
5f2dc798 2006 data->in[8] = it87_read_value(data, IT87_REG_VIN(8));
1da177e4 2007
c7f1f716 2008 for (i = 0; i < 5; i++) {
9060f8bd
JD		 2009 /* Skip disabled fans */
2010 if (!(data->has_fan & (1 << i)))
2011 continue;
2012
1da177e4 2013 data->fan_min[i] =
5f2dc798 2014 it87_read_value(data, IT87_REG_FAN_MIN[i]);
b74f3fdd 2015 data->fan[i] = it87_read_value(data,
c7f1f716 2016 IT87_REG_FAN[i]);
17d648bf 2017 /* Add high byte if in 16-bit mode */
0475169c 2018 if (has_16bit_fans(data)) {
b74f3fdd 2019 data->fan[i] |= it87_read_value(data,
c7f1f716 2020 IT87_REG_FANX[i]) << 8;
b74f3fdd 2021 data->fan_min[i] |= it87_read_value(data,
c7f1f716 2022 IT87_REG_FANX_MIN[i]) << 8;
17d648bf 2023 }
1da177e4
LT		 2024 }
2025 for (i = 0; i < 3; i++) {
2026 data->temp[i] =
5f2dc798 2027 it87_read_value(data, IT87_REG_TEMP(i));
1da177e4 2028 data->temp_high[i] =
5f2dc798 2029 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
1da177e4 2030 data->temp_low[i] =
5f2dc798 2031 it87_read_value(data, IT87_REG_TEMP_LOW(i));
1da177e4
LT		 2032 }
2033
17d648bf 2034 /* Newer chips don't have clock dividers */
0475169c 2035 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
b74f3fdd 2036 i = it87_read_value(data, IT87_REG_FAN_DIV);
17d648bf
JD		 2037 data->fan_div[0] = i & 0x07;
2038 data->fan_div[1] = (i >> 3) & 0x07;
2039 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2040 }
1da177e4
LT		 2041
2042 data->alarms =
b74f3fdd 2043 it87_read_value(data, IT87_REG_ALARM1) |
2044 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2045 (it87_read_value(data, IT87_REG_ALARM3) << 16);
d9b327c3 2046 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
b99883dc 2047
b74f3fdd 2048 data->fan_main_ctrl = it87_read_value(data,
2049 IT87_REG_FAN_MAIN_CTRL);
2050 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
b99883dc
JD		 2051 for (i = 0; i < 3; i++)
2052 it87_update_pwm_ctrl(data, i);
b74f3fdd 2053
2054 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
0475169c 2055 /* The 8705 does not have VID capability.
b4da93e4
JMS		 2056 The 8718 and the 8720 don't use IT87_REG_VID for the
2057 same purpose. */
17d648bf 2058 if (data->type == it8712 || data->type == it8716) {
b74f3fdd 2059 data->vid = it87_read_value(data, IT87_REG_VID);
17d648bf
JD		 2060 /* The older IT8712F revisions had only 5 VID pins,
2061 but we assume it is always safe to read 6 bits. */
2062 data->vid &= 0x3f;
1da177e4
LT		 2063 }
2064 data->last_updated = jiffies;
2065 data->valid = 1;
2066 }
2067
9a61bf63 2068 mutex_unlock(&data->update_lock);
1da177e4
LT		 2069
2070 return data;
2071}
2072
b74f3fdd 2073static int __init it87_device_add(unsigned short address,
2074 const struct it87_sio_data *sio_data)
2075{
2076 struct resource res = {
87b4b663
BH		 2077 .start = address + IT87_EC_OFFSET,
2078 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
b74f3fdd 2079 .name = DRVNAME,
2080 .flags = IORESOURCE_IO,
2081 };
2082 int err;
2083
b9acb64a
JD		 2084 err = acpi_check_resource_conflict(&res);
2085 if (err)
2086 goto exit;
2087
b74f3fdd 2088 pdev = platform_device_alloc(DRVNAME, address);
2089 if (!pdev) {
2090 err = -ENOMEM;
2091 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
2092 goto exit;
2093 }
2094
2095 err = platform_device_add_resources(pdev, &res, 1);
2096 if (err) {
2097 printk(KERN_ERR DRVNAME ": Device resource addition failed "
2098 "(%d)\n", err);
2099 goto exit_device_put;
2100 }
2101
2102 err = platform_device_add_data(pdev, sio_data,
2103 sizeof(struct it87_sio_data));
2104 if (err) {
2105 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
2106 goto exit_device_put;
2107 }
2108
2109 err = platform_device_add(pdev);
2110 if (err) {
2111 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
2112 err);
2113 goto exit_device_put;
2114 }
2115
2116 return 0;
2117
2118exit_device_put:
2119 platform_device_put(pdev);
2120exit:
2121 return err;
2122}
2123
1da177e4
LT		 2124static int __init sm_it87_init(void)
2125{
b74f3fdd 2126 int err;
5f2dc798 2127 unsigned short isa_address = 0;
b74f3fdd 2128 struct it87_sio_data sio_data;
2129
98dd22c3 2130 memset(&sio_data, 0, sizeof(struct it87_sio_data));
b74f3fdd 2131 err = it87_find(&isa_address, &sio_data);
2132 if (err)
2133 return err;
2134 err = platform_driver_register(&it87_driver);
2135 if (err)
2136 return err;
fde09509 2137
b74f3fdd 2138 err = it87_device_add(isa_address, &sio_data);
5f2dc798 2139 if (err) {
b74f3fdd 2140 platform_driver_unregister(&it87_driver);
2141 return err;
2142 }
2143
2144 return 0;
1da177e4
LT		 2145}
2146
2147static void __exit sm_it87_exit(void)
2148{
b74f3fdd 2149 platform_device_unregister(pdev);
2150 platform_driver_unregister(&it87_driver);
1da177e4
LT		 2151}
2152
2153
f1d8e332 2154MODULE_AUTHOR("Chris Gauthron, "
b19367c6 2155 "Jean Delvare <khali@linux-fr.org>");
b4da93e4 2156MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
1da177e4
LT		 2157module_param(update_vbat, bool, 0);
2158MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2159module_param(fix_pwm_polarity, bool, 0);
5f2dc798
JD		 2160MODULE_PARM_DESC(fix_pwm_polarity,
2161 "Force PWM polarity to active high (DANGEROUS)");
1da177e4
LT		 2162MODULE_LICENSE("GPL");
2163
2164module_init(sm_it87_init);
2165module_exit(sm_it87_exit);
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