Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
[~shefty/rdma-dev.git] / drivers / hwmon / it87.c
1 /*
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  *            IT8721F  Super I/O chip w/LPC interface
19  *            IT8726F  Super I/O chip w/LPC interface
20  *            IT8728F  Super I/O chip w/LPC interface
21  *            IT8758E  Super I/O chip w/LPC interface
22  *            IT8771E  Super I/O chip w/LPC interface
23  *            IT8772E  Super I/O chip w/LPC interface
24  *            IT8782F  Super I/O chip w/LPC interface
25  *            IT8783E/F Super I/O chip w/LPC interface
26  *            Sis950   A clone of the IT8705F
27  *
28  *  Copyright (C) 2001 Chris Gauthron
29  *  Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
30  *
31  *  This program is free software; you can redistribute it and/or modify
32  *  it under the terms of the GNU General Public License as published by
33  *  the Free Software Foundation; either version 2 of the License, or
34  *  (at your option) any later version.
35  *
36  *  This program is distributed in the hope that it will be useful,
37  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
38  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
39  *  GNU General Public License for more details.
40  *
41  *  You should have received a copy of the GNU General Public License
42  *  along with this program; if not, write to the Free Software
43  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
44  */
45
46 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
47
48 #include <linux/module.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/jiffies.h>
52 #include <linux/platform_device.h>
53 #include <linux/hwmon.h>
54 #include <linux/hwmon-sysfs.h>
55 #include <linux/hwmon-vid.h>
56 #include <linux/err.h>
57 #include <linux/mutex.h>
58 #include <linux/sysfs.h>
59 #include <linux/string.h>
60 #include <linux/dmi.h>
61 #include <linux/acpi.h>
62 #include <linux/io.h>
63
64 #define DRVNAME "it87"
65
66 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
67              it8772, it8782, it8783 };
68
69 static unsigned short force_id;
70 module_param(force_id, ushort, 0);
71 MODULE_PARM_DESC(force_id, "Override the detected device ID");
72
73 static struct platform_device *pdev;
74
75 #define REG     0x2e    /* The register to read/write */
76 #define DEV     0x07    /* Register: Logical device select */
77 #define VAL     0x2f    /* The value to read/write */
78 #define PME     0x04    /* The device with the fan registers in it */
79
80 /* The device with the IT8718F/IT8720F VID value in it */
81 #define GPIO    0x07
82
83 #define DEVID   0x20    /* Register: Device ID */
84 #define DEVREV  0x22    /* Register: Device Revision */
85
86 static inline int superio_inb(int reg)
87 {
88         outb(reg, REG);
89         return inb(VAL);
90 }
91
92 static inline void superio_outb(int reg, int val)
93 {
94         outb(reg, REG);
95         outb(val, VAL);
96 }
97
98 static int superio_inw(int reg)
99 {
100         int val;
101         outb(reg++, REG);
102         val = inb(VAL) << 8;
103         outb(reg, REG);
104         val |= inb(VAL);
105         return val;
106 }
107
108 static inline void superio_select(int ldn)
109 {
110         outb(DEV, REG);
111         outb(ldn, VAL);
112 }
113
114 static inline int superio_enter(void)
115 {
116         /*
117          * Try to reserve REG and REG + 1 for exclusive access.
118          */
119         if (!request_muxed_region(REG, 2, DRVNAME))
120                 return -EBUSY;
121
122         outb(0x87, REG);
123         outb(0x01, REG);
124         outb(0x55, REG);
125         outb(0x55, REG);
126         return 0;
127 }
128
129 static inline void superio_exit(void)
130 {
131         outb(0x02, REG);
132         outb(0x02, VAL);
133         release_region(REG, 2);
134 }
135
136 /* Logical device 4 registers */
137 #define IT8712F_DEVID 0x8712
138 #define IT8705F_DEVID 0x8705
139 #define IT8716F_DEVID 0x8716
140 #define IT8718F_DEVID 0x8718
141 #define IT8720F_DEVID 0x8720
142 #define IT8721F_DEVID 0x8721
143 #define IT8726F_DEVID 0x8726
144 #define IT8728F_DEVID 0x8728
145 #define IT8771E_DEVID 0x8771
146 #define IT8772E_DEVID 0x8772
147 #define IT8782F_DEVID 0x8782
148 #define IT8783E_DEVID 0x8783
149 #define IT87_ACT_REG  0x30
150 #define IT87_BASE_REG 0x60
151
152 /* Logical device 7 registers (IT8712F and later) */
153 #define IT87_SIO_GPIO1_REG      0x25
154 #define IT87_SIO_GPIO3_REG      0x27
155 #define IT87_SIO_GPIO5_REG      0x29
156 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
157 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
158 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
159 #define IT87_SIO_VID_REG        0xfc    /* VID value */
160 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
161
162 /* Update battery voltage after every reading if true */
163 static bool update_vbat;
164
165 /* Not all BIOSes properly configure the PWM registers */
166 static bool fix_pwm_polarity;
167
168 /* Many IT87 constants specified below */
169
170 /* Length of ISA address segment */
171 #define IT87_EXTENT 8
172
173 /* Length of ISA address segment for Environmental Controller */
174 #define IT87_EC_EXTENT 2
175
176 /* Offset of EC registers from ISA base address */
177 #define IT87_EC_OFFSET 5
178
179 /* Where are the ISA address/data registers relative to the EC base address */
180 #define IT87_ADDR_REG_OFFSET 0
181 #define IT87_DATA_REG_OFFSET 1
182
183 /*----- The IT87 registers -----*/
184
185 #define IT87_REG_CONFIG        0x00
186
187 #define IT87_REG_ALARM1        0x01
188 #define IT87_REG_ALARM2        0x02
189 #define IT87_REG_ALARM3        0x03
190
191 /*
192  * The IT8718F and IT8720F have the VID value in a different register, in
193  * Super-I/O configuration space.
194  */
195 #define IT87_REG_VID           0x0a
196 /*
197  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
198  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
199  * mode.
200  */
201 #define IT87_REG_FAN_DIV       0x0b
202 #define IT87_REG_FAN_16BIT     0x0c
203
204 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
205
206 static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
207 static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86 };
208 static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
209 static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
210 static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
211
212 #define IT87_REG_FAN_MAIN_CTRL 0x13
213 #define IT87_REG_FAN_CTL       0x14
214 #define IT87_REG_PWM(nr)       (0x15 + (nr))
215 #define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
216
217 #define IT87_REG_VIN(nr)       (0x20 + (nr))
218 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
219
220 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
221 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
222 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
223 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
224
225 #define IT87_REG_VIN_ENABLE    0x50
226 #define IT87_REG_TEMP_ENABLE   0x51
227 #define IT87_REG_TEMP_EXTRA    0x55
228 #define IT87_REG_BEEP_ENABLE   0x5c
229
230 #define IT87_REG_CHIPID        0x58
231
232 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
233 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
234
235 struct it87_devices {
236         const char *name;
237         u16 features;
238         u8 peci_mask;
239         u8 old_peci_mask;
240 };
241
242 #define FEAT_12MV_ADC           (1 << 0)
243 #define FEAT_NEWER_AUTOPWM      (1 << 1)
244 #define FEAT_OLD_AUTOPWM        (1 << 2)
245 #define FEAT_16BIT_FANS         (1 << 3)
246 #define FEAT_TEMP_OFFSET        (1 << 4)
247 #define FEAT_TEMP_PECI          (1 << 5)
248 #define FEAT_TEMP_OLD_PECI      (1 << 6)
249
250 static const struct it87_devices it87_devices[] = {
251         [it87] = {
252                 .name = "it87",
253                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
254         },
255         [it8712] = {
256                 .name = "it8712",
257                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
258         },
259         [it8716] = {
260                 .name = "it8716",
261                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
262         },
263         [it8718] = {
264                 .name = "it8718",
265                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
266                   | FEAT_TEMP_OLD_PECI,
267                 .old_peci_mask = 0x4,
268         },
269         [it8720] = {
270                 .name = "it8720",
271                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
272                   | FEAT_TEMP_OLD_PECI,
273                 .old_peci_mask = 0x4,
274         },
275         [it8721] = {
276                 .name = "it8721",
277                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
278                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI,
279                 .peci_mask = 0x05,
280                 .old_peci_mask = 0x02,  /* Actually reports PCH */
281         },
282         [it8728] = {
283                 .name = "it8728",
284                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
285                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
286                 .peci_mask = 0x07,
287         },
288         [it8771] = {
289                 .name = "it8771",
290                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
291                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
292                                         /* PECI: guesswork */
293                                         /* 12mV ADC (OHM) */
294                                         /* 16 bit fans (OHM) */
295                 .peci_mask = 0x07,
296         },
297         [it8772] = {
298                 .name = "it8772",
299                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
300                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
301                                         /* PECI (coreboot) */
302                                         /* 12mV ADC (HWSensors4, OHM) */
303                                         /* 16 bit fans (HWSensors4, OHM) */
304                 .peci_mask = 0x07,
305         },
306         [it8782] = {
307                 .name = "it8782",
308                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
309                   | FEAT_TEMP_OLD_PECI,
310                 .old_peci_mask = 0x4,
311         },
312         [it8783] = {
313                 .name = "it8783",
314                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
315                   | FEAT_TEMP_OLD_PECI,
316                 .old_peci_mask = 0x4,
317         },
318 };
319
320 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
321 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
322 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
323 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
324 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
325 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
326                                  ((data)->peci_mask & (1 << nr)))
327 #define has_temp_old_peci(data, nr) \
328                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
329                                  ((data)->old_peci_mask & (1 << nr)))
330
331 struct it87_sio_data {
332         enum chips type;
333         /* Values read from Super-I/O config space */
334         u8 revision;
335         u8 vid_value;
336         u8 beep_pin;
337         u8 internal;    /* Internal sensors can be labeled */
338         /* Features skipped based on config or DMI */
339         u16 skip_in;
340         u8 skip_vid;
341         u8 skip_fan;
342         u8 skip_pwm;
343         u8 skip_temp;
344 };
345
346 /*
347  * For each registered chip, we need to keep some data in memory.
348  * The structure is dynamically allocated.
349  */
350 struct it87_data {
351         struct device *hwmon_dev;
352         enum chips type;
353         u16 features;
354         u8 peci_mask;
355         u8 old_peci_mask;
356
357         unsigned short addr;
358         const char *name;
359         struct mutex update_lock;
360         char valid;             /* !=0 if following fields are valid */
361         unsigned long last_updated;     /* In jiffies */
362
363         u16 in_scaled;          /* Internal voltage sensors are scaled */
364         u8 in[9][3];            /* [nr][0]=in, [1]=min, [2]=max */
365         u8 has_fan;             /* Bitfield, fans enabled */
366         u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
367         u8 has_temp;            /* Bitfield, temp sensors enabled */
368         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
369         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
370         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
371         u8 fan_div[3];          /* Register encoding, shifted right */
372         u8 vid;                 /* Register encoding, combined */
373         u8 vrm;
374         u32 alarms;             /* Register encoding, combined */
375         u8 beeps;               /* Register encoding */
376         u8 fan_main_ctrl;       /* Register value */
377         u8 fan_ctl;             /* Register value */
378
379         /*
380          * The following 3 arrays correspond to the same registers up to
381          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
382          * 7, and we want to preserve settings on mode changes, so we have
383          * to track all values separately.
384          * Starting with the IT8721F, the manual PWM duty cycles are stored
385          * in separate registers (8-bit values), so the separate tracking
386          * is no longer needed, but it is still done to keep the driver
387          * simple.
388          */
389         u8 pwm_ctrl[3];         /* Register value */
390         u8 pwm_duty[3];         /* Manual PWM value set by user */
391         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
392
393         /* Automatic fan speed control registers */
394         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
395         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
396 };
397
398 static int adc_lsb(const struct it87_data *data, int nr)
399 {
400         int lsb = has_12mv_adc(data) ? 12 : 16;
401         if (data->in_scaled & (1 << nr))
402                 lsb <<= 1;
403         return lsb;
404 }
405
406 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
407 {
408         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
409         return clamp_val(val, 0, 255);
410 }
411
412 static int in_from_reg(const struct it87_data *data, int nr, int val)
413 {
414         return val * adc_lsb(data, nr);
415 }
416
417 static inline u8 FAN_TO_REG(long rpm, int div)
418 {
419         if (rpm == 0)
420                 return 255;
421         rpm = clamp_val(rpm, 1, 1000000);
422         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
423 }
424
425 static inline u16 FAN16_TO_REG(long rpm)
426 {
427         if (rpm == 0)
428                 return 0xffff;
429         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
430 }
431
432 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
433                                 1350000 / ((val) * (div)))
434 /* The divider is fixed to 2 in 16-bit mode */
435 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
436                              1350000 / ((val) * 2))
437
438 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
439                                     ((val) + 500) / 1000), -128, 127))
440 #define TEMP_FROM_REG(val) ((val) * 1000)
441
442 static u8 pwm_to_reg(const struct it87_data *data, long val)
443 {
444         if (has_newer_autopwm(data))
445                 return val;
446         else
447                 return val >> 1;
448 }
449
450 static int pwm_from_reg(const struct it87_data *data, u8 reg)
451 {
452         if (has_newer_autopwm(data))
453                 return reg;
454         else
455                 return (reg & 0x7f) << 1;
456 }
457
458
459 static int DIV_TO_REG(int val)
460 {
461         int answer = 0;
462         while (answer < 7 && (val >>= 1))
463                 answer++;
464         return answer;
465 }
466 #define DIV_FROM_REG(val) (1 << (val))
467
468 static const unsigned int pwm_freq[8] = {
469         48000000 / 128,
470         24000000 / 128,
471         12000000 / 128,
472         8000000 / 128,
473         6000000 / 128,
474         3000000 / 128,
475         1500000 / 128,
476         750000 / 128,
477 };
478
479 static int it87_probe(struct platform_device *pdev);
480 static int it87_remove(struct platform_device *pdev);
481
482 static int it87_read_value(struct it87_data *data, u8 reg);
483 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
484 static struct it87_data *it87_update_device(struct device *dev);
485 static int it87_check_pwm(struct device *dev);
486 static void it87_init_device(struct platform_device *pdev);
487
488
489 static struct platform_driver it87_driver = {
490         .driver = {
491                 .owner  = THIS_MODULE,
492                 .name   = DRVNAME,
493         },
494         .probe  = it87_probe,
495         .remove = it87_remove,
496 };
497
498 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
499                        char *buf)
500 {
501         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
502         int nr = sattr->nr;
503         int index = sattr->index;
504
505         struct it87_data *data = it87_update_device(dev);
506         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
507 }
508
509 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
510                       const char *buf, size_t count)
511 {
512         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
513         int nr = sattr->nr;
514         int index = sattr->index;
515
516         struct it87_data *data = dev_get_drvdata(dev);
517         unsigned long val;
518
519         if (kstrtoul(buf, 10, &val) < 0)
520                 return -EINVAL;
521
522         mutex_lock(&data->update_lock);
523         data->in[nr][index] = in_to_reg(data, nr, val);
524         it87_write_value(data,
525                          index == 1 ? IT87_REG_VIN_MIN(nr)
526                                     : IT87_REG_VIN_MAX(nr),
527                          data->in[nr][index]);
528         mutex_unlock(&data->update_lock);
529         return count;
530 }
531
532 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
533 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
534                             0, 1);
535 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
536                             0, 2);
537
538 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
539 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
540                             1, 1);
541 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
542                             1, 2);
543
544 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
545 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
546                             2, 1);
547 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
548                             2, 2);
549
550 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
551 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
552                             3, 1);
553 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
554                             3, 2);
555
556 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
557 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
558                             4, 1);
559 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
560                             4, 2);
561
562 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
563 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
564                             5, 1);
565 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
566                             5, 2);
567
568 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
569 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
570                             6, 1);
571 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
572                             6, 2);
573
574 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
575 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
576                             7, 1);
577 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
578                             7, 2);
579
580 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
581
582 /* 3 temperatures */
583 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
584                          char *buf)
585 {
586         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
587         int nr = sattr->nr;
588         int index = sattr->index;
589         struct it87_data *data = it87_update_device(dev);
590
591         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
592 }
593
594 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
595                         const char *buf, size_t count)
596 {
597         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
598         int nr = sattr->nr;
599         int index = sattr->index;
600         struct it87_data *data = dev_get_drvdata(dev);
601         long val;
602         u8 reg, regval;
603
604         if (kstrtol(buf, 10, &val) < 0)
605                 return -EINVAL;
606
607         mutex_lock(&data->update_lock);
608
609         switch (index) {
610         default:
611         case 1:
612                 reg = IT87_REG_TEMP_LOW(nr);
613                 break;
614         case 2:
615                 reg = IT87_REG_TEMP_HIGH(nr);
616                 break;
617         case 3:
618                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
619                 if (!(regval & 0x80)) {
620                         regval |= 0x80;
621                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
622                 }
623                 data->valid = 0;
624                 reg = IT87_REG_TEMP_OFFSET[nr];
625                 break;
626         }
627
628         data->temp[nr][index] = TEMP_TO_REG(val);
629         it87_write_value(data, reg, data->temp[nr][index]);
630         mutex_unlock(&data->update_lock);
631         return count;
632 }
633
634 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
635 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
636                             0, 1);
637 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
638                             0, 2);
639 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
640                             set_temp, 0, 3);
641 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
642 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
643                             1, 1);
644 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
645                             1, 2);
646 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
647                             set_temp, 1, 3);
648 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
649 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
650                             2, 1);
651 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
652                             2, 2);
653 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
654                             set_temp, 2, 3);
655
656 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
657                               char *buf)
658 {
659         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
660         int nr = sensor_attr->index;
661         struct it87_data *data = it87_update_device(dev);
662         u8 reg = data->sensor;      /* In case value is updated while used */
663         u8 extra = data->extra;
664
665         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
666             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
667                 return sprintf(buf, "6\n");  /* Intel PECI */
668         if (reg & (1 << nr))
669                 return sprintf(buf, "3\n");  /* thermal diode */
670         if (reg & (8 << nr))
671                 return sprintf(buf, "4\n");  /* thermistor */
672         return sprintf(buf, "0\n");      /* disabled */
673 }
674
675 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
676                              const char *buf, size_t count)
677 {
678         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
679         int nr = sensor_attr->index;
680
681         struct it87_data *data = dev_get_drvdata(dev);
682         long val;
683         u8 reg, extra;
684
685         if (kstrtol(buf, 10, &val) < 0)
686                 return -EINVAL;
687
688         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
689         reg &= ~(1 << nr);
690         reg &= ~(8 << nr);
691         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
692                 reg &= 0x3f;
693         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
694         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
695                 extra &= 0x7f;
696         if (val == 2) { /* backwards compatibility */
697                 dev_warn(dev,
698                          "Sensor type 2 is deprecated, please use 4 instead\n");
699                 val = 4;
700         }
701         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
702         if (val == 3)
703                 reg |= 1 << nr;
704         else if (val == 4)
705                 reg |= 8 << nr;
706         else if (has_temp_peci(data, nr) && val == 6)
707                 reg |= (nr + 1) << 6;
708         else if (has_temp_old_peci(data, nr) && val == 6)
709                 extra |= 0x80;
710         else if (val != 0)
711                 return -EINVAL;
712
713         mutex_lock(&data->update_lock);
714         data->sensor = reg;
715         data->extra = extra;
716         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
717         if (has_temp_old_peci(data, nr))
718                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
719         data->valid = 0;        /* Force cache refresh */
720         mutex_unlock(&data->update_lock);
721         return count;
722 }
723
724 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
725                           set_temp_type, 0);
726 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
727                           set_temp_type, 1);
728 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
729                           set_temp_type, 2);
730
731 /* 3 Fans */
732
733 static int pwm_mode(const struct it87_data *data, int nr)
734 {
735         int ctrl = data->fan_main_ctrl & (1 << nr);
736
737         if (ctrl == 0)                                  /* Full speed */
738                 return 0;
739         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
740                 return 2;
741         else                                            /* Manual mode */
742                 return 1;
743 }
744
745 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
746                         char *buf)
747 {
748         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
749         int nr = sattr->nr;
750         int index = sattr->index;
751         int speed;
752         struct it87_data *data = it87_update_device(dev);
753
754         speed = has_16bit_fans(data) ?
755                 FAN16_FROM_REG(data->fan[nr][index]) :
756                 FAN_FROM_REG(data->fan[nr][index],
757                              DIV_FROM_REG(data->fan_div[nr]));
758         return sprintf(buf, "%d\n", speed);
759 }
760
761 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
762                 char *buf)
763 {
764         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
765         int nr = sensor_attr->index;
766
767         struct it87_data *data = it87_update_device(dev);
768         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
769 }
770 static ssize_t show_pwm_enable(struct device *dev,
771                 struct device_attribute *attr, char *buf)
772 {
773         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
774         int nr = sensor_attr->index;
775
776         struct it87_data *data = it87_update_device(dev);
777         return sprintf(buf, "%d\n", pwm_mode(data, nr));
778 }
779 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
780                 char *buf)
781 {
782         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
783         int nr = sensor_attr->index;
784
785         struct it87_data *data = it87_update_device(dev);
786         return sprintf(buf, "%d\n",
787                        pwm_from_reg(data, data->pwm_duty[nr]));
788 }
789 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
790                 char *buf)
791 {
792         struct it87_data *data = it87_update_device(dev);
793         int index = (data->fan_ctl >> 4) & 0x07;
794
795         return sprintf(buf, "%u\n", pwm_freq[index]);
796 }
797
798 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
799                        const char *buf, size_t count)
800 {
801         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
802         int nr = sattr->nr;
803         int index = sattr->index;
804
805         struct it87_data *data = dev_get_drvdata(dev);
806         long val;
807         u8 reg;
808
809         if (kstrtol(buf, 10, &val) < 0)
810                 return -EINVAL;
811
812         mutex_lock(&data->update_lock);
813
814         if (has_16bit_fans(data)) {
815                 data->fan[nr][index] = FAN16_TO_REG(val);
816                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
817                                  data->fan[nr][index] & 0xff);
818                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
819                                  data->fan[nr][index] >> 8);
820         } else {
821                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
822                 switch (nr) {
823                 case 0:
824                         data->fan_div[nr] = reg & 0x07;
825                         break;
826                 case 1:
827                         data->fan_div[nr] = (reg >> 3) & 0x07;
828                         break;
829                 case 2:
830                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
831                         break;
832                 }
833                 data->fan[nr][index] =
834                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
835                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
836                                  data->fan[nr][index]);
837         }
838
839         mutex_unlock(&data->update_lock);
840         return count;
841 }
842
843 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
844                 const char *buf, size_t count)
845 {
846         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
847         int nr = sensor_attr->index;
848
849         struct it87_data *data = dev_get_drvdata(dev);
850         unsigned long val;
851         int min;
852         u8 old;
853
854         if (kstrtoul(buf, 10, &val) < 0)
855                 return -EINVAL;
856
857         mutex_lock(&data->update_lock);
858         old = it87_read_value(data, IT87_REG_FAN_DIV);
859
860         /* Save fan min limit */
861         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
862
863         switch (nr) {
864         case 0:
865         case 1:
866                 data->fan_div[nr] = DIV_TO_REG(val);
867                 break;
868         case 2:
869                 if (val < 8)
870                         data->fan_div[nr] = 1;
871                 else
872                         data->fan_div[nr] = 3;
873         }
874         val = old & 0x80;
875         val |= (data->fan_div[0] & 0x07);
876         val |= (data->fan_div[1] & 0x07) << 3;
877         if (data->fan_div[2] == 3)
878                 val |= 0x1 << 6;
879         it87_write_value(data, IT87_REG_FAN_DIV, val);
880
881         /* Restore fan min limit */
882         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
883         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
884
885         mutex_unlock(&data->update_lock);
886         return count;
887 }
888
889 /* Returns 0 if OK, -EINVAL otherwise */
890 static int check_trip_points(struct device *dev, int nr)
891 {
892         const struct it87_data *data = dev_get_drvdata(dev);
893         int i, err = 0;
894
895         if (has_old_autopwm(data)) {
896                 for (i = 0; i < 3; i++) {
897                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
898                                 err = -EINVAL;
899                 }
900                 for (i = 0; i < 2; i++) {
901                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
902                                 err = -EINVAL;
903                 }
904         }
905
906         if (err) {
907                 dev_err(dev,
908                         "Inconsistent trip points, not switching to automatic mode\n");
909                 dev_err(dev, "Adjust the trip points and try again\n");
910         }
911         return err;
912 }
913
914 static ssize_t set_pwm_enable(struct device *dev,
915                 struct device_attribute *attr, const char *buf, size_t count)
916 {
917         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
918         int nr = sensor_attr->index;
919
920         struct it87_data *data = dev_get_drvdata(dev);
921         long val;
922
923         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
924                 return -EINVAL;
925
926         /* Check trip points before switching to automatic mode */
927         if (val == 2) {
928                 if (check_trip_points(dev, nr) < 0)
929                         return -EINVAL;
930         }
931
932         mutex_lock(&data->update_lock);
933
934         if (val == 0) {
935                 int tmp;
936                 /* make sure the fan is on when in on/off mode */
937                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
938                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
939                 /* set on/off mode */
940                 data->fan_main_ctrl &= ~(1 << nr);
941                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
942                                  data->fan_main_ctrl);
943         } else {
944                 if (val == 1)                           /* Manual mode */
945                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
946                                              data->pwm_temp_map[nr] :
947                                              data->pwm_duty[nr];
948                 else                                    /* Automatic mode */
949                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
950                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
951                 /* set SmartGuardian mode */
952                 data->fan_main_ctrl |= (1 << nr);
953                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
954                                  data->fan_main_ctrl);
955         }
956
957         mutex_unlock(&data->update_lock);
958         return count;
959 }
960 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
961                 const char *buf, size_t count)
962 {
963         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
964         int nr = sensor_attr->index;
965
966         struct it87_data *data = dev_get_drvdata(dev);
967         long val;
968
969         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
970                 return -EINVAL;
971
972         mutex_lock(&data->update_lock);
973         if (has_newer_autopwm(data)) {
974                 /*
975                  * If we are in automatic mode, the PWM duty cycle register
976                  * is read-only so we can't write the value.
977                  */
978                 if (data->pwm_ctrl[nr] & 0x80) {
979                         mutex_unlock(&data->update_lock);
980                         return -EBUSY;
981                 }
982                 data->pwm_duty[nr] = pwm_to_reg(data, val);
983                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
984                                  data->pwm_duty[nr]);
985         } else {
986                 data->pwm_duty[nr] = pwm_to_reg(data, val);
987                 /*
988                  * If we are in manual mode, write the duty cycle immediately;
989                  * otherwise, just store it for later use.
990                  */
991                 if (!(data->pwm_ctrl[nr] & 0x80)) {
992                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
993                         it87_write_value(data, IT87_REG_PWM(nr),
994                                          data->pwm_ctrl[nr]);
995                 }
996         }
997         mutex_unlock(&data->update_lock);
998         return count;
999 }
1000 static ssize_t set_pwm_freq(struct device *dev,
1001                 struct device_attribute *attr, const char *buf, size_t count)
1002 {
1003         struct it87_data *data = dev_get_drvdata(dev);
1004         unsigned long val;
1005         int i;
1006
1007         if (kstrtoul(buf, 10, &val) < 0)
1008                 return -EINVAL;
1009
1010         /* Search for the nearest available frequency */
1011         for (i = 0; i < 7; i++) {
1012                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1013                         break;
1014         }
1015
1016         mutex_lock(&data->update_lock);
1017         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1018         data->fan_ctl |= i << 4;
1019         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1020         mutex_unlock(&data->update_lock);
1021
1022         return count;
1023 }
1024 static ssize_t show_pwm_temp_map(struct device *dev,
1025                 struct device_attribute *attr, char *buf)
1026 {
1027         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1028         int nr = sensor_attr->index;
1029
1030         struct it87_data *data = it87_update_device(dev);
1031         int map;
1032
1033         if (data->pwm_temp_map[nr] < 3)
1034                 map = 1 << data->pwm_temp_map[nr];
1035         else
1036                 map = 0;                        /* Should never happen */
1037         return sprintf(buf, "%d\n", map);
1038 }
1039 static ssize_t set_pwm_temp_map(struct device *dev,
1040                 struct device_attribute *attr, const char *buf, size_t count)
1041 {
1042         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1043         int nr = sensor_attr->index;
1044
1045         struct it87_data *data = dev_get_drvdata(dev);
1046         long val;
1047         u8 reg;
1048
1049         /*
1050          * This check can go away if we ever support automatic fan speed
1051          * control on newer chips.
1052          */
1053         if (!has_old_autopwm(data)) {
1054                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1055                 return -EINVAL;
1056         }
1057
1058         if (kstrtol(buf, 10, &val) < 0)
1059                 return -EINVAL;
1060
1061         switch (val) {
1062         case (1 << 0):
1063                 reg = 0x00;
1064                 break;
1065         case (1 << 1):
1066                 reg = 0x01;
1067                 break;
1068         case (1 << 2):
1069                 reg = 0x02;
1070                 break;
1071         default:
1072                 return -EINVAL;
1073         }
1074
1075         mutex_lock(&data->update_lock);
1076         data->pwm_temp_map[nr] = reg;
1077         /*
1078          * If we are in automatic mode, write the temp mapping immediately;
1079          * otherwise, just store it for later use.
1080          */
1081         if (data->pwm_ctrl[nr] & 0x80) {
1082                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1083                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1084         }
1085         mutex_unlock(&data->update_lock);
1086         return count;
1087 }
1088
1089 static ssize_t show_auto_pwm(struct device *dev,
1090                 struct device_attribute *attr, char *buf)
1091 {
1092         struct it87_data *data = it87_update_device(dev);
1093         struct sensor_device_attribute_2 *sensor_attr =
1094                         to_sensor_dev_attr_2(attr);
1095         int nr = sensor_attr->nr;
1096         int point = sensor_attr->index;
1097
1098         return sprintf(buf, "%d\n",
1099                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1100 }
1101
1102 static ssize_t set_auto_pwm(struct device *dev,
1103                 struct device_attribute *attr, const char *buf, size_t count)
1104 {
1105         struct it87_data *data = dev_get_drvdata(dev);
1106         struct sensor_device_attribute_2 *sensor_attr =
1107                         to_sensor_dev_attr_2(attr);
1108         int nr = sensor_attr->nr;
1109         int point = sensor_attr->index;
1110         long val;
1111
1112         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1113                 return -EINVAL;
1114
1115         mutex_lock(&data->update_lock);
1116         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1117         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1118                          data->auto_pwm[nr][point]);
1119         mutex_unlock(&data->update_lock);
1120         return count;
1121 }
1122
1123 static ssize_t show_auto_temp(struct device *dev,
1124                 struct device_attribute *attr, char *buf)
1125 {
1126         struct it87_data *data = it87_update_device(dev);
1127         struct sensor_device_attribute_2 *sensor_attr =
1128                         to_sensor_dev_attr_2(attr);
1129         int nr = sensor_attr->nr;
1130         int point = sensor_attr->index;
1131
1132         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1133 }
1134
1135 static ssize_t set_auto_temp(struct device *dev,
1136                 struct device_attribute *attr, const char *buf, size_t count)
1137 {
1138         struct it87_data *data = dev_get_drvdata(dev);
1139         struct sensor_device_attribute_2 *sensor_attr =
1140                         to_sensor_dev_attr_2(attr);
1141         int nr = sensor_attr->nr;
1142         int point = sensor_attr->index;
1143         long val;
1144
1145         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1146                 return -EINVAL;
1147
1148         mutex_lock(&data->update_lock);
1149         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1150         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1151                          data->auto_temp[nr][point]);
1152         mutex_unlock(&data->update_lock);
1153         return count;
1154 }
1155
1156 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1157 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1158                             0, 1);
1159 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1160                           set_fan_div, 0);
1161
1162 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1163 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1164                             1, 1);
1165 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1166                           set_fan_div, 1);
1167
1168 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1169 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1170                             2, 1);
1171 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1172                           set_fan_div, 2);
1173
1174 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1175 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1176                             3, 1);
1177
1178 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1179 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1180                             4, 1);
1181
1182 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1183                           show_pwm_enable, set_pwm_enable, 0);
1184 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1185 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1186 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1187                           show_pwm_temp_map, set_pwm_temp_map, 0);
1188 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1189                             show_auto_pwm, set_auto_pwm, 0, 0);
1190 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1191                             show_auto_pwm, set_auto_pwm, 0, 1);
1192 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1193                             show_auto_pwm, set_auto_pwm, 0, 2);
1194 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1195                             show_auto_pwm, NULL, 0, 3);
1196 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1197                             show_auto_temp, set_auto_temp, 0, 1);
1198 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1199                             show_auto_temp, set_auto_temp, 0, 0);
1200 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1201                             show_auto_temp, set_auto_temp, 0, 2);
1202 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1203                             show_auto_temp, set_auto_temp, 0, 3);
1204 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1205                             show_auto_temp, set_auto_temp, 0, 4);
1206
1207 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1208                           show_pwm_enable, set_pwm_enable, 1);
1209 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1210 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1211 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1212                           show_pwm_temp_map, set_pwm_temp_map, 1);
1213 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1214                             show_auto_pwm, set_auto_pwm, 1, 0);
1215 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1216                             show_auto_pwm, set_auto_pwm, 1, 1);
1217 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1218                             show_auto_pwm, set_auto_pwm, 1, 2);
1219 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1220                             show_auto_pwm, NULL, 1, 3);
1221 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1222                             show_auto_temp, set_auto_temp, 1, 1);
1223 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1224                             show_auto_temp, set_auto_temp, 1, 0);
1225 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1226                             show_auto_temp, set_auto_temp, 1, 2);
1227 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1228                             show_auto_temp, set_auto_temp, 1, 3);
1229 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1230                             show_auto_temp, set_auto_temp, 1, 4);
1231
1232 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1233                           show_pwm_enable, set_pwm_enable, 2);
1234 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1235 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1236 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1237                           show_pwm_temp_map, set_pwm_temp_map, 2);
1238 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1239                             show_auto_pwm, set_auto_pwm, 2, 0);
1240 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1241                             show_auto_pwm, set_auto_pwm, 2, 1);
1242 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1243                             show_auto_pwm, set_auto_pwm, 2, 2);
1244 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1245                             show_auto_pwm, NULL, 2, 3);
1246 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1247                             show_auto_temp, set_auto_temp, 2, 1);
1248 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1249                             show_auto_temp, set_auto_temp, 2, 0);
1250 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1251                             show_auto_temp, set_auto_temp, 2, 2);
1252 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1253                             show_auto_temp, set_auto_temp, 2, 3);
1254 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1255                             show_auto_temp, set_auto_temp, 2, 4);
1256
1257 /* Alarms */
1258 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1259                 char *buf)
1260 {
1261         struct it87_data *data = it87_update_device(dev);
1262         return sprintf(buf, "%u\n", data->alarms);
1263 }
1264 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1265
1266 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1267                 char *buf)
1268 {
1269         int bitnr = to_sensor_dev_attr(attr)->index;
1270         struct it87_data *data = it87_update_device(dev);
1271         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1272 }
1273
1274 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1275                 *attr, const char *buf, size_t count)
1276 {
1277         struct it87_data *data = dev_get_drvdata(dev);
1278         long val;
1279         int config;
1280
1281         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1282                 return -EINVAL;
1283
1284         mutex_lock(&data->update_lock);
1285         config = it87_read_value(data, IT87_REG_CONFIG);
1286         if (config < 0) {
1287                 count = config;
1288         } else {
1289                 config |= 1 << 5;
1290                 it87_write_value(data, IT87_REG_CONFIG, config);
1291                 /* Invalidate cache to force re-read */
1292                 data->valid = 0;
1293         }
1294         mutex_unlock(&data->update_lock);
1295
1296         return count;
1297 }
1298
1299 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1300 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1301 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1302 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1303 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1304 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1305 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1306 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1307 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1308 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1309 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1310 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1311 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1312 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1313 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1314 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1315 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1316                           show_alarm, clear_intrusion, 4);
1317
1318 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1319                 char *buf)
1320 {
1321         int bitnr = to_sensor_dev_attr(attr)->index;
1322         struct it87_data *data = it87_update_device(dev);
1323         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1324 }
1325 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1326                 const char *buf, size_t count)
1327 {
1328         int bitnr = to_sensor_dev_attr(attr)->index;
1329         struct it87_data *data = dev_get_drvdata(dev);
1330         long val;
1331
1332         if (kstrtol(buf, 10, &val) < 0
1333          || (val != 0 && val != 1))
1334                 return -EINVAL;
1335
1336         mutex_lock(&data->update_lock);
1337         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1338         if (val)
1339                 data->beeps |= (1 << bitnr);
1340         else
1341                 data->beeps &= ~(1 << bitnr);
1342         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1343         mutex_unlock(&data->update_lock);
1344         return count;
1345 }
1346
1347 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1348                           show_beep, set_beep, 1);
1349 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1350 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1351 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1352 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1353 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1354 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1355 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1356 /* fanX_beep writability is set later */
1357 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1358 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1359 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1360 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1361 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1362 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1363                           show_beep, set_beep, 2);
1364 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1365 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1366
1367 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1368                 char *buf)
1369 {
1370         struct it87_data *data = dev_get_drvdata(dev);
1371         return sprintf(buf, "%u\n", data->vrm);
1372 }
1373 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1374                 const char *buf, size_t count)
1375 {
1376         struct it87_data *data = dev_get_drvdata(dev);
1377         unsigned long val;
1378
1379         if (kstrtoul(buf, 10, &val) < 0)
1380                 return -EINVAL;
1381
1382         data->vrm = val;
1383
1384         return count;
1385 }
1386 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1387
1388 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1389                 char *buf)
1390 {
1391         struct it87_data *data = it87_update_device(dev);
1392         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1393 }
1394 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1395
1396 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1397                 char *buf)
1398 {
1399         static const char * const labels[] = {
1400                 "+5V",
1401                 "5VSB",
1402                 "Vbat",
1403         };
1404         static const char * const labels_it8721[] = {
1405                 "+3.3V",
1406                 "3VSB",
1407                 "Vbat",
1408         };
1409         struct it87_data *data = dev_get_drvdata(dev);
1410         int nr = to_sensor_dev_attr(attr)->index;
1411
1412         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1413                                                        : labels[nr]);
1414 }
1415 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1416 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1417 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1418
1419 static ssize_t show_name(struct device *dev, struct device_attribute
1420                          *devattr, char *buf)
1421 {
1422         struct it87_data *data = dev_get_drvdata(dev);
1423         return sprintf(buf, "%s\n", data->name);
1424 }
1425 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1426
1427 static struct attribute *it87_attributes_in[9][5] = {
1428 {
1429         &sensor_dev_attr_in0_input.dev_attr.attr,
1430         &sensor_dev_attr_in0_min.dev_attr.attr,
1431         &sensor_dev_attr_in0_max.dev_attr.attr,
1432         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1433         NULL
1434 }, {
1435         &sensor_dev_attr_in1_input.dev_attr.attr,
1436         &sensor_dev_attr_in1_min.dev_attr.attr,
1437         &sensor_dev_attr_in1_max.dev_attr.attr,
1438         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1439         NULL
1440 }, {
1441         &sensor_dev_attr_in2_input.dev_attr.attr,
1442         &sensor_dev_attr_in2_min.dev_attr.attr,
1443         &sensor_dev_attr_in2_max.dev_attr.attr,
1444         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1445         NULL
1446 }, {
1447         &sensor_dev_attr_in3_input.dev_attr.attr,
1448         &sensor_dev_attr_in3_min.dev_attr.attr,
1449         &sensor_dev_attr_in3_max.dev_attr.attr,
1450         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1451         NULL
1452 }, {
1453         &sensor_dev_attr_in4_input.dev_attr.attr,
1454         &sensor_dev_attr_in4_min.dev_attr.attr,
1455         &sensor_dev_attr_in4_max.dev_attr.attr,
1456         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1457         NULL
1458 }, {
1459         &sensor_dev_attr_in5_input.dev_attr.attr,
1460         &sensor_dev_attr_in5_min.dev_attr.attr,
1461         &sensor_dev_attr_in5_max.dev_attr.attr,
1462         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1463         NULL
1464 }, {
1465         &sensor_dev_attr_in6_input.dev_attr.attr,
1466         &sensor_dev_attr_in6_min.dev_attr.attr,
1467         &sensor_dev_attr_in6_max.dev_attr.attr,
1468         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1469         NULL
1470 }, {
1471         &sensor_dev_attr_in7_input.dev_attr.attr,
1472         &sensor_dev_attr_in7_min.dev_attr.attr,
1473         &sensor_dev_attr_in7_max.dev_attr.attr,
1474         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1475         NULL
1476 }, {
1477         &sensor_dev_attr_in8_input.dev_attr.attr,
1478         NULL
1479 } };
1480
1481 static const struct attribute_group it87_group_in[9] = {
1482         { .attrs = it87_attributes_in[0] },
1483         { .attrs = it87_attributes_in[1] },
1484         { .attrs = it87_attributes_in[2] },
1485         { .attrs = it87_attributes_in[3] },
1486         { .attrs = it87_attributes_in[4] },
1487         { .attrs = it87_attributes_in[5] },
1488         { .attrs = it87_attributes_in[6] },
1489         { .attrs = it87_attributes_in[7] },
1490         { .attrs = it87_attributes_in[8] },
1491 };
1492
1493 static struct attribute *it87_attributes_temp[3][6] = {
1494 {
1495         &sensor_dev_attr_temp1_input.dev_attr.attr,
1496         &sensor_dev_attr_temp1_max.dev_attr.attr,
1497         &sensor_dev_attr_temp1_min.dev_attr.attr,
1498         &sensor_dev_attr_temp1_type.dev_attr.attr,
1499         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1500         NULL
1501 } , {
1502         &sensor_dev_attr_temp2_input.dev_attr.attr,
1503         &sensor_dev_attr_temp2_max.dev_attr.attr,
1504         &sensor_dev_attr_temp2_min.dev_attr.attr,
1505         &sensor_dev_attr_temp2_type.dev_attr.attr,
1506         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1507         NULL
1508 } , {
1509         &sensor_dev_attr_temp3_input.dev_attr.attr,
1510         &sensor_dev_attr_temp3_max.dev_attr.attr,
1511         &sensor_dev_attr_temp3_min.dev_attr.attr,
1512         &sensor_dev_attr_temp3_type.dev_attr.attr,
1513         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1514         NULL
1515 } };
1516
1517 static const struct attribute_group it87_group_temp[3] = {
1518         { .attrs = it87_attributes_temp[0] },
1519         { .attrs = it87_attributes_temp[1] },
1520         { .attrs = it87_attributes_temp[2] },
1521 };
1522
1523 static struct attribute *it87_attributes_temp_offset[] = {
1524         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1525         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1526         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1527 };
1528
1529 static struct attribute *it87_attributes[] = {
1530         &dev_attr_alarms.attr,
1531         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1532         &dev_attr_name.attr,
1533         NULL
1534 };
1535
1536 static const struct attribute_group it87_group = {
1537         .attrs = it87_attributes,
1538 };
1539
1540 static struct attribute *it87_attributes_in_beep[] = {
1541         &sensor_dev_attr_in0_beep.dev_attr.attr,
1542         &sensor_dev_attr_in1_beep.dev_attr.attr,
1543         &sensor_dev_attr_in2_beep.dev_attr.attr,
1544         &sensor_dev_attr_in3_beep.dev_attr.attr,
1545         &sensor_dev_attr_in4_beep.dev_attr.attr,
1546         &sensor_dev_attr_in5_beep.dev_attr.attr,
1547         &sensor_dev_attr_in6_beep.dev_attr.attr,
1548         &sensor_dev_attr_in7_beep.dev_attr.attr,
1549         NULL
1550 };
1551
1552 static struct attribute *it87_attributes_temp_beep[] = {
1553         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1554         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1555         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1556 };
1557
1558 static struct attribute *it87_attributes_fan[5][3+1] = { {
1559         &sensor_dev_attr_fan1_input.dev_attr.attr,
1560         &sensor_dev_attr_fan1_min.dev_attr.attr,
1561         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1562         NULL
1563 }, {
1564         &sensor_dev_attr_fan2_input.dev_attr.attr,
1565         &sensor_dev_attr_fan2_min.dev_attr.attr,
1566         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1567         NULL
1568 }, {
1569         &sensor_dev_attr_fan3_input.dev_attr.attr,
1570         &sensor_dev_attr_fan3_min.dev_attr.attr,
1571         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1572         NULL
1573 }, {
1574         &sensor_dev_attr_fan4_input.dev_attr.attr,
1575         &sensor_dev_attr_fan4_min.dev_attr.attr,
1576         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1577         NULL
1578 }, {
1579         &sensor_dev_attr_fan5_input.dev_attr.attr,
1580         &sensor_dev_attr_fan5_min.dev_attr.attr,
1581         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1582         NULL
1583 } };
1584
1585 static const struct attribute_group it87_group_fan[5] = {
1586         { .attrs = it87_attributes_fan[0] },
1587         { .attrs = it87_attributes_fan[1] },
1588         { .attrs = it87_attributes_fan[2] },
1589         { .attrs = it87_attributes_fan[3] },
1590         { .attrs = it87_attributes_fan[4] },
1591 };
1592
1593 static const struct attribute *it87_attributes_fan_div[] = {
1594         &sensor_dev_attr_fan1_div.dev_attr.attr,
1595         &sensor_dev_attr_fan2_div.dev_attr.attr,
1596         &sensor_dev_attr_fan3_div.dev_attr.attr,
1597 };
1598
1599 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1600         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1601         &sensor_dev_attr_pwm1.dev_attr.attr,
1602         &dev_attr_pwm1_freq.attr,
1603         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1604         NULL
1605 }, {
1606         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1607         &sensor_dev_attr_pwm2.dev_attr.attr,
1608         &dev_attr_pwm2_freq.attr,
1609         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1610         NULL
1611 }, {
1612         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1613         &sensor_dev_attr_pwm3.dev_attr.attr,
1614         &dev_attr_pwm3_freq.attr,
1615         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1616         NULL
1617 } };
1618
1619 static const struct attribute_group it87_group_pwm[3] = {
1620         { .attrs = it87_attributes_pwm[0] },
1621         { .attrs = it87_attributes_pwm[1] },
1622         { .attrs = it87_attributes_pwm[2] },
1623 };
1624
1625 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1626         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1627         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1628         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1629         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1630         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1631         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1632         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1633         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1634         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1635         NULL
1636 }, {
1637         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1638         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1639         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1640         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1641         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1642         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1643         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1644         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1645         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1646         NULL
1647 }, {
1648         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1649         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1650         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1651         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1652         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1653         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1654         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1655         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1656         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1657         NULL
1658 } };
1659
1660 static const struct attribute_group it87_group_autopwm[3] = {
1661         { .attrs = it87_attributes_autopwm[0] },
1662         { .attrs = it87_attributes_autopwm[1] },
1663         { .attrs = it87_attributes_autopwm[2] },
1664 };
1665
1666 static struct attribute *it87_attributes_fan_beep[] = {
1667         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1668         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1669         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1670         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1671         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1672 };
1673
1674 static struct attribute *it87_attributes_vid[] = {
1675         &dev_attr_vrm.attr,
1676         &dev_attr_cpu0_vid.attr,
1677         NULL
1678 };
1679
1680 static const struct attribute_group it87_group_vid = {
1681         .attrs = it87_attributes_vid,
1682 };
1683
1684 static struct attribute *it87_attributes_label[] = {
1685         &sensor_dev_attr_in3_label.dev_attr.attr,
1686         &sensor_dev_attr_in7_label.dev_attr.attr,
1687         &sensor_dev_attr_in8_label.dev_attr.attr,
1688         NULL
1689 };
1690
1691 static const struct attribute_group it87_group_label = {
1692         .attrs = it87_attributes_label,
1693 };
1694
1695 /* SuperIO detection - will change isa_address if a chip is found */
1696 static int __init it87_find(unsigned short *address,
1697         struct it87_sio_data *sio_data)
1698 {
1699         int err;
1700         u16 chip_type;
1701         const char *board_vendor, *board_name;
1702
1703         err = superio_enter();
1704         if (err)
1705                 return err;
1706
1707         err = -ENODEV;
1708         chip_type = force_id ? force_id : superio_inw(DEVID);
1709
1710         switch (chip_type) {
1711         case IT8705F_DEVID:
1712                 sio_data->type = it87;
1713                 break;
1714         case IT8712F_DEVID:
1715                 sio_data->type = it8712;
1716                 break;
1717         case IT8716F_DEVID:
1718         case IT8726F_DEVID:
1719                 sio_data->type = it8716;
1720                 break;
1721         case IT8718F_DEVID:
1722                 sio_data->type = it8718;
1723                 break;
1724         case IT8720F_DEVID:
1725                 sio_data->type = it8720;
1726                 break;
1727         case IT8721F_DEVID:
1728                 sio_data->type = it8721;
1729                 break;
1730         case IT8728F_DEVID:
1731                 sio_data->type = it8728;
1732                 break;
1733         case IT8771E_DEVID:
1734                 sio_data->type = it8771;
1735                 break;
1736         case IT8772E_DEVID:
1737                 sio_data->type = it8772;
1738                 break;
1739         case IT8782F_DEVID:
1740                 sio_data->type = it8782;
1741                 break;
1742         case IT8783E_DEVID:
1743                 sio_data->type = it8783;
1744                 break;
1745         case 0xffff:    /* No device at all */
1746                 goto exit;
1747         default:
1748                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1749                 goto exit;
1750         }
1751
1752         superio_select(PME);
1753         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1754                 pr_info("Device not activated, skipping\n");
1755                 goto exit;
1756         }
1757
1758         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1759         if (*address == 0) {
1760                 pr_info("Base address not set, skipping\n");
1761                 goto exit;
1762         }
1763
1764         err = 0;
1765         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1766         pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1767                 chip_type, *address, sio_data->revision);
1768
1769         /* in8 (Vbat) is always internal */
1770         sio_data->internal = (1 << 2);
1771
1772         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1773         if (sio_data->type == it87) {
1774                 /* The IT8705F doesn't have VID pins at all */
1775                 sio_data->skip_vid = 1;
1776
1777                 /* The IT8705F has a different LD number for GPIO */
1778                 superio_select(5);
1779                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1780         } else if (sio_data->type == it8783) {
1781                 int reg25, reg27, reg2A, reg2C, regEF;
1782
1783                 sio_data->skip_vid = 1; /* No VID */
1784
1785                 superio_select(GPIO);
1786
1787                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1788                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1789                 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1790                 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1791                 regEF = superio_inb(IT87_SIO_SPI_REG);
1792
1793                 /* Check if fan3 is there or not */
1794                 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1795                         sio_data->skip_fan |= (1 << 2);
1796                 if ((reg25 & (1 << 4))
1797                     || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1798                         sio_data->skip_pwm |= (1 << 2);
1799
1800                 /* Check if fan2 is there or not */
1801                 if (reg27 & (1 << 7))
1802                         sio_data->skip_fan |= (1 << 1);
1803                 if (reg27 & (1 << 3))
1804                         sio_data->skip_pwm |= (1 << 1);
1805
1806                 /* VIN5 */
1807                 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1808                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1809
1810                 /* VIN6 */
1811                 if (reg27 & (1 << 1))
1812                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1813
1814                 /*
1815                  * VIN7
1816                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1817                  */
1818                 if (reg27 & (1 << 2)) {
1819                         /*
1820                          * The data sheet is a bit unclear regarding the
1821                          * internal voltage divider for VCCH5V. It says
1822                          * "This bit enables and switches VIN7 (pin 91) to the
1823                          * internal voltage divider for VCCH5V".
1824                          * This is different to other chips, where the internal
1825                          * voltage divider would connect VIN7 to an internal
1826                          * voltage source. Maybe that is the case here as well.
1827                          *
1828                          * Since we don't know for sure, re-route it if that is
1829                          * not the case, and ask the user to report if the
1830                          * resulting voltage is sane.
1831                          */
1832                         if (!(reg2C & (1 << 1))) {
1833                                 reg2C |= (1 << 1);
1834                                 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1835                                 pr_notice("Routing internal VCCH5V to in7.\n");
1836                         }
1837                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1838                         pr_notice("Please report if it displays a reasonable voltage.\n");
1839                 }
1840
1841                 if (reg2C & (1 << 0))
1842                         sio_data->internal |= (1 << 0);
1843                 if (reg2C & (1 << 1))
1844                         sio_data->internal |= (1 << 1);
1845
1846                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1847
1848         } else {
1849                 int reg;
1850                 bool uart6;
1851
1852                 superio_select(GPIO);
1853
1854                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1855                 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1856                     sio_data->type == it8771 || sio_data->type == it8772 ||
1857                     sio_data->type == it8782) {
1858                         /*
1859                          * IT8721F/IT8758E, and IT8782F don't have VID pins
1860                          * at all, not sure about the IT8728F and compatibles.
1861                          */
1862                         sio_data->skip_vid = 1;
1863                 } else {
1864                         /* We need at least 4 VID pins */
1865                         if (reg & 0x0f) {
1866                                 pr_info("VID is disabled (pins used for GPIO)\n");
1867                                 sio_data->skip_vid = 1;
1868                         }
1869                 }
1870
1871                 /* Check if fan3 is there or not */
1872                 if (reg & (1 << 6))
1873                         sio_data->skip_pwm |= (1 << 2);
1874                 if (reg & (1 << 7))
1875                         sio_data->skip_fan |= (1 << 2);
1876
1877                 /* Check if fan2 is there or not */
1878                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1879                 if (reg & (1 << 1))
1880                         sio_data->skip_pwm |= (1 << 1);
1881                 if (reg & (1 << 2))
1882                         sio_data->skip_fan |= (1 << 1);
1883
1884                 if ((sio_data->type == it8718 || sio_data->type == it8720)
1885                  && !(sio_data->skip_vid))
1886                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1887
1888                 reg = superio_inb(IT87_SIO_PINX2_REG);
1889
1890                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1891
1892                 /*
1893                  * The IT8720F has no VIN7 pin, so VCCH should always be
1894                  * routed internally to VIN7 with an internal divider.
1895                  * Curiously, there still is a configuration bit to control
1896                  * this, which means it can be set incorrectly. And even
1897                  * more curiously, many boards out there are improperly
1898                  * configured, even though the IT8720F datasheet claims
1899                  * that the internal routing of VCCH to VIN7 is the default
1900                  * setting. So we force the internal routing in this case.
1901                  *
1902                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1903                  * If UART6 is enabled, re-route VIN7 to the internal divider
1904                  * if that is not already the case.
1905                  */
1906                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1907                         reg |= (1 << 1);
1908                         superio_outb(IT87_SIO_PINX2_REG, reg);
1909                         pr_notice("Routing internal VCCH to in7\n");
1910                 }
1911                 if (reg & (1 << 0))
1912                         sio_data->internal |= (1 << 0);
1913                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1914                     sio_data->type == it8728 ||
1915                     sio_data->type == it8771 ||
1916                     sio_data->type == it8772)
1917                         sio_data->internal |= (1 << 1);
1918
1919                 /*
1920                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1921                  * While VIN7 can be routed to the internal voltage divider,
1922                  * VIN5 and VIN6 are not available if UART6 is enabled.
1923                  *
1924                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1925                  * is the temperature source. Since we can not read the
1926                  * temperature source here, skip_temp is preliminary.
1927                  */
1928                 if (uart6) {
1929                         sio_data->skip_in |= (1 << 5) | (1 << 6);
1930                         sio_data->skip_temp |= (1 << 2);
1931                 }
1932
1933                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1934         }
1935         if (sio_data->beep_pin)
1936                 pr_info("Beeping is supported\n");
1937
1938         /* Disable specific features based on DMI strings */
1939         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1940         board_name = dmi_get_system_info(DMI_BOARD_NAME);
1941         if (board_vendor && board_name) {
1942                 if (strcmp(board_vendor, "nVIDIA") == 0
1943                  && strcmp(board_name, "FN68PT") == 0) {
1944                         /*
1945                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1946                          * connected to a fan, but to something else. One user
1947                          * has reported instant system power-off when changing
1948                          * the PWM2 duty cycle, so we disable it.
1949                          * I use the board name string as the trigger in case
1950                          * the same board is ever used in other systems.
1951                          */
1952                         pr_info("Disabling pwm2 due to hardware constraints\n");
1953                         sio_data->skip_pwm = (1 << 1);
1954                 }
1955         }
1956
1957 exit:
1958         superio_exit();
1959         return err;
1960 }
1961
1962 static void it87_remove_files(struct device *dev)
1963 {
1964         struct it87_data *data = platform_get_drvdata(pdev);
1965         struct it87_sio_data *sio_data = dev->platform_data;
1966         int i;
1967
1968         sysfs_remove_group(&dev->kobj, &it87_group);
1969         for (i = 0; i < 9; i++) {
1970                 if (sio_data->skip_in & (1 << i))
1971                         continue;
1972                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1973                 if (it87_attributes_in_beep[i])
1974                         sysfs_remove_file(&dev->kobj,
1975                                           it87_attributes_in_beep[i]);
1976         }
1977         for (i = 0; i < 3; i++) {
1978                 if (!(data->has_temp & (1 << i)))
1979                         continue;
1980                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1981                 if (has_temp_offset(data))
1982                         sysfs_remove_file(&dev->kobj,
1983                                           it87_attributes_temp_offset[i]);
1984                 if (sio_data->beep_pin)
1985                         sysfs_remove_file(&dev->kobj,
1986                                           it87_attributes_temp_beep[i]);
1987         }
1988         for (i = 0; i < 5; i++) {
1989                 if (!(data->has_fan & (1 << i)))
1990                         continue;
1991                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1992                 if (sio_data->beep_pin)
1993                         sysfs_remove_file(&dev->kobj,
1994                                           it87_attributes_fan_beep[i]);
1995                 if (i < 3 && !has_16bit_fans(data))
1996                         sysfs_remove_file(&dev->kobj,
1997                                           it87_attributes_fan_div[i]);
1998         }
1999         for (i = 0; i < 3; i++) {
2000                 if (sio_data->skip_pwm & (1 << 0))
2001                         continue;
2002                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2003                 if (has_old_autopwm(data))
2004                         sysfs_remove_group(&dev->kobj,
2005                                            &it87_group_autopwm[i]);
2006         }
2007         if (!sio_data->skip_vid)
2008                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2009         sysfs_remove_group(&dev->kobj, &it87_group_label);
2010 }
2011
2012 static int it87_probe(struct platform_device *pdev)
2013 {
2014         struct it87_data *data;
2015         struct resource *res;
2016         struct device *dev = &pdev->dev;
2017         struct it87_sio_data *sio_data = dev->platform_data;
2018         int err = 0, i;
2019         int enable_pwm_interface;
2020         int fan_beep_need_rw;
2021
2022         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2023         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2024                                  DRVNAME)) {
2025                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2026                         (unsigned long)res->start,
2027                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2028                 return -EBUSY;
2029         }
2030
2031         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2032         if (!data)
2033                 return -ENOMEM;
2034
2035         data->addr = res->start;
2036         data->type = sio_data->type;
2037         data->features = it87_devices[sio_data->type].features;
2038         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2039         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2040         data->name = it87_devices[sio_data->type].name;
2041         /*
2042          * IT8705F Datasheet 0.4.1, 3h == Version G.
2043          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2044          * These are the first revisions with 16-bit tachometer support.
2045          */
2046         switch (data->type) {
2047         case it87:
2048                 if (sio_data->revision >= 0x03) {
2049                         data->features &= ~FEAT_OLD_AUTOPWM;
2050                         data->features |= FEAT_16BIT_FANS;
2051                 }
2052                 break;
2053         case it8712:
2054                 if (sio_data->revision >= 0x08) {
2055                         data->features &= ~FEAT_OLD_AUTOPWM;
2056                         data->features |= FEAT_16BIT_FANS;
2057                 }
2058                 break;
2059         default:
2060                 break;
2061         }
2062
2063         /* Now, we do the remaining detection. */
2064         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2065          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2066                 return -ENODEV;
2067
2068         platform_set_drvdata(pdev, data);
2069
2070         mutex_init(&data->update_lock);
2071
2072         /* Check PWM configuration */
2073         enable_pwm_interface = it87_check_pwm(dev);
2074
2075         /* Starting with IT8721F, we handle scaling of internal voltages */
2076         if (has_12mv_adc(data)) {
2077                 if (sio_data->internal & (1 << 0))
2078                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2079                 if (sio_data->internal & (1 << 1))
2080                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2081                 if (sio_data->internal & (1 << 2))
2082                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2083         } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2084                 if (sio_data->internal & (1 << 0))
2085                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2086                 if (sio_data->internal & (1 << 1))
2087                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2088         }
2089
2090         data->has_temp = 0x07;
2091         if (sio_data->skip_temp & (1 << 2)) {
2092                 if (sio_data->type == it8782
2093                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2094                         data->has_temp &= ~(1 << 2);
2095         }
2096
2097         /* Initialize the IT87 chip */
2098         it87_init_device(pdev);
2099
2100         /* Register sysfs hooks */
2101         err = sysfs_create_group(&dev->kobj, &it87_group);
2102         if (err)
2103                 return err;
2104
2105         for (i = 0; i < 9; i++) {
2106                 if (sio_data->skip_in & (1 << i))
2107                         continue;
2108                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2109                 if (err)
2110                         goto error;
2111                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2112                         err = sysfs_create_file(&dev->kobj,
2113                                                 it87_attributes_in_beep[i]);
2114                         if (err)
2115                                 goto error;
2116                 }
2117         }
2118
2119         for (i = 0; i < 3; i++) {
2120                 if (!(data->has_temp & (1 << i)))
2121                         continue;
2122                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2123                 if (err)
2124                         goto error;
2125                 if (has_temp_offset(data)) {
2126                         err = sysfs_create_file(&dev->kobj,
2127                                                 it87_attributes_temp_offset[i]);
2128                         if (err)
2129                                 goto error;
2130                 }
2131                 if (sio_data->beep_pin) {
2132                         err = sysfs_create_file(&dev->kobj,
2133                                                 it87_attributes_temp_beep[i]);
2134                         if (err)
2135                                 goto error;
2136                 }
2137         }
2138
2139         /* Do not create fan files for disabled fans */
2140         fan_beep_need_rw = 1;
2141         for (i = 0; i < 5; i++) {
2142                 if (!(data->has_fan & (1 << i)))
2143                         continue;
2144                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2145                 if (err)
2146                         goto error;
2147
2148                 if (i < 3 && !has_16bit_fans(data)) {
2149                         err = sysfs_create_file(&dev->kobj,
2150                                                 it87_attributes_fan_div[i]);
2151                         if (err)
2152                                 goto error;
2153                 }
2154
2155                 if (sio_data->beep_pin) {
2156                         err = sysfs_create_file(&dev->kobj,
2157                                                 it87_attributes_fan_beep[i]);
2158                         if (err)
2159                                 goto error;
2160                         if (!fan_beep_need_rw)
2161                                 continue;
2162
2163                         /*
2164                          * As we have a single beep enable bit for all fans,
2165                          * only the first enabled fan has a writable attribute
2166                          * for it.
2167                          */
2168                         if (sysfs_chmod_file(&dev->kobj,
2169                                              it87_attributes_fan_beep[i],
2170                                              S_IRUGO | S_IWUSR))
2171                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2172                                         i + 1);
2173                         fan_beep_need_rw = 0;
2174                 }
2175         }
2176
2177         if (enable_pwm_interface) {
2178                 for (i = 0; i < 3; i++) {
2179                         if (sio_data->skip_pwm & (1 << i))
2180                                 continue;
2181                         err = sysfs_create_group(&dev->kobj,
2182                                                  &it87_group_pwm[i]);
2183                         if (err)
2184                                 goto error;
2185
2186                         if (!has_old_autopwm(data))
2187                                 continue;
2188                         err = sysfs_create_group(&dev->kobj,
2189                                                  &it87_group_autopwm[i]);
2190                         if (err)
2191                                 goto error;
2192                 }
2193         }
2194
2195         if (!sio_data->skip_vid) {
2196                 data->vrm = vid_which_vrm();
2197                 /* VID reading from Super-I/O config space if available */
2198                 data->vid = sio_data->vid_value;
2199                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2200                 if (err)
2201                         goto error;
2202         }
2203
2204         /* Export labels for internal sensors */
2205         for (i = 0; i < 3; i++) {
2206                 if (!(sio_data->internal & (1 << i)))
2207                         continue;
2208                 err = sysfs_create_file(&dev->kobj,
2209                                         it87_attributes_label[i]);
2210                 if (err)
2211                         goto error;
2212         }
2213
2214         data->hwmon_dev = hwmon_device_register(dev);
2215         if (IS_ERR(data->hwmon_dev)) {
2216                 err = PTR_ERR(data->hwmon_dev);
2217                 goto error;
2218         }
2219
2220         return 0;
2221
2222 error:
2223         it87_remove_files(dev);
2224         return err;
2225 }
2226
2227 static int it87_remove(struct platform_device *pdev)
2228 {
2229         struct it87_data *data = platform_get_drvdata(pdev);
2230
2231         hwmon_device_unregister(data->hwmon_dev);
2232         it87_remove_files(&pdev->dev);
2233
2234         return 0;
2235 }
2236
2237 /*
2238  * Must be called with data->update_lock held, except during initialization.
2239  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2240  * would slow down the IT87 access and should not be necessary.
2241  */
2242 static int it87_read_value(struct it87_data *data, u8 reg)
2243 {
2244         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2245         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2246 }
2247
2248 /*
2249  * Must be called with data->update_lock held, except during initialization.
2250  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2251  * would slow down the IT87 access and should not be necessary.
2252  */
2253 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2254 {
2255         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2256         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2257 }
2258
2259 /* Return 1 if and only if the PWM interface is safe to use */
2260 static int it87_check_pwm(struct device *dev)
2261 {
2262         struct it87_data *data = dev_get_drvdata(dev);
2263         /*
2264          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2265          * and polarity set to active low is sign that this is the case so we
2266          * disable pwm control to protect the user.
2267          */
2268         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2269         if ((tmp & 0x87) == 0) {
2270                 if (fix_pwm_polarity) {
2271                         /*
2272                          * The user asks us to attempt a chip reconfiguration.
2273                          * This means switching to active high polarity and
2274                          * inverting all fan speed values.
2275                          */
2276                         int i;
2277                         u8 pwm[3];
2278
2279                         for (i = 0; i < 3; i++)
2280                                 pwm[i] = it87_read_value(data,
2281                                                          IT87_REG_PWM(i));
2282
2283                         /*
2284                          * If any fan is in automatic pwm mode, the polarity
2285                          * might be correct, as suspicious as it seems, so we
2286                          * better don't change anything (but still disable the
2287                          * PWM interface).
2288                          */
2289                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2290                                 dev_info(dev,
2291                                          "Reconfiguring PWM to active high polarity\n");
2292                                 it87_write_value(data, IT87_REG_FAN_CTL,
2293                                                  tmp | 0x87);
2294                                 for (i = 0; i < 3; i++)
2295                                         it87_write_value(data,
2296                                                          IT87_REG_PWM(i),
2297                                                          0x7f & ~pwm[i]);
2298                                 return 1;
2299                         }
2300
2301                         dev_info(dev,
2302                                  "PWM configuration is too broken to be fixed\n");
2303                 }
2304
2305                 dev_info(dev,
2306                          "Detected broken BIOS defaults, disabling PWM interface\n");
2307                 return 0;
2308         } else if (fix_pwm_polarity) {
2309                 dev_info(dev,
2310                          "PWM configuration looks sane, won't touch\n");
2311         }
2312
2313         return 1;
2314 }
2315
2316 /* Called when we have found a new IT87. */
2317 static void it87_init_device(struct platform_device *pdev)
2318 {
2319         struct it87_sio_data *sio_data = pdev->dev.platform_data;
2320         struct it87_data *data = platform_get_drvdata(pdev);
2321         int tmp, i;
2322         u8 mask;
2323
2324         /*
2325          * For each PWM channel:
2326          * - If it is in automatic mode, setting to manual mode should set
2327          *   the fan to full speed by default.
2328          * - If it is in manual mode, we need a mapping to temperature
2329          *   channels to use when later setting to automatic mode later.
2330          *   Use a 1:1 mapping by default (we are clueless.)
2331          * In both cases, the value can (and should) be changed by the user
2332          * prior to switching to a different mode.
2333          * Note that this is no longer needed for the IT8721F and later, as
2334          * these have separate registers for the temperature mapping and the
2335          * manual duty cycle.
2336          */
2337         for (i = 0; i < 3; i++) {
2338                 data->pwm_temp_map[i] = i;
2339                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2340                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2341         }
2342
2343         /*
2344          * Some chips seem to have default value 0xff for all limit
2345          * registers. For low voltage limits it makes no sense and triggers
2346          * alarms, so change to 0 instead. For high temperature limits, it
2347          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2348          * but is still confusing, so change to 127 degrees C.
2349          */
2350         for (i = 0; i < 8; i++) {
2351                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2352                 if (tmp == 0xff)
2353                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2354         }
2355         for (i = 0; i < 3; i++) {
2356                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2357                 if (tmp == 0xff)
2358                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2359         }
2360
2361         /*
2362          * Temperature channels are not forcibly enabled, as they can be
2363          * set to two different sensor types and we can't guess which one
2364          * is correct for a given system. These channels can be enabled at
2365          * run-time through the temp{1-3}_type sysfs accessors if needed.
2366          */
2367
2368         /* Check if voltage monitors are reset manually or by some reason */
2369         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2370         if ((tmp & 0xff) == 0) {
2371                 /* Enable all voltage monitors */
2372                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2373         }
2374
2375         /* Check if tachometers are reset manually or by some reason */
2376         mask = 0x70 & ~(sio_data->skip_fan << 4);
2377         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2378         if ((data->fan_main_ctrl & mask) == 0) {
2379                 /* Enable all fan tachometers */
2380                 data->fan_main_ctrl |= mask;
2381                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2382                                  data->fan_main_ctrl);
2383         }
2384         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2385
2386         /* Set tachometers to 16-bit mode if needed */
2387         if (has_16bit_fans(data)) {
2388                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2389                 if (~tmp & 0x07 & data->has_fan) {
2390                         dev_dbg(&pdev->dev,
2391                                 "Setting fan1-3 to 16-bit mode\n");
2392                         it87_write_value(data, IT87_REG_FAN_16BIT,
2393                                          tmp | 0x07);
2394                 }
2395                 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2396                 if (data->type != it87 && data->type != it8782 &&
2397                     data->type != it8783) {
2398                         if (tmp & (1 << 4))
2399                                 data->has_fan |= (1 << 3); /* fan4 enabled */
2400                         if (tmp & (1 << 5))
2401                                 data->has_fan |= (1 << 4); /* fan5 enabled */
2402                 }
2403         }
2404
2405         /* Fan input pins may be used for alternative functions */
2406         data->has_fan &= ~sio_data->skip_fan;
2407
2408         /* Start monitoring */
2409         it87_write_value(data, IT87_REG_CONFIG,
2410                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2411                          | (update_vbat ? 0x41 : 0x01));
2412 }
2413
2414 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2415 {
2416         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2417         if (has_newer_autopwm(data)) {
2418                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2419                 data->pwm_duty[nr] = it87_read_value(data,
2420                                                      IT87_REG_PWM_DUTY(nr));
2421         } else {
2422                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2423                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2424                 else                            /* Manual mode */
2425                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2426         }
2427
2428         if (has_old_autopwm(data)) {
2429                 int i;
2430
2431                 for (i = 0; i < 5 ; i++)
2432                         data->auto_temp[nr][i] = it87_read_value(data,
2433                                                 IT87_REG_AUTO_TEMP(nr, i));
2434                 for (i = 0; i < 3 ; i++)
2435                         data->auto_pwm[nr][i] = it87_read_value(data,
2436                                                 IT87_REG_AUTO_PWM(nr, i));
2437         }
2438 }
2439
2440 static struct it87_data *it87_update_device(struct device *dev)
2441 {
2442         struct it87_data *data = dev_get_drvdata(dev);
2443         int i;
2444
2445         mutex_lock(&data->update_lock);
2446
2447         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2448             || !data->valid) {
2449                 if (update_vbat) {
2450                         /*
2451                          * Cleared after each update, so reenable.  Value
2452                          * returned by this read will be previous value
2453                          */
2454                         it87_write_value(data, IT87_REG_CONFIG,
2455                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2456                 }
2457                 for (i = 0; i <= 7; i++) {
2458                         data->in[i][0] =
2459                                 it87_read_value(data, IT87_REG_VIN(i));
2460                         data->in[i][1] =
2461                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2462                         data->in[i][2] =
2463                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2464                 }
2465                 /* in8 (battery) has no limit registers */
2466                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2467
2468                 for (i = 0; i < 5; i++) {
2469                         /* Skip disabled fans */
2470                         if (!(data->has_fan & (1 << i)))
2471                                 continue;
2472
2473                         data->fan[i][1] =
2474                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2475                         data->fan[i][0] = it87_read_value(data,
2476                                        IT87_REG_FAN[i]);
2477                         /* Add high byte if in 16-bit mode */
2478                         if (has_16bit_fans(data)) {
2479                                 data->fan[i][0] |= it87_read_value(data,
2480                                                 IT87_REG_FANX[i]) << 8;
2481                                 data->fan[i][1] |= it87_read_value(data,
2482                                                 IT87_REG_FANX_MIN[i]) << 8;
2483                         }
2484                 }
2485                 for (i = 0; i < 3; i++) {
2486                         if (!(data->has_temp & (1 << i)))
2487                                 continue;
2488                         data->temp[i][0] =
2489                                 it87_read_value(data, IT87_REG_TEMP(i));
2490                         data->temp[i][1] =
2491                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2492                         data->temp[i][2] =
2493                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2494                         if (has_temp_offset(data))
2495                                 data->temp[i][3] =
2496                                   it87_read_value(data,
2497                                                   IT87_REG_TEMP_OFFSET[i]);
2498                 }
2499
2500                 /* Newer chips don't have clock dividers */
2501                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2502                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2503                         data->fan_div[0] = i & 0x07;
2504                         data->fan_div[1] = (i >> 3) & 0x07;
2505                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2506                 }
2507
2508                 data->alarms =
2509                         it87_read_value(data, IT87_REG_ALARM1) |
2510                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2511                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2512                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2513
2514                 data->fan_main_ctrl = it87_read_value(data,
2515                                 IT87_REG_FAN_MAIN_CTRL);
2516                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2517                 for (i = 0; i < 3; i++)
2518                         it87_update_pwm_ctrl(data, i);
2519
2520                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2521                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2522                 /*
2523                  * The IT8705F does not have VID capability.
2524                  * The IT8718F and later don't use IT87_REG_VID for the
2525                  * same purpose.
2526                  */
2527                 if (data->type == it8712 || data->type == it8716) {
2528                         data->vid = it87_read_value(data, IT87_REG_VID);
2529                         /*
2530                          * The older IT8712F revisions had only 5 VID pins,
2531                          * but we assume it is always safe to read 6 bits.
2532                          */
2533                         data->vid &= 0x3f;
2534                 }
2535                 data->last_updated = jiffies;
2536                 data->valid = 1;
2537         }
2538
2539         mutex_unlock(&data->update_lock);
2540
2541         return data;
2542 }
2543
2544 static int __init it87_device_add(unsigned short address,
2545                                   const struct it87_sio_data *sio_data)
2546 {
2547         struct resource res = {
2548                 .start  = address + IT87_EC_OFFSET,
2549                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2550                 .name   = DRVNAME,
2551                 .flags  = IORESOURCE_IO,
2552         };
2553         int err;
2554
2555         err = acpi_check_resource_conflict(&res);
2556         if (err)
2557                 goto exit;
2558
2559         pdev = platform_device_alloc(DRVNAME, address);
2560         if (!pdev) {
2561                 err = -ENOMEM;
2562                 pr_err("Device allocation failed\n");
2563                 goto exit;
2564         }
2565
2566         err = platform_device_add_resources(pdev, &res, 1);
2567         if (err) {
2568                 pr_err("Device resource addition failed (%d)\n", err);
2569                 goto exit_device_put;
2570         }
2571
2572         err = platform_device_add_data(pdev, sio_data,
2573                                        sizeof(struct it87_sio_data));
2574         if (err) {
2575                 pr_err("Platform data allocation failed\n");
2576                 goto exit_device_put;
2577         }
2578
2579         err = platform_device_add(pdev);
2580         if (err) {
2581                 pr_err("Device addition failed (%d)\n", err);
2582                 goto exit_device_put;
2583         }
2584
2585         return 0;
2586
2587 exit_device_put:
2588         platform_device_put(pdev);
2589 exit:
2590         return err;
2591 }
2592
2593 static int __init sm_it87_init(void)
2594 {
2595         int err;
2596         unsigned short isa_address = 0;
2597         struct it87_sio_data sio_data;
2598
2599         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2600         err = it87_find(&isa_address, &sio_data);
2601         if (err)
2602                 return err;
2603         err = platform_driver_register(&it87_driver);
2604         if (err)
2605                 return err;
2606
2607         err = it87_device_add(isa_address, &sio_data);
2608         if (err) {
2609                 platform_driver_unregister(&it87_driver);
2610                 return err;
2611         }
2612
2613         return 0;
2614 }
2615
2616 static void __exit sm_it87_exit(void)
2617 {
2618         platform_device_unregister(pdev);
2619         platform_driver_unregister(&it87_driver);
2620 }
2621
2622
2623 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2624 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2625 module_param(update_vbat, bool, 0);
2626 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2627 module_param(fix_pwm_polarity, bool, 0);
2628 MODULE_PARM_DESC(fix_pwm_polarity,
2629                  "Force PWM polarity to active high (DANGEROUS)");
2630 MODULE_LICENSE("GPL");
2631
2632 module_init(sm_it87_init);
2633 module_exit(sm_it87_exit);