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hwmon: (it87) Don't arbitrarily enable temperature channels
[linux-2.6-block.git] / drivers / hwmon / it87.c
CommitLineData
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
83static int superio_inw(int reg)
84{
85 int val;
86 outb(reg++, REG);
87 val = inb(VAL) << 8;
88 outb(reg, REG);
89 val |= inb(VAL);
90 return val;
91}
92
93static inline void
87673dd7 94superio_select(int ldn)
1da177e4
LT		 95{
96 outb(DEV, REG);
87673dd7 97 outb(ldn, VAL);
1da177e4
LT		 98}
99
100static inline void
101superio_enter(void)
102{
103 outb(0x87, REG);
104 outb(0x01, REG);
105 outb(0x55, REG);
106 outb(0x55, REG);
107}
108
109static inline void
110superio_exit(void)
111{
112 outb(0x02, REG);
113 outb(0x02, VAL);
114}
115
87673dd7 116/* Logical device 4 registers */
1da177e4
LT		 117#define IT8712F_DEVID 0x8712
118#define IT8705F_DEVID 0x8705
17d648bf 119#define IT8716F_DEVID 0x8716
87673dd7 120#define IT8718F_DEVID 0x8718
b4da93e4 121#define IT8720F_DEVID 0x8720
08a8f6e9 122#define IT8726F_DEVID 0x8726
1da177e4
LT		 123#define IT87_ACT_REG 0x30
124#define IT87_BASE_REG 0x60
125
87673dd7 126/* Logical device 7 registers (IT8712F and later) */
895ff267 127#define IT87_SIO_GPIO3_REG 0x27
591ec650 128#define IT87_SIO_GPIO5_REG 0x29
87673dd7
JD		 129#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
130#define IT87_SIO_VID_REG 0xfc /* VID value */
d9b327c3 131#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
87673dd7 132
1da177e4
LT		 133/* Update battery voltage after every reading if true */
134static int update_vbat;
135
136/* Not all BIOSes properly configure the PWM registers */
137static int fix_pwm_polarity;
138
1da177e4
LT		 139/* Many IT87 constants specified below */
140
141/* Length of ISA address segment */
142#define IT87_EXTENT 8
143
87b4b663
BH		 144/* Length of ISA address segment for Environmental Controller */
145#define IT87_EC_EXTENT 2
146
147/* Offset of EC registers from ISA base address */
148#define IT87_EC_OFFSET 5
149
150/* Where are the ISA address/data registers relative to the EC base address */
151#define IT87_ADDR_REG_OFFSET 0
152#define IT87_DATA_REG_OFFSET 1
1da177e4
LT		 153
154/*----- The IT87 registers -----*/
155
156#define IT87_REG_CONFIG 0x00
157
158#define IT87_REG_ALARM1 0x01
159#define IT87_REG_ALARM2 0x02
160#define IT87_REG_ALARM3 0x03
161
b4da93e4
JMS		 162/* The IT8718F and IT8720F have the VID value in a different register, in
163 Super-I/O configuration space. */
1da177e4 164#define IT87_REG_VID 0x0a
0475169c
AP		 165/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
166 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
167 mode. */
1da177e4 168#define IT87_REG_FAN_DIV 0x0b
17d648bf 169#define IT87_REG_FAN_16BIT 0x0c
1da177e4
LT		 170
171/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
172
c7f1f716
JD		 173static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
174static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
175static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
176static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
1da177e4
LT		 177#define IT87_REG_FAN_MAIN_CTRL 0x13
178#define IT87_REG_FAN_CTL 0x14
179#define IT87_REG_PWM(nr) (0x15 + (nr))
180
181#define IT87_REG_VIN(nr) (0x20 + (nr))
182#define IT87_REG_TEMP(nr) (0x29 + (nr))
183
184#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
185#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
186#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
187#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
188
1da177e4
LT		 189#define IT87_REG_VIN_ENABLE 0x50
190#define IT87_REG_TEMP_ENABLE 0x51
d9b327c3 191#define IT87_REG_BEEP_ENABLE 0x5c
1da177e4
LT		 192
193#define IT87_REG_CHIPID 0x58
194
4f3f51bc
JD		 195#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
196#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
197
1da177e4
LT		 198#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
199#define IN_FROM_REG(val) ((val) * 16)
200
201static inline u8 FAN_TO_REG(long rpm, int div)
202{
203 if (rpm == 0)
204 return 255;
205 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
206 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
207 254);
208}
209
17d648bf
JD		 210static inline u16 FAN16_TO_REG(long rpm)
211{
212 if (rpm == 0)
213 return 0xffff;
214 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
215}
216
1da177e4 217#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
17d648bf
JD		 218/* The divider is fixed to 2 in 16-bit mode */
219#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2))
1da177e4
LT		 220
221#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
222 ((val)+500)/1000),-128,127))
e267d250 223#define TEMP_FROM_REG(val) ((val) * 1000)
1da177e4 224
1da177e4
LT		 225#define PWM_TO_REG(val) ((val) >> 1)
226#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
227
228static int DIV_TO_REG(int val)
229{
230 int answer = 0;
b9e349f7 231 while (answer < 7 && (val >>= 1))
1da177e4
LT		 232 answer++;
233 return answer;
234}
235#define DIV_FROM_REG(val) (1 << (val))
236
f8d0c19a
JD		 237static const unsigned int pwm_freq[8] = {
238 48000000 / 128,
239 24000000 / 128,
240 12000000 / 128,
241 8000000 / 128,
242 6000000 / 128,
243 3000000 / 128,
244 1500000 / 128,
245 750000 / 128,
246};
247
1da177e4 248
b74f3fdd 249struct it87_sio_data {
250 enum chips type;
251 /* Values read from Super-I/O config space */
0475169c 252 u8 revision;
b74f3fdd 253 u8 vid_value;
d9b327c3 254 u8 beep_pin;
591ec650 255 /* Features skipped based on config or DMI */
895ff267 256 u8 skip_vid;
591ec650 257 u8 skip_fan;
98dd22c3 258 u8 skip_pwm;
b74f3fdd 259};
260
ed6bafbf
JD		 261/* For each registered chip, we need to keep some data in memory.
262 The structure is dynamically allocated. */
1da177e4 263struct it87_data {
1beeffe4 264 struct device *hwmon_dev;
1da177e4 265 enum chips type;
0475169c 266 u8 revision;
1da177e4 267
b74f3fdd 268 unsigned short addr;
269 const char *name;
9a61bf63 270 struct mutex update_lock;
1da177e4
LT		 271 char valid; /* !=0 if following fields are valid */
272 unsigned long last_updated; /* In jiffies */
273
274 u8 in[9]; /* Register value */
3543a53f
JD		 275 u8 in_max[8]; /* Register value */
276 u8 in_min[8]; /* Register value */
9060f8bd 277 u8 has_fan; /* Bitfield, fans enabled */
c7f1f716
JD		 278 u16 fan[5]; /* Register values, possibly combined */
279 u16 fan_min[5]; /* Register values, possibly combined */
e267d250
JD		 280 s8 temp[3]; /* Register value */
281 s8 temp_high[3]; /* Register value */
282 s8 temp_low[3]; /* Register value */
1da177e4
LT		 283 u8 sensor; /* Register value */
284 u8 fan_div[3]; /* Register encoding, shifted right */
285 u8 vid; /* Register encoding, combined */
a7be58a1 286 u8 vrm;
1da177e4 287 u32 alarms; /* Register encoding, combined */
d9b327c3 288 u8 beeps; /* Register encoding */
1da177e4 289 u8 fan_main_ctrl; /* Register value */
f8d0c19a 290 u8 fan_ctl; /* Register value */
b99883dc
JD		 291
292 /* The following 3 arrays correspond to the same registers. The
293 * meaning of bits 6-0 depends on the value of bit 7, and we want
294 * to preserve settings on mode changes, so we have to track all
295 * values separately. */
296 u8 pwm_ctrl[3]; /* Register value */
297 u8 pwm_duty[3]; /* Manual PWM value set by user (bit 6-0) */
298 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
4f3f51bc
JD		 299
300 /* Automatic fan speed control registers */
301 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
302 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
1da177e4
LT		 303};
304
0475169c
AP		 305static inline int has_16bit_fans(const struct it87_data *data)
306{
816d8c6a 307 /* IT8705F Datasheet 0.4.1, 3h == Version G.
859b9ef3 308 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
816d8c6a
AP		 309 These are the first revisions with 16bit tachometer support. */
310 return (data->type == it87 && data->revision >= 0x03)
859b9ef3 311 || (data->type == it8712 && data->revision >= 0x08)
0475169c 312 || data->type == it8716
b4da93e4
JMS		 313 || data->type == it8718
314 || data->type == it8720;
0475169c 315}
1da177e4 316
4f3f51bc
JD		 317static inline int has_old_autopwm(const struct it87_data *data)
318{
319 /* The old automatic fan speed control interface is implemented
320 by IT8705F chips up to revision F and IT8712F chips up to
321 revision G. */
322 return (data->type == it87 && data->revision < 0x03)
323 || (data->type == it8712 && data->revision < 0x08);
324}
325
b74f3fdd 326static int it87_probe(struct platform_device *pdev);
d0546128 327static int __devexit it87_remove(struct platform_device *pdev);
1da177e4 328
b74f3fdd 329static int it87_read_value(struct it87_data *data, u8 reg);
330static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
1da177e4 331static struct it87_data *it87_update_device(struct device *dev);
b74f3fdd 332static int it87_check_pwm(struct device *dev);
333static void it87_init_device(struct platform_device *pdev);
1da177e4
LT		 334
335
b74f3fdd 336static struct platform_driver it87_driver = {
cdaf7934 337 .driver = {
87218842 338 .owner = THIS_MODULE,
b74f3fdd 339 .name = DRVNAME,
cdaf7934 340 },
b74f3fdd 341 .probe = it87_probe,
342 .remove = __devexit_p(it87_remove),
fde09509
JD		 343};
344
20ad93d4
JD		 345static ssize_t show_in(struct device *dev, struct device_attribute *attr,
346 char *buf)
1da177e4 347{
20ad93d4
JD		 348 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
349 int nr = sensor_attr->index;
350
1da177e4
LT		 351 struct it87_data *data = it87_update_device(dev);
352 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
353}
354
20ad93d4
JD		 355static ssize_t show_in_min(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_min[nr]));
363}
364
20ad93d4
JD		 365static ssize_t show_in_max(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_max[nr]));
373}
374
20ad93d4
JD		 375static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
376 const char *buf, size_t count)
1da177e4 377{
20ad93d4
JD		 378 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
379 int nr = sensor_attr->index;
380
b74f3fdd 381 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 382 unsigned long val;
383
384 if (strict_strtoul(buf, 10, &val) < 0)
385 return -EINVAL;
1da177e4 386
9a61bf63 387 mutex_lock(&data->update_lock);
1da177e4 388 data->in_min[nr] = IN_TO_REG(val);
b74f3fdd 389 it87_write_value(data, IT87_REG_VIN_MIN(nr),
1da177e4 390 data->in_min[nr]);
9a61bf63 391 mutex_unlock(&data->update_lock);
1da177e4
LT		 392 return count;
393}
20ad93d4
JD		 394static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
395 const char *buf, size_t count)
1da177e4 396{
20ad93d4
JD		 397 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
398 int nr = sensor_attr->index;
399
b74f3fdd 400 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 401 unsigned long val;
402
403 if (strict_strtoul(buf, 10, &val) < 0)
404 return -EINVAL;
1da177e4 405
9a61bf63 406 mutex_lock(&data->update_lock);
1da177e4 407 data->in_max[nr] = IN_TO_REG(val);
b74f3fdd 408 it87_write_value(data, IT87_REG_VIN_MAX(nr),
1da177e4 409 data->in_max[nr]);
9a61bf63 410 mutex_unlock(&data->update_lock);
1da177e4
LT		 411 return count;
412}
413
414#define show_in_offset(offset) \
20ad93d4
JD		 415static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
416 show_in, NULL, offset);
1da177e4
LT		 417
418#define limit_in_offset(offset) \
20ad93d4
JD		 419static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
420 show_in_min, set_in_min, offset); \
421static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
422 show_in_max, set_in_max, offset);
1da177e4
LT		 423
424show_in_offset(0);
425limit_in_offset(0);
426show_in_offset(1);
427limit_in_offset(1);
428show_in_offset(2);
429limit_in_offset(2);
430show_in_offset(3);
431limit_in_offset(3);
432show_in_offset(4);
433limit_in_offset(4);
434show_in_offset(5);
435limit_in_offset(5);
436show_in_offset(6);
437limit_in_offset(6);
438show_in_offset(7);
439limit_in_offset(7);
440show_in_offset(8);
441
442/* 3 temperatures */
20ad93d4
JD		 443static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
444 char *buf)
1da177e4 445{
20ad93d4
JD		 446 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
447 int nr = sensor_attr->index;
448
1da177e4
LT		 449 struct it87_data *data = it87_update_device(dev);
450 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
451}
20ad93d4
JD		 452static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
453 char *buf)
1da177e4 454{
20ad93d4
JD		 455 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
456 int nr = sensor_attr->index;
457
1da177e4
LT		 458 struct it87_data *data = it87_update_device(dev);
459 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
460}
20ad93d4
JD		 461static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
462 char *buf)
1da177e4 463{
20ad93d4
JD		 464 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
465 int nr = sensor_attr->index;
466
1da177e4
LT		 467 struct it87_data *data = it87_update_device(dev);
468 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
469}
20ad93d4
JD		 470static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
471 const char *buf, size_t count)
1da177e4 472{
20ad93d4
JD		 473 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
474 int nr = sensor_attr->index;
475
b74f3fdd 476 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 477 long val;
478
479 if (strict_strtol(buf, 10, &val) < 0)
480 return -EINVAL;
1da177e4 481
9a61bf63 482 mutex_lock(&data->update_lock);
1da177e4 483 data->temp_high[nr] = TEMP_TO_REG(val);
b74f3fdd 484 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
9a61bf63 485 mutex_unlock(&data->update_lock);
1da177e4
LT		 486 return count;
487}
20ad93d4
JD		 488static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
489 const char *buf, size_t count)
1da177e4 490{
20ad93d4
JD		 491 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
492 int nr = sensor_attr->index;
493
b74f3fdd 494 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 495 long val;
496
497 if (strict_strtol(buf, 10, &val) < 0)
498 return -EINVAL;
1da177e4 499
9a61bf63 500 mutex_lock(&data->update_lock);
1da177e4 501 data->temp_low[nr] = TEMP_TO_REG(val);
b74f3fdd 502 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
9a61bf63 503 mutex_unlock(&data->update_lock);
1da177e4
LT		 504 return count;
505}
506#define show_temp_offset(offset) \
20ad93d4
JD		 507static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
508 show_temp, NULL, offset - 1); \
509static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
510 show_temp_max, set_temp_max, offset - 1); \
511static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
512 show_temp_min, set_temp_min, offset - 1);
1da177e4
LT		 513
514show_temp_offset(1);
515show_temp_offset(2);
516show_temp_offset(3);
517
20ad93d4
JD		 518static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
519 char *buf)
1da177e4 520{
20ad93d4
JD		 521 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
522 int nr = sensor_attr->index;
523
1da177e4 524 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 525 u8 reg = data->sensor; /* In case the value is updated while
526 we use it */
527
1da177e4
LT		 528 if (reg & (1 << nr))
529 return sprintf(buf, "3\n"); /* thermal diode */
530 if (reg & (8 << nr))
4ed10779 531 return sprintf(buf, "4\n"); /* thermistor */
1da177e4
LT		 532 return sprintf(buf, "0\n"); /* disabled */
533}
20ad93d4
JD		 534static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
535 const char *buf, size_t count)
1da177e4 536{
20ad93d4
JD		 537 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
538 int nr = sensor_attr->index;
539
b74f3fdd 540 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 541 long val;
542
543 if (strict_strtol(buf, 10, &val) < 0)
544 return -EINVAL;
1da177e4 545
9a61bf63 546 mutex_lock(&data->update_lock);
1da177e4 547
a00afb97 548 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1da177e4
LT		 549 data->sensor &= ~(1 << nr);
550 data->sensor &= ~(8 << nr);
4ed10779
JD		 551 if (val == 2) { /* backwards compatibility */
552 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
553 "instead\n");
554 val = 4;
555 }
556 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
1da177e4 557 if (val == 3)
5f2dc798 558 data->sensor |= 1 << nr;
4ed10779 559 else if (val == 4)
5f2dc798 560 data->sensor |= 8 << nr;
1da177e4 561 else if (val != 0) {
9a61bf63 562 mutex_unlock(&data->update_lock);
1da177e4
LT		 563 return -EINVAL;
564 }
b74f3fdd 565 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
9a61bf63 566 mutex_unlock(&data->update_lock);
1da177e4
LT		 567 return count;
568}
569#define show_sensor_offset(offset) \
20ad93d4
JD		 570static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
571 show_sensor, set_sensor, offset - 1);
1da177e4
LT		 572
573show_sensor_offset(1);
574show_sensor_offset(2);
575show_sensor_offset(3);
576
577/* 3 Fans */
b99883dc
JD		 578
579static int pwm_mode(const struct it87_data *data, int nr)
580{
581 int ctrl = data->fan_main_ctrl & (1 << nr);
582
583 if (ctrl == 0) /* Full speed */
584 return 0;
585 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
586 return 2;
587 else /* Manual mode */
588 return 1;
589}
590
20ad93d4
JD		 591static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
592 char *buf)
1da177e4 593{
20ad93d4
JD		 594 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
595 int nr = sensor_attr->index;
596
1da177e4 597 struct it87_data *data = it87_update_device(dev);
5f2dc798 598 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
1da177e4
LT		 599 DIV_FROM_REG(data->fan_div[nr])));
600}
20ad93d4
JD		 601static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
602 char *buf)
1da177e4 603{
20ad93d4
JD		 604 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
605 int nr = sensor_attr->index;
606
1da177e4 607 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 608 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
609 DIV_FROM_REG(data->fan_div[nr])));
1da177e4 610}
20ad93d4
JD		 611static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
612 char *buf)
1da177e4 613{
20ad93d4
JD		 614 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
615 int nr = sensor_attr->index;
616
1da177e4
LT		 617 struct it87_data *data = it87_update_device(dev);
618 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
619}
5f2dc798
JD		 620static ssize_t show_pwm_enable(struct device *dev,
621 struct device_attribute *attr, char *buf)
1da177e4 622{
20ad93d4
JD		 623 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
624 int nr = sensor_attr->index;
625
1da177e4 626 struct it87_data *data = it87_update_device(dev);
b99883dc 627 return sprintf(buf, "%d\n", pwm_mode(data, nr));
1da177e4 628}
20ad93d4
JD		 629static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
630 char *buf)
1da177e4 631{
20ad93d4
JD		 632 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
633 int nr = sensor_attr->index;
634
1da177e4 635 struct it87_data *data = it87_update_device(dev);
b99883dc 636 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm_duty[nr]));
1da177e4 637}
f8d0c19a
JD		 638static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
639 char *buf)
640{
641 struct it87_data *data = it87_update_device(dev);
642 int index = (data->fan_ctl >> 4) & 0x07;
643
644 return sprintf(buf, "%u\n", pwm_freq[index]);
645}
20ad93d4
JD		 646static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
647 const char *buf, size_t count)
1da177e4 648{
20ad93d4
JD		 649 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
650 int nr = sensor_attr->index;
651
b74f3fdd 652 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 653 long val;
7f999aa7 654 u8 reg;
1da177e4 655
f5f64501
JD		 656 if (strict_strtol(buf, 10, &val) < 0)
657 return -EINVAL;
658
9a61bf63 659 mutex_lock(&data->update_lock);
b74f3fdd 660 reg = it87_read_value(data, IT87_REG_FAN_DIV);
07eab46d 661 switch (nr) {
5f2dc798
JD		 662 case 0:
663 data->fan_div[nr] = reg & 0x07;
664 break;
665 case 1:
666 data->fan_div[nr] = (reg >> 3) & 0x07;
667 break;
668 case 2:
669 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
670 break;
07eab46d
JD		 671 }
672
1da177e4 673 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 674 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
9a61bf63 675 mutex_unlock(&data->update_lock);
1da177e4
LT		 676 return count;
677}
20ad93d4
JD		 678static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
679 const char *buf, size_t count)
1da177e4 680{
20ad93d4
JD		 681 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
682 int nr = sensor_attr->index;
683
b74f3fdd 684 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 685 unsigned long val;
8ab4ec3e 686 int min;
1da177e4
LT		 687 u8 old;
688
f5f64501
JD		 689 if (strict_strtoul(buf, 10, &val) < 0)
690 return -EINVAL;
691
9a61bf63 692 mutex_lock(&data->update_lock);
b74f3fdd 693 old = it87_read_value(data, IT87_REG_FAN_DIV);
1da177e4 694
8ab4ec3e
JD		 695 /* Save fan min limit */
696 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
1da177e4
LT		 697
698 switch (nr) {
699 case 0:
700 case 1:
701 data->fan_div[nr] = DIV_TO_REG(val);
702 break;
703 case 2:
704 if (val < 8)
705 data->fan_div[nr] = 1;
706 else
707 data->fan_div[nr] = 3;
708 }
709 val = old & 0x80;
710 val |= (data->fan_div[0] & 0x07);
711 val |= (data->fan_div[1] & 0x07) << 3;
712 if (data->fan_div[2] == 3)
713 val |= 0x1 << 6;
b74f3fdd 714 it87_write_value(data, IT87_REG_FAN_DIV, val);
1da177e4 715
8ab4ec3e
JD		 716 /* Restore fan min limit */
717 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 718 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
8ab4ec3e 719
9a61bf63 720 mutex_unlock(&data->update_lock);
1da177e4
LT		 721 return count;
722}
cccfc9c4
JD		 723
724/* Returns 0 if OK, -EINVAL otherwise */
725static int check_trip_points(struct device *dev, int nr)
726{
727 const struct it87_data *data = dev_get_drvdata(dev);
728 int i, err = 0;
729
730 if (has_old_autopwm(data)) {
731 for (i = 0; i < 3; i++) {
732 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
733 err = -EINVAL;
734 }
735 for (i = 0; i < 2; i++) {
736 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
737 err = -EINVAL;
738 }
739 }
740
741 if (err) {
742 dev_err(dev, "Inconsistent trip points, not switching to "
743 "automatic mode\n");
744 dev_err(dev, "Adjust the trip points and try again\n");
745 }
746 return err;
747}
748
20ad93d4
JD		 749static ssize_t set_pwm_enable(struct device *dev,
750 struct device_attribute *attr, const char *buf, size_t count)
1da177e4 751{
20ad93d4
JD		 752 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
753 int nr = sensor_attr->index;
754
b74f3fdd 755 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 756 long val;
1da177e4 757
f5f64501 758 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 2)
b99883dc
JD		 759 return -EINVAL;
760
cccfc9c4
JD		 761 /* Check trip points before switching to automatic mode */
762 if (val == 2) {
763 if (check_trip_points(dev, nr) < 0)
764 return -EINVAL;
765 }
766
9a61bf63 767 mutex_lock(&data->update_lock);
1da177e4
LT		 768
769 if (val == 0) {
770 int tmp;
771 /* make sure the fan is on when in on/off mode */
b74f3fdd 772 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
773 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
1da177e4
LT		 774 /* set on/off mode */
775 data->fan_main_ctrl &= ~(1 << nr);
5f2dc798
JD		 776 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
777 data->fan_main_ctrl);
b99883dc
JD		 778 } else {
779 if (val == 1) /* Manual mode */
780 data->pwm_ctrl[nr] = data->pwm_duty[nr];
781 else /* Automatic mode */
782 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
783 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1da177e4
LT		 784 /* set SmartGuardian mode */
785 data->fan_main_ctrl |= (1 << nr);
5f2dc798
JD		 786 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
787 data->fan_main_ctrl);
1da177e4
LT		 788 }
789
9a61bf63 790 mutex_unlock(&data->update_lock);
1da177e4
LT		 791 return count;
792}
20ad93d4
JD		 793static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
794 const char *buf, size_t count)
1da177e4 795{
20ad93d4
JD		 796 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
797 int nr = sensor_attr->index;
798
b74f3fdd 799 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 800 long val;
1da177e4 801
f5f64501 802 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1da177e4
LT		 803 return -EINVAL;
804
9a61bf63 805 mutex_lock(&data->update_lock);
b99883dc
JD		 806 data->pwm_duty[nr] = PWM_TO_REG(val);
807 /* If we are in manual mode, write the duty cycle immediately;
808 * otherwise, just store it for later use. */
809 if (!(data->pwm_ctrl[nr] & 0x80)) {
810 data->pwm_ctrl[nr] = data->pwm_duty[nr];
811 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
812 }
9a61bf63 813 mutex_unlock(&data->update_lock);
1da177e4
LT		 814 return count;
815}
f8d0c19a
JD		 816static ssize_t set_pwm_freq(struct device *dev,
817 struct device_attribute *attr, const char *buf, size_t count)
818{
b74f3fdd 819 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 820 unsigned long val;
f8d0c19a
JD		 821 int i;
822
f5f64501
JD		 823 if (strict_strtoul(buf, 10, &val) < 0)
824 return -EINVAL;
825
f8d0c19a
JD		 826 /* Search for the nearest available frequency */
827 for (i = 0; i < 7; i++) {
828 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
829 break;
830 }
831
832 mutex_lock(&data->update_lock);
b74f3fdd 833 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
f8d0c19a 834 data->fan_ctl |= i << 4;
b74f3fdd 835 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
f8d0c19a
JD		 836 mutex_unlock(&data->update_lock);
837
838 return count;
839}
94ac7ee6
JD		 840static ssize_t show_pwm_temp_map(struct device *dev,
841 struct device_attribute *attr, char *buf)
842{
843 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
844 int nr = sensor_attr->index;
845
846 struct it87_data *data = it87_update_device(dev);
847 int map;
848
849 if (data->pwm_temp_map[nr] < 3)
850 map = 1 << data->pwm_temp_map[nr];
851 else
852 map = 0; /* Should never happen */
853 return sprintf(buf, "%d\n", map);
854}
855static ssize_t set_pwm_temp_map(struct device *dev,
856 struct device_attribute *attr, const char *buf, size_t count)
857{
858 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
859 int nr = sensor_attr->index;
860
861 struct it87_data *data = dev_get_drvdata(dev);
862 long val;
863 u8 reg;
864
4f3f51bc
JD		 865 /* This check can go away if we ever support automatic fan speed
866 control on newer chips. */
867 if (!has_old_autopwm(data)) {
868 dev_notice(dev, "Mapping change disabled for safety reasons\n");
869 return -EINVAL;
870 }
871
94ac7ee6
JD		 872 if (strict_strtol(buf, 10, &val) < 0)
873 return -EINVAL;
874
875 switch (val) {
876 case (1 << 0):
877 reg = 0x00;
878 break;
879 case (1 << 1):
880 reg = 0x01;
881 break;
882 case (1 << 2):
883 reg = 0x02;
884 break;
885 default:
886 return -EINVAL;
887 }
888
889 mutex_lock(&data->update_lock);
890 data->pwm_temp_map[nr] = reg;
891 /* If we are in automatic mode, write the temp mapping immediately;
892 * otherwise, just store it for later use. */
893 if (data->pwm_ctrl[nr] & 0x80) {
894 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
895 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
896 }
897 mutex_unlock(&data->update_lock);
898 return count;
899}
1da177e4 900
4f3f51bc
JD		 901static ssize_t show_auto_pwm(struct device *dev,
902 struct device_attribute *attr, char *buf)
903{
904 struct it87_data *data = it87_update_device(dev);
905 struct sensor_device_attribute_2 *sensor_attr =
906 to_sensor_dev_attr_2(attr);
907 int nr = sensor_attr->nr;
908 int point = sensor_attr->index;
909
910 return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point]));
911}
912
913static ssize_t set_auto_pwm(struct device *dev,
914 struct device_attribute *attr, const char *buf, size_t count)
915{
916 struct it87_data *data = dev_get_drvdata(dev);
917 struct sensor_device_attribute_2 *sensor_attr =
918 to_sensor_dev_attr_2(attr);
919 int nr = sensor_attr->nr;
920 int point = sensor_attr->index;
921 long val;
922
923 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
924 return -EINVAL;
925
926 mutex_lock(&data->update_lock);
927 data->auto_pwm[nr][point] = PWM_TO_REG(val);
928 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
929 data->auto_pwm[nr][point]);
930 mutex_unlock(&data->update_lock);
931 return count;
932}
933
934static ssize_t show_auto_temp(struct device *dev,
935 struct device_attribute *attr, char *buf)
936{
937 struct it87_data *data = it87_update_device(dev);
938 struct sensor_device_attribute_2 *sensor_attr =
939 to_sensor_dev_attr_2(attr);
940 int nr = sensor_attr->nr;
941 int point = sensor_attr->index;
942
943 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
944}
945
946static ssize_t set_auto_temp(struct device *dev,
947 struct device_attribute *attr, const char *buf, size_t count)
948{
949 struct it87_data *data = dev_get_drvdata(dev);
950 struct sensor_device_attribute_2 *sensor_attr =
951 to_sensor_dev_attr_2(attr);
952 int nr = sensor_attr->nr;
953 int point = sensor_attr->index;
954 long val;
955
956 if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
957 return -EINVAL;
958
959 mutex_lock(&data->update_lock);
960 data->auto_temp[nr][point] = TEMP_TO_REG(val);
961 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
962 data->auto_temp[nr][point]);
963 mutex_unlock(&data->update_lock);
964 return count;
965}
966
20ad93d4
JD		 967#define show_fan_offset(offset) \
968static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
969 show_fan, NULL, offset - 1); \
970static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
971 show_fan_min, set_fan_min, offset - 1); \
972static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
973 show_fan_div, set_fan_div, offset - 1);
1da177e4
LT		 974
975show_fan_offset(1);
976show_fan_offset(2);
977show_fan_offset(3);
978
979#define show_pwm_offset(offset) \
20ad93d4
JD		 980static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
981 show_pwm_enable, set_pwm_enable, offset - 1); \
982static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
f8d0c19a
JD		 983 show_pwm, set_pwm, offset - 1); \
984static DEVICE_ATTR(pwm##offset##_freq, \
985 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
94ac7ee6
JD		 986 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
987static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
4f3f51bc
JD		 988 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
989 offset - 1); \
990static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
991 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
992 offset - 1, 0); \
993static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
994 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
995 offset - 1, 1); \
996static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
997 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
998 offset - 1, 2); \
999static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
1000 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
1001static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
1002 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1003 offset - 1, 1); \
1004static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
1005 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1006 offset - 1, 0); \
1007static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
1008 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1009 offset - 1, 2); \
1010static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
1011 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1012 offset - 1, 3); \
1013static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
1014 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1015 offset - 1, 4);
1da177e4
LT		 1016
1017show_pwm_offset(1);
1018show_pwm_offset(2);
1019show_pwm_offset(3);
1020
17d648bf
JD		 1021/* A different set of callbacks for 16-bit fans */
1022static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
1023 char *buf)
1024{
1025 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1026 int nr = sensor_attr->index;
1027 struct it87_data *data = it87_update_device(dev);
1028 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
1029}
1030
1031static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
1032 char *buf)
1033{
1034 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1035 int nr = sensor_attr->index;
1036 struct it87_data *data = it87_update_device(dev);
1037 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
1038}
1039
1040static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
1041 const char *buf, size_t count)
1042{
1043 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1044 int nr = sensor_attr->index;
b74f3fdd 1045 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1046 long val;
1047
1048 if (strict_strtol(buf, 10, &val) < 0)
1049 return -EINVAL;
17d648bf
JD		 1050
1051 mutex_lock(&data->update_lock);
1052 data->fan_min[nr] = FAN16_TO_REG(val);
c7f1f716 1053 it87_write_value(data, IT87_REG_FAN_MIN[nr],
17d648bf 1054 data->fan_min[nr] & 0xff);
c7f1f716 1055 it87_write_value(data, IT87_REG_FANX_MIN[nr],
17d648bf
JD		 1056 data->fan_min[nr] >> 8);
1057 mutex_unlock(&data->update_lock);
1058 return count;
1059}
1060
1061/* We want to use the same sysfs file names as 8-bit fans, but we need
1062 different variable names, so we have to use SENSOR_ATTR instead of
1063 SENSOR_DEVICE_ATTR. */
1064#define show_fan16_offset(offset) \
1065static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
1066 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
1067 show_fan16, NULL, offset - 1); \
1068static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
1069 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1070 show_fan16_min, set_fan16_min, offset - 1)
1071
1072show_fan16_offset(1);
1073show_fan16_offset(2);
1074show_fan16_offset(3);
c7f1f716
JD		 1075show_fan16_offset(4);
1076show_fan16_offset(5);
17d648bf 1077
1da177e4 1078/* Alarms */
5f2dc798
JD		 1079static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1080 char *buf)
1da177e4
LT		 1081{
1082 struct it87_data *data = it87_update_device(dev);
68188ba7 1083 return sprintf(buf, "%u\n", data->alarms);
1da177e4 1084}
1d66c64c 1085static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1da177e4 1086
0124dd78
JD		 1087static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1088 char *buf)
1089{
1090 int bitnr = to_sensor_dev_attr(attr)->index;
1091 struct it87_data *data = it87_update_device(dev);
1092 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1093}
1094static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1095static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1096static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1097static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1098static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1099static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1100static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1101static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1102static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1103static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1104static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1105static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1106static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1107static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1108static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1109static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1110
d9b327c3
JD		 1111static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1112 char *buf)
1113{
1114 int bitnr = to_sensor_dev_attr(attr)->index;
1115 struct it87_data *data = it87_update_device(dev);
1116 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1117}
1118static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1119 const char *buf, size_t count)
1120{
1121 int bitnr = to_sensor_dev_attr(attr)->index;
1122 struct it87_data *data = dev_get_drvdata(dev);
1123 long val;
1124
1125 if (strict_strtol(buf, 10, &val) < 0
1126 || (val != 0 && val != 1))
1127 return -EINVAL;
1128
1129 mutex_lock(&data->update_lock);
1130 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1131 if (val)
1132 data->beeps |= (1 << bitnr);
1133 else
1134 data->beeps &= ~(1 << bitnr);
1135 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1136 mutex_unlock(&data->update_lock);
1137 return count;
1138}
1139
1140static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1141 show_beep, set_beep, 1);
1142static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1143static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1144static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1145static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1146static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1147static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1148static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1149/* fanX_beep writability is set later */
1150static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1151static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1152static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1153static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1154static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1155static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1156 show_beep, set_beep, 2);
1157static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1158static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1159
5f2dc798
JD		 1160static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1161 char *buf)
1da177e4 1162{
90d6619a 1163 struct it87_data *data = dev_get_drvdata(dev);
a7be58a1 1164 return sprintf(buf, "%u\n", data->vrm);
1da177e4 1165}
5f2dc798
JD		 1166static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1167 const char *buf, size_t count)
1da177e4 1168{
b74f3fdd 1169 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1170 unsigned long val;
1171
1172 if (strict_strtoul(buf, 10, &val) < 0)
1173 return -EINVAL;
1da177e4 1174
1da177e4
LT		 1175 data->vrm = val;
1176
1177 return count;
1178}
1179static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1da177e4 1180
5f2dc798
JD		 1181static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1182 char *buf)
1da177e4
LT		 1183{
1184 struct it87_data *data = it87_update_device(dev);
1185 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1186}
1187static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
87808be4 1188
b74f3fdd 1189static ssize_t show_name(struct device *dev, struct device_attribute
1190 *devattr, char *buf)
1191{
1192 struct it87_data *data = dev_get_drvdata(dev);
1193 return sprintf(buf, "%s\n", data->name);
1194}
1195static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1196
87808be4
JD		 1197static struct attribute *it87_attributes[] = {
1198 &sensor_dev_attr_in0_input.dev_attr.attr,
1199 &sensor_dev_attr_in1_input.dev_attr.attr,
1200 &sensor_dev_attr_in2_input.dev_attr.attr,
1201 &sensor_dev_attr_in3_input.dev_attr.attr,
1202 &sensor_dev_attr_in4_input.dev_attr.attr,
1203 &sensor_dev_attr_in5_input.dev_attr.attr,
1204 &sensor_dev_attr_in6_input.dev_attr.attr,
1205 &sensor_dev_attr_in7_input.dev_attr.attr,
1206 &sensor_dev_attr_in8_input.dev_attr.attr,
1207 &sensor_dev_attr_in0_min.dev_attr.attr,
1208 &sensor_dev_attr_in1_min.dev_attr.attr,
1209 &sensor_dev_attr_in2_min.dev_attr.attr,
1210 &sensor_dev_attr_in3_min.dev_attr.attr,
1211 &sensor_dev_attr_in4_min.dev_attr.attr,
1212 &sensor_dev_attr_in5_min.dev_attr.attr,
1213 &sensor_dev_attr_in6_min.dev_attr.attr,
1214 &sensor_dev_attr_in7_min.dev_attr.attr,
1215 &sensor_dev_attr_in0_max.dev_attr.attr,
1216 &sensor_dev_attr_in1_max.dev_attr.attr,
1217 &sensor_dev_attr_in2_max.dev_attr.attr,
1218 &sensor_dev_attr_in3_max.dev_attr.attr,
1219 &sensor_dev_attr_in4_max.dev_attr.attr,
1220 &sensor_dev_attr_in5_max.dev_attr.attr,
1221 &sensor_dev_attr_in6_max.dev_attr.attr,
1222 &sensor_dev_attr_in7_max.dev_attr.attr,
0124dd78
JD		 1223 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1224 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1225 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1226 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1227 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1228 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1229 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1230 &sensor_dev_attr_in7_alarm.dev_attr.attr,
87808be4
JD		 1231
1232 &sensor_dev_attr_temp1_input.dev_attr.attr,
1233 &sensor_dev_attr_temp2_input.dev_attr.attr,
1234 &sensor_dev_attr_temp3_input.dev_attr.attr,
1235 &sensor_dev_attr_temp1_max.dev_attr.attr,
1236 &sensor_dev_attr_temp2_max.dev_attr.attr,
1237 &sensor_dev_attr_temp3_max.dev_attr.attr,
1238 &sensor_dev_attr_temp1_min.dev_attr.attr,
1239 &sensor_dev_attr_temp2_min.dev_attr.attr,
1240 &sensor_dev_attr_temp3_min.dev_attr.attr,
1241 &sensor_dev_attr_temp1_type.dev_attr.attr,
1242 &sensor_dev_attr_temp2_type.dev_attr.attr,
1243 &sensor_dev_attr_temp3_type.dev_attr.attr,
0124dd78
JD		 1244 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1245 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1246 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
87808be4
JD		 1247
1248 &dev_attr_alarms.attr,
b74f3fdd 1249 &dev_attr_name.attr,
87808be4
JD		 1250 NULL
1251};
1252
1253static const struct attribute_group it87_group = {
1254 .attrs = it87_attributes,
1255};
1256
d9b327c3
JD		 1257static struct attribute *it87_attributes_beep[] = {
1258 &sensor_dev_attr_in0_beep.dev_attr.attr,
1259 &sensor_dev_attr_in1_beep.dev_attr.attr,
1260 &sensor_dev_attr_in2_beep.dev_attr.attr,
1261 &sensor_dev_attr_in3_beep.dev_attr.attr,
1262 &sensor_dev_attr_in4_beep.dev_attr.attr,
1263 &sensor_dev_attr_in5_beep.dev_attr.attr,
1264 &sensor_dev_attr_in6_beep.dev_attr.attr,
1265 &sensor_dev_attr_in7_beep.dev_attr.attr,
1266
1267 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1268 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1269 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1270 NULL
1271};
1272
1273static const struct attribute_group it87_group_beep = {
1274 .attrs = it87_attributes_beep,
1275};
1276
723a0aa0 1277static struct attribute *it87_attributes_fan16[5][3+1] = { {
87808be4
JD		 1278 &sensor_dev_attr_fan1_input16.dev_attr.attr,
1279 &sensor_dev_attr_fan1_min16.dev_attr.attr,
723a0aa0
JD		 1280 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1281 NULL
1282}, {
87808be4
JD		 1283 &sensor_dev_attr_fan2_input16.dev_attr.attr,
1284 &sensor_dev_attr_fan2_min16.dev_attr.attr,
723a0aa0
JD		 1285 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1286 NULL
1287}, {
87808be4
JD		 1288 &sensor_dev_attr_fan3_input16.dev_attr.attr,
1289 &sensor_dev_attr_fan3_min16.dev_attr.attr,
723a0aa0
JD		 1290 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1291 NULL
1292}, {
c7f1f716
JD		 1293 &sensor_dev_attr_fan4_input16.dev_attr.attr,
1294 &sensor_dev_attr_fan4_min16.dev_attr.attr,
723a0aa0
JD		 1295 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1296 NULL
1297}, {
c7f1f716
JD		 1298 &sensor_dev_attr_fan5_input16.dev_attr.attr,
1299 &sensor_dev_attr_fan5_min16.dev_attr.attr,
723a0aa0
JD		 1300 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1301 NULL
1302} };
1303
1304static const struct attribute_group it87_group_fan16[5] = {
1305 { .attrs = it87_attributes_fan16[0] },
1306 { .attrs = it87_attributes_fan16[1] },
1307 { .attrs = it87_attributes_fan16[2] },
1308 { .attrs = it87_attributes_fan16[3] },
1309 { .attrs = it87_attributes_fan16[4] },
1310};
87808be4 1311
723a0aa0 1312static struct attribute *it87_attributes_fan[3][4+1] = { {
87808be4
JD		 1313 &sensor_dev_attr_fan1_input.dev_attr.attr,
1314 &sensor_dev_attr_fan1_min.dev_attr.attr,
1315 &sensor_dev_attr_fan1_div.dev_attr.attr,
723a0aa0
JD		 1316 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1317 NULL
1318}, {
87808be4
JD		 1319 &sensor_dev_attr_fan2_input.dev_attr.attr,
1320 &sensor_dev_attr_fan2_min.dev_attr.attr,
1321 &sensor_dev_attr_fan2_div.dev_attr.attr,
723a0aa0
JD		 1322 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1323 NULL
1324}, {
87808be4
JD		 1325 &sensor_dev_attr_fan3_input.dev_attr.attr,
1326 &sensor_dev_attr_fan3_min.dev_attr.attr,
1327 &sensor_dev_attr_fan3_div.dev_attr.attr,
0124dd78 1328 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
723a0aa0
JD		 1329 NULL
1330} };
1331
1332static const struct attribute_group it87_group_fan[3] = {
1333 { .attrs = it87_attributes_fan[0] },
1334 { .attrs = it87_attributes_fan[1] },
1335 { .attrs = it87_attributes_fan[2] },
1336};
1337
1338static const struct attribute_group *
1339it87_get_fan_group(const struct it87_data *data)
1340{
1341 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan;
1342}
0124dd78 1343
723a0aa0 1344static struct attribute *it87_attributes_pwm[3][4+1] = { {
87808be4 1345 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
87808be4 1346 &sensor_dev_attr_pwm1.dev_attr.attr,
d5b0b5d6 1347 &dev_attr_pwm1_freq.attr,
94ac7ee6 1348 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1349 NULL
1350}, {
1351 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1352 &sensor_dev_attr_pwm2.dev_attr.attr,
1353 &dev_attr_pwm2_freq.attr,
94ac7ee6 1354 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1355 NULL
1356}, {
1357 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1358 &sensor_dev_attr_pwm3.dev_attr.attr,
1359 &dev_attr_pwm3_freq.attr,
94ac7ee6 1360 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1361 NULL
1362} };
87808be4 1363
723a0aa0
JD		 1364static const struct attribute_group it87_group_pwm[3] = {
1365 { .attrs = it87_attributes_pwm[0] },
1366 { .attrs = it87_attributes_pwm[1] },
1367 { .attrs = it87_attributes_pwm[2] },
1368};
1369
4f3f51bc
JD		 1370static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1371 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1372 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1373 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1374 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1375 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1376 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1377 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1378 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1379 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1380 NULL
1381}, {
1382 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1383 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1384 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1385 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1386 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1387 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1388 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1389 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1390 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1391 NULL
1392}, {
1393 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1394 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1395 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1396 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1397 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1398 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1399 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1400 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1401 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1402 NULL
1403} };
1404
1405static const struct attribute_group it87_group_autopwm[3] = {
1406 { .attrs = it87_attributes_autopwm[0] },
1407 { .attrs = it87_attributes_autopwm[1] },
1408 { .attrs = it87_attributes_autopwm[2] },
1409};
1410
d9b327c3
JD		 1411static struct attribute *it87_attributes_fan_beep[] = {
1412 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1413 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1414 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1415 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1416 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1417};
1418
6a8d7acf 1419static struct attribute *it87_attributes_vid[] = {
87808be4
JD		 1420 &dev_attr_vrm.attr,
1421 &dev_attr_cpu0_vid.attr,
1422 NULL
1423};
1424
6a8d7acf
JD		 1425static const struct attribute_group it87_group_vid = {
1426 .attrs = it87_attributes_vid,
87808be4 1427};
1da177e4 1428
2d8672c5 1429/* SuperIO detection - will change isa_address if a chip is found */
b74f3fdd 1430static int __init it87_find(unsigned short *address,
1431 struct it87_sio_data *sio_data)
1da177e4
LT		 1432{
1433 int err = -ENODEV;
b74f3fdd 1434 u16 chip_type;
98dd22c3 1435 const char *board_vendor, *board_name;
1da177e4
LT		 1436
1437 superio_enter();
67b671bc 1438 chip_type = force_id ? force_id : superio_inw(DEVID);
b74f3fdd 1439
1440 switch (chip_type) {
1441 case IT8705F_DEVID:
1442 sio_data->type = it87;
1443 break;
1444 case IT8712F_DEVID:
1445 sio_data->type = it8712;
1446 break;
1447 case IT8716F_DEVID:
1448 case IT8726F_DEVID:
1449 sio_data->type = it8716;
1450 break;
1451 case IT8718F_DEVID:
1452 sio_data->type = it8718;
1453 break;
b4da93e4
JMS		 1454 case IT8720F_DEVID:
1455 sio_data->type = it8720;
1456 break;
b74f3fdd 1457 case 0xffff: /* No device at all */
1458 goto exit;
1459 default:
1460 pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
1461 chip_type);
1462 goto exit;
1463 }
1da177e4 1464
87673dd7 1465 superio_select(PME);
1da177e4
LT		 1466 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1467 pr_info("it87: Device not activated, skipping\n");
1468 goto exit;
1469 }
1470
1471 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1472 if (*address == 0) {
1473 pr_info("it87: Base address not set, skipping\n");
1474 goto exit;
1475 }
1476
1477 err = 0;
0475169c 1478 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1da177e4 1479 pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
0475169c 1480 chip_type, *address, sio_data->revision);
1da177e4 1481
87673dd7 1482 /* Read GPIO config and VID value from LDN 7 (GPIO) */
895ff267
JD		 1483 if (sio_data->type == it87) {
1484 /* The IT8705F doesn't have VID pins at all */
1485 sio_data->skip_vid = 1;
d9b327c3
JD		 1486
1487 /* The IT8705F has a different LD number for GPIO */
1488 superio_select(5);
1489 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
895ff267 1490 } else {
87673dd7
JD		 1491 int reg;
1492
1493 superio_select(GPIO);
895ff267
JD		 1494 /* We need at least 4 VID pins */
1495 reg = superio_inb(IT87_SIO_GPIO3_REG);
1496 if (reg & 0x0f) {
1497 pr_info("it87: VID is disabled (pins used for GPIO)\n");
1498 sio_data->skip_vid = 1;
1499 }
1500
591ec650
JD		 1501 /* Check if fan3 is there or not */
1502 if (reg & (1 << 6))
1503 sio_data->skip_pwm |= (1 << 2);
1504 if (reg & (1 << 7))
1505 sio_data->skip_fan |= (1 << 2);
1506
1507 /* Check if fan2 is there or not */
1508 reg = superio_inb(IT87_SIO_GPIO5_REG);
1509 if (reg & (1 << 1))
1510 sio_data->skip_pwm |= (1 << 1);
1511 if (reg & (1 << 2))
1512 sio_data->skip_fan |= (1 << 1);
1513
895ff267
JD		 1514 if ((sio_data->type == it8718 || sio_data->type == it8720)
1515 && !(sio_data->skip_vid))
b74f3fdd 1516 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
87673dd7
JD		 1517
1518 reg = superio_inb(IT87_SIO_PINX2_REG);
1519 if (reg & (1 << 0))
1520 pr_info("it87: in3 is VCC (+5V)\n");
1521 if (reg & (1 << 1))
1522 pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
d9b327c3
JD		 1523
1524 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
87673dd7 1525 }
d9b327c3
JD		 1526 if (sio_data->beep_pin)
1527 pr_info("it87: Beeping is supported\n");
87673dd7 1528
98dd22c3
JD		 1529 /* Disable specific features based on DMI strings */
1530 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1531 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1532 if (board_vendor && board_name) {
1533 if (strcmp(board_vendor, "nVIDIA") == 0
1534 && strcmp(board_name, "FN68PT") == 0) {
1535 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1536 connected to a fan, but to something else. One user
1537 has reported instant system power-off when changing
1538 the PWM2 duty cycle, so we disable it.
1539 I use the board name string as the trigger in case
1540 the same board is ever used in other systems. */
1541 pr_info("it87: Disabling pwm2 due to "
1542 "hardware constraints\n");
1543 sio_data->skip_pwm = (1 << 1);
1544 }
1545 }
1546
1da177e4
LT		 1547exit:
1548 superio_exit();
1549 return err;
1550}
1551
723a0aa0
JD		 1552static void it87_remove_files(struct device *dev)
1553{
1554 struct it87_data *data = platform_get_drvdata(pdev);
1555 struct it87_sio_data *sio_data = dev->platform_data;
1556 const struct attribute_group *fan_group = it87_get_fan_group(data);
1557 int i;
1558
1559 sysfs_remove_group(&dev->kobj, &it87_group);
d9b327c3
JD		 1560 if (sio_data->beep_pin)
1561 sysfs_remove_group(&dev->kobj, &it87_group_beep);
723a0aa0
JD		 1562 for (i = 0; i < 5; i++) {
1563 if (!(data->has_fan & (1 << i)))
1564 continue;
1565 sysfs_remove_group(&dev->kobj, &fan_group[i]);
d9b327c3
JD		 1566 if (sio_data->beep_pin)
1567 sysfs_remove_file(&dev->kobj,
1568 it87_attributes_fan_beep[i]);
723a0aa0
JD		 1569 }
1570 for (i = 0; i < 3; i++) {
1571 if (sio_data->skip_pwm & (1 << 0))
1572 continue;
1573 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
4f3f51bc
JD		 1574 if (has_old_autopwm(data))
1575 sysfs_remove_group(&dev->kobj,
1576 &it87_group_autopwm[i]);
723a0aa0 1577 }
6a8d7acf
JD		 1578 if (!sio_data->skip_vid)
1579 sysfs_remove_group(&dev->kobj, &it87_group_vid);
723a0aa0
JD		 1580}
1581
b74f3fdd 1582static int __devinit it87_probe(struct platform_device *pdev)
1da177e4 1583{
1da177e4 1584 struct it87_data *data;
b74f3fdd 1585 struct resource *res;
1586 struct device *dev = &pdev->dev;
1587 struct it87_sio_data *sio_data = dev->platform_data;
723a0aa0
JD		 1588 const struct attribute_group *fan_group;
1589 int err = 0, i;
1da177e4 1590 int enable_pwm_interface;
d9b327c3 1591 int fan_beep_need_rw;
b74f3fdd 1592 static const char *names[] = {
1593 "it87",
1594 "it8712",
1595 "it8716",
1596 "it8718",
b4da93e4 1597 "it8720",
b74f3fdd 1598 };
1599
1600 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
87b4b663 1601 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
b74f3fdd 1602 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1603 (unsigned long)res->start,
87b4b663 1604 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
8e9afcbb
JD		 1605 err = -EBUSY;
1606 goto ERROR0;
1607 }
1da177e4 1608
5f2dc798
JD		 1609 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
1610 if (!data) {
1da177e4
LT		 1611 err = -ENOMEM;
1612 goto ERROR1;
1613 }
1da177e4 1614
b74f3fdd 1615 data->addr = res->start;
1616 data->type = sio_data->type;
0475169c 1617 data->revision = sio_data->revision;
b74f3fdd 1618 data->name = names[sio_data->type];
1da177e4
LT		 1619
1620 /* Now, we do the remaining detection. */
b74f3fdd 1621 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1622 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
8e9afcbb
JD		 1623 err = -ENODEV;
1624 goto ERROR2;
1da177e4
LT		 1625 }
1626
b74f3fdd 1627 platform_set_drvdata(pdev, data);
1da177e4 1628
9a61bf63 1629 mutex_init(&data->update_lock);
1da177e4 1630
1da177e4 1631 /* Check PWM configuration */
b74f3fdd 1632 enable_pwm_interface = it87_check_pwm(dev);
1da177e4
LT		 1633
1634 /* Initialize the IT87 chip */
b74f3fdd 1635 it87_init_device(pdev);
1da177e4
LT		 1636
1637 /* Register sysfs hooks */
5f2dc798
JD		 1638 err = sysfs_create_group(&dev->kobj, &it87_group);
1639 if (err)
b74f3fdd 1640 goto ERROR2;
17d648bf 1641
d9b327c3
JD		 1642 if (sio_data->beep_pin) {
1643 err = sysfs_create_group(&dev->kobj, &it87_group_beep);
1644 if (err)
1645 goto ERROR4;
1646 }
1647
9060f8bd 1648 /* Do not create fan files for disabled fans */
723a0aa0 1649 fan_group = it87_get_fan_group(data);
d9b327c3 1650 fan_beep_need_rw = 1;
723a0aa0
JD		 1651 for (i = 0; i < 5; i++) {
1652 if (!(data->has_fan & (1 << i)))
1653 continue;
1654 err = sysfs_create_group(&dev->kobj, &fan_group[i]);
1655 if (err)
1656 goto ERROR4;
d9b327c3
JD		 1657
1658 if (sio_data->beep_pin) {
1659 err = sysfs_create_file(&dev->kobj,
1660 it87_attributes_fan_beep[i]);
1661 if (err)
1662 goto ERROR4;
1663 if (!fan_beep_need_rw)
1664 continue;
1665
1666 /* As we have a single beep enable bit for all fans,
1667 * only the first enabled fan has a writable attribute
1668 * for it. */
1669 if (sysfs_chmod_file(&dev->kobj,
1670 it87_attributes_fan_beep[i],
1671 S_IRUGO | S_IWUSR))
1672 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
1673 i + 1);
1674 fan_beep_need_rw = 0;
1675 }
17d648bf
JD		 1676 }
1677
1da177e4 1678 if (enable_pwm_interface) {
723a0aa0
JD		 1679 for (i = 0; i < 3; i++) {
1680 if (sio_data->skip_pwm & (1 << i))
1681 continue;
1682 err = sysfs_create_group(&dev->kobj,
1683 &it87_group_pwm[i]);
1684 if (err)
98dd22c3 1685 goto ERROR4;
4f3f51bc
JD		 1686
1687 if (!has_old_autopwm(data))
1688 continue;
1689 err = sysfs_create_group(&dev->kobj,
1690 &it87_group_autopwm[i]);
1691 if (err)
1692 goto ERROR4;
98dd22c3 1693 }
1da177e4
LT		 1694 }
1695
895ff267 1696 if (!sio_data->skip_vid) {
303760b4 1697 data->vrm = vid_which_vrm();
87673dd7 1698 /* VID reading from Super-I/O config space if available */
b74f3fdd 1699 data->vid = sio_data->vid_value;
6a8d7acf
JD		 1700 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
1701 if (err)
87808be4
JD		 1702 goto ERROR4;
1703 }
1704
1beeffe4
TJ		 1705 data->hwmon_dev = hwmon_device_register(dev);
1706 if (IS_ERR(data->hwmon_dev)) {
1707 err = PTR_ERR(data->hwmon_dev);
87808be4 1708 goto ERROR4;
1da177e4
LT		 1709 }
1710
1711 return 0;
1712
87808be4 1713ERROR4:
723a0aa0 1714 it87_remove_files(dev);
1da177e4 1715ERROR2:
b74f3fdd 1716 platform_set_drvdata(pdev, NULL);
1da177e4
LT		 1717 kfree(data);
1718ERROR1:
87b4b663 1719 release_region(res->start, IT87_EC_EXTENT);
1da177e4
LT		 1720ERROR0:
1721 return err;
1722}
1723
b74f3fdd 1724static int __devexit it87_remove(struct platform_device *pdev)
1da177e4 1725{
b74f3fdd 1726 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 1727
1beeffe4 1728 hwmon_device_unregister(data->hwmon_dev);
723a0aa0 1729 it87_remove_files(&pdev->dev);
943b0830 1730
87b4b663 1731 release_region(data->addr, IT87_EC_EXTENT);
b74f3fdd 1732 platform_set_drvdata(pdev, NULL);
943b0830 1733 kfree(data);
1da177e4
LT		 1734
1735 return 0;
1736}
1737
7f999aa7 1738/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1739 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1740 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1741static int it87_read_value(struct it87_data *data, u8 reg)
1da177e4 1742{
b74f3fdd 1743 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1744 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1745}
1746
7f999aa7 1747/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1748 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1749 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1750static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
1da177e4 1751{
b74f3fdd 1752 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1753 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1754}
1755
1756/* Return 1 if and only if the PWM interface is safe to use */
b74f3fdd 1757static int __devinit it87_check_pwm(struct device *dev)
1da177e4 1758{
b74f3fdd 1759 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1760 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1761 * and polarity set to active low is sign that this is the case so we
1762 * disable pwm control to protect the user. */
b74f3fdd 1763 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1da177e4
LT		 1764 if ((tmp & 0x87) == 0) {
1765 if (fix_pwm_polarity) {
1766 /* The user asks us to attempt a chip reconfiguration.
1767 * This means switching to active high polarity and
1768 * inverting all fan speed values. */
1769 int i;
1770 u8 pwm[3];
1771
1772 for (i = 0; i < 3; i++)
b74f3fdd 1773 pwm[i] = it87_read_value(data,
1da177e4
LT		 1774 IT87_REG_PWM(i));
1775
1776 /* If any fan is in automatic pwm mode, the polarity
1777 * might be correct, as suspicious as it seems, so we
1778 * better don't change anything (but still disable the
1779 * PWM interface). */
1780 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
b74f3fdd 1781 dev_info(dev, "Reconfiguring PWM to "
1da177e4 1782 "active high polarity\n");
b74f3fdd 1783 it87_write_value(data, IT87_REG_FAN_CTL,
1da177e4
LT		 1784 tmp | 0x87);
1785 for (i = 0; i < 3; i++)
b74f3fdd 1786 it87_write_value(data,
1da177e4
LT		 1787 IT87_REG_PWM(i),
1788 0x7f & ~pwm[i]);
1789 return 1;
1790 }
1791
b74f3fdd 1792 dev_info(dev, "PWM configuration is "
1da177e4
LT		 1793 "too broken to be fixed\n");
1794 }
1795
b74f3fdd 1796 dev_info(dev, "Detected broken BIOS "
1da177e4
LT		 1797 "defaults, disabling PWM interface\n");
1798 return 0;
1799 } else if (fix_pwm_polarity) {
b74f3fdd 1800 dev_info(dev, "PWM configuration looks "
1da177e4
LT		 1801 "sane, won't touch\n");
1802 }
1803
1804 return 1;
1805}
1806
1807/* Called when we have found a new IT87. */
b74f3fdd 1808static void __devinit it87_init_device(struct platform_device *pdev)
1da177e4 1809{
591ec650 1810 struct it87_sio_data *sio_data = pdev->dev.platform_data;
b74f3fdd 1811 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 1812 int tmp, i;
591ec650 1813 u8 mask;
1da177e4 1814
b99883dc
JD		 1815 /* For each PWM channel:
1816 * - If it is in automatic mode, setting to manual mode should set
1817 * the fan to full speed by default.
1818 * - If it is in manual mode, we need a mapping to temperature
1819 * channels to use when later setting to automatic mode later.
1820 * Use a 1:1 mapping by default (we are clueless.)
1821 * In both cases, the value can (and should) be changed by the user
1822 * prior to switching to a different mode. */
1da177e4 1823 for (i = 0; i < 3; i++) {
b99883dc
JD		 1824 data->pwm_temp_map[i] = i;
1825 data->pwm_duty[i] = 0x7f; /* Full speed */
4f3f51bc 1826 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
1da177e4
LT		 1827 }
1828
c5df9b7a
JD		 1829 /* Some chips seem to have default value 0xff for all limit
1830 * registers. For low voltage limits it makes no sense and triggers
1831 * alarms, so change to 0 instead. For high temperature limits, it
1832 * means -1 degree C, which surprisingly doesn't trigger an alarm,
1833 * but is still confusing, so change to 127 degrees C. */
1834 for (i = 0; i < 8; i++) {
b74f3fdd 1835 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
c5df9b7a 1836 if (tmp == 0xff)
b74f3fdd 1837 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
c5df9b7a
JD		 1838 }
1839 for (i = 0; i < 3; i++) {
b74f3fdd 1840 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
c5df9b7a 1841 if (tmp == 0xff)
b74f3fdd 1842 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
c5df9b7a
JD		 1843 }
1844
a00afb97
JD		 1845 /* Temperature channels are not forcibly enabled, as they can be
1846 * set to two different sensor types and we can't guess which one
1847 * is correct for a given system. These channels can be enabled at
1848 * run-time through the temp{1-3}_type sysfs accessors if needed. */
1da177e4
LT		 1849
1850 /* Check if voltage monitors are reset manually or by some reason */
b74f3fdd 1851 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
1da177e4
LT		 1852 if ((tmp & 0xff) == 0) {
1853 /* Enable all voltage monitors */
b74f3fdd 1854 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
1da177e4
LT		 1855 }
1856
1857 /* Check if tachometers are reset manually or by some reason */
591ec650 1858 mask = 0x70 & ~(sio_data->skip_fan << 4);
b74f3fdd 1859 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
591ec650 1860 if ((data->fan_main_ctrl & mask) == 0) {
1da177e4 1861 /* Enable all fan tachometers */
591ec650 1862 data->fan_main_ctrl |= mask;
5f2dc798
JD		 1863 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1864 data->fan_main_ctrl);
1da177e4 1865 }
9060f8bd 1866 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
1da177e4 1867
17d648bf 1868 /* Set tachometers to 16-bit mode if needed */
0475169c 1869 if (has_16bit_fans(data)) {
b74f3fdd 1870 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
9060f8bd 1871 if (~tmp & 0x07 & data->has_fan) {
b74f3fdd 1872 dev_dbg(&pdev->dev,
17d648bf 1873 "Setting fan1-3 to 16-bit mode\n");
b74f3fdd 1874 it87_write_value(data, IT87_REG_FAN_16BIT,
17d648bf
JD		 1875 tmp | 0x07);
1876 }
816d8c6a
AP		 1877 /* IT8705F only supports three fans. */
1878 if (data->type != it87) {
1879 if (tmp & (1 << 4))
1880 data->has_fan |= (1 << 3); /* fan4 enabled */
1881 if (tmp & (1 << 5))
1882 data->has_fan |= (1 << 4); /* fan5 enabled */
1883 }
17d648bf
JD		 1884 }
1885
591ec650
JD		 1886 /* Fan input pins may be used for alternative functions */
1887 data->has_fan &= ~sio_data->skip_fan;
1888
1da177e4 1889 /* Start monitoring */
b74f3fdd 1890 it87_write_value(data, IT87_REG_CONFIG,
1891 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
1da177e4
LT		 1892 | (update_vbat ? 0x41 : 0x01));
1893}
1894
b99883dc
JD		 1895static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
1896{
1897 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
1898 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
1899 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
1900 else /* Manual mode */
1901 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
4f3f51bc
JD		 1902
1903 if (has_old_autopwm(data)) {
1904 int i;
1905
1906 for (i = 0; i < 5 ; i++)
1907 data->auto_temp[nr][i] = it87_read_value(data,
1908 IT87_REG_AUTO_TEMP(nr, i));
1909 for (i = 0; i < 3 ; i++)
1910 data->auto_pwm[nr][i] = it87_read_value(data,
1911 IT87_REG_AUTO_PWM(nr, i));
1912 }
b99883dc
JD		 1913}
1914
1da177e4
LT		 1915static struct it87_data *it87_update_device(struct device *dev)
1916{
b74f3fdd 1917 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1918 int i;
1919
9a61bf63 1920 mutex_lock(&data->update_lock);
1da177e4
LT		 1921
1922 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1923 || !data->valid) {
1da177e4
LT		 1924 if (update_vbat) {
1925 /* Cleared after each update, so reenable. Value
5f2dc798 1926 returned by this read will be previous value */
b74f3fdd 1927 it87_write_value(data, IT87_REG_CONFIG,
5f2dc798 1928 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
1da177e4
LT		 1929 }
1930 for (i = 0; i <= 7; i++) {
1931 data->in[i] =
5f2dc798 1932 it87_read_value(data, IT87_REG_VIN(i));
1da177e4 1933 data->in_min[i] =
5f2dc798 1934 it87_read_value(data, IT87_REG_VIN_MIN(i));
1da177e4 1935 data->in_max[i] =
5f2dc798 1936 it87_read_value(data, IT87_REG_VIN_MAX(i));
1da177e4 1937 }
3543a53f 1938 /* in8 (battery) has no limit registers */
5f2dc798 1939 data->in[8] = it87_read_value(data, IT87_REG_VIN(8));
1da177e4 1940
c7f1f716 1941 for (i = 0; i < 5; i++) {
9060f8bd
JD		 1942 /* Skip disabled fans */
1943 if (!(data->has_fan & (1 << i)))
1944 continue;
1945
1da177e4 1946 data->fan_min[i] =
5f2dc798 1947 it87_read_value(data, IT87_REG_FAN_MIN[i]);
b74f3fdd 1948 data->fan[i] = it87_read_value(data,
c7f1f716 1949 IT87_REG_FAN[i]);
17d648bf 1950 /* Add high byte if in 16-bit mode */
0475169c 1951 if (has_16bit_fans(data)) {
b74f3fdd 1952 data->fan[i] |= it87_read_value(data,
c7f1f716 1953 IT87_REG_FANX[i]) << 8;
b74f3fdd 1954 data->fan_min[i] |= it87_read_value(data,
c7f1f716 1955 IT87_REG_FANX_MIN[i]) << 8;
17d648bf 1956 }
1da177e4
LT		 1957 }
1958 for (i = 0; i < 3; i++) {
1959 data->temp[i] =
5f2dc798 1960 it87_read_value(data, IT87_REG_TEMP(i));
1da177e4 1961 data->temp_high[i] =
5f2dc798 1962 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
1da177e4 1963 data->temp_low[i] =
5f2dc798 1964 it87_read_value(data, IT87_REG_TEMP_LOW(i));
1da177e4
LT		 1965 }
1966
17d648bf 1967 /* Newer chips don't have clock dividers */
0475169c 1968 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
b74f3fdd 1969 i = it87_read_value(data, IT87_REG_FAN_DIV);
17d648bf
JD		 1970 data->fan_div[0] = i & 0x07;
1971 data->fan_div[1] = (i >> 3) & 0x07;
1972 data->fan_div[2] = (i & 0x40) ? 3 : 1;
1973 }
1da177e4
LT		 1974
1975 data->alarms =
b74f3fdd 1976 it87_read_value(data, IT87_REG_ALARM1) |
1977 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
1978 (it87_read_value(data, IT87_REG_ALARM3) << 16);
d9b327c3 1979 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
b99883dc 1980
b74f3fdd 1981 data->fan_main_ctrl = it87_read_value(data,
1982 IT87_REG_FAN_MAIN_CTRL);
1983 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
b99883dc
JD		 1984 for (i = 0; i < 3; i++)
1985 it87_update_pwm_ctrl(data, i);
b74f3fdd 1986
1987 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
0475169c 1988 /* The 8705 does not have VID capability.
b4da93e4
JMS		 1989 The 8718 and the 8720 don't use IT87_REG_VID for the
1990 same purpose. */
17d648bf 1991 if (data->type == it8712 || data->type == it8716) {
b74f3fdd 1992 data->vid = it87_read_value(data, IT87_REG_VID);
17d648bf
JD		 1993 /* The older IT8712F revisions had only 5 VID pins,
1994 but we assume it is always safe to read 6 bits. */
1995 data->vid &= 0x3f;
1da177e4
LT		 1996 }
1997 data->last_updated = jiffies;
1998 data->valid = 1;
1999 }
2000
9a61bf63 2001 mutex_unlock(&data->update_lock);
1da177e4
LT		 2002
2003 return data;
2004}
2005
b74f3fdd 2006static int __init it87_device_add(unsigned short address,
2007 const struct it87_sio_data *sio_data)
2008{
2009 struct resource res = {
87b4b663
BH		 2010 .start = address + IT87_EC_OFFSET,
2011 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
b74f3fdd 2012 .name = DRVNAME,
2013 .flags = IORESOURCE_IO,
2014 };
2015 int err;
2016
b9acb64a
JD		 2017 err = acpi_check_resource_conflict(&res);
2018 if (err)
2019 goto exit;
2020
b74f3fdd 2021 pdev = platform_device_alloc(DRVNAME, address);
2022 if (!pdev) {
2023 err = -ENOMEM;
2024 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
2025 goto exit;
2026 }
2027
2028 err = platform_device_add_resources(pdev, &res, 1);
2029 if (err) {
2030 printk(KERN_ERR DRVNAME ": Device resource addition failed "
2031 "(%d)\n", err);
2032 goto exit_device_put;
2033 }
2034
2035 err = platform_device_add_data(pdev, sio_data,
2036 sizeof(struct it87_sio_data));
2037 if (err) {
2038 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
2039 goto exit_device_put;
2040 }
2041
2042 err = platform_device_add(pdev);
2043 if (err) {
2044 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
2045 err);
2046 goto exit_device_put;
2047 }
2048
2049 return 0;
2050
2051exit_device_put:
2052 platform_device_put(pdev);
2053exit:
2054 return err;
2055}
2056
1da177e4
LT		 2057static int __init sm_it87_init(void)
2058{
b74f3fdd 2059 int err;
5f2dc798 2060 unsigned short isa_address = 0;
b74f3fdd 2061 struct it87_sio_data sio_data;
2062
98dd22c3 2063 memset(&sio_data, 0, sizeof(struct it87_sio_data));
b74f3fdd 2064 err = it87_find(&isa_address, &sio_data);
2065 if (err)
2066 return err;
2067 err = platform_driver_register(&it87_driver);
2068 if (err)
2069 return err;
fde09509 2070
b74f3fdd 2071 err = it87_device_add(isa_address, &sio_data);
5f2dc798 2072 if (err) {
b74f3fdd 2073 platform_driver_unregister(&it87_driver);
2074 return err;
2075 }
2076
2077 return 0;
1da177e4
LT		 2078}
2079
2080static void __exit sm_it87_exit(void)
2081{
b74f3fdd 2082 platform_device_unregister(pdev);
2083 platform_driver_unregister(&it87_driver);
1da177e4
LT		 2084}
2085
2086
f1d8e332 2087MODULE_AUTHOR("Chris Gauthron, "
b19367c6 2088 "Jean Delvare <khali@linux-fr.org>");
b4da93e4 2089MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
1da177e4
LT		 2090module_param(update_vbat, bool, 0);
2091MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2092module_param(fix_pwm_polarity, bool, 0);
5f2dc798
JD		 2093MODULE_PARM_DESC(fix_pwm_polarity,
2094 "Force PWM polarity to active high (DANGEROUS)");
1da177e4
LT		 2095MODULE_LICENSE("GPL");
2096
2097module_init(sm_it87_init);
2098module_exit(sm_it87_exit);
Linux 6.x block layer and io_uring tree(s)