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hwmon: (hwmon-vid) Fix multi-line comments
[deliverable/linux.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
44c1bcd4 18 * IT8721F Super I/O chip w/LPC interface
5f2dc798 19 * IT8726F Super I/O chip w/LPC interface
16b5dda2 20 * IT8728F Super I/O chip w/LPC interface
44c1bcd4 21 * IT8758E Super I/O chip w/LPC interface
5f2dc798
JD		 22 * Sis950 A clone of the IT8705F
23 *
24 * Copyright (C) 2001 Chris Gauthron
25 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
26 *
27 * This program is free software; you can redistribute it and/or modify
28 * it under the terms of the GNU General Public License as published by
29 * the Free Software Foundation; either version 2 of the License, or
30 * (at your option) any later version.
31 *
32 * This program is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
35 * GNU General Public License for more details.
36 *
37 * You should have received a copy of the GNU General Public License
38 * along with this program; if not, write to the Free Software
39 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
40 */
1da177e4 41
a8ca1037
JP		 42#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
43
1da177e4
LT		 44#include <linux/module.h>
45#include <linux/init.h>
46#include <linux/slab.h>
47#include <linux/jiffies.h>
b74f3fdd 48#include <linux/platform_device.h>
943b0830 49#include <linux/hwmon.h>
303760b4
JD		 50#include <linux/hwmon-sysfs.h>
51#include <linux/hwmon-vid.h>
943b0830 52#include <linux/err.h>
9a61bf63 53#include <linux/mutex.h>
87808be4 54#include <linux/sysfs.h>
98dd22c3
JD		 55#include <linux/string.h>
56#include <linux/dmi.h>
b9acb64a 57#include <linux/acpi.h>
6055fae8 58#include <linux/io.h>
1da177e4 59
b74f3fdd 60#define DRVNAME "it87"
1da177e4 61
16b5dda2 62enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 };
1da177e4 63
67b671bc
JD		 64static unsigned short force_id;
65module_param(force_id, ushort, 0);
66MODULE_PARM_DESC(force_id, "Override the detected device ID");
67
b74f3fdd 68static struct platform_device *pdev;
69
1da177e4
LT		 70#define REG 0x2e /* The register to read/write */
71#define DEV 0x07 /* Register: Logical device select */
72#define VAL 0x2f /* The value to read/write */
73#define PME 0x04 /* The device with the fan registers in it */
b4da93e4
JMS		 74
75/* The device with the IT8718F/IT8720F VID value in it */
76#define GPIO 0x07
77
1da177e4
LT		 78#define DEVID 0x20 /* Register: Device ID */
79#define DEVREV 0x22 /* Register: Device Revision */
80
5b0380c9 81static inline int superio_inb(int reg)
1da177e4
LT		 82{
83 outb(reg, REG);
84 return inb(VAL);
85}
86
5b0380c9 87static inline void superio_outb(int reg, int val)
436cad2a
JD		 88{
89 outb(reg, REG);
90 outb(val, VAL);
91}
92
1da177e4
LT		 93static int superio_inw(int reg)
94{
95 int val;
96 outb(reg++, REG);
97 val = inb(VAL) << 8;
98 outb(reg, REG);
99 val |= inb(VAL);
100 return val;
101}
102
5b0380c9 103static inline void superio_select(int ldn)
1da177e4
LT		 104{
105 outb(DEV, REG);
87673dd7 106 outb(ldn, VAL);
1da177e4
LT		 107}
108
5b0380c9 109static inline int superio_enter(void)
1da177e4 110{
5b0380c9
NG		 111 /*
112 * Try to reserve REG and REG + 1 for exclusive access.
113 */
114 if (!request_muxed_region(REG, 2, DRVNAME))
115 return -EBUSY;
116
1da177e4
LT		 117 outb(0x87, REG);
118 outb(0x01, REG);
119 outb(0x55, REG);
120 outb(0x55, REG);
5b0380c9 121 return 0;
1da177e4
LT		 122}
123
5b0380c9 124static inline void superio_exit(void)
1da177e4
LT		 125{
126 outb(0x02, REG);
127 outb(0x02, VAL);
5b0380c9 128 release_region(REG, 2);
1da177e4
LT		 129}
130
87673dd7 131/* Logical device 4 registers */
1da177e4
LT		 132#define IT8712F_DEVID 0x8712
133#define IT8705F_DEVID 0x8705
17d648bf 134#define IT8716F_DEVID 0x8716
87673dd7 135#define IT8718F_DEVID 0x8718
b4da93e4 136#define IT8720F_DEVID 0x8720
44c1bcd4 137#define IT8721F_DEVID 0x8721
08a8f6e9 138#define IT8726F_DEVID 0x8726
16b5dda2 139#define IT8728F_DEVID 0x8728
1da177e4
LT		 140#define IT87_ACT_REG 0x30
141#define IT87_BASE_REG 0x60
142
87673dd7 143/* Logical device 7 registers (IT8712F and later) */
895ff267 144#define IT87_SIO_GPIO3_REG 0x27
591ec650 145#define IT87_SIO_GPIO5_REG 0x29
87673dd7
JD		 146#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
147#define IT87_SIO_VID_REG 0xfc /* VID value */
d9b327c3 148#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
87673dd7 149
1da177e4 150/* Update battery voltage after every reading if true */
90ab5ee9 151static bool update_vbat;
1da177e4
LT		 152
153/* Not all BIOSes properly configure the PWM registers */
90ab5ee9 154static bool fix_pwm_polarity;
1da177e4 155
1da177e4
LT		 156/* Many IT87 constants specified below */
157
158/* Length of ISA address segment */
159#define IT87_EXTENT 8
160
87b4b663
BH		 161/* Length of ISA address segment for Environmental Controller */
162#define IT87_EC_EXTENT 2
163
164/* Offset of EC registers from ISA base address */
165#define IT87_EC_OFFSET 5
166
167/* Where are the ISA address/data registers relative to the EC base address */
168#define IT87_ADDR_REG_OFFSET 0
169#define IT87_DATA_REG_OFFSET 1
1da177e4
LT		 170
171/*----- The IT87 registers -----*/
172
173#define IT87_REG_CONFIG 0x00
174
175#define IT87_REG_ALARM1 0x01
176#define IT87_REG_ALARM2 0x02
177#define IT87_REG_ALARM3 0x03
178
b4da93e4
JMS		 179/* The IT8718F and IT8720F have the VID value in a different register, in
180 Super-I/O configuration space. */
1da177e4 181#define IT87_REG_VID 0x0a
0475169c
AP		 182/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
183 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
184 mode. */
1da177e4 185#define IT87_REG_FAN_DIV 0x0b
17d648bf 186#define IT87_REG_FAN_16BIT 0x0c
1da177e4
LT		 187
188/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
189
c7f1f716
JD		 190static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
191static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
192static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
193static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
1da177e4
LT		 194#define IT87_REG_FAN_MAIN_CTRL 0x13
195#define IT87_REG_FAN_CTL 0x14
196#define IT87_REG_PWM(nr) (0x15 + (nr))
6229cdb2 197#define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
1da177e4
LT		 198
199#define IT87_REG_VIN(nr) (0x20 + (nr))
200#define IT87_REG_TEMP(nr) (0x29 + (nr))
201
202#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
203#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
204#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
205#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
206
1da177e4
LT		 207#define IT87_REG_VIN_ENABLE 0x50
208#define IT87_REG_TEMP_ENABLE 0x51
d9b327c3 209#define IT87_REG_BEEP_ENABLE 0x5c
1da177e4
LT		 210
211#define IT87_REG_CHIPID 0x58
212
4f3f51bc
JD		 213#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
214#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
215
1da177e4 216
b74f3fdd 217struct it87_sio_data {
218 enum chips type;
219 /* Values read from Super-I/O config space */
0475169c 220 u8 revision;
b74f3fdd 221 u8 vid_value;
d9b327c3 222 u8 beep_pin;
738e5e05 223 u8 internal; /* Internal sensors can be labeled */
591ec650 224 /* Features skipped based on config or DMI */
895ff267 225 u8 skip_vid;
591ec650 226 u8 skip_fan;
98dd22c3 227 u8 skip_pwm;
b74f3fdd 228};
229
ed6bafbf
JD		 230/* For each registered chip, we need to keep some data in memory.
231 The structure is dynamically allocated. */
1da177e4 232struct it87_data {
1beeffe4 233 struct device *hwmon_dev;
1da177e4 234 enum chips type;
0475169c 235 u8 revision;
1da177e4 236
b74f3fdd 237 unsigned short addr;
238 const char *name;
9a61bf63 239 struct mutex update_lock;
1da177e4
LT		 240 char valid; /* !=0 if following fields are valid */
241 unsigned long last_updated; /* In jiffies */
242
44c1bcd4 243 u16 in_scaled; /* Internal voltage sensors are scaled */
1da177e4 244 u8 in[9]; /* Register value */
3543a53f
JD		 245 u8 in_max[8]; /* Register value */
246 u8 in_min[8]; /* Register value */
9060f8bd 247 u8 has_fan; /* Bitfield, fans enabled */
c7f1f716
JD		 248 u16 fan[5]; /* Register values, possibly combined */
249 u16 fan_min[5]; /* Register values, possibly combined */
e267d250
JD		 250 s8 temp[3]; /* Register value */
251 s8 temp_high[3]; /* Register value */
252 s8 temp_low[3]; /* Register value */
1da177e4
LT		 253 u8 sensor; /* Register value */
254 u8 fan_div[3]; /* Register encoding, shifted right */
255 u8 vid; /* Register encoding, combined */
a7be58a1 256 u8 vrm;
1da177e4 257 u32 alarms; /* Register encoding, combined */
d9b327c3 258 u8 beeps; /* Register encoding */
1da177e4 259 u8 fan_main_ctrl; /* Register value */
f8d0c19a 260 u8 fan_ctl; /* Register value */
b99883dc 261
6229cdb2
JD		 262 /* The following 3 arrays correspond to the same registers up to
263 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
264 * 7, and we want to preserve settings on mode changes, so we have
265 * to track all values separately.
266 * Starting with the IT8721F, the manual PWM duty cycles are stored
267 * in separate registers (8-bit values), so the separate tracking
268 * is no longer needed, but it is still done to keep the driver
269 * simple. */
b99883dc 270 u8 pwm_ctrl[3]; /* Register value */
6229cdb2 271 u8 pwm_duty[3]; /* Manual PWM value set by user */
b99883dc 272 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
4f3f51bc
JD		 273
274 /* Automatic fan speed control registers */
275 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
276 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
1da177e4 277};
0df6454d 278
16b5dda2
JD		 279static inline int has_12mv_adc(const struct it87_data *data)
280{
281 /*
282 * IT8721F and later have a 12 mV ADC, also with internal scaling
283 * on selected inputs.
284 */
285 return data->type == it8721
286 || data->type == it8728;
287}
288
289static inline int has_newer_autopwm(const struct it87_data *data)
290{
291 /*
292 * IT8721F and later have separate registers for the temperature
293 * mapping and the manual duty cycle.
294 */
295 return data->type == it8721
296 || data->type == it8728;
297}
298
44c1bcd4
JD		 299static u8 in_to_reg(const struct it87_data *data, int nr, long val)
300{
301 long lsb;
302
16b5dda2 303 if (has_12mv_adc(data)) {
44c1bcd4
JD		 304 if (data->in_scaled & (1 << nr))
305 lsb = 24;
306 else
307 lsb = 12;
308 } else
309 lsb = 16;
310
311 val = DIV_ROUND_CLOSEST(val, lsb);
312 return SENSORS_LIMIT(val, 0, 255);
313}
314
315static int in_from_reg(const struct it87_data *data, int nr, int val)
316{
16b5dda2 317 if (has_12mv_adc(data)) {
44c1bcd4
JD		 318 if (data->in_scaled & (1 << nr))
319 return val * 24;
320 else
321 return val * 12;
322 } else
323 return val * 16;
324}
0df6454d
JD		 325
326static inline u8 FAN_TO_REG(long rpm, int div)
327{
328 if (rpm == 0)
329 return 255;
330 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
331 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
332 254);
333}
334
335static inline u16 FAN16_TO_REG(long rpm)
336{
337 if (rpm == 0)
338 return 0xffff;
339 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
340}
341
342#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
343 1350000 / ((val) * (div)))
344/* The divider is fixed to 2 in 16-bit mode */
345#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
346 1350000 / ((val) * 2))
347
348#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
349 ((val) + 500) / 1000), -128, 127))
350#define TEMP_FROM_REG(val) ((val) * 1000)
351
44c1bcd4
JD		 352static u8 pwm_to_reg(const struct it87_data *data, long val)
353{
16b5dda2 354 if (has_newer_autopwm(data))
44c1bcd4
JD		 355 return val;
356 else
357 return val >> 1;
358}
359
360static int pwm_from_reg(const struct it87_data *data, u8 reg)
361{
16b5dda2 362 if (has_newer_autopwm(data))
44c1bcd4
JD		 363 return reg;
364 else
365 return (reg & 0x7f) << 1;
366}
367
0df6454d
JD		 368
369static int DIV_TO_REG(int val)
370{
371 int answer = 0;
372 while (answer < 7 && (val >>= 1))
373 answer++;
374 return answer;
375}
376#define DIV_FROM_REG(val) (1 << (val))
377
378static const unsigned int pwm_freq[8] = {
379 48000000 / 128,
380 24000000 / 128,
381 12000000 / 128,
382 8000000 / 128,
383 6000000 / 128,
384 3000000 / 128,
385 1500000 / 128,
386 750000 / 128,
387};
1da177e4 388
0475169c
AP		 389static inline int has_16bit_fans(const struct it87_data *data)
390{
816d8c6a 391 /* IT8705F Datasheet 0.4.1, 3h == Version G.
859b9ef3 392 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
816d8c6a
AP		 393 These are the first revisions with 16bit tachometer support. */
394 return (data->type == it87 && data->revision >= 0x03)
859b9ef3 395 || (data->type == it8712 && data->revision >= 0x08)
0475169c 396 || data->type == it8716
b4da93e4 397 || data->type == it8718
44c1bcd4 398 || data->type == it8720
16b5dda2
JD		 399 || data->type == it8721
400 || data->type == it8728;
0475169c 401}
1da177e4 402
4f3f51bc
JD		 403static inline int has_old_autopwm(const struct it87_data *data)
404{
405 /* The old automatic fan speed control interface is implemented
406 by IT8705F chips up to revision F and IT8712F chips up to
407 revision G. */
408 return (data->type == it87 && data->revision < 0x03)
409 || (data->type == it8712 && data->revision < 0x08);
410}
411
b74f3fdd 412static int it87_probe(struct platform_device *pdev);
d0546128 413static int __devexit it87_remove(struct platform_device *pdev);
1da177e4 414
b74f3fdd 415static int it87_read_value(struct it87_data *data, u8 reg);
416static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
1da177e4 417static struct it87_data *it87_update_device(struct device *dev);
b74f3fdd 418static int it87_check_pwm(struct device *dev);
419static void it87_init_device(struct platform_device *pdev);
1da177e4
LT		 420
421
b74f3fdd 422static struct platform_driver it87_driver = {
cdaf7934 423 .driver = {
87218842 424 .owner = THIS_MODULE,
b74f3fdd 425 .name = DRVNAME,
cdaf7934 426 },
b74f3fdd 427 .probe = it87_probe,
428 .remove = __devexit_p(it87_remove),
fde09509
JD		 429};
430
20ad93d4
JD		 431static ssize_t show_in(struct device *dev, struct device_attribute *attr,
432 char *buf)
1da177e4 433{
20ad93d4
JD		 434 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
435 int nr = sensor_attr->index;
436
1da177e4 437 struct it87_data *data = it87_update_device(dev);
44c1bcd4 438 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr]));
1da177e4
LT		 439}
440
20ad93d4
JD		 441static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
442 char *buf)
1da177e4 443{
20ad93d4
JD		 444 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
445 int nr = sensor_attr->index;
446
1da177e4 447 struct it87_data *data = it87_update_device(dev);
44c1bcd4 448 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_min[nr]));
1da177e4
LT		 449}
450
20ad93d4
JD		 451static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
452 char *buf)
1da177e4 453{
20ad93d4
JD		 454 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
455 int nr = sensor_attr->index;
456
1da177e4 457 struct it87_data *data = it87_update_device(dev);
44c1bcd4 458 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_max[nr]));
1da177e4
LT		 459}
460
20ad93d4
JD		 461static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
462 const char *buf, size_t count)
1da177e4 463{
20ad93d4
JD		 464 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
465 int nr = sensor_attr->index;
466
b74f3fdd 467 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 468 unsigned long val;
469
179c4fdb 470 if (kstrtoul(buf, 10, &val) < 0)
f5f64501 471 return -EINVAL;
1da177e4 472
9a61bf63 473 mutex_lock(&data->update_lock);
44c1bcd4 474 data->in_min[nr] = in_to_reg(data, nr, val);
b74f3fdd 475 it87_write_value(data, IT87_REG_VIN_MIN(nr),
1da177e4 476 data->in_min[nr]);
9a61bf63 477 mutex_unlock(&data->update_lock);
1da177e4
LT		 478 return count;
479}
20ad93d4
JD		 480static ssize_t set_in_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 unsigned long val;
488
179c4fdb 489 if (kstrtoul(buf, 10, &val) < 0)
f5f64501 490 return -EINVAL;
1da177e4 491
9a61bf63 492 mutex_lock(&data->update_lock);
44c1bcd4 493 data->in_max[nr] = in_to_reg(data, nr, val);
b74f3fdd 494 it87_write_value(data, IT87_REG_VIN_MAX(nr),
1da177e4 495 data->in_max[nr]);
9a61bf63 496 mutex_unlock(&data->update_lock);
1da177e4
LT		 497 return count;
498}
499
500#define show_in_offset(offset) \
20ad93d4
JD		 501static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
502 show_in, NULL, offset);
1da177e4
LT		 503
504#define limit_in_offset(offset) \
20ad93d4
JD		 505static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
506 show_in_min, set_in_min, offset); \
507static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
508 show_in_max, set_in_max, offset);
1da177e4
LT		 509
510show_in_offset(0);
511limit_in_offset(0);
512show_in_offset(1);
513limit_in_offset(1);
514show_in_offset(2);
515limit_in_offset(2);
516show_in_offset(3);
517limit_in_offset(3);
518show_in_offset(4);
519limit_in_offset(4);
520show_in_offset(5);
521limit_in_offset(5);
522show_in_offset(6);
523limit_in_offset(6);
524show_in_offset(7);
525limit_in_offset(7);
526show_in_offset(8);
527
528/* 3 temperatures */
20ad93d4
JD		 529static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
530 char *buf)
1da177e4 531{
20ad93d4
JD		 532 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
533 int nr = sensor_attr->index;
534
1da177e4
LT		 535 struct it87_data *data = it87_update_device(dev);
536 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
537}
20ad93d4
JD		 538static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
539 char *buf)
1da177e4 540{
20ad93d4
JD		 541 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
542 int nr = sensor_attr->index;
543
1da177e4
LT		 544 struct it87_data *data = it87_update_device(dev);
545 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
546}
20ad93d4
JD		 547static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
548 char *buf)
1da177e4 549{
20ad93d4
JD		 550 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
551 int nr = sensor_attr->index;
552
1da177e4
LT		 553 struct it87_data *data = it87_update_device(dev);
554 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
555}
20ad93d4
JD		 556static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
557 const char *buf, size_t count)
1da177e4 558{
20ad93d4
JD		 559 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
560 int nr = sensor_attr->index;
561
b74f3fdd 562 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 563 long val;
564
179c4fdb 565 if (kstrtol(buf, 10, &val) < 0)
f5f64501 566 return -EINVAL;
1da177e4 567
9a61bf63 568 mutex_lock(&data->update_lock);
1da177e4 569 data->temp_high[nr] = TEMP_TO_REG(val);
b74f3fdd 570 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
9a61bf63 571 mutex_unlock(&data->update_lock);
1da177e4
LT		 572 return count;
573}
20ad93d4
JD		 574static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
575 const char *buf, size_t count)
1da177e4 576{
20ad93d4
JD		 577 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
578 int nr = sensor_attr->index;
579
b74f3fdd 580 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 581 long val;
582
179c4fdb 583 if (kstrtol(buf, 10, &val) < 0)
f5f64501 584 return -EINVAL;
1da177e4 585
9a61bf63 586 mutex_lock(&data->update_lock);
1da177e4 587 data->temp_low[nr] = TEMP_TO_REG(val);
b74f3fdd 588 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
9a61bf63 589 mutex_unlock(&data->update_lock);
1da177e4
LT		 590 return count;
591}
592#define show_temp_offset(offset) \
20ad93d4
JD		 593static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
594 show_temp, NULL, offset - 1); \
595static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
596 show_temp_max, set_temp_max, offset - 1); \
597static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
598 show_temp_min, set_temp_min, offset - 1);
1da177e4
LT		 599
600show_temp_offset(1);
601show_temp_offset(2);
602show_temp_offset(3);
603
20ad93d4
JD		 604static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
605 char *buf)
1da177e4 606{
20ad93d4
JD		 607 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
608 int nr = sensor_attr->index;
609
1da177e4 610 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 611 u8 reg = data->sensor; /* In case the value is updated while
612 we use it */
613
1da177e4
LT		 614 if (reg & (1 << nr))
615 return sprintf(buf, "3\n"); /* thermal diode */
616 if (reg & (8 << nr))
4ed10779 617 return sprintf(buf, "4\n"); /* thermistor */
1da177e4
LT		 618 return sprintf(buf, "0\n"); /* disabled */
619}
20ad93d4
JD		 620static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
621 const char *buf, size_t count)
1da177e4 622{
20ad93d4
JD		 623 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
624 int nr = sensor_attr->index;
625
b74f3fdd 626 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 627 long val;
8acf07c5 628 u8 reg;
f5f64501 629
179c4fdb 630 if (kstrtol(buf, 10, &val) < 0)
f5f64501 631 return -EINVAL;
1da177e4 632
8acf07c5
JD		 633 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
634 reg &= ~(1 << nr);
635 reg &= ~(8 << nr);
4ed10779
JD		 636 if (val == 2) { /* backwards compatibility */
637 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
638 "instead\n");
639 val = 4;
640 }
641 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
1da177e4 642 if (val == 3)
8acf07c5 643 reg |= 1 << nr;
4ed10779 644 else if (val == 4)
8acf07c5
JD		 645 reg |= 8 << nr;
646 else if (val != 0)
1da177e4 647 return -EINVAL;
8acf07c5
JD		 648
649 mutex_lock(&data->update_lock);
650 data->sensor = reg;
b74f3fdd 651 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
2b3d1d87 652 data->valid = 0; /* Force cache refresh */
9a61bf63 653 mutex_unlock(&data->update_lock);
1da177e4
LT		 654 return count;
655}
656#define show_sensor_offset(offset) \
20ad93d4
JD		 657static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
658 show_sensor, set_sensor, offset - 1);
1da177e4
LT		 659
660show_sensor_offset(1);
661show_sensor_offset(2);
662show_sensor_offset(3);
663
664/* 3 Fans */
b99883dc
JD		 665
666static int pwm_mode(const struct it87_data *data, int nr)
667{
668 int ctrl = data->fan_main_ctrl & (1 << nr);
669
670 if (ctrl == 0) /* Full speed */
671 return 0;
672 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
673 return 2;
674 else /* Manual mode */
675 return 1;
676}
677
20ad93d4
JD		 678static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
679 char *buf)
1da177e4 680{
20ad93d4
JD		 681 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
682 int nr = sensor_attr->index;
683
1da177e4 684 struct it87_data *data = it87_update_device(dev);
5f2dc798 685 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
1da177e4
LT		 686 DIV_FROM_REG(data->fan_div[nr])));
687}
20ad93d4
JD		 688static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
689 char *buf)
1da177e4 690{
20ad93d4
JD		 691 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
692 int nr = sensor_attr->index;
693
1da177e4 694 struct it87_data *data = it87_update_device(dev);
5f2dc798
JD		 695 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
696 DIV_FROM_REG(data->fan_div[nr])));
1da177e4 697}
20ad93d4
JD		 698static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
699 char *buf)
1da177e4 700{
20ad93d4
JD		 701 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
702 int nr = sensor_attr->index;
703
1da177e4
LT		 704 struct it87_data *data = it87_update_device(dev);
705 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
706}
5f2dc798
JD		 707static ssize_t show_pwm_enable(struct device *dev,
708 struct device_attribute *attr, char *buf)
1da177e4 709{
20ad93d4
JD		 710 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
711 int nr = sensor_attr->index;
712
1da177e4 713 struct it87_data *data = it87_update_device(dev);
b99883dc 714 return sprintf(buf, "%d\n", pwm_mode(data, nr));
1da177e4 715}
20ad93d4
JD		 716static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
717 char *buf)
1da177e4 718{
20ad93d4
JD		 719 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
720 int nr = sensor_attr->index;
721
1da177e4 722 struct it87_data *data = it87_update_device(dev);
44c1bcd4
JD		 723 return sprintf(buf, "%d\n",
724 pwm_from_reg(data, data->pwm_duty[nr]));
1da177e4 725}
f8d0c19a
JD		 726static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
727 char *buf)
728{
729 struct it87_data *data = it87_update_device(dev);
730 int index = (data->fan_ctl >> 4) & 0x07;
731
732 return sprintf(buf, "%u\n", pwm_freq[index]);
733}
20ad93d4
JD		 734static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
735 const char *buf, size_t count)
1da177e4 736{
20ad93d4
JD		 737 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
738 int nr = sensor_attr->index;
739
b74f3fdd 740 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 741 long val;
7f999aa7 742 u8 reg;
1da177e4 743
179c4fdb 744 if (kstrtol(buf, 10, &val) < 0)
f5f64501
JD		 745 return -EINVAL;
746
9a61bf63 747 mutex_lock(&data->update_lock);
b74f3fdd 748 reg = it87_read_value(data, IT87_REG_FAN_DIV);
07eab46d 749 switch (nr) {
5f2dc798
JD		 750 case 0:
751 data->fan_div[nr] = reg & 0x07;
752 break;
753 case 1:
754 data->fan_div[nr] = (reg >> 3) & 0x07;
755 break;
756 case 2:
757 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
758 break;
07eab46d
JD		 759 }
760
1da177e4 761 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 762 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
9a61bf63 763 mutex_unlock(&data->update_lock);
1da177e4
LT		 764 return count;
765}
20ad93d4
JD		 766static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
767 const char *buf, size_t count)
1da177e4 768{
20ad93d4
JD		 769 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
770 int nr = sensor_attr->index;
771
b74f3fdd 772 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 773 unsigned long val;
8ab4ec3e 774 int min;
1da177e4
LT		 775 u8 old;
776
179c4fdb 777 if (kstrtoul(buf, 10, &val) < 0)
f5f64501
JD		 778 return -EINVAL;
779
9a61bf63 780 mutex_lock(&data->update_lock);
b74f3fdd 781 old = it87_read_value(data, IT87_REG_FAN_DIV);
1da177e4 782
8ab4ec3e
JD		 783 /* Save fan min limit */
784 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
1da177e4
LT		 785
786 switch (nr) {
787 case 0:
788 case 1:
789 data->fan_div[nr] = DIV_TO_REG(val);
790 break;
791 case 2:
792 if (val < 8)
793 data->fan_div[nr] = 1;
794 else
795 data->fan_div[nr] = 3;
796 }
797 val = old & 0x80;
798 val |= (data->fan_div[0] & 0x07);
799 val |= (data->fan_div[1] & 0x07) << 3;
800 if (data->fan_div[2] == 3)
801 val |= 0x1 << 6;
b74f3fdd 802 it87_write_value(data, IT87_REG_FAN_DIV, val);
1da177e4 803
8ab4ec3e
JD		 804 /* Restore fan min limit */
805 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
c7f1f716 806 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
8ab4ec3e 807
9a61bf63 808 mutex_unlock(&data->update_lock);
1da177e4
LT		 809 return count;
810}
cccfc9c4
JD		 811
812/* Returns 0 if OK, -EINVAL otherwise */
813static int check_trip_points(struct device *dev, int nr)
814{
815 const struct it87_data *data = dev_get_drvdata(dev);
816 int i, err = 0;
817
818 if (has_old_autopwm(data)) {
819 for (i = 0; i < 3; i++) {
820 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
821 err = -EINVAL;
822 }
823 for (i = 0; i < 2; i++) {
824 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
825 err = -EINVAL;
826 }
827 }
828
829 if (err) {
830 dev_err(dev, "Inconsistent trip points, not switching to "
831 "automatic mode\n");
832 dev_err(dev, "Adjust the trip points and try again\n");
833 }
834 return err;
835}
836
20ad93d4
JD		 837static ssize_t set_pwm_enable(struct device *dev,
838 struct device_attribute *attr, const char *buf, size_t count)
1da177e4 839{
20ad93d4
JD		 840 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
841 int nr = sensor_attr->index;
842
b74f3fdd 843 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 844 long val;
1da177e4 845
179c4fdb 846 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
b99883dc
JD		 847 return -EINVAL;
848
cccfc9c4
JD		 849 /* Check trip points before switching to automatic mode */
850 if (val == 2) {
851 if (check_trip_points(dev, nr) < 0)
852 return -EINVAL;
853 }
854
9a61bf63 855 mutex_lock(&data->update_lock);
1da177e4
LT		 856
857 if (val == 0) {
858 int tmp;
859 /* make sure the fan is on when in on/off mode */
b74f3fdd 860 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
861 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
1da177e4
LT		 862 /* set on/off mode */
863 data->fan_main_ctrl &= ~(1 << nr);
5f2dc798
JD		 864 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
865 data->fan_main_ctrl);
b99883dc
JD		 866 } else {
867 if (val == 1) /* Manual mode */
16b5dda2 868 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
6229cdb2
JD		 869 data->pwm_temp_map[nr] :
870 data->pwm_duty[nr];
b99883dc
JD		 871 else /* Automatic mode */
872 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
873 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1da177e4
LT		 874 /* set SmartGuardian mode */
875 data->fan_main_ctrl |= (1 << nr);
5f2dc798
JD		 876 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
877 data->fan_main_ctrl);
1da177e4
LT		 878 }
879
9a61bf63 880 mutex_unlock(&data->update_lock);
1da177e4
LT		 881 return count;
882}
20ad93d4
JD		 883static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
884 const char *buf, size_t count)
1da177e4 885{
20ad93d4
JD		 886 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
887 int nr = sensor_attr->index;
888
b74f3fdd 889 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 890 long val;
1da177e4 891
179c4fdb 892 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1da177e4
LT		 893 return -EINVAL;
894
9a61bf63 895 mutex_lock(&data->update_lock);
16b5dda2 896 if (has_newer_autopwm(data)) {
6229cdb2
JD		 897 /* If we are in automatic mode, the PWM duty cycle register
898 * is read-only so we can't write the value */
899 if (data->pwm_ctrl[nr] & 0x80) {
900 mutex_unlock(&data->update_lock);
901 return -EBUSY;
902 }
903 data->pwm_duty[nr] = pwm_to_reg(data, val);
904 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
905 data->pwm_duty[nr]);
906 } else {
907 data->pwm_duty[nr] = pwm_to_reg(data, val);
908 /* If we are in manual mode, write the duty cycle immediately;
909 * otherwise, just store it for later use. */
910 if (!(data->pwm_ctrl[nr] & 0x80)) {
911 data->pwm_ctrl[nr] = data->pwm_duty[nr];
912 it87_write_value(data, IT87_REG_PWM(nr),
913 data->pwm_ctrl[nr]);
914 }
b99883dc 915 }
9a61bf63 916 mutex_unlock(&data->update_lock);
1da177e4
LT		 917 return count;
918}
f8d0c19a
JD		 919static ssize_t set_pwm_freq(struct device *dev,
920 struct device_attribute *attr, const char *buf, size_t count)
921{
b74f3fdd 922 struct it87_data *data = dev_get_drvdata(dev);
f5f64501 923 unsigned long val;
f8d0c19a
JD		 924 int i;
925
179c4fdb 926 if (kstrtoul(buf, 10, &val) < 0)
f5f64501
JD		 927 return -EINVAL;
928
f8d0c19a
JD		 929 /* Search for the nearest available frequency */
930 for (i = 0; i < 7; i++) {
931 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
932 break;
933 }
934
935 mutex_lock(&data->update_lock);
b74f3fdd 936 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
f8d0c19a 937 data->fan_ctl |= i << 4;
b74f3fdd 938 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
f8d0c19a
JD		 939 mutex_unlock(&data->update_lock);
940
941 return count;
942}
94ac7ee6
JD		 943static ssize_t show_pwm_temp_map(struct device *dev,
944 struct device_attribute *attr, char *buf)
945{
946 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
947 int nr = sensor_attr->index;
948
949 struct it87_data *data = it87_update_device(dev);
950 int map;
951
952 if (data->pwm_temp_map[nr] < 3)
953 map = 1 << data->pwm_temp_map[nr];
954 else
955 map = 0; /* Should never happen */
956 return sprintf(buf, "%d\n", map);
957}
958static ssize_t set_pwm_temp_map(struct device *dev,
959 struct device_attribute *attr, const char *buf, size_t count)
960{
961 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
962 int nr = sensor_attr->index;
963
964 struct it87_data *data = dev_get_drvdata(dev);
965 long val;
966 u8 reg;
967
4f3f51bc
JD		 968 /* This check can go away if we ever support automatic fan speed
969 control on newer chips. */
970 if (!has_old_autopwm(data)) {
971 dev_notice(dev, "Mapping change disabled for safety reasons\n");
972 return -EINVAL;
973 }
974
179c4fdb 975 if (kstrtol(buf, 10, &val) < 0)
94ac7ee6
JD		 976 return -EINVAL;
977
978 switch (val) {
979 case (1 << 0):
980 reg = 0x00;
981 break;
982 case (1 << 1):
983 reg = 0x01;
984 break;
985 case (1 << 2):
986 reg = 0x02;
987 break;
988 default:
989 return -EINVAL;
990 }
991
992 mutex_lock(&data->update_lock);
993 data->pwm_temp_map[nr] = reg;
994 /* If we are in automatic mode, write the temp mapping immediately;
995 * otherwise, just store it for later use. */
996 if (data->pwm_ctrl[nr] & 0x80) {
997 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
998 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
999 }
1000 mutex_unlock(&data->update_lock);
1001 return count;
1002}
1da177e4 1003
4f3f51bc
JD		 1004static ssize_t show_auto_pwm(struct device *dev,
1005 struct device_attribute *attr, char *buf)
1006{
1007 struct it87_data *data = it87_update_device(dev);
1008 struct sensor_device_attribute_2 *sensor_attr =
1009 to_sensor_dev_attr_2(attr);
1010 int nr = sensor_attr->nr;
1011 int point = sensor_attr->index;
1012
44c1bcd4
JD		 1013 return sprintf(buf, "%d\n",
1014 pwm_from_reg(data, data->auto_pwm[nr][point]));
4f3f51bc
JD		 1015}
1016
1017static ssize_t set_auto_pwm(struct device *dev,
1018 struct device_attribute *attr, const char *buf, size_t count)
1019{
1020 struct it87_data *data = dev_get_drvdata(dev);
1021 struct sensor_device_attribute_2 *sensor_attr =
1022 to_sensor_dev_attr_2(attr);
1023 int nr = sensor_attr->nr;
1024 int point = sensor_attr->index;
1025 long val;
1026
179c4fdb 1027 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
4f3f51bc
JD		 1028 return -EINVAL;
1029
1030 mutex_lock(&data->update_lock);
44c1bcd4 1031 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
4f3f51bc
JD		 1032 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1033 data->auto_pwm[nr][point]);
1034 mutex_unlock(&data->update_lock);
1035 return count;
1036}
1037
1038static ssize_t show_auto_temp(struct device *dev,
1039 struct device_attribute *attr, char *buf)
1040{
1041 struct it87_data *data = it87_update_device(dev);
1042 struct sensor_device_attribute_2 *sensor_attr =
1043 to_sensor_dev_attr_2(attr);
1044 int nr = sensor_attr->nr;
1045 int point = sensor_attr->index;
1046
1047 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1048}
1049
1050static ssize_t set_auto_temp(struct device *dev,
1051 struct device_attribute *attr, const char *buf, size_t count)
1052{
1053 struct it87_data *data = dev_get_drvdata(dev);
1054 struct sensor_device_attribute_2 *sensor_attr =
1055 to_sensor_dev_attr_2(attr);
1056 int nr = sensor_attr->nr;
1057 int point = sensor_attr->index;
1058 long val;
1059
179c4fdb 1060 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
4f3f51bc
JD		 1061 return -EINVAL;
1062
1063 mutex_lock(&data->update_lock);
1064 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1065 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1066 data->auto_temp[nr][point]);
1067 mutex_unlock(&data->update_lock);
1068 return count;
1069}
1070
20ad93d4
JD		 1071#define show_fan_offset(offset) \
1072static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
1073 show_fan, NULL, offset - 1); \
1074static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1075 show_fan_min, set_fan_min, offset - 1); \
1076static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
1077 show_fan_div, set_fan_div, offset - 1);
1da177e4
LT		 1078
1079show_fan_offset(1);
1080show_fan_offset(2);
1081show_fan_offset(3);
1082
1083#define show_pwm_offset(offset) \
20ad93d4
JD		 1084static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
1085 show_pwm_enable, set_pwm_enable, offset - 1); \
1086static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
f8d0c19a
JD		 1087 show_pwm, set_pwm, offset - 1); \
1088static DEVICE_ATTR(pwm##offset##_freq, \
1089 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
94ac7ee6
JD		 1090 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
1091static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
4f3f51bc
JD		 1092 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
1093 offset - 1); \
1094static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
1095 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1096 offset - 1, 0); \
1097static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
1098 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1099 offset - 1, 1); \
1100static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
1101 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
1102 offset - 1, 2); \
1103static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
1104 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
1105static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
1106 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1107 offset - 1, 1); \
1108static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
1109 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1110 offset - 1, 0); \
1111static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
1112 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1113 offset - 1, 2); \
1114static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
1115 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1116 offset - 1, 3); \
1117static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
1118 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
1119 offset - 1, 4);
1da177e4
LT		 1120
1121show_pwm_offset(1);
1122show_pwm_offset(2);
1123show_pwm_offset(3);
1124
17d648bf
JD		 1125/* A different set of callbacks for 16-bit fans */
1126static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
1127 char *buf)
1128{
1129 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1130 int nr = sensor_attr->index;
1131 struct it87_data *data = it87_update_device(dev);
1132 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
1133}
1134
1135static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
1136 char *buf)
1137{
1138 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1139 int nr = sensor_attr->index;
1140 struct it87_data *data = it87_update_device(dev);
1141 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
1142}
1143
1144static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
1145 const char *buf, size_t count)
1146{
1147 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1148 int nr = sensor_attr->index;
b74f3fdd 1149 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1150 long val;
1151
179c4fdb 1152 if (kstrtol(buf, 10, &val) < 0)
f5f64501 1153 return -EINVAL;
17d648bf
JD		 1154
1155 mutex_lock(&data->update_lock);
1156 data->fan_min[nr] = FAN16_TO_REG(val);
c7f1f716 1157 it87_write_value(data, IT87_REG_FAN_MIN[nr],
17d648bf 1158 data->fan_min[nr] & 0xff);
c7f1f716 1159 it87_write_value(data, IT87_REG_FANX_MIN[nr],
17d648bf
JD		 1160 data->fan_min[nr] >> 8);
1161 mutex_unlock(&data->update_lock);
1162 return count;
1163}
1164
1165/* We want to use the same sysfs file names as 8-bit fans, but we need
1166 different variable names, so we have to use SENSOR_ATTR instead of
1167 SENSOR_DEVICE_ATTR. */
1168#define show_fan16_offset(offset) \
1169static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
1170 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
1171 show_fan16, NULL, offset - 1); \
1172static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
1173 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
1174 show_fan16_min, set_fan16_min, offset - 1)
1175
1176show_fan16_offset(1);
1177show_fan16_offset(2);
1178show_fan16_offset(3);
c7f1f716
JD		 1179show_fan16_offset(4);
1180show_fan16_offset(5);
17d648bf 1181
1da177e4 1182/* Alarms */
5f2dc798
JD		 1183static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1184 char *buf)
1da177e4
LT		 1185{
1186 struct it87_data *data = it87_update_device(dev);
68188ba7 1187 return sprintf(buf, "%u\n", data->alarms);
1da177e4 1188}
1d66c64c 1189static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1da177e4 1190
0124dd78
JD		 1191static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1192 char *buf)
1193{
1194 int bitnr = to_sensor_dev_attr(attr)->index;
1195 struct it87_data *data = it87_update_device(dev);
1196 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1197}
3d30f9e6
JD		 1198
1199static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1200 *attr, const char *buf, size_t count)
1201{
1202 struct it87_data *data = dev_get_drvdata(dev);
1203 long val;
1204 int config;
1205
179c4fdb 1206 if (kstrtol(buf, 10, &val) < 0 || val != 0)
3d30f9e6
JD		 1207 return -EINVAL;
1208
1209 mutex_lock(&data->update_lock);
1210 config = it87_read_value(data, IT87_REG_CONFIG);
1211 if (config < 0) {
1212 count = config;
1213 } else {
1214 config |= 1 << 5;
1215 it87_write_value(data, IT87_REG_CONFIG, config);
1216 /* Invalidate cache to force re-read */
1217 data->valid = 0;
1218 }
1219 mutex_unlock(&data->update_lock);
1220
1221 return count;
1222}
1223
0124dd78
JD		 1224static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1225static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1226static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1227static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1228static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1229static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1230static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1231static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1232static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1233static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1234static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1235static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1236static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1237static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1238static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1239static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
3d30f9e6
JD		 1240static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1241 show_alarm, clear_intrusion, 4);
0124dd78 1242
d9b327c3
JD		 1243static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1244 char *buf)
1245{
1246 int bitnr = to_sensor_dev_attr(attr)->index;
1247 struct it87_data *data = it87_update_device(dev);
1248 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1249}
1250static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1251 const char *buf, size_t count)
1252{
1253 int bitnr = to_sensor_dev_attr(attr)->index;
1254 struct it87_data *data = dev_get_drvdata(dev);
1255 long val;
1256
179c4fdb 1257 if (kstrtol(buf, 10, &val) < 0
d9b327c3
JD		 1258 || (val != 0 && val != 1))
1259 return -EINVAL;
1260
1261 mutex_lock(&data->update_lock);
1262 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1263 if (val)
1264 data->beeps |= (1 << bitnr);
1265 else
1266 data->beeps &= ~(1 << bitnr);
1267 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1268 mutex_unlock(&data->update_lock);
1269 return count;
1270}
1271
1272static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1273 show_beep, set_beep, 1);
1274static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1275static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1276static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1277static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1278static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1279static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1280static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1281/* fanX_beep writability is set later */
1282static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1283static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1284static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1285static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1286static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1287static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1288 show_beep, set_beep, 2);
1289static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1290static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1291
5f2dc798
JD		 1292static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1293 char *buf)
1da177e4 1294{
90d6619a 1295 struct it87_data *data = dev_get_drvdata(dev);
a7be58a1 1296 return sprintf(buf, "%u\n", data->vrm);
1da177e4 1297}
5f2dc798
JD		 1298static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1299 const char *buf, size_t count)
1da177e4 1300{
b74f3fdd 1301 struct it87_data *data = dev_get_drvdata(dev);
f5f64501
JD		 1302 unsigned long val;
1303
179c4fdb 1304 if (kstrtoul(buf, 10, &val) < 0)
f5f64501 1305 return -EINVAL;
1da177e4 1306
1da177e4
LT		 1307 data->vrm = val;
1308
1309 return count;
1310}
1311static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1da177e4 1312
5f2dc798
JD		 1313static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1314 char *buf)
1da177e4
LT		 1315{
1316 struct it87_data *data = it87_update_device(dev);
1317 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1318}
1319static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
87808be4 1320
738e5e05
JD		 1321static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1322 char *buf)
1323{
1324 static const char *labels[] = {
1325 "+5V",
1326 "5VSB",
1327 "Vbat",
1328 };
44c1bcd4
JD		 1329 static const char *labels_it8721[] = {
1330 "+3.3V",
1331 "3VSB",
1332 "Vbat",
1333 };
1334 struct it87_data *data = dev_get_drvdata(dev);
738e5e05
JD		 1335 int nr = to_sensor_dev_attr(attr)->index;
1336
16b5dda2
JD		 1337 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1338 : labels[nr]);
738e5e05
JD		 1339}
1340static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1341static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1342static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1343
b74f3fdd 1344static ssize_t show_name(struct device *dev, struct device_attribute
1345 *devattr, char *buf)
1346{
1347 struct it87_data *data = dev_get_drvdata(dev);
1348 return sprintf(buf, "%s\n", data->name);
1349}
1350static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1351
87808be4
JD		 1352static struct attribute *it87_attributes[] = {
1353 &sensor_dev_attr_in0_input.dev_attr.attr,
1354 &sensor_dev_attr_in1_input.dev_attr.attr,
1355 &sensor_dev_attr_in2_input.dev_attr.attr,
1356 &sensor_dev_attr_in3_input.dev_attr.attr,
1357 &sensor_dev_attr_in4_input.dev_attr.attr,
1358 &sensor_dev_attr_in5_input.dev_attr.attr,
1359 &sensor_dev_attr_in6_input.dev_attr.attr,
1360 &sensor_dev_attr_in7_input.dev_attr.attr,
1361 &sensor_dev_attr_in8_input.dev_attr.attr,
1362 &sensor_dev_attr_in0_min.dev_attr.attr,
1363 &sensor_dev_attr_in1_min.dev_attr.attr,
1364 &sensor_dev_attr_in2_min.dev_attr.attr,
1365 &sensor_dev_attr_in3_min.dev_attr.attr,
1366 &sensor_dev_attr_in4_min.dev_attr.attr,
1367 &sensor_dev_attr_in5_min.dev_attr.attr,
1368 &sensor_dev_attr_in6_min.dev_attr.attr,
1369 &sensor_dev_attr_in7_min.dev_attr.attr,
1370 &sensor_dev_attr_in0_max.dev_attr.attr,
1371 &sensor_dev_attr_in1_max.dev_attr.attr,
1372 &sensor_dev_attr_in2_max.dev_attr.attr,
1373 &sensor_dev_attr_in3_max.dev_attr.attr,
1374 &sensor_dev_attr_in4_max.dev_attr.attr,
1375 &sensor_dev_attr_in5_max.dev_attr.attr,
1376 &sensor_dev_attr_in6_max.dev_attr.attr,
1377 &sensor_dev_attr_in7_max.dev_attr.attr,
0124dd78
JD		 1378 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1379 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1380 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1381 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1382 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1383 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1384 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1385 &sensor_dev_attr_in7_alarm.dev_attr.attr,
87808be4
JD		 1386
1387 &sensor_dev_attr_temp1_input.dev_attr.attr,
1388 &sensor_dev_attr_temp2_input.dev_attr.attr,
1389 &sensor_dev_attr_temp3_input.dev_attr.attr,
1390 &sensor_dev_attr_temp1_max.dev_attr.attr,
1391 &sensor_dev_attr_temp2_max.dev_attr.attr,
1392 &sensor_dev_attr_temp3_max.dev_attr.attr,
1393 &sensor_dev_attr_temp1_min.dev_attr.attr,
1394 &sensor_dev_attr_temp2_min.dev_attr.attr,
1395 &sensor_dev_attr_temp3_min.dev_attr.attr,
1396 &sensor_dev_attr_temp1_type.dev_attr.attr,
1397 &sensor_dev_attr_temp2_type.dev_attr.attr,
1398 &sensor_dev_attr_temp3_type.dev_attr.attr,
0124dd78
JD		 1399 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1400 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1401 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
87808be4
JD		 1402
1403 &dev_attr_alarms.attr,
3d30f9e6 1404 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
b74f3fdd 1405 &dev_attr_name.attr,
87808be4
JD		 1406 NULL
1407};
1408
1409static const struct attribute_group it87_group = {
1410 .attrs = it87_attributes,
1411};
1412
d9b327c3
JD		 1413static struct attribute *it87_attributes_beep[] = {
1414 &sensor_dev_attr_in0_beep.dev_attr.attr,
1415 &sensor_dev_attr_in1_beep.dev_attr.attr,
1416 &sensor_dev_attr_in2_beep.dev_attr.attr,
1417 &sensor_dev_attr_in3_beep.dev_attr.attr,
1418 &sensor_dev_attr_in4_beep.dev_attr.attr,
1419 &sensor_dev_attr_in5_beep.dev_attr.attr,
1420 &sensor_dev_attr_in6_beep.dev_attr.attr,
1421 &sensor_dev_attr_in7_beep.dev_attr.attr,
1422
1423 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1424 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1425 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1426 NULL
1427};
1428
1429static const struct attribute_group it87_group_beep = {
1430 .attrs = it87_attributes_beep,
1431};
1432
723a0aa0 1433static struct attribute *it87_attributes_fan16[5][3+1] = { {
87808be4
JD		 1434 &sensor_dev_attr_fan1_input16.dev_attr.attr,
1435 &sensor_dev_attr_fan1_min16.dev_attr.attr,
723a0aa0
JD		 1436 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1437 NULL
1438}, {
87808be4
JD		 1439 &sensor_dev_attr_fan2_input16.dev_attr.attr,
1440 &sensor_dev_attr_fan2_min16.dev_attr.attr,
723a0aa0
JD		 1441 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1442 NULL
1443}, {
87808be4
JD		 1444 &sensor_dev_attr_fan3_input16.dev_attr.attr,
1445 &sensor_dev_attr_fan3_min16.dev_attr.attr,
723a0aa0
JD		 1446 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1447 NULL
1448}, {
c7f1f716
JD		 1449 &sensor_dev_attr_fan4_input16.dev_attr.attr,
1450 &sensor_dev_attr_fan4_min16.dev_attr.attr,
723a0aa0
JD		 1451 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1452 NULL
1453}, {
c7f1f716
JD		 1454 &sensor_dev_attr_fan5_input16.dev_attr.attr,
1455 &sensor_dev_attr_fan5_min16.dev_attr.attr,
723a0aa0
JD		 1456 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1457 NULL
1458} };
1459
1460static const struct attribute_group it87_group_fan16[5] = {
1461 { .attrs = it87_attributes_fan16[0] },
1462 { .attrs = it87_attributes_fan16[1] },
1463 { .attrs = it87_attributes_fan16[2] },
1464 { .attrs = it87_attributes_fan16[3] },
1465 { .attrs = it87_attributes_fan16[4] },
1466};
87808be4 1467
723a0aa0 1468static struct attribute *it87_attributes_fan[3][4+1] = { {
87808be4
JD		 1469 &sensor_dev_attr_fan1_input.dev_attr.attr,
1470 &sensor_dev_attr_fan1_min.dev_attr.attr,
1471 &sensor_dev_attr_fan1_div.dev_attr.attr,
723a0aa0
JD		 1472 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1473 NULL
1474}, {
87808be4
JD		 1475 &sensor_dev_attr_fan2_input.dev_attr.attr,
1476 &sensor_dev_attr_fan2_min.dev_attr.attr,
1477 &sensor_dev_attr_fan2_div.dev_attr.attr,
723a0aa0
JD		 1478 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1479 NULL
1480}, {
87808be4
JD		 1481 &sensor_dev_attr_fan3_input.dev_attr.attr,
1482 &sensor_dev_attr_fan3_min.dev_attr.attr,
1483 &sensor_dev_attr_fan3_div.dev_attr.attr,
0124dd78 1484 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
723a0aa0
JD		 1485 NULL
1486} };
1487
1488static const struct attribute_group it87_group_fan[3] = {
1489 { .attrs = it87_attributes_fan[0] },
1490 { .attrs = it87_attributes_fan[1] },
1491 { .attrs = it87_attributes_fan[2] },
1492};
1493
1494static const struct attribute_group *
1495it87_get_fan_group(const struct it87_data *data)
1496{
1497 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan;
1498}
0124dd78 1499
723a0aa0 1500static struct attribute *it87_attributes_pwm[3][4+1] = { {
87808be4 1501 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
87808be4 1502 &sensor_dev_attr_pwm1.dev_attr.attr,
d5b0b5d6 1503 &dev_attr_pwm1_freq.attr,
94ac7ee6 1504 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1505 NULL
1506}, {
1507 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1508 &sensor_dev_attr_pwm2.dev_attr.attr,
1509 &dev_attr_pwm2_freq.attr,
94ac7ee6 1510 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1511 NULL
1512}, {
1513 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1514 &sensor_dev_attr_pwm3.dev_attr.attr,
1515 &dev_attr_pwm3_freq.attr,
94ac7ee6 1516 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
723a0aa0
JD		 1517 NULL
1518} };
87808be4 1519
723a0aa0
JD		 1520static const struct attribute_group it87_group_pwm[3] = {
1521 { .attrs = it87_attributes_pwm[0] },
1522 { .attrs = it87_attributes_pwm[1] },
1523 { .attrs = it87_attributes_pwm[2] },
1524};
1525
4f3f51bc
JD		 1526static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1527 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1528 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1529 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1530 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1531 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1532 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1533 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1534 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1535 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1536 NULL
1537}, {
1538 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1539 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1540 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1541 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1542 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1543 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1544 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1545 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1546 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1547 NULL
1548}, {
1549 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1550 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1551 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1552 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1553 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1554 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1555 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1556 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1557 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1558 NULL
1559} };
1560
1561static const struct attribute_group it87_group_autopwm[3] = {
1562 { .attrs = it87_attributes_autopwm[0] },
1563 { .attrs = it87_attributes_autopwm[1] },
1564 { .attrs = it87_attributes_autopwm[2] },
1565};
1566
d9b327c3
JD		 1567static struct attribute *it87_attributes_fan_beep[] = {
1568 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1569 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1570 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1571 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1572 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1573};
1574
6a8d7acf 1575static struct attribute *it87_attributes_vid[] = {
87808be4
JD		 1576 &dev_attr_vrm.attr,
1577 &dev_attr_cpu0_vid.attr,
1578 NULL
1579};
1580
6a8d7acf
JD		 1581static const struct attribute_group it87_group_vid = {
1582 .attrs = it87_attributes_vid,
87808be4 1583};
1da177e4 1584
738e5e05
JD		 1585static struct attribute *it87_attributes_label[] = {
1586 &sensor_dev_attr_in3_label.dev_attr.attr,
1587 &sensor_dev_attr_in7_label.dev_attr.attr,
1588 &sensor_dev_attr_in8_label.dev_attr.attr,
1589 NULL
1590};
1591
1592static const struct attribute_group it87_group_label = {
fa8b6975 1593 .attrs = it87_attributes_label,
738e5e05
JD		 1594};
1595
2d8672c5 1596/* SuperIO detection - will change isa_address if a chip is found */
b74f3fdd 1597static int __init it87_find(unsigned short *address,
1598 struct it87_sio_data *sio_data)
1da177e4 1599{
5b0380c9 1600 int err;
b74f3fdd 1601 u16 chip_type;
98dd22c3 1602 const char *board_vendor, *board_name;
1da177e4 1603
5b0380c9
NG		 1604 err = superio_enter();
1605 if (err)
1606 return err;
1607
1608 err = -ENODEV;
67b671bc 1609 chip_type = force_id ? force_id : superio_inw(DEVID);
b74f3fdd 1610
1611 switch (chip_type) {
1612 case IT8705F_DEVID:
1613 sio_data->type = it87;
1614 break;
1615 case IT8712F_DEVID:
1616 sio_data->type = it8712;
1617 break;
1618 case IT8716F_DEVID:
1619 case IT8726F_DEVID:
1620 sio_data->type = it8716;
1621 break;
1622 case IT8718F_DEVID:
1623 sio_data->type = it8718;
1624 break;
b4da93e4
JMS		 1625 case IT8720F_DEVID:
1626 sio_data->type = it8720;
1627 break;
44c1bcd4
JD		 1628 case IT8721F_DEVID:
1629 sio_data->type = it8721;
1630 break;
16b5dda2
JD		 1631 case IT8728F_DEVID:
1632 sio_data->type = it8728;
1633 break;
b74f3fdd 1634 case 0xffff: /* No device at all */
1635 goto exit;
1636 default:
a8ca1037 1637 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
b74f3fdd 1638 goto exit;
1639 }
1da177e4 1640
87673dd7 1641 superio_select(PME);
1da177e4 1642 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
a8ca1037 1643 pr_info("Device not activated, skipping\n");
1da177e4
LT		 1644 goto exit;
1645 }
1646
1647 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1648 if (*address == 0) {
a8ca1037 1649 pr_info("Base address not set, skipping\n");
1da177e4
LT		 1650 goto exit;
1651 }
1652
1653 err = 0;
0475169c 1654 sio_data->revision = superio_inb(DEVREV) & 0x0f;
a8ca1037 1655 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
0475169c 1656 chip_type, *address, sio_data->revision);
1da177e4 1657
738e5e05
JD		 1658 /* in8 (Vbat) is always internal */
1659 sio_data->internal = (1 << 2);
1660
87673dd7 1661 /* Read GPIO config and VID value from LDN 7 (GPIO) */
895ff267
JD		 1662 if (sio_data->type == it87) {
1663 /* The IT8705F doesn't have VID pins at all */
1664 sio_data->skip_vid = 1;
d9b327c3
JD		 1665
1666 /* The IT8705F has a different LD number for GPIO */
1667 superio_select(5);
1668 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
895ff267 1669 } else {
87673dd7
JD		 1670 int reg;
1671
1672 superio_select(GPIO);
44c1bcd4 1673
895ff267 1674 reg = superio_inb(IT87_SIO_GPIO3_REG);
16b5dda2
JD		 1675 if (sio_data->type == it8721 || sio_data->type == it8728) {
1676 /*
1677 * The IT8721F/IT8758E doesn't have VID pins at all,
1678 * not sure about the IT8728F.
1679 */
895ff267 1680 sio_data->skip_vid = 1;
44c1bcd4
JD		 1681 } else {
1682 /* We need at least 4 VID pins */
1683 if (reg & 0x0f) {
a8ca1037 1684 pr_info("VID is disabled (pins used for GPIO)\n");
44c1bcd4
JD		 1685 sio_data->skip_vid = 1;
1686 }
895ff267
JD		 1687 }
1688
591ec650
JD		 1689 /* Check if fan3 is there or not */
1690 if (reg & (1 << 6))
1691 sio_data->skip_pwm |= (1 << 2);
1692 if (reg & (1 << 7))
1693 sio_data->skip_fan |= (1 << 2);
1694
1695 /* Check if fan2 is there or not */
1696 reg = superio_inb(IT87_SIO_GPIO5_REG);
1697 if (reg & (1 << 1))
1698 sio_data->skip_pwm |= (1 << 1);
1699 if (reg & (1 << 2))
1700 sio_data->skip_fan |= (1 << 1);
1701
895ff267
JD		 1702 if ((sio_data->type == it8718 || sio_data->type == it8720)
1703 && !(sio_data->skip_vid))
b74f3fdd 1704 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
87673dd7
JD		 1705
1706 reg = superio_inb(IT87_SIO_PINX2_REG);
436cad2a
JD		 1707 /*
1708 * The IT8720F has no VIN7 pin, so VCCH should always be
1709 * routed internally to VIN7 with an internal divider.
1710 * Curiously, there still is a configuration bit to control
1711 * this, which means it can be set incorrectly. And even
1712 * more curiously, many boards out there are improperly
1713 * configured, even though the IT8720F datasheet claims
1714 * that the internal routing of VCCH to VIN7 is the default
1715 * setting. So we force the internal routing in this case.
1716 */
1717 if (sio_data->type == it8720 && !(reg & (1 << 1))) {
1718 reg |= (1 << 1);
1719 superio_outb(IT87_SIO_PINX2_REG, reg);
a8ca1037 1720 pr_notice("Routing internal VCCH to in7\n");
436cad2a 1721 }
87673dd7 1722 if (reg & (1 << 0))
738e5e05 1723 sio_data->internal |= (1 << 0);
16b5dda2
JD		 1724 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1725 sio_data->type == it8728)
738e5e05 1726 sio_data->internal |= (1 << 1);
d9b327c3
JD		 1727
1728 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
87673dd7 1729 }
d9b327c3 1730 if (sio_data->beep_pin)
a8ca1037 1731 pr_info("Beeping is supported\n");
87673dd7 1732
98dd22c3
JD		 1733 /* Disable specific features based on DMI strings */
1734 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1735 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1736 if (board_vendor && board_name) {
1737 if (strcmp(board_vendor, "nVIDIA") == 0
1738 && strcmp(board_name, "FN68PT") == 0) {
1739 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1740 connected to a fan, but to something else. One user
1741 has reported instant system power-off when changing
1742 the PWM2 duty cycle, so we disable it.
1743 I use the board name string as the trigger in case
1744 the same board is ever used in other systems. */
a8ca1037 1745 pr_info("Disabling pwm2 due to hardware constraints\n");
98dd22c3
JD		 1746 sio_data->skip_pwm = (1 << 1);
1747 }
1748 }
1749
1da177e4
LT		 1750exit:
1751 superio_exit();
1752 return err;
1753}
1754
723a0aa0
JD		 1755static void it87_remove_files(struct device *dev)
1756{
1757 struct it87_data *data = platform_get_drvdata(pdev);
1758 struct it87_sio_data *sio_data = dev->platform_data;
1759 const struct attribute_group *fan_group = it87_get_fan_group(data);
1760 int i;
1761
1762 sysfs_remove_group(&dev->kobj, &it87_group);
d9b327c3
JD		 1763 if (sio_data->beep_pin)
1764 sysfs_remove_group(&dev->kobj, &it87_group_beep);
723a0aa0
JD		 1765 for (i = 0; i < 5; i++) {
1766 if (!(data->has_fan & (1 << i)))
1767 continue;
1768 sysfs_remove_group(&dev->kobj, &fan_group[i]);
d9b327c3
JD		 1769 if (sio_data->beep_pin)
1770 sysfs_remove_file(&dev->kobj,
1771 it87_attributes_fan_beep[i]);
723a0aa0
JD		 1772 }
1773 for (i = 0; i < 3; i++) {
1774 if (sio_data->skip_pwm & (1 << 0))
1775 continue;
1776 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
4f3f51bc
JD		 1777 if (has_old_autopwm(data))
1778 sysfs_remove_group(&dev->kobj,
1779 &it87_group_autopwm[i]);
723a0aa0 1780 }
6a8d7acf
JD		 1781 if (!sio_data->skip_vid)
1782 sysfs_remove_group(&dev->kobj, &it87_group_vid);
738e5e05 1783 sysfs_remove_group(&dev->kobj, &it87_group_label);
723a0aa0
JD		 1784}
1785
b74f3fdd 1786static int __devinit it87_probe(struct platform_device *pdev)
1da177e4 1787{
1da177e4 1788 struct it87_data *data;
b74f3fdd 1789 struct resource *res;
1790 struct device *dev = &pdev->dev;
1791 struct it87_sio_data *sio_data = dev->platform_data;
723a0aa0
JD		 1792 const struct attribute_group *fan_group;
1793 int err = 0, i;
1da177e4 1794 int enable_pwm_interface;
d9b327c3 1795 int fan_beep_need_rw;
b74f3fdd 1796 static const char *names[] = {
1797 "it87",
1798 "it8712",
1799 "it8716",
1800 "it8718",
b4da93e4 1801 "it8720",
44c1bcd4 1802 "it8721",
16b5dda2 1803 "it8728",
b74f3fdd 1804 };
1805
1806 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
87b4b663 1807 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
b74f3fdd 1808 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1809 (unsigned long)res->start,
87b4b663 1810 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
8e9afcbb
JD		 1811 err = -EBUSY;
1812 goto ERROR0;
1813 }
1da177e4 1814
5f2dc798
JD		 1815 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
1816 if (!data) {
1da177e4
LT		 1817 err = -ENOMEM;
1818 goto ERROR1;
1819 }
1da177e4 1820
b74f3fdd 1821 data->addr = res->start;
1822 data->type = sio_data->type;
0475169c 1823 data->revision = sio_data->revision;
b74f3fdd 1824 data->name = names[sio_data->type];
1da177e4
LT		 1825
1826 /* Now, we do the remaining detection. */
b74f3fdd 1827 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1828 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
8e9afcbb
JD		 1829 err = -ENODEV;
1830 goto ERROR2;
1da177e4
LT		 1831 }
1832
b74f3fdd 1833 platform_set_drvdata(pdev, data);
1da177e4 1834
9a61bf63 1835 mutex_init(&data->update_lock);
1da177e4 1836
1da177e4 1837 /* Check PWM configuration */
b74f3fdd 1838 enable_pwm_interface = it87_check_pwm(dev);
1da177e4 1839
44c1bcd4 1840 /* Starting with IT8721F, we handle scaling of internal voltages */
16b5dda2 1841 if (has_12mv_adc(data)) {
44c1bcd4
JD		 1842 if (sio_data->internal & (1 << 0))
1843 data->in_scaled |= (1 << 3); /* in3 is AVCC */
1844 if (sio_data->internal & (1 << 1))
1845 data->in_scaled |= (1 << 7); /* in7 is VSB */
1846 if (sio_data->internal & (1 << 2))
1847 data->in_scaled |= (1 << 8); /* in8 is Vbat */
1848 }
1849
1da177e4 1850 /* Initialize the IT87 chip */
b74f3fdd 1851 it87_init_device(pdev);
1da177e4
LT		 1852
1853 /* Register sysfs hooks */
5f2dc798
JD		 1854 err = sysfs_create_group(&dev->kobj, &it87_group);
1855 if (err)
b74f3fdd 1856 goto ERROR2;
17d648bf 1857
d9b327c3
JD		 1858 if (sio_data->beep_pin) {
1859 err = sysfs_create_group(&dev->kobj, &it87_group_beep);
1860 if (err)
1861 goto ERROR4;
1862 }
1863
9060f8bd 1864 /* Do not create fan files for disabled fans */
723a0aa0 1865 fan_group = it87_get_fan_group(data);
d9b327c3 1866 fan_beep_need_rw = 1;
723a0aa0
JD		 1867 for (i = 0; i < 5; i++) {
1868 if (!(data->has_fan & (1 << i)))
1869 continue;
1870 err = sysfs_create_group(&dev->kobj, &fan_group[i]);
1871 if (err)
1872 goto ERROR4;
d9b327c3
JD		 1873
1874 if (sio_data->beep_pin) {
1875 err = sysfs_create_file(&dev->kobj,
1876 it87_attributes_fan_beep[i]);
1877 if (err)
1878 goto ERROR4;
1879 if (!fan_beep_need_rw)
1880 continue;
1881
1882 /* As we have a single beep enable bit for all fans,
1883 * only the first enabled fan has a writable attribute
1884 * for it. */
1885 if (sysfs_chmod_file(&dev->kobj,
1886 it87_attributes_fan_beep[i],
1887 S_IRUGO | S_IWUSR))
1888 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
1889 i + 1);
1890 fan_beep_need_rw = 0;
1891 }
17d648bf
JD		 1892 }
1893
1da177e4 1894 if (enable_pwm_interface) {
723a0aa0
JD		 1895 for (i = 0; i < 3; i++) {
1896 if (sio_data->skip_pwm & (1 << i))
1897 continue;
1898 err = sysfs_create_group(&dev->kobj,
1899 &it87_group_pwm[i]);
1900 if (err)
98dd22c3 1901 goto ERROR4;
4f3f51bc
JD		 1902
1903 if (!has_old_autopwm(data))
1904 continue;
1905 err = sysfs_create_group(&dev->kobj,
1906 &it87_group_autopwm[i]);
1907 if (err)
1908 goto ERROR4;
98dd22c3 1909 }
1da177e4
LT		 1910 }
1911
895ff267 1912 if (!sio_data->skip_vid) {
303760b4 1913 data->vrm = vid_which_vrm();
87673dd7 1914 /* VID reading from Super-I/O config space if available */
b74f3fdd 1915 data->vid = sio_data->vid_value;
6a8d7acf
JD		 1916 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
1917 if (err)
87808be4
JD		 1918 goto ERROR4;
1919 }
1920
738e5e05
JD		 1921 /* Export labels for internal sensors */
1922 for (i = 0; i < 3; i++) {
1923 if (!(sio_data->internal & (1 << i)))
1924 continue;
1925 err = sysfs_create_file(&dev->kobj,
1926 it87_attributes_label[i]);
1927 if (err)
1928 goto ERROR4;
1929 }
1930
1beeffe4
TJ		 1931 data->hwmon_dev = hwmon_device_register(dev);
1932 if (IS_ERR(data->hwmon_dev)) {
1933 err = PTR_ERR(data->hwmon_dev);
87808be4 1934 goto ERROR4;
1da177e4
LT		 1935 }
1936
1937 return 0;
1938
87808be4 1939ERROR4:
723a0aa0 1940 it87_remove_files(dev);
1da177e4 1941ERROR2:
b74f3fdd 1942 platform_set_drvdata(pdev, NULL);
1da177e4
LT		 1943 kfree(data);
1944ERROR1:
87b4b663 1945 release_region(res->start, IT87_EC_EXTENT);
1da177e4
LT		 1946ERROR0:
1947 return err;
1948}
1949
b74f3fdd 1950static int __devexit it87_remove(struct platform_device *pdev)
1da177e4 1951{
b74f3fdd 1952 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 1953
1beeffe4 1954 hwmon_device_unregister(data->hwmon_dev);
723a0aa0 1955 it87_remove_files(&pdev->dev);
943b0830 1956
87b4b663 1957 release_region(data->addr, IT87_EC_EXTENT);
b74f3fdd 1958 platform_set_drvdata(pdev, NULL);
943b0830 1959 kfree(data);
1da177e4
LT		 1960
1961 return 0;
1962}
1963
7f999aa7 1964/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1965 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1966 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1967static int it87_read_value(struct it87_data *data, u8 reg)
1da177e4 1968{
b74f3fdd 1969 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1970 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1971}
1972
7f999aa7 1973/* Must be called with data->update_lock held, except during initialization.
1da177e4
LT		 1974 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1975 would slow down the IT87 access and should not be necessary. */
b74f3fdd 1976static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
1da177e4 1977{
b74f3fdd 1978 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1979 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
1da177e4
LT		 1980}
1981
1982/* Return 1 if and only if the PWM interface is safe to use */
b74f3fdd 1983static int __devinit it87_check_pwm(struct device *dev)
1da177e4 1984{
b74f3fdd 1985 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1986 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1987 * and polarity set to active low is sign that this is the case so we
1988 * disable pwm control to protect the user. */
b74f3fdd 1989 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1da177e4
LT		 1990 if ((tmp & 0x87) == 0) {
1991 if (fix_pwm_polarity) {
1992 /* The user asks us to attempt a chip reconfiguration.
1993 * This means switching to active high polarity and
1994 * inverting all fan speed values. */
1995 int i;
1996 u8 pwm[3];
1997
1998 for (i = 0; i < 3; i++)
b74f3fdd 1999 pwm[i] = it87_read_value(data,
1da177e4
LT		 2000 IT87_REG_PWM(i));
2001
2002 /* If any fan is in automatic pwm mode, the polarity
2003 * might be correct, as suspicious as it seems, so we
2004 * better don't change anything (but still disable the
2005 * PWM interface). */
2006 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
b74f3fdd 2007 dev_info(dev, "Reconfiguring PWM to "
1da177e4 2008 "active high polarity\n");
b74f3fdd 2009 it87_write_value(data, IT87_REG_FAN_CTL,
1da177e4
LT		 2010 tmp | 0x87);
2011 for (i = 0; i < 3; i++)
b74f3fdd 2012 it87_write_value(data,
1da177e4
LT		 2013 IT87_REG_PWM(i),
2014 0x7f & ~pwm[i]);
2015 return 1;
2016 }
2017
b74f3fdd 2018 dev_info(dev, "PWM configuration is "
1da177e4
LT		 2019 "too broken to be fixed\n");
2020 }
2021
b74f3fdd 2022 dev_info(dev, "Detected broken BIOS "
1da177e4
LT		 2023 "defaults, disabling PWM interface\n");
2024 return 0;
2025 } else if (fix_pwm_polarity) {
b74f3fdd 2026 dev_info(dev, "PWM configuration looks "
1da177e4
LT		 2027 "sane, won't touch\n");
2028 }
2029
2030 return 1;
2031}
2032
2033/* Called when we have found a new IT87. */
b74f3fdd 2034static void __devinit it87_init_device(struct platform_device *pdev)
1da177e4 2035{
591ec650 2036 struct it87_sio_data *sio_data = pdev->dev.platform_data;
b74f3fdd 2037 struct it87_data *data = platform_get_drvdata(pdev);
1da177e4 2038 int tmp, i;
591ec650 2039 u8 mask;
1da177e4 2040
b99883dc
JD		 2041 /* For each PWM channel:
2042 * - If it is in automatic mode, setting to manual mode should set
2043 * the fan to full speed by default.
2044 * - If it is in manual mode, we need a mapping to temperature
2045 * channels to use when later setting to automatic mode later.
2046 * Use a 1:1 mapping by default (we are clueless.)
2047 * In both cases, the value can (and should) be changed by the user
6229cdb2
JD		 2048 * prior to switching to a different mode.
2049 * Note that this is no longer needed for the IT8721F and later, as
2050 * these have separate registers for the temperature mapping and the
2051 * manual duty cycle. */
1da177e4 2052 for (i = 0; i < 3; i++) {
b99883dc
JD		 2053 data->pwm_temp_map[i] = i;
2054 data->pwm_duty[i] = 0x7f; /* Full speed */
4f3f51bc 2055 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
1da177e4
LT		 2056 }
2057
c5df9b7a
JD		 2058 /* Some chips seem to have default value 0xff for all limit
2059 * registers. For low voltage limits it makes no sense and triggers
2060 * alarms, so change to 0 instead. For high temperature limits, it
2061 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2062 * but is still confusing, so change to 127 degrees C. */
2063 for (i = 0; i < 8; i++) {
b74f3fdd 2064 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
c5df9b7a 2065 if (tmp == 0xff)
b74f3fdd 2066 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
c5df9b7a
JD		 2067 }
2068 for (i = 0; i < 3; i++) {
b74f3fdd 2069 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
c5df9b7a 2070 if (tmp == 0xff)
b74f3fdd 2071 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
c5df9b7a
JD		 2072 }
2073
a00afb97
JD		 2074 /* Temperature channels are not forcibly enabled, as they can be
2075 * set to two different sensor types and we can't guess which one
2076 * is correct for a given system. These channels can be enabled at
2077 * run-time through the temp{1-3}_type sysfs accessors if needed. */
1da177e4
LT		 2078
2079 /* Check if voltage monitors are reset manually or by some reason */
b74f3fdd 2080 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
1da177e4
LT		 2081 if ((tmp & 0xff) == 0) {
2082 /* Enable all voltage monitors */
b74f3fdd 2083 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
1da177e4
LT		 2084 }
2085
2086 /* Check if tachometers are reset manually or by some reason */
591ec650 2087 mask = 0x70 & ~(sio_data->skip_fan << 4);
b74f3fdd 2088 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
591ec650 2089 if ((data->fan_main_ctrl & mask) == 0) {
1da177e4 2090 /* Enable all fan tachometers */
591ec650 2091 data->fan_main_ctrl |= mask;
5f2dc798
JD		 2092 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2093 data->fan_main_ctrl);
1da177e4 2094 }
9060f8bd 2095 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
1da177e4 2096
17d648bf 2097 /* Set tachometers to 16-bit mode if needed */
0475169c 2098 if (has_16bit_fans(data)) {
b74f3fdd 2099 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
9060f8bd 2100 if (~tmp & 0x07 & data->has_fan) {
b74f3fdd 2101 dev_dbg(&pdev->dev,
17d648bf 2102 "Setting fan1-3 to 16-bit mode\n");
b74f3fdd 2103 it87_write_value(data, IT87_REG_FAN_16BIT,
17d648bf
JD		 2104 tmp | 0x07);
2105 }
816d8c6a
AP		 2106 /* IT8705F only supports three fans. */
2107 if (data->type != it87) {
2108 if (tmp & (1 << 4))
2109 data->has_fan |= (1 << 3); /* fan4 enabled */
2110 if (tmp & (1 << 5))
2111 data->has_fan |= (1 << 4); /* fan5 enabled */
2112 }
17d648bf
JD		 2113 }
2114
591ec650
JD		 2115 /* Fan input pins may be used for alternative functions */
2116 data->has_fan &= ~sio_data->skip_fan;
2117
1da177e4 2118 /* Start monitoring */
b74f3fdd 2119 it87_write_value(data, IT87_REG_CONFIG,
2120 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
1da177e4
LT		 2121 | (update_vbat ? 0x41 : 0x01));
2122}
2123
b99883dc
JD		 2124static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2125{
2126 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
16b5dda2 2127 if (has_newer_autopwm(data)) {
b99883dc 2128 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
6229cdb2
JD		 2129 data->pwm_duty[nr] = it87_read_value(data,
2130 IT87_REG_PWM_DUTY(nr));
2131 } else {
2132 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2133 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2134 else /* Manual mode */
2135 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2136 }
4f3f51bc
JD		 2137
2138 if (has_old_autopwm(data)) {
2139 int i;
2140
2141 for (i = 0; i < 5 ; i++)
2142 data->auto_temp[nr][i] = it87_read_value(data,
2143 IT87_REG_AUTO_TEMP(nr, i));
2144 for (i = 0; i < 3 ; i++)
2145 data->auto_pwm[nr][i] = it87_read_value(data,
2146 IT87_REG_AUTO_PWM(nr, i));
2147 }
b99883dc
JD		 2148}
2149
1da177e4
LT		 2150static struct it87_data *it87_update_device(struct device *dev)
2151{
b74f3fdd 2152 struct it87_data *data = dev_get_drvdata(dev);
1da177e4
LT		 2153 int i;
2154
9a61bf63 2155 mutex_lock(&data->update_lock);
1da177e4
LT		 2156
2157 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2158 || !data->valid) {
1da177e4
LT		 2159 if (update_vbat) {
2160 /* Cleared after each update, so reenable. Value
5f2dc798 2161 returned by this read will be previous value */
b74f3fdd 2162 it87_write_value(data, IT87_REG_CONFIG,
5f2dc798 2163 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
1da177e4
LT		 2164 }
2165 for (i = 0; i <= 7; i++) {
2166 data->in[i] =
5f2dc798 2167 it87_read_value(data, IT87_REG_VIN(i));
1da177e4 2168 data->in_min[i] =
5f2dc798 2169 it87_read_value(data, IT87_REG_VIN_MIN(i));
1da177e4 2170 data->in_max[i] =
5f2dc798 2171 it87_read_value(data, IT87_REG_VIN_MAX(i));
1da177e4 2172 }
3543a53f 2173 /* in8 (battery) has no limit registers */
5f2dc798 2174 data->in[8] = it87_read_value(data, IT87_REG_VIN(8));
1da177e4 2175
c7f1f716 2176 for (i = 0; i < 5; i++) {
9060f8bd
JD		 2177 /* Skip disabled fans */
2178 if (!(data->has_fan & (1 << i)))
2179 continue;
2180
1da177e4 2181 data->fan_min[i] =
5f2dc798 2182 it87_read_value(data, IT87_REG_FAN_MIN[i]);
b74f3fdd 2183 data->fan[i] = it87_read_value(data,
c7f1f716 2184 IT87_REG_FAN[i]);
17d648bf 2185 /* Add high byte if in 16-bit mode */
0475169c 2186 if (has_16bit_fans(data)) {
b74f3fdd 2187 data->fan[i] |= it87_read_value(data,
c7f1f716 2188 IT87_REG_FANX[i]) << 8;
b74f3fdd 2189 data->fan_min[i] |= it87_read_value(data,
c7f1f716 2190 IT87_REG_FANX_MIN[i]) << 8;
17d648bf 2191 }
1da177e4
LT		 2192 }
2193 for (i = 0; i < 3; i++) {
2194 data->temp[i] =
5f2dc798 2195 it87_read_value(data, IT87_REG_TEMP(i));
1da177e4 2196 data->temp_high[i] =
5f2dc798 2197 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
1da177e4 2198 data->temp_low[i] =
5f2dc798 2199 it87_read_value(data, IT87_REG_TEMP_LOW(i));
1da177e4
LT		 2200 }
2201
17d648bf 2202 /* Newer chips don't have clock dividers */
0475169c 2203 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
b74f3fdd 2204 i = it87_read_value(data, IT87_REG_FAN_DIV);
17d648bf
JD		 2205 data->fan_div[0] = i & 0x07;
2206 data->fan_div[1] = (i >> 3) & 0x07;
2207 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2208 }
1da177e4
LT		 2209
2210 data->alarms =
b74f3fdd 2211 it87_read_value(data, IT87_REG_ALARM1) |
2212 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2213 (it87_read_value(data, IT87_REG_ALARM3) << 16);
d9b327c3 2214 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
b99883dc 2215
b74f3fdd 2216 data->fan_main_ctrl = it87_read_value(data,
2217 IT87_REG_FAN_MAIN_CTRL);
2218 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
b99883dc
JD		 2219 for (i = 0; i < 3; i++)
2220 it87_update_pwm_ctrl(data, i);
b74f3fdd 2221
2222 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
0475169c 2223 /* The 8705 does not have VID capability.
44c1bcd4 2224 The 8718 and later don't use IT87_REG_VID for the
b4da93e4 2225 same purpose. */
17d648bf 2226 if (data->type == it8712 || data->type == it8716) {
b74f3fdd 2227 data->vid = it87_read_value(data, IT87_REG_VID);
17d648bf
JD		 2228 /* The older IT8712F revisions had only 5 VID pins,
2229 but we assume it is always safe to read 6 bits. */
2230 data->vid &= 0x3f;
1da177e4
LT		 2231 }
2232 data->last_updated = jiffies;
2233 data->valid = 1;
2234 }
2235
9a61bf63 2236 mutex_unlock(&data->update_lock);
1da177e4
LT		 2237
2238 return data;
2239}
2240
b74f3fdd 2241static int __init it87_device_add(unsigned short address,
2242 const struct it87_sio_data *sio_data)
2243{
2244 struct resource res = {
87b4b663
BH		 2245 .start = address + IT87_EC_OFFSET,
2246 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
b74f3fdd 2247 .name = DRVNAME,
2248 .flags = IORESOURCE_IO,
2249 };
2250 int err;
2251
b9acb64a
JD		 2252 err = acpi_check_resource_conflict(&res);
2253 if (err)
2254 goto exit;
2255
b74f3fdd 2256 pdev = platform_device_alloc(DRVNAME, address);
2257 if (!pdev) {
2258 err = -ENOMEM;
a8ca1037 2259 pr_err("Device allocation failed\n");
b74f3fdd 2260 goto exit;
2261 }
2262
2263 err = platform_device_add_resources(pdev, &res, 1);
2264 if (err) {
a8ca1037 2265 pr_err("Device resource addition failed (%d)\n", err);
b74f3fdd 2266 goto exit_device_put;
2267 }
2268
2269 err = platform_device_add_data(pdev, sio_data,
2270 sizeof(struct it87_sio_data));
2271 if (err) {
a8ca1037 2272 pr_err("Platform data allocation failed\n");
b74f3fdd 2273 goto exit_device_put;
2274 }
2275
2276 err = platform_device_add(pdev);
2277 if (err) {
a8ca1037 2278 pr_err("Device addition failed (%d)\n", err);
b74f3fdd 2279 goto exit_device_put;
2280 }
2281
2282 return 0;
2283
2284exit_device_put:
2285 platform_device_put(pdev);
2286exit:
2287 return err;
2288}
2289
1da177e4
LT		 2290static int __init sm_it87_init(void)
2291{
b74f3fdd 2292 int err;
5f2dc798 2293 unsigned short isa_address = 0;
b74f3fdd 2294 struct it87_sio_data sio_data;
2295
98dd22c3 2296 memset(&sio_data, 0, sizeof(struct it87_sio_data));
b74f3fdd 2297 err = it87_find(&isa_address, &sio_data);
2298 if (err)
2299 return err;
2300 err = platform_driver_register(&it87_driver);
2301 if (err)
2302 return err;
fde09509 2303
b74f3fdd 2304 err = it87_device_add(isa_address, &sio_data);
5f2dc798 2305 if (err) {
b74f3fdd 2306 platform_driver_unregister(&it87_driver);
2307 return err;
2308 }
2309
2310 return 0;
1da177e4
LT		 2311}
2312
2313static void __exit sm_it87_exit(void)
2314{
b74f3fdd 2315 platform_device_unregister(pdev);
2316 platform_driver_unregister(&it87_driver);
1da177e4
LT		 2317}
2318
2319
f1d8e332 2320MODULE_AUTHOR("Chris Gauthron, "
b19367c6 2321 "Jean Delvare <khali@linux-fr.org>");
44c1bcd4 2322MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
1da177e4
LT		 2323module_param(update_vbat, bool, 0);
2324MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2325module_param(fix_pwm_polarity, bool, 0);
5f2dc798
JD		 2326MODULE_PARM_DESC(fix_pwm_polarity,
2327 "Force PWM polarity to active high (DANGEROUS)");
1da177e4
LT		 2328MODULE_LICENSE("GPL");
2329
2330module_init(sm_it87_init);
2331module_exit(sm_it87_exit);
Linux kernel - Deliverables
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