2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
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
10 * This driver supports only the Environment Controller in the IT8705F and
11 * similar parts. The other devices are supported by different drivers.
13 * Supports: IT8603E Super I/O chip w/LPC interface
14 * IT8620E Super I/O chip w/LPC interface
15 * IT8622E Super I/O chip w/LPC interface
16 * IT8623E Super I/O chip w/LPC interface
17 * IT8628E Super I/O chip w/LPC interface
18 * IT8705F Super I/O chip w/LPC interface
19 * IT8712F Super I/O chip w/LPC interface
20 * IT8716F Super I/O chip w/LPC interface
21 * IT8718F Super I/O chip w/LPC interface
22 * IT8720F Super I/O chip w/LPC interface
23 * IT8721F Super I/O chip w/LPC interface
24 * IT8726F Super I/O chip w/LPC interface
25 * IT8728F Super I/O chip w/LPC interface
26 * IT8732F Super I/O chip w/LPC interface
27 * IT8758E Super I/O chip w/LPC interface
28 * IT8771E Super I/O chip w/LPC interface
29 * IT8772E Super I/O chip w/LPC interface
30 * IT8781F Super I/O chip w/LPC interface
31 * IT8782F Super I/O chip w/LPC interface
32 * IT8783E/F Super I/O chip w/LPC interface
33 * IT8786E Super I/O chip w/LPC interface
34 * IT8790E Super I/O chip w/LPC interface
35 * Sis950 A clone of the IT8705F
37 * Copyright (C) 2001 Chris Gauthron
38 * Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
40 * This program is free software; you can redistribute it and/or modify
41 * it under the terms of the GNU General Public License as published by
42 * the Free Software Foundation; either version 2 of the License, or
43 * (at your option) any later version.
45 * This program is distributed in the hope that it will be useful,
46 * but WITHOUT ANY WARRANTY; without even the implied warranty of
47 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
48 * GNU General Public License for more details.
51 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
53 #include <linux/bitops.h>
54 #include <linux/module.h>
55 #include <linux/init.h>
56 #include <linux/slab.h>
57 #include <linux/jiffies.h>
58 #include <linux/platform_device.h>
59 #include <linux/hwmon.h>
60 #include <linux/hwmon-sysfs.h>
61 #include <linux/hwmon-vid.h>
62 #include <linux/err.h>
63 #include <linux/mutex.h>
64 #include <linux/sysfs.h>
65 #include <linux/string.h>
66 #include <linux/dmi.h>
67 #include <linux/acpi.h>
70 #define DRVNAME "it87"
72 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
73 it8771, it8772, it8781, it8782, it8783, it8786, it8790, it8603,
74 it8620, it8622, it8628 };
76 static unsigned short force_id;
77 module_param(force_id, ushort, 0);
78 MODULE_PARM_DESC(force_id, "Override the detected device ID");
80 static struct platform_device *it87_pdev[2];
82 #define REG_2E 0x2e /* The register to read/write */
83 #define REG_4E 0x4e /* Secondary register to read/write */
85 #define DEV 0x07 /* Register: Logical device select */
86 #define PME 0x04 /* The device with the fan registers in it */
88 /* The device with the IT8718F/IT8720F VID value in it */
91 #define DEVID 0x20 /* Register: Device ID */
92 #define DEVREV 0x22 /* Register: Device Revision */
94 static inline int superio_inb(int ioreg, int reg)
97 return inb(ioreg + 1);
100 static inline void superio_outb(int ioreg, int reg, int val)
103 outb(val, ioreg + 1);
106 static int superio_inw(int ioreg, int reg)
111 val = inb(ioreg + 1) << 8;
113 val |= inb(ioreg + 1);
117 static inline void superio_select(int ioreg, int ldn)
120 outb(ldn, ioreg + 1);
123 static inline int superio_enter(int ioreg)
126 * Try to reserve ioreg and ioreg + 1 for exclusive access.
128 if (!request_muxed_region(ioreg, 2, DRVNAME))
134 outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg);
138 static inline void superio_exit(int ioreg)
141 outb(0x02, ioreg + 1);
142 release_region(ioreg, 2);
145 /* Logical device 4 registers */
146 #define IT8712F_DEVID 0x8712
147 #define IT8705F_DEVID 0x8705
148 #define IT8716F_DEVID 0x8716
149 #define IT8718F_DEVID 0x8718
150 #define IT8720F_DEVID 0x8720
151 #define IT8721F_DEVID 0x8721
152 #define IT8726F_DEVID 0x8726
153 #define IT8728F_DEVID 0x8728
154 #define IT8732F_DEVID 0x8732
155 #define IT8771E_DEVID 0x8771
156 #define IT8772E_DEVID 0x8772
157 #define IT8781F_DEVID 0x8781
158 #define IT8782F_DEVID 0x8782
159 #define IT8783E_DEVID 0x8783
160 #define IT8786E_DEVID 0x8786
161 #define IT8790E_DEVID 0x8790
162 #define IT8603E_DEVID 0x8603
163 #define IT8620E_DEVID 0x8620
164 #define IT8622E_DEVID 0x8622
165 #define IT8623E_DEVID 0x8623
166 #define IT8628E_DEVID 0x8628
167 #define IT87_ACT_REG 0x30
168 #define IT87_BASE_REG 0x60
170 /* Logical device 7 registers (IT8712F and later) */
171 #define IT87_SIO_GPIO1_REG 0x25
172 #define IT87_SIO_GPIO2_REG 0x26
173 #define IT87_SIO_GPIO3_REG 0x27
174 #define IT87_SIO_GPIO4_REG 0x28
175 #define IT87_SIO_GPIO5_REG 0x29
176 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
177 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
178 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
179 #define IT87_SIO_VID_REG 0xfc /* VID value */
180 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
182 /* Update battery voltage after every reading if true */
183 static bool update_vbat;
185 /* Not all BIOSes properly configure the PWM registers */
186 static bool fix_pwm_polarity;
188 /* Many IT87 constants specified below */
190 /* Length of ISA address segment */
191 #define IT87_EXTENT 8
193 /* Length of ISA address segment for Environmental Controller */
194 #define IT87_EC_EXTENT 2
196 /* Offset of EC registers from ISA base address */
197 #define IT87_EC_OFFSET 5
199 /* Where are the ISA address/data registers relative to the EC base address */
200 #define IT87_ADDR_REG_OFFSET 0
201 #define IT87_DATA_REG_OFFSET 1
203 /*----- The IT87 registers -----*/
205 #define IT87_REG_CONFIG 0x00
207 #define IT87_REG_ALARM1 0x01
208 #define IT87_REG_ALARM2 0x02
209 #define IT87_REG_ALARM3 0x03
212 * The IT8718F and IT8720F have the VID value in a different register, in
213 * Super-I/O configuration space.
215 #define IT87_REG_VID 0x0a
217 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
218 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
221 #define IT87_REG_FAN_DIV 0x0b
222 #define IT87_REG_FAN_16BIT 0x0c
226 * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
227 * - up to 6 temp (1 to 6)
228 * - up to 6 fan (1 to 6)
231 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
232 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
233 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
234 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
235 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
237 #define IT87_REG_FAN_MAIN_CTRL 0x13
238 #define IT87_REG_FAN_CTL 0x14
239 static const u8 IT87_REG_PWM[] = { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
240 static const u8 IT87_REG_PWM_DUTY[] = { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
242 static const u8 IT87_REG_VIN[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
243 0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
245 #define IT87_REG_TEMP(nr) (0x29 + (nr))
247 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
248 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
249 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
250 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
252 #define IT87_REG_VIN_ENABLE 0x50
253 #define IT87_REG_TEMP_ENABLE 0x51
254 #define IT87_REG_TEMP_EXTRA 0x55
255 #define IT87_REG_BEEP_ENABLE 0x5c
257 #define IT87_REG_CHIPID 0x58
259 static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
261 #define IT87_REG_AUTO_TEMP(nr, i) (IT87_REG_AUTO_BASE[nr] + (i))
262 #define IT87_REG_AUTO_PWM(nr, i) (IT87_REG_AUTO_BASE[nr] + 5 + (i))
264 #define IT87_REG_TEMP456_ENABLE 0x77
266 #define NUM_VIN ARRAY_SIZE(IT87_REG_VIN)
267 #define NUM_VIN_LIMIT 8
269 #define NUM_TEMP_OFFSET ARRAY_SIZE(IT87_REG_TEMP_OFFSET)
270 #define NUM_TEMP_LIMIT 3
271 #define NUM_FAN ARRAY_SIZE(IT87_REG_FAN)
272 #define NUM_FAN_DIV 3
273 #define NUM_PWM ARRAY_SIZE(IT87_REG_PWM)
274 #define NUM_AUTO_PWM ARRAY_SIZE(IT87_REG_PWM)
276 struct it87_devices {
278 const char * const suffix;
284 #define FEAT_12MV_ADC BIT(0)
285 #define FEAT_NEWER_AUTOPWM BIT(1)
286 #define FEAT_OLD_AUTOPWM BIT(2)
287 #define FEAT_16BIT_FANS BIT(3)
288 #define FEAT_TEMP_OFFSET BIT(4)
289 #define FEAT_TEMP_PECI BIT(5)
290 #define FEAT_TEMP_OLD_PECI BIT(6)
291 #define FEAT_FAN16_CONFIG BIT(7) /* Need to enable 16-bit fans */
292 #define FEAT_FIVE_FANS BIT(8) /* Supports five fans */
293 #define FEAT_VID BIT(9) /* Set if chip supports VID */
294 #define FEAT_IN7_INTERNAL BIT(10) /* Set if in7 is internal */
295 #define FEAT_SIX_FANS BIT(11) /* Supports six fans */
296 #define FEAT_10_9MV_ADC BIT(12)
297 #define FEAT_AVCC3 BIT(13) /* Chip supports in9/AVCC3 */
298 #define FEAT_FIVE_PWM BIT(14) /* Chip supports 5 pwm chn */
299 #define FEAT_SIX_PWM BIT(15) /* Chip supports 6 pwm chn */
300 #define FEAT_PWM_FREQ2 BIT(16) /* Separate pwm freq 2 */
301 #define FEAT_SIX_TEMP BIT(17) /* Up to 6 temp sensors */
302 #define FEAT_VIN3_5V BIT(18) /* VIN3 connected to +5V */
304 static const struct it87_devices it87_devices[] = {
308 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
313 .features = FEAT_OLD_AUTOPWM | FEAT_VID,
314 /* may need to overwrite */
319 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
320 | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2,
325 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
326 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
328 .old_peci_mask = 0x4,
333 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
334 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
336 .old_peci_mask = 0x4,
341 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
342 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
343 | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
346 .old_peci_mask = 0x02, /* Actually reports PCH */
351 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
352 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
353 | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2,
359 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
360 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
361 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
363 .old_peci_mask = 0x02, /* Actually reports PCH */
368 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
369 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
371 /* PECI: guesswork */
373 /* 16 bit fans (OHM) */
374 /* three fans, always 16 bit (guesswork) */
380 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
381 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
383 /* PECI (coreboot) */
384 /* 12mV ADC (HWSensors4, OHM) */
385 /* 16 bit fans (HWSensors4, OHM) */
386 /* three fans, always 16 bit (datasheet) */
392 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
393 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
394 .old_peci_mask = 0x4,
399 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
400 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
401 .old_peci_mask = 0x4,
406 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
407 | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
408 .old_peci_mask = 0x4,
413 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
414 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
421 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
422 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
429 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
430 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
431 | FEAT_AVCC3 | FEAT_PWM_FREQ2,
437 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
438 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
439 | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
440 | FEAT_SIX_TEMP | FEAT_VIN3_5V,
446 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
447 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
448 | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
449 | FEAT_AVCC3 | FEAT_VIN3_5V,
455 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
456 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
457 | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
458 | FEAT_SIX_TEMP | FEAT_VIN3_5V,
463 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
464 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
465 #define has_10_9mv_adc(data) ((data)->features & FEAT_10_9MV_ADC)
466 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
467 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
468 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
469 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
470 ((data)->peci_mask & BIT(nr)))
471 #define has_temp_old_peci(data, nr) \
472 (((data)->features & FEAT_TEMP_OLD_PECI) && \
473 ((data)->old_peci_mask & BIT(nr)))
474 #define has_fan16_config(data) ((data)->features & FEAT_FAN16_CONFIG)
475 #define has_five_fans(data) ((data)->features & (FEAT_FIVE_FANS | \
477 #define has_vid(data) ((data)->features & FEAT_VID)
478 #define has_in7_internal(data) ((data)->features & FEAT_IN7_INTERNAL)
479 #define has_six_fans(data) ((data)->features & FEAT_SIX_FANS)
480 #define has_avcc3(data) ((data)->features & FEAT_AVCC3)
481 #define has_five_pwm(data) ((data)->features & (FEAT_FIVE_PWM \
483 #define has_six_pwm(data) ((data)->features & FEAT_SIX_PWM)
484 #define has_pwm_freq2(data) ((data)->features & FEAT_PWM_FREQ2)
485 #define has_six_temp(data) ((data)->features & FEAT_SIX_TEMP)
486 #define has_vin3_5v(data) ((data)->features & FEAT_VIN3_5V)
488 struct it87_sio_data {
490 /* Values read from Super-I/O config space */
494 u8 internal; /* Internal sensors can be labeled */
495 /* Features skipped based on config or DMI */
504 * For each registered chip, we need to keep some data in memory.
505 * The structure is dynamically allocated.
508 const struct attribute_group *groups[7];
516 struct mutex update_lock;
517 char valid; /* !=0 if following fields are valid */
518 unsigned long last_updated; /* In jiffies */
520 u16 in_scaled; /* Internal voltage sensors are scaled */
521 u16 in_internal; /* Bitfield, internal sensors (for labels) */
522 u16 has_in; /* Bitfield, voltage sensors enabled */
523 u8 in[NUM_VIN][3]; /* [nr][0]=in, [1]=min, [2]=max */
524 u8 has_fan; /* Bitfield, fans enabled */
525 u16 fan[NUM_FAN][2]; /* Register values, [nr][0]=fan, [1]=min */
526 u8 has_temp; /* Bitfield, temp sensors enabled */
527 s8 temp[NUM_TEMP][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
528 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */
529 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */
530 u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
531 bool has_vid; /* True if VID supported */
532 u8 vid; /* Register encoding, combined */
534 u32 alarms; /* Register encoding, combined */
535 bool has_beep; /* true if beep supported */
536 u8 beeps; /* Register encoding */
537 u8 fan_main_ctrl; /* Register value */
538 u8 fan_ctl; /* Register value */
541 * The following 3 arrays correspond to the same registers up to
542 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
543 * 7, and we want to preserve settings on mode changes, so we have
544 * to track all values separately.
545 * Starting with the IT8721F, the manual PWM duty cycles are stored
546 * in separate registers (8-bit values), so the separate tracking
547 * is no longer needed, but it is still done to keep the driver
550 u8 has_pwm; /* Bitfield, pwm control enabled */
551 u8 pwm_ctrl[NUM_PWM]; /* Register value */
552 u8 pwm_duty[NUM_PWM]; /* Manual PWM value set by user */
553 u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
555 /* Automatic fan speed control registers */
556 u8 auto_pwm[NUM_AUTO_PWM][4]; /* [nr][3] is hard-coded */
557 s8 auto_temp[NUM_AUTO_PWM][5]; /* [nr][0] is point1_temp_hyst */
560 static int adc_lsb(const struct it87_data *data, int nr)
564 if (has_12mv_adc(data))
566 else if (has_10_9mv_adc(data))
570 if (data->in_scaled & BIT(nr))
575 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
577 val = DIV_ROUND_CLOSEST(val * 10, adc_lsb(data, nr));
578 return clamp_val(val, 0, 255);
581 static int in_from_reg(const struct it87_data *data, int nr, int val)
583 return DIV_ROUND_CLOSEST(val * adc_lsb(data, nr), 10);
586 static inline u8 FAN_TO_REG(long rpm, int div)
590 rpm = clamp_val(rpm, 1, 1000000);
591 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
594 static inline u16 FAN16_TO_REG(long rpm)
598 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
601 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
602 1350000 / ((val) * (div)))
603 /* The divider is fixed to 2 in 16-bit mode */
604 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
605 1350000 / ((val) * 2))
607 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
608 ((val) + 500) / 1000), -128, 127))
609 #define TEMP_FROM_REG(val) ((val) * 1000)
611 static u8 pwm_to_reg(const struct it87_data *data, long val)
613 if (has_newer_autopwm(data))
619 static int pwm_from_reg(const struct it87_data *data, u8 reg)
621 if (has_newer_autopwm(data))
624 return (reg & 0x7f) << 1;
627 static int DIV_TO_REG(int val)
631 while (answer < 7 && (val >>= 1))
636 #define DIV_FROM_REG(val) BIT(val)
639 * PWM base frequencies. The frequency has to be divided by either 128 or 256,
640 * depending on the chip type, to calculate the actual PWM frequency.
642 * Some of the chip datasheets suggest a base frequency of 51 kHz instead
643 * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
644 * of 200 Hz. Sometimes both PWM frequency select registers are affected,
645 * sometimes just one. It is unknown if this is a datasheet error or real,
646 * so this is ignored for now.
648 static const unsigned int pwm_freq[8] = {
660 * Must be called with data->update_lock held, except during initialization.
661 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
662 * would slow down the IT87 access and should not be necessary.
664 static int it87_read_value(struct it87_data *data, u8 reg)
666 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
667 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
671 * Must be called with data->update_lock held, except during initialization.
672 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
673 * would slow down the IT87 access and should not be necessary.
675 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
677 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
678 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
681 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
683 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
684 if (has_newer_autopwm(data)) {
685 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
686 data->pwm_duty[nr] = it87_read_value(data,
687 IT87_REG_PWM_DUTY[nr]);
689 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
690 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
691 else /* Manual mode */
692 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
695 if (has_old_autopwm(data)) {
698 for (i = 0; i < 5 ; i++)
699 data->auto_temp[nr][i] = it87_read_value(data,
700 IT87_REG_AUTO_TEMP(nr, i));
701 for (i = 0; i < 3 ; i++)
702 data->auto_pwm[nr][i] = it87_read_value(data,
703 IT87_REG_AUTO_PWM(nr, i));
704 } else if (has_newer_autopwm(data)) {
708 * 0: temperature hysteresis (base + 5)
709 * 1: fan off temperature (base + 0)
710 * 2: fan start temperature (base + 1)
711 * 3: fan max temperature (base + 2)
713 data->auto_temp[nr][0] =
714 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
716 for (i = 0; i < 3 ; i++)
717 data->auto_temp[nr][i + 1] =
718 it87_read_value(data,
719 IT87_REG_AUTO_TEMP(nr, i));
721 * 0: start pwm value (base + 3)
722 * 1: pwm slope (base + 4, 1/8th pwm)
724 data->auto_pwm[nr][0] =
725 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
726 data->auto_pwm[nr][1] =
727 it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
731 static struct it87_data *it87_update_device(struct device *dev)
733 struct it87_data *data = dev_get_drvdata(dev);
736 mutex_lock(&data->update_lock);
738 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
742 * Cleared after each update, so reenable. Value
743 * returned by this read will be previous value
745 it87_write_value(data, IT87_REG_CONFIG,
746 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
748 for (i = 0; i < NUM_VIN; i++) {
749 if (!(data->has_in & BIT(i)))
753 it87_read_value(data, IT87_REG_VIN[i]);
755 /* VBAT and AVCC don't have limit registers */
756 if (i >= NUM_VIN_LIMIT)
760 it87_read_value(data, IT87_REG_VIN_MIN(i));
762 it87_read_value(data, IT87_REG_VIN_MAX(i));
765 for (i = 0; i < NUM_FAN; i++) {
766 /* Skip disabled fans */
767 if (!(data->has_fan & BIT(i)))
771 it87_read_value(data, IT87_REG_FAN_MIN[i]);
772 data->fan[i][0] = it87_read_value(data,
774 /* Add high byte if in 16-bit mode */
775 if (has_16bit_fans(data)) {
776 data->fan[i][0] |= it87_read_value(data,
777 IT87_REG_FANX[i]) << 8;
778 data->fan[i][1] |= it87_read_value(data,
779 IT87_REG_FANX_MIN[i]) << 8;
782 for (i = 0; i < NUM_TEMP; i++) {
783 if (!(data->has_temp & BIT(i)))
786 it87_read_value(data, IT87_REG_TEMP(i));
788 if (has_temp_offset(data) && i < NUM_TEMP_OFFSET)
790 it87_read_value(data,
791 IT87_REG_TEMP_OFFSET[i]);
793 if (i >= NUM_TEMP_LIMIT)
797 it87_read_value(data, IT87_REG_TEMP_LOW(i));
799 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
802 /* Newer chips don't have clock dividers */
803 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
804 i = it87_read_value(data, IT87_REG_FAN_DIV);
805 data->fan_div[0] = i & 0x07;
806 data->fan_div[1] = (i >> 3) & 0x07;
807 data->fan_div[2] = (i & 0x40) ? 3 : 1;
811 it87_read_value(data, IT87_REG_ALARM1) |
812 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
813 (it87_read_value(data, IT87_REG_ALARM3) << 16);
814 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
816 data->fan_main_ctrl = it87_read_value(data,
817 IT87_REG_FAN_MAIN_CTRL);
818 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
819 for (i = 0; i < NUM_PWM; i++) {
820 if (!(data->has_pwm & BIT(i)))
822 it87_update_pwm_ctrl(data, i);
825 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
826 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
828 * The IT8705F does not have VID capability.
829 * The IT8718F and later don't use IT87_REG_VID for the
832 if (data->type == it8712 || data->type == it8716) {
833 data->vid = it87_read_value(data, IT87_REG_VID);
835 * The older IT8712F revisions had only 5 VID pins,
836 * but we assume it is always safe to read 6 bits.
840 data->last_updated = jiffies;
844 mutex_unlock(&data->update_lock);
849 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
852 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
853 struct it87_data *data = it87_update_device(dev);
854 int index = sattr->index;
857 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
860 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
861 const char *buf, size_t count)
863 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
864 struct it87_data *data = dev_get_drvdata(dev);
865 int index = sattr->index;
869 if (kstrtoul(buf, 10, &val) < 0)
872 mutex_lock(&data->update_lock);
873 data->in[nr][index] = in_to_reg(data, nr, val);
874 it87_write_value(data,
875 index == 1 ? IT87_REG_VIN_MIN(nr)
876 : IT87_REG_VIN_MAX(nr),
877 data->in[nr][index]);
878 mutex_unlock(&data->update_lock);
882 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
883 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
885 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
888 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
889 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
891 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
894 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
895 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
897 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
900 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
901 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
903 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
906 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
907 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
909 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
912 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
913 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
915 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
918 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
919 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
921 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
924 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
925 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
927 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
930 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
931 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
932 static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
933 static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
934 static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
936 /* Up to 6 temperatures */
937 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
940 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
942 int index = sattr->index;
943 struct it87_data *data = it87_update_device(dev);
945 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
948 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
949 const char *buf, size_t count)
951 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
953 int index = sattr->index;
954 struct it87_data *data = dev_get_drvdata(dev);
958 if (kstrtol(buf, 10, &val) < 0)
961 mutex_lock(&data->update_lock);
966 reg = IT87_REG_TEMP_LOW(nr);
969 reg = IT87_REG_TEMP_HIGH(nr);
972 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
973 if (!(regval & 0x80)) {
975 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
978 reg = IT87_REG_TEMP_OFFSET[nr];
982 data->temp[nr][index] = TEMP_TO_REG(val);
983 it87_write_value(data, reg, data->temp[nr][index]);
984 mutex_unlock(&data->update_lock);
988 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
989 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
991 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
993 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
995 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
996 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
998 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1000 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1002 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
1003 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1005 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1007 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1009 static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
1010 static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
1011 static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
1013 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
1016 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1017 int nr = sensor_attr->index;
1018 struct it87_data *data = it87_update_device(dev);
1019 u8 reg = data->sensor; /* In case value is updated while used */
1020 u8 extra = data->extra;
1022 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) ||
1023 (has_temp_old_peci(data, nr) && (extra & 0x80)))
1024 return sprintf(buf, "6\n"); /* Intel PECI */
1025 if (reg & (1 << nr))
1026 return sprintf(buf, "3\n"); /* thermal diode */
1027 if (reg & (8 << nr))
1028 return sprintf(buf, "4\n"); /* thermistor */
1029 return sprintf(buf, "0\n"); /* disabled */
1032 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
1033 const char *buf, size_t count)
1035 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1036 int nr = sensor_attr->index;
1038 struct it87_data *data = dev_get_drvdata(dev);
1042 if (kstrtol(buf, 10, &val) < 0)
1045 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1048 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
1050 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1051 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
1053 if (val == 2) { /* backwards compatibility */
1055 "Sensor type 2 is deprecated, please use 4 instead\n");
1058 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
1063 else if (has_temp_peci(data, nr) && val == 6)
1064 reg |= (nr + 1) << 6;
1065 else if (has_temp_old_peci(data, nr) && val == 6)
1070 mutex_lock(&data->update_lock);
1072 data->extra = extra;
1073 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
1074 if (has_temp_old_peci(data, nr))
1075 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1076 data->valid = 0; /* Force cache refresh */
1077 mutex_unlock(&data->update_lock);
1081 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
1083 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
1085 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
1090 static int pwm_mode(const struct it87_data *data, int nr)
1092 if (data->type != it8603 && nr < 3 && !(data->fan_main_ctrl & BIT(nr)))
1093 return 0; /* Full speed */
1094 if (data->pwm_ctrl[nr] & 0x80)
1095 return 2; /* Automatic mode */
1096 if ((data->type == it8603 || nr >= 3) &&
1097 data->pwm_duty[nr] == pwm_to_reg(data, 0xff))
1098 return 0; /* Full speed */
1100 return 1; /* Manual mode */
1103 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1106 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1108 int index = sattr->index;
1110 struct it87_data *data = it87_update_device(dev);
1112 speed = has_16bit_fans(data) ?
1113 FAN16_FROM_REG(data->fan[nr][index]) :
1114 FAN_FROM_REG(data->fan[nr][index],
1115 DIV_FROM_REG(data->fan_div[nr]));
1116 return sprintf(buf, "%d\n", speed);
1119 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
1122 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1123 struct it87_data *data = it87_update_device(dev);
1124 int nr = sensor_attr->index;
1126 return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
1129 static ssize_t show_pwm_enable(struct device *dev,
1130 struct device_attribute *attr, char *buf)
1132 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1133 struct it87_data *data = it87_update_device(dev);
1134 int nr = sensor_attr->index;
1136 return sprintf(buf, "%d\n", pwm_mode(data, nr));
1139 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1142 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1143 struct it87_data *data = it87_update_device(dev);
1144 int nr = sensor_attr->index;
1146 return sprintf(buf, "%d\n",
1147 pwm_from_reg(data, data->pwm_duty[nr]));
1150 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
1153 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1154 struct it87_data *data = it87_update_device(dev);
1155 int nr = sensor_attr->index;
1159 if (has_pwm_freq2(data) && nr == 1)
1160 index = (data->extra >> 4) & 0x07;
1162 index = (data->fan_ctl >> 4) & 0x07;
1164 freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
1166 return sprintf(buf, "%u\n", freq);
1169 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1170 const char *buf, size_t count)
1172 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1174 int index = sattr->index;
1176 struct it87_data *data = dev_get_drvdata(dev);
1180 if (kstrtol(buf, 10, &val) < 0)
1183 mutex_lock(&data->update_lock);
1185 if (has_16bit_fans(data)) {
1186 data->fan[nr][index] = FAN16_TO_REG(val);
1187 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1188 data->fan[nr][index] & 0xff);
1189 it87_write_value(data, IT87_REG_FANX_MIN[nr],
1190 data->fan[nr][index] >> 8);
1192 reg = it87_read_value(data, IT87_REG_FAN_DIV);
1195 data->fan_div[nr] = reg & 0x07;
1198 data->fan_div[nr] = (reg >> 3) & 0x07;
1201 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
1204 data->fan[nr][index] =
1205 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
1206 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1207 data->fan[nr][index]);
1210 mutex_unlock(&data->update_lock);
1214 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
1215 const char *buf, size_t count)
1217 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1218 struct it87_data *data = dev_get_drvdata(dev);
1219 int nr = sensor_attr->index;
1224 if (kstrtoul(buf, 10, &val) < 0)
1227 mutex_lock(&data->update_lock);
1228 old = it87_read_value(data, IT87_REG_FAN_DIV);
1230 /* Save fan min limit */
1231 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
1236 data->fan_div[nr] = DIV_TO_REG(val);
1240 data->fan_div[nr] = 1;
1242 data->fan_div[nr] = 3;
1245 val |= (data->fan_div[0] & 0x07);
1246 val |= (data->fan_div[1] & 0x07) << 3;
1247 if (data->fan_div[2] == 3)
1249 it87_write_value(data, IT87_REG_FAN_DIV, val);
1251 /* Restore fan min limit */
1252 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
1253 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
1255 mutex_unlock(&data->update_lock);
1259 /* Returns 0 if OK, -EINVAL otherwise */
1260 static int check_trip_points(struct device *dev, int nr)
1262 const struct it87_data *data = dev_get_drvdata(dev);
1265 if (has_old_autopwm(data)) {
1266 for (i = 0; i < 3; i++) {
1267 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1270 for (i = 0; i < 2; i++) {
1271 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1274 } else if (has_newer_autopwm(data)) {
1275 for (i = 1; i < 3; i++) {
1276 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1283 "Inconsistent trip points, not switching to automatic mode\n");
1284 dev_err(dev, "Adjust the trip points and try again\n");
1289 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1290 const char *buf, size_t count)
1292 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1293 struct it87_data *data = dev_get_drvdata(dev);
1294 int nr = sensor_attr->index;
1297 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1300 /* Check trip points before switching to automatic mode */
1302 if (check_trip_points(dev, nr) < 0)
1306 mutex_lock(&data->update_lock);
1309 if (nr < 3 && data->type != it8603) {
1311 /* make sure the fan is on when in on/off mode */
1312 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1313 it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
1314 /* set on/off mode */
1315 data->fan_main_ctrl &= ~BIT(nr);
1316 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1317 data->fan_main_ctrl);
1319 /* No on/off mode, set maximum pwm value */
1320 data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
1321 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1322 data->pwm_duty[nr]);
1323 /* and set manual mode */
1324 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
1325 data->pwm_temp_map[nr] :
1327 it87_write_value(data, IT87_REG_PWM[nr],
1328 data->pwm_ctrl[nr]);
1331 if (val == 1) /* Manual mode */
1332 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
1333 data->pwm_temp_map[nr] :
1335 else /* Automatic mode */
1336 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1337 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1339 if (data->type != it8603 && nr < 3) {
1340 /* set SmartGuardian mode */
1341 data->fan_main_ctrl |= BIT(nr);
1342 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1343 data->fan_main_ctrl);
1347 mutex_unlock(&data->update_lock);
1351 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1352 const char *buf, size_t count)
1354 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1355 struct it87_data *data = dev_get_drvdata(dev);
1356 int nr = sensor_attr->index;
1359 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1362 mutex_lock(&data->update_lock);
1363 if (has_newer_autopwm(data)) {
1365 * If we are in automatic mode, the PWM duty cycle register
1366 * is read-only so we can't write the value.
1368 if (data->pwm_ctrl[nr] & 0x80) {
1369 mutex_unlock(&data->update_lock);
1372 data->pwm_duty[nr] = pwm_to_reg(data, val);
1373 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1374 data->pwm_duty[nr]);
1376 data->pwm_duty[nr] = pwm_to_reg(data, val);
1378 * If we are in manual mode, write the duty cycle immediately;
1379 * otherwise, just store it for later use.
1381 if (!(data->pwm_ctrl[nr] & 0x80)) {
1382 data->pwm_ctrl[nr] = data->pwm_duty[nr];
1383 it87_write_value(data, IT87_REG_PWM[nr],
1384 data->pwm_ctrl[nr]);
1387 mutex_unlock(&data->update_lock);
1391 static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
1392 const char *buf, size_t count)
1394 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1395 struct it87_data *data = dev_get_drvdata(dev);
1396 int nr = sensor_attr->index;
1400 if (kstrtoul(buf, 10, &val) < 0)
1403 val = clamp_val(val, 0, 1000000);
1404 val *= has_newer_autopwm(data) ? 256 : 128;
1406 /* Search for the nearest available frequency */
1407 for (i = 0; i < 7; i++) {
1408 if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
1412 mutex_lock(&data->update_lock);
1414 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1415 data->fan_ctl |= i << 4;
1416 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1418 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1419 data->extra |= i << 4;
1420 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1422 mutex_unlock(&data->update_lock);
1427 static ssize_t show_pwm_temp_map(struct device *dev,
1428 struct device_attribute *attr, char *buf)
1430 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1431 struct it87_data *data = it87_update_device(dev);
1432 int nr = sensor_attr->index;
1435 map = data->pwm_temp_map[nr];
1437 map = 0; /* Should never happen */
1438 if (nr >= 3) /* pwm channels 3..6 map to temp4..6 */
1441 return sprintf(buf, "%d\n", (int)BIT(map));
1444 static ssize_t set_pwm_temp_map(struct device *dev,
1445 struct device_attribute *attr, const char *buf,
1448 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1449 struct it87_data *data = dev_get_drvdata(dev);
1450 int nr = sensor_attr->index;
1454 if (kstrtol(buf, 10, &val) < 0)
1474 mutex_lock(&data->update_lock);
1475 data->pwm_temp_map[nr] = reg;
1477 * If we are in automatic mode, write the temp mapping immediately;
1478 * otherwise, just store it for later use.
1480 if (data->pwm_ctrl[nr] & 0x80) {
1481 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1482 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1484 mutex_unlock(&data->update_lock);
1488 static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
1491 struct it87_data *data = it87_update_device(dev);
1492 struct sensor_device_attribute_2 *sensor_attr =
1493 to_sensor_dev_attr_2(attr);
1494 int nr = sensor_attr->nr;
1495 int point = sensor_attr->index;
1497 return sprintf(buf, "%d\n",
1498 pwm_from_reg(data, data->auto_pwm[nr][point]));
1501 static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
1502 const char *buf, size_t count)
1504 struct it87_data *data = dev_get_drvdata(dev);
1505 struct sensor_device_attribute_2 *sensor_attr =
1506 to_sensor_dev_attr_2(attr);
1507 int nr = sensor_attr->nr;
1508 int point = sensor_attr->index;
1512 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1515 mutex_lock(&data->update_lock);
1516 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1517 if (has_newer_autopwm(data))
1518 regaddr = IT87_REG_AUTO_TEMP(nr, 3);
1520 regaddr = IT87_REG_AUTO_PWM(nr, point);
1521 it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
1522 mutex_unlock(&data->update_lock);
1526 static ssize_t show_auto_pwm_slope(struct device *dev,
1527 struct device_attribute *attr, char *buf)
1529 struct it87_data *data = it87_update_device(dev);
1530 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1531 int nr = sensor_attr->index;
1533 return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
1536 static ssize_t set_auto_pwm_slope(struct device *dev,
1537 struct device_attribute *attr,
1538 const char *buf, size_t count)
1540 struct it87_data *data = dev_get_drvdata(dev);
1541 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1542 int nr = sensor_attr->index;
1545 if (kstrtoul(buf, 10, &val) < 0 || val > 127)
1548 mutex_lock(&data->update_lock);
1549 data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
1550 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
1551 data->auto_pwm[nr][1]);
1552 mutex_unlock(&data->update_lock);
1556 static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
1559 struct it87_data *data = it87_update_device(dev);
1560 struct sensor_device_attribute_2 *sensor_attr =
1561 to_sensor_dev_attr_2(attr);
1562 int nr = sensor_attr->nr;
1563 int point = sensor_attr->index;
1566 if (has_old_autopwm(data) || point)
1567 reg = data->auto_temp[nr][point];
1569 reg = data->auto_temp[nr][1] - (data->auto_temp[nr][0] & 0x1f);
1571 return sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
1574 static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
1575 const char *buf, size_t count)
1577 struct it87_data *data = dev_get_drvdata(dev);
1578 struct sensor_device_attribute_2 *sensor_attr =
1579 to_sensor_dev_attr_2(attr);
1580 int nr = sensor_attr->nr;
1581 int point = sensor_attr->index;
1585 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1588 mutex_lock(&data->update_lock);
1589 if (has_newer_autopwm(data) && !point) {
1590 reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
1591 reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
1592 data->auto_temp[nr][0] = reg;
1593 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
1595 reg = TEMP_TO_REG(val);
1596 data->auto_temp[nr][point] = reg;
1597 if (has_newer_autopwm(data))
1599 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
1601 mutex_unlock(&data->update_lock);
1605 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1606 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1608 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1611 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1612 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1614 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1617 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1618 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1620 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1623 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1624 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1627 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1628 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1631 static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1632 static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1635 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1636 show_pwm_enable, set_pwm_enable, 0);
1637 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1638 static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
1640 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
1641 show_pwm_temp_map, set_pwm_temp_map, 0);
1642 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1643 show_auto_pwm, set_auto_pwm, 0, 0);
1644 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1645 show_auto_pwm, set_auto_pwm, 0, 1);
1646 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1647 show_auto_pwm, set_auto_pwm, 0, 2);
1648 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1649 show_auto_pwm, NULL, 0, 3);
1650 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1651 show_auto_temp, set_auto_temp, 0, 1);
1652 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1653 show_auto_temp, set_auto_temp, 0, 0);
1654 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1655 show_auto_temp, set_auto_temp, 0, 2);
1656 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1657 show_auto_temp, set_auto_temp, 0, 3);
1658 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1659 show_auto_temp, set_auto_temp, 0, 4);
1660 static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
1661 show_auto_pwm, set_auto_pwm, 0, 0);
1662 static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
1663 show_auto_pwm_slope, set_auto_pwm_slope, 0);
1665 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1666 show_pwm_enable, set_pwm_enable, 1);
1667 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1668 static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
1669 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
1670 show_pwm_temp_map, set_pwm_temp_map, 1);
1671 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1672 show_auto_pwm, set_auto_pwm, 1, 0);
1673 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1674 show_auto_pwm, set_auto_pwm, 1, 1);
1675 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1676 show_auto_pwm, set_auto_pwm, 1, 2);
1677 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1678 show_auto_pwm, NULL, 1, 3);
1679 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1680 show_auto_temp, set_auto_temp, 1, 1);
1681 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1682 show_auto_temp, set_auto_temp, 1, 0);
1683 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1684 show_auto_temp, set_auto_temp, 1, 2);
1685 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1686 show_auto_temp, set_auto_temp, 1, 3);
1687 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1688 show_auto_temp, set_auto_temp, 1, 4);
1689 static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
1690 show_auto_pwm, set_auto_pwm, 1, 0);
1691 static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
1692 show_auto_pwm_slope, set_auto_pwm_slope, 1);
1694 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1695 show_pwm_enable, set_pwm_enable, 2);
1696 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1697 static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
1698 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
1699 show_pwm_temp_map, set_pwm_temp_map, 2);
1700 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1701 show_auto_pwm, set_auto_pwm, 2, 0);
1702 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1703 show_auto_pwm, set_auto_pwm, 2, 1);
1704 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1705 show_auto_pwm, set_auto_pwm, 2, 2);
1706 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1707 show_auto_pwm, NULL, 2, 3);
1708 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1709 show_auto_temp, set_auto_temp, 2, 1);
1710 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1711 show_auto_temp, set_auto_temp, 2, 0);
1712 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1713 show_auto_temp, set_auto_temp, 2, 2);
1714 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1715 show_auto_temp, set_auto_temp, 2, 3);
1716 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1717 show_auto_temp, set_auto_temp, 2, 4);
1718 static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
1719 show_auto_pwm, set_auto_pwm, 2, 0);
1720 static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
1721 show_auto_pwm_slope, set_auto_pwm_slope, 2);
1723 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
1724 show_pwm_enable, set_pwm_enable, 3);
1725 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
1726 static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
1727 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
1728 show_pwm_temp_map, set_pwm_temp_map, 3);
1729 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
1730 show_auto_temp, set_auto_temp, 2, 1);
1731 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1732 show_auto_temp, set_auto_temp, 2, 0);
1733 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
1734 show_auto_temp, set_auto_temp, 2, 2);
1735 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
1736 show_auto_temp, set_auto_temp, 2, 3);
1737 static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
1738 show_auto_pwm, set_auto_pwm, 3, 0);
1739 static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
1740 show_auto_pwm_slope, set_auto_pwm_slope, 3);
1742 static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
1743 show_pwm_enable, set_pwm_enable, 4);
1744 static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
1745 static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
1746 static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
1747 show_pwm_temp_map, set_pwm_temp_map, 4);
1748 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
1749 show_auto_temp, set_auto_temp, 2, 1);
1750 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1751 show_auto_temp, set_auto_temp, 2, 0);
1752 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
1753 show_auto_temp, set_auto_temp, 2, 2);
1754 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
1755 show_auto_temp, set_auto_temp, 2, 3);
1756 static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
1757 show_auto_pwm, set_auto_pwm, 4, 0);
1758 static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
1759 show_auto_pwm_slope, set_auto_pwm_slope, 4);
1761 static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
1762 show_pwm_enable, set_pwm_enable, 5);
1763 static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
1764 static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
1765 static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
1766 show_pwm_temp_map, set_pwm_temp_map, 5);
1767 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
1768 show_auto_temp, set_auto_temp, 2, 1);
1769 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1770 show_auto_temp, set_auto_temp, 2, 0);
1771 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
1772 show_auto_temp, set_auto_temp, 2, 2);
1773 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
1774 show_auto_temp, set_auto_temp, 2, 3);
1775 static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
1776 show_auto_pwm, set_auto_pwm, 5, 0);
1777 static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
1778 show_auto_pwm_slope, set_auto_pwm_slope, 5);
1781 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1784 struct it87_data *data = it87_update_device(dev);
1786 return sprintf(buf, "%u\n", data->alarms);
1788 static DEVICE_ATTR_RO(alarms);
1790 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1793 struct it87_data *data = it87_update_device(dev);
1794 int bitnr = to_sensor_dev_attr(attr)->index;
1796 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1799 static ssize_t clear_intrusion(struct device *dev,
1800 struct device_attribute *attr, const char *buf,
1803 struct it87_data *data = dev_get_drvdata(dev);
1807 if (kstrtol(buf, 10, &val) < 0 || val != 0)
1810 mutex_lock(&data->update_lock);
1811 config = it87_read_value(data, IT87_REG_CONFIG);
1816 it87_write_value(data, IT87_REG_CONFIG, config);
1817 /* Invalidate cache to force re-read */
1820 mutex_unlock(&data->update_lock);
1825 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1826 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1827 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1828 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1829 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1830 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1831 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1832 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1833 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1834 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1835 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1836 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1837 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1838 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
1839 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1840 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1841 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1842 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1843 show_alarm, clear_intrusion, 4);
1845 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1848 struct it87_data *data = it87_update_device(dev);
1849 int bitnr = to_sensor_dev_attr(attr)->index;
1851 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1854 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1855 const char *buf, size_t count)
1857 int bitnr = to_sensor_dev_attr(attr)->index;
1858 struct it87_data *data = dev_get_drvdata(dev);
1861 if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
1864 mutex_lock(&data->update_lock);
1865 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1867 data->beeps |= BIT(bitnr);
1869 data->beeps &= ~BIT(bitnr);
1870 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1871 mutex_unlock(&data->update_lock);
1875 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1876 show_beep, set_beep, 1);
1877 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1878 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1879 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1880 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1881 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1882 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1883 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1884 /* fanX_beep writability is set later */
1885 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1886 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1887 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1888 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1889 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1890 static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
1891 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1892 show_beep, set_beep, 2);
1893 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1894 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1896 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1899 struct it87_data *data = dev_get_drvdata(dev);
1901 return sprintf(buf, "%u\n", data->vrm);
1904 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1905 const char *buf, size_t count)
1907 struct it87_data *data = dev_get_drvdata(dev);
1910 if (kstrtoul(buf, 10, &val) < 0)
1917 static DEVICE_ATTR_RW(vrm);
1919 static ssize_t cpu0_vid_show(struct device *dev,
1920 struct device_attribute *attr, char *buf)
1922 struct it87_data *data = it87_update_device(dev);
1924 return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
1926 static DEVICE_ATTR_RO(cpu0_vid);
1928 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1931 static const char * const labels[] = {
1937 static const char * const labels_it8721[] = {
1943 struct it87_data *data = dev_get_drvdata(dev);
1944 int nr = to_sensor_dev_attr(attr)->index;
1947 if (has_vin3_5v(data) && nr == 0)
1949 else if (has_12mv_adc(data) || has_10_9mv_adc(data))
1950 label = labels_it8721[nr];
1954 return sprintf(buf, "%s\n", label);
1956 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1957 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1958 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1960 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
1962 static umode_t it87_in_is_visible(struct kobject *kobj,
1963 struct attribute *attr, int index)
1965 struct device *dev = container_of(kobj, struct device, kobj);
1966 struct it87_data *data = dev_get_drvdata(dev);
1967 int i = index / 5; /* voltage index */
1968 int a = index % 5; /* attribute index */
1970 if (index >= 40) { /* in8 and higher only have input attributes */
1975 if (!(data->has_in & BIT(i)))
1978 if (a == 4 && !data->has_beep)
1984 static struct attribute *it87_attributes_in[] = {
1985 &sensor_dev_attr_in0_input.dev_attr.attr,
1986 &sensor_dev_attr_in0_min.dev_attr.attr,
1987 &sensor_dev_attr_in0_max.dev_attr.attr,
1988 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1989 &sensor_dev_attr_in0_beep.dev_attr.attr, /* 4 */
1991 &sensor_dev_attr_in1_input.dev_attr.attr,
1992 &sensor_dev_attr_in1_min.dev_attr.attr,
1993 &sensor_dev_attr_in1_max.dev_attr.attr,
1994 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1995 &sensor_dev_attr_in1_beep.dev_attr.attr, /* 9 */
1997 &sensor_dev_attr_in2_input.dev_attr.attr,
1998 &sensor_dev_attr_in2_min.dev_attr.attr,
1999 &sensor_dev_attr_in2_max.dev_attr.attr,
2000 &sensor_dev_attr_in2_alarm.dev_attr.attr,
2001 &sensor_dev_attr_in2_beep.dev_attr.attr, /* 14 */
2003 &sensor_dev_attr_in3_input.dev_attr.attr,
2004 &sensor_dev_attr_in3_min.dev_attr.attr,
2005 &sensor_dev_attr_in3_max.dev_attr.attr,
2006 &sensor_dev_attr_in3_alarm.dev_attr.attr,
2007 &sensor_dev_attr_in3_beep.dev_attr.attr, /* 19 */
2009 &sensor_dev_attr_in4_input.dev_attr.attr,
2010 &sensor_dev_attr_in4_min.dev_attr.attr,
2011 &sensor_dev_attr_in4_max.dev_attr.attr,
2012 &sensor_dev_attr_in4_alarm.dev_attr.attr,
2013 &sensor_dev_attr_in4_beep.dev_attr.attr, /* 24 */
2015 &sensor_dev_attr_in5_input.dev_attr.attr,
2016 &sensor_dev_attr_in5_min.dev_attr.attr,
2017 &sensor_dev_attr_in5_max.dev_attr.attr,
2018 &sensor_dev_attr_in5_alarm.dev_attr.attr,
2019 &sensor_dev_attr_in5_beep.dev_attr.attr, /* 29 */
2021 &sensor_dev_attr_in6_input.dev_attr.attr,
2022 &sensor_dev_attr_in6_min.dev_attr.attr,
2023 &sensor_dev_attr_in6_max.dev_attr.attr,
2024 &sensor_dev_attr_in6_alarm.dev_attr.attr,
2025 &sensor_dev_attr_in6_beep.dev_attr.attr, /* 34 */
2027 &sensor_dev_attr_in7_input.dev_attr.attr,
2028 &sensor_dev_attr_in7_min.dev_attr.attr,
2029 &sensor_dev_attr_in7_max.dev_attr.attr,
2030 &sensor_dev_attr_in7_alarm.dev_attr.attr,
2031 &sensor_dev_attr_in7_beep.dev_attr.attr, /* 39 */
2033 &sensor_dev_attr_in8_input.dev_attr.attr, /* 40 */
2034 &sensor_dev_attr_in9_input.dev_attr.attr,
2035 &sensor_dev_attr_in10_input.dev_attr.attr,
2036 &sensor_dev_attr_in11_input.dev_attr.attr,
2037 &sensor_dev_attr_in12_input.dev_attr.attr,
2041 static const struct attribute_group it87_group_in = {
2042 .attrs = it87_attributes_in,
2043 .is_visible = it87_in_is_visible,
2046 static umode_t it87_temp_is_visible(struct kobject *kobj,
2047 struct attribute *attr, int index)
2049 struct device *dev = container_of(kobj, struct device, kobj);
2050 struct it87_data *data = dev_get_drvdata(dev);
2051 int i = index / 7; /* temperature index */
2052 int a = index % 7; /* attribute index */
2059 if (!(data->has_temp & BIT(i)))
2062 if (a == 5 && !has_temp_offset(data))
2065 if (a == 6 && !data->has_beep)
2071 static struct attribute *it87_attributes_temp[] = {
2072 &sensor_dev_attr_temp1_input.dev_attr.attr,
2073 &sensor_dev_attr_temp1_max.dev_attr.attr,
2074 &sensor_dev_attr_temp1_min.dev_attr.attr,
2075 &sensor_dev_attr_temp1_type.dev_attr.attr,
2076 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
2077 &sensor_dev_attr_temp1_offset.dev_attr.attr, /* 5 */
2078 &sensor_dev_attr_temp1_beep.dev_attr.attr, /* 6 */
2080 &sensor_dev_attr_temp2_input.dev_attr.attr, /* 7 */
2081 &sensor_dev_attr_temp2_max.dev_attr.attr,
2082 &sensor_dev_attr_temp2_min.dev_attr.attr,
2083 &sensor_dev_attr_temp2_type.dev_attr.attr,
2084 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
2085 &sensor_dev_attr_temp2_offset.dev_attr.attr,
2086 &sensor_dev_attr_temp2_beep.dev_attr.attr,
2088 &sensor_dev_attr_temp3_input.dev_attr.attr, /* 14 */
2089 &sensor_dev_attr_temp3_max.dev_attr.attr,
2090 &sensor_dev_attr_temp3_min.dev_attr.attr,
2091 &sensor_dev_attr_temp3_type.dev_attr.attr,
2092 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
2093 &sensor_dev_attr_temp3_offset.dev_attr.attr,
2094 &sensor_dev_attr_temp3_beep.dev_attr.attr,
2096 &sensor_dev_attr_temp4_input.dev_attr.attr, /* 21 */
2097 &sensor_dev_attr_temp5_input.dev_attr.attr,
2098 &sensor_dev_attr_temp6_input.dev_attr.attr,
2102 static const struct attribute_group it87_group_temp = {
2103 .attrs = it87_attributes_temp,
2104 .is_visible = it87_temp_is_visible,
2107 static umode_t it87_is_visible(struct kobject *kobj,
2108 struct attribute *attr, int index)
2110 struct device *dev = container_of(kobj, struct device, kobj);
2111 struct it87_data *data = dev_get_drvdata(dev);
2113 if ((index == 2 || index == 3) && !data->has_vid)
2116 if (index > 3 && !(data->in_internal & BIT(index - 4)))
2122 static struct attribute *it87_attributes[] = {
2123 &dev_attr_alarms.attr,
2124 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
2125 &dev_attr_vrm.attr, /* 2 */
2126 &dev_attr_cpu0_vid.attr, /* 3 */
2127 &sensor_dev_attr_in3_label.dev_attr.attr, /* 4 .. 7 */
2128 &sensor_dev_attr_in7_label.dev_attr.attr,
2129 &sensor_dev_attr_in8_label.dev_attr.attr,
2130 &sensor_dev_attr_in9_label.dev_attr.attr,
2134 static const struct attribute_group it87_group = {
2135 .attrs = it87_attributes,
2136 .is_visible = it87_is_visible,
2139 static umode_t it87_fan_is_visible(struct kobject *kobj,
2140 struct attribute *attr, int index)
2142 struct device *dev = container_of(kobj, struct device, kobj);
2143 struct it87_data *data = dev_get_drvdata(dev);
2144 int i = index / 5; /* fan index */
2145 int a = index % 5; /* attribute index */
2147 if (index >= 15) { /* fan 4..6 don't have divisor attributes */
2148 i = (index - 15) / 4 + 3;
2149 a = (index - 15) % 4;
2152 if (!(data->has_fan & BIT(i)))
2155 if (a == 3) { /* beep */
2156 if (!data->has_beep)
2158 /* first fan beep attribute is writable */
2159 if (i == __ffs(data->has_fan))
2160 return attr->mode | S_IWUSR;
2163 if (a == 4 && has_16bit_fans(data)) /* divisor */
2169 static struct attribute *it87_attributes_fan[] = {
2170 &sensor_dev_attr_fan1_input.dev_attr.attr,
2171 &sensor_dev_attr_fan1_min.dev_attr.attr,
2172 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
2173 &sensor_dev_attr_fan1_beep.dev_attr.attr, /* 3 */
2174 &sensor_dev_attr_fan1_div.dev_attr.attr, /* 4 */
2176 &sensor_dev_attr_fan2_input.dev_attr.attr,
2177 &sensor_dev_attr_fan2_min.dev_attr.attr,
2178 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
2179 &sensor_dev_attr_fan2_beep.dev_attr.attr,
2180 &sensor_dev_attr_fan2_div.dev_attr.attr, /* 9 */
2182 &sensor_dev_attr_fan3_input.dev_attr.attr,
2183 &sensor_dev_attr_fan3_min.dev_attr.attr,
2184 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
2185 &sensor_dev_attr_fan3_beep.dev_attr.attr,
2186 &sensor_dev_attr_fan3_div.dev_attr.attr, /* 14 */
2188 &sensor_dev_attr_fan4_input.dev_attr.attr, /* 15 */
2189 &sensor_dev_attr_fan4_min.dev_attr.attr,
2190 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
2191 &sensor_dev_attr_fan4_beep.dev_attr.attr,
2193 &sensor_dev_attr_fan5_input.dev_attr.attr, /* 19 */
2194 &sensor_dev_attr_fan5_min.dev_attr.attr,
2195 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
2196 &sensor_dev_attr_fan5_beep.dev_attr.attr,
2198 &sensor_dev_attr_fan6_input.dev_attr.attr, /* 23 */
2199 &sensor_dev_attr_fan6_min.dev_attr.attr,
2200 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
2201 &sensor_dev_attr_fan6_beep.dev_attr.attr,
2205 static const struct attribute_group it87_group_fan = {
2206 .attrs = it87_attributes_fan,
2207 .is_visible = it87_fan_is_visible,
2210 static umode_t it87_pwm_is_visible(struct kobject *kobj,
2211 struct attribute *attr, int index)
2213 struct device *dev = container_of(kobj, struct device, kobj);
2214 struct it87_data *data = dev_get_drvdata(dev);
2215 int i = index / 4; /* pwm index */
2216 int a = index % 4; /* attribute index */
2218 if (!(data->has_pwm & BIT(i)))
2221 /* pwmX_auto_channels_temp is only writable if auto pwm is supported */
2222 if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
2223 return attr->mode | S_IWUSR;
2225 /* pwm2_freq is writable if there are two pwm frequency selects */
2226 if (has_pwm_freq2(data) && i == 1 && a == 2)
2227 return attr->mode | S_IWUSR;
2232 static struct attribute *it87_attributes_pwm[] = {
2233 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
2234 &sensor_dev_attr_pwm1.dev_attr.attr,
2235 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
2236 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
2238 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
2239 &sensor_dev_attr_pwm2.dev_attr.attr,
2240 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
2241 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
2243 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
2244 &sensor_dev_attr_pwm3.dev_attr.attr,
2245 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
2246 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
2248 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
2249 &sensor_dev_attr_pwm4.dev_attr.attr,
2250 &sensor_dev_attr_pwm4_freq.dev_attr.attr,
2251 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
2253 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
2254 &sensor_dev_attr_pwm5.dev_attr.attr,
2255 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
2256 &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
2258 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
2259 &sensor_dev_attr_pwm6.dev_attr.attr,
2260 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
2261 &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
2266 static const struct attribute_group it87_group_pwm = {
2267 .attrs = it87_attributes_pwm,
2268 .is_visible = it87_pwm_is_visible,
2271 static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
2272 struct attribute *attr, int index)
2274 struct device *dev = container_of(kobj, struct device, kobj);
2275 struct it87_data *data = dev_get_drvdata(dev);
2276 int i = index / 11; /* pwm index */
2277 int a = index % 11; /* attribute index */
2279 if (index >= 33) { /* pwm 4..6 */
2280 i = (index - 33) / 6 + 3;
2281 a = (index - 33) % 6 + 4;
2284 if (!(data->has_pwm & BIT(i)))
2287 if (has_newer_autopwm(data)) {
2288 if (a < 4) /* no auto point pwm */
2290 if (a == 8) /* no auto_point4 */
2293 if (has_old_autopwm(data)) {
2294 if (a >= 9) /* no pwm_auto_start, pwm_auto_slope */
2301 static struct attribute *it87_attributes_auto_pwm[] = {
2302 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2303 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2304 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2305 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2306 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2307 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
2308 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2309 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2310 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2311 &sensor_dev_attr_pwm1_auto_start.dev_attr.attr,
2312 &sensor_dev_attr_pwm1_auto_slope.dev_attr.attr,
2314 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, /* 11 */
2315 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2316 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2317 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2318 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2319 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
2320 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2321 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2322 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2323 &sensor_dev_attr_pwm2_auto_start.dev_attr.attr,
2324 &sensor_dev_attr_pwm2_auto_slope.dev_attr.attr,
2326 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, /* 22 */
2327 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
2328 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
2329 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
2330 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
2331 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
2332 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
2333 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
2334 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
2335 &sensor_dev_attr_pwm3_auto_start.dev_attr.attr,
2336 &sensor_dev_attr_pwm3_auto_slope.dev_attr.attr,
2338 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr, /* 33 */
2339 &sensor_dev_attr_pwm4_auto_point1_temp_hyst.dev_attr.attr,
2340 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
2341 &sensor_dev_attr_pwm4_auto_point3_temp.dev_attr.attr,
2342 &sensor_dev_attr_pwm4_auto_start.dev_attr.attr,
2343 &sensor_dev_attr_pwm4_auto_slope.dev_attr.attr,
2345 &sensor_dev_attr_pwm5_auto_point1_temp.dev_attr.attr,
2346 &sensor_dev_attr_pwm5_auto_point1_temp_hyst.dev_attr.attr,
2347 &sensor_dev_attr_pwm5_auto_point2_temp.dev_attr.attr,
2348 &sensor_dev_attr_pwm5_auto_point3_temp.dev_attr.attr,
2349 &sensor_dev_attr_pwm5_auto_start.dev_attr.attr,
2350 &sensor_dev_attr_pwm5_auto_slope.dev_attr.attr,
2352 &sensor_dev_attr_pwm6_auto_point1_temp.dev_attr.attr,
2353 &sensor_dev_attr_pwm6_auto_point1_temp_hyst.dev_attr.attr,
2354 &sensor_dev_attr_pwm6_auto_point2_temp.dev_attr.attr,
2355 &sensor_dev_attr_pwm6_auto_point3_temp.dev_attr.attr,
2356 &sensor_dev_attr_pwm6_auto_start.dev_attr.attr,
2357 &sensor_dev_attr_pwm6_auto_slope.dev_attr.attr,
2362 static const struct attribute_group it87_group_auto_pwm = {
2363 .attrs = it87_attributes_auto_pwm,
2364 .is_visible = it87_auto_pwm_is_visible,
2367 /* SuperIO detection - will change isa_address if a chip is found */
2368 static int __init it87_find(int sioaddr, unsigned short *address,
2369 struct it87_sio_data *sio_data)
2373 const char *board_vendor, *board_name;
2374 const struct it87_devices *config;
2376 err = superio_enter(sioaddr);
2381 chip_type = force_id ? force_id : superio_inw(sioaddr, DEVID);
2383 switch (chip_type) {
2385 sio_data->type = it87;
2388 sio_data->type = it8712;
2392 sio_data->type = it8716;
2395 sio_data->type = it8718;
2398 sio_data->type = it8720;
2401 sio_data->type = it8721;
2404 sio_data->type = it8728;
2407 sio_data->type = it8732;
2410 sio_data->type = it8771;
2413 sio_data->type = it8772;
2416 sio_data->type = it8781;
2419 sio_data->type = it8782;
2422 sio_data->type = it8783;
2425 sio_data->type = it8786;
2428 sio_data->type = it8790;
2432 sio_data->type = it8603;
2435 sio_data->type = it8620;
2438 sio_data->type = it8622;
2441 sio_data->type = it8628;
2443 case 0xffff: /* No device at all */
2446 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
2450 superio_select(sioaddr, PME);
2451 if (!(superio_inb(sioaddr, IT87_ACT_REG) & 0x01)) {
2452 pr_info("Device not activated, skipping\n");
2456 *address = superio_inw(sioaddr, IT87_BASE_REG) & ~(IT87_EXTENT - 1);
2457 if (*address == 0) {
2458 pr_info("Base address not set, skipping\n");
2463 sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
2464 pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
2465 it87_devices[sio_data->type].suffix,
2466 *address, sio_data->revision);
2468 config = &it87_devices[sio_data->type];
2470 /* in7 (VSB or VCCH5V) is always internal on some chips */
2471 if (has_in7_internal(config))
2472 sio_data->internal |= BIT(1);
2474 /* in8 (Vbat) is always internal */
2475 sio_data->internal |= BIT(2);
2477 /* in9 (AVCC3), always internal if supported */
2478 if (has_avcc3(config))
2479 sio_data->internal |= BIT(3); /* in9 is AVCC */
2481 sio_data->skip_in |= BIT(9);
2483 if (!has_five_pwm(config))
2484 sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
2485 else if (!has_six_pwm(config))
2486 sio_data->skip_pwm |= BIT(5);
2488 if (!has_vid(config))
2489 sio_data->skip_vid = 1;
2491 /* Read GPIO config and VID value from LDN 7 (GPIO) */
2492 if (sio_data->type == it87) {
2493 /* The IT8705F has a different LD number for GPIO */
2494 superio_select(sioaddr, 5);
2495 sio_data->beep_pin = superio_inb(sioaddr,
2496 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2497 } else if (sio_data->type == it8783) {
2498 int reg25, reg27, reg2a, reg2c, regef;
2500 superio_select(sioaddr, GPIO);
2502 reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2503 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2504 reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
2505 reg2c = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2506 regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
2508 /* Check if fan3 is there or not */
2509 if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
2510 sio_data->skip_fan |= BIT(2);
2511 if ((reg25 & BIT(4)) ||
2512 (!(reg2a & BIT(1)) && (regef & BIT(0))))
2513 sio_data->skip_pwm |= BIT(2);
2515 /* Check if fan2 is there or not */
2517 sio_data->skip_fan |= BIT(1);
2519 sio_data->skip_pwm |= BIT(1);
2522 if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
2523 sio_data->skip_in |= BIT(5); /* No VIN5 */
2527 sio_data->skip_in |= BIT(6); /* No VIN6 */
2531 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2533 if (reg27 & BIT(2)) {
2535 * The data sheet is a bit unclear regarding the
2536 * internal voltage divider for VCCH5V. It says
2537 * "This bit enables and switches VIN7 (pin 91) to the
2538 * internal voltage divider for VCCH5V".
2539 * This is different to other chips, where the internal
2540 * voltage divider would connect VIN7 to an internal
2541 * voltage source. Maybe that is the case here as well.
2543 * Since we don't know for sure, re-route it if that is
2544 * not the case, and ask the user to report if the
2545 * resulting voltage is sane.
2547 if (!(reg2c & BIT(1))) {
2549 superio_outb(sioaddr, IT87_SIO_PINX2_REG,
2551 pr_notice("Routing internal VCCH5V to in7.\n");
2553 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2554 pr_notice("Please report if it displays a reasonable voltage.\n");
2558 sio_data->internal |= BIT(0);
2560 sio_data->internal |= BIT(1);
2562 sio_data->beep_pin = superio_inb(sioaddr,
2563 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2564 } else if (sio_data->type == it8603) {
2567 superio_select(sioaddr, GPIO);
2569 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2571 /* Check if fan3 is there or not */
2573 sio_data->skip_pwm |= BIT(2);
2575 sio_data->skip_fan |= BIT(2);
2577 /* Check if fan2 is there or not */
2578 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2580 sio_data->skip_pwm |= BIT(1);
2582 sio_data->skip_fan |= BIT(1);
2584 sio_data->skip_in |= BIT(5); /* No VIN5 */
2585 sio_data->skip_in |= BIT(6); /* No VIN6 */
2587 sio_data->beep_pin = superio_inb(sioaddr,
2588 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2589 } else if (sio_data->type == it8620 || sio_data->type == it8628) {
2592 superio_select(sioaddr, GPIO);
2594 /* Check for pwm5 */
2595 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2597 sio_data->skip_pwm |= BIT(4);
2599 /* Check for fan4, fan5 */
2600 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2601 if (!(reg & BIT(5)))
2602 sio_data->skip_fan |= BIT(3);
2603 if (!(reg & BIT(4)))
2604 sio_data->skip_fan |= BIT(4);
2606 /* Check for pwm3, fan3 */
2607 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2609 sio_data->skip_pwm |= BIT(2);
2611 sio_data->skip_fan |= BIT(2);
2613 /* Check for pwm4 */
2614 reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
2615 if (!(reg & BIT(2)))
2616 sio_data->skip_pwm |= BIT(3);
2618 /* Check for pwm2, fan2 */
2619 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2621 sio_data->skip_pwm |= BIT(1);
2623 sio_data->skip_fan |= BIT(1);
2624 /* Check for pwm6, fan6 */
2625 if (!(reg & BIT(7))) {
2626 sio_data->skip_pwm |= BIT(5);
2627 sio_data->skip_fan |= BIT(5);
2630 /* Check if AVCC is on VIN3 */
2631 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2633 sio_data->internal |= BIT(0);
2635 sio_data->skip_in |= BIT(9);
2637 sio_data->beep_pin = superio_inb(sioaddr,
2638 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2639 } else if (sio_data->type == it8622) {
2642 superio_select(sioaddr, GPIO);
2644 /* Check for pwm4, fan4 */
2645 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2647 sio_data->skip_fan |= BIT(3);
2649 sio_data->skip_pwm |= BIT(3);
2651 /* Check for pwm3, fan3, pwm5, fan5 */
2652 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2654 sio_data->skip_pwm |= BIT(2);
2656 sio_data->skip_fan |= BIT(2);
2658 sio_data->skip_pwm |= BIT(4);
2660 sio_data->skip_fan |= BIT(4);
2662 /* Check for pwm2, fan2 */
2663 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2665 sio_data->skip_pwm |= BIT(1);
2667 sio_data->skip_fan |= BIT(1);
2669 /* Check for AVCC */
2670 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2671 if (!(reg & BIT(0)))
2672 sio_data->skip_in |= BIT(9);
2674 sio_data->beep_pin = superio_inb(sioaddr,
2675 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2680 superio_select(sioaddr, GPIO);
2682 /* Check for fan4, fan5 */
2683 if (has_five_fans(config)) {
2684 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2685 switch (sio_data->type) {
2688 sio_data->skip_fan |= BIT(3);
2690 sio_data->skip_fan |= BIT(4);
2695 if (!(reg & BIT(5)))
2696 sio_data->skip_fan |= BIT(3);
2697 if (!(reg & BIT(4)))
2698 sio_data->skip_fan |= BIT(4);
2705 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2706 if (!sio_data->skip_vid) {
2707 /* We need at least 4 VID pins */
2709 pr_info("VID is disabled (pins used for GPIO)\n");
2710 sio_data->skip_vid = 1;
2714 /* Check if fan3 is there or not */
2716 sio_data->skip_pwm |= BIT(2);
2718 sio_data->skip_fan |= BIT(2);
2720 /* Check if fan2 is there or not */
2721 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2723 sio_data->skip_pwm |= BIT(1);
2725 sio_data->skip_fan |= BIT(1);
2727 if ((sio_data->type == it8718 || sio_data->type == it8720) &&
2728 !(sio_data->skip_vid))
2729 sio_data->vid_value = superio_inb(sioaddr,
2732 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2734 uart6 = sio_data->type == it8782 && (reg & BIT(2));
2737 * The IT8720F has no VIN7 pin, so VCCH should always be
2738 * routed internally to VIN7 with an internal divider.
2739 * Curiously, there still is a configuration bit to control
2740 * this, which means it can be set incorrectly. And even
2741 * more curiously, many boards out there are improperly
2742 * configured, even though the IT8720F datasheet claims
2743 * that the internal routing of VCCH to VIN7 is the default
2744 * setting. So we force the internal routing in this case.
2746 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
2747 * If UART6 is enabled, re-route VIN7 to the internal divider
2748 * if that is not already the case.
2750 if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
2752 superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
2753 pr_notice("Routing internal VCCH to in7\n");
2756 sio_data->internal |= BIT(0);
2758 sio_data->internal |= BIT(1);
2761 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2762 * While VIN7 can be routed to the internal voltage divider,
2763 * VIN5 and VIN6 are not available if UART6 is enabled.
2765 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2766 * is the temperature source. Since we can not read the
2767 * temperature source here, skip_temp is preliminary.
2770 sio_data->skip_in |= BIT(5) | BIT(6);
2771 sio_data->skip_temp |= BIT(2);
2774 sio_data->beep_pin = superio_inb(sioaddr,
2775 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2777 if (sio_data->beep_pin)
2778 pr_info("Beeping is supported\n");
2780 /* Disable specific features based on DMI strings */
2781 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2782 board_name = dmi_get_system_info(DMI_BOARD_NAME);
2783 if (board_vendor && board_name) {
2784 if (strcmp(board_vendor, "nVIDIA") == 0 &&
2785 strcmp(board_name, "FN68PT") == 0) {
2787 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2788 * connected to a fan, but to something else. One user
2789 * has reported instant system power-off when changing
2790 * the PWM2 duty cycle, so we disable it.
2791 * I use the board name string as the trigger in case
2792 * the same board is ever used in other systems.
2794 pr_info("Disabling pwm2 due to hardware constraints\n");
2795 sio_data->skip_pwm = BIT(1);
2800 superio_exit(sioaddr);
2804 /* Called when we have found a new IT87. */
2805 static void it87_init_device(struct platform_device *pdev)
2807 struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2808 struct it87_data *data = platform_get_drvdata(pdev);
2813 * For each PWM channel:
2814 * - If it is in automatic mode, setting to manual mode should set
2815 * the fan to full speed by default.
2816 * - If it is in manual mode, we need a mapping to temperature
2817 * channels to use when later setting to automatic mode later.
2818 * Use a 1:1 mapping by default (we are clueless.)
2819 * In both cases, the value can (and should) be changed by the user
2820 * prior to switching to a different mode.
2821 * Note that this is no longer needed for the IT8721F and later, as
2822 * these have separate registers for the temperature mapping and the
2823 * manual duty cycle.
2825 for (i = 0; i < NUM_AUTO_PWM; i++) {
2826 data->pwm_temp_map[i] = i;
2827 data->pwm_duty[i] = 0x7f; /* Full speed */
2828 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2832 * Some chips seem to have default value 0xff for all limit
2833 * registers. For low voltage limits it makes no sense and triggers
2834 * alarms, so change to 0 instead. For high temperature limits, it
2835 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2836 * but is still confusing, so change to 127 degrees C.
2838 for (i = 0; i < NUM_VIN_LIMIT; i++) {
2839 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2841 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2843 for (i = 0; i < NUM_TEMP_LIMIT; i++) {
2844 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2846 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2850 * Temperature channels are not forcibly enabled, as they can be
2851 * set to two different sensor types and we can't guess which one
2852 * is correct for a given system. These channels can be enabled at
2853 * run-time through the temp{1-3}_type sysfs accessors if needed.
2856 /* Check if voltage monitors are reset manually or by some reason */
2857 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2858 if ((tmp & 0xff) == 0) {
2859 /* Enable all voltage monitors */
2860 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2863 /* Check if tachometers are reset manually or by some reason */
2864 mask = 0x70 & ~(sio_data->skip_fan << 4);
2865 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2866 if ((data->fan_main_ctrl & mask) == 0) {
2867 /* Enable all fan tachometers */
2868 data->fan_main_ctrl |= mask;
2869 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2870 data->fan_main_ctrl);
2872 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2874 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2876 /* Set tachometers to 16-bit mode if needed */
2877 if (has_fan16_config(data)) {
2878 if (~tmp & 0x07 & data->has_fan) {
2880 "Setting fan1-3 to 16-bit mode\n");
2881 it87_write_value(data, IT87_REG_FAN_16BIT,
2886 /* Check for additional fans */
2887 if (has_five_fans(data)) {
2889 data->has_fan |= BIT(3); /* fan4 enabled */
2891 data->has_fan |= BIT(4); /* fan5 enabled */
2892 if (has_six_fans(data) && (tmp & BIT(2)))
2893 data->has_fan |= BIT(5); /* fan6 enabled */
2896 /* Fan input pins may be used for alternative functions */
2897 data->has_fan &= ~sio_data->skip_fan;
2899 /* Check if pwm5, pwm6 are enabled */
2900 if (has_six_pwm(data)) {
2901 /* The following code may be IT8620E specific */
2902 tmp = it87_read_value(data, IT87_REG_FAN_DIV);
2903 if ((tmp & 0xc0) == 0xc0)
2904 sio_data->skip_pwm |= BIT(4);
2905 if (!(tmp & BIT(3)))
2906 sio_data->skip_pwm |= BIT(5);
2909 /* Start monitoring */
2910 it87_write_value(data, IT87_REG_CONFIG,
2911 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2912 | (update_vbat ? 0x41 : 0x01));
2915 /* Return 1 if and only if the PWM interface is safe to use */
2916 static int it87_check_pwm(struct device *dev)
2918 struct it87_data *data = dev_get_drvdata(dev);
2920 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2921 * and polarity set to active low is sign that this is the case so we
2922 * disable pwm control to protect the user.
2924 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2926 if ((tmp & 0x87) == 0) {
2927 if (fix_pwm_polarity) {
2929 * The user asks us to attempt a chip reconfiguration.
2930 * This means switching to active high polarity and
2931 * inverting all fan speed values.
2936 for (i = 0; i < ARRAY_SIZE(pwm); i++)
2937 pwm[i] = it87_read_value(data,
2941 * If any fan is in automatic pwm mode, the polarity
2942 * might be correct, as suspicious as it seems, so we
2943 * better don't change anything (but still disable the
2946 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2948 "Reconfiguring PWM to active high polarity\n");
2949 it87_write_value(data, IT87_REG_FAN_CTL,
2951 for (i = 0; i < 3; i++)
2952 it87_write_value(data,
2959 "PWM configuration is too broken to be fixed\n");
2963 "Detected broken BIOS defaults, disabling PWM interface\n");
2965 } else if (fix_pwm_polarity) {
2967 "PWM configuration looks sane, won't touch\n");
2973 static int it87_probe(struct platform_device *pdev)
2975 struct it87_data *data;
2976 struct resource *res;
2977 struct device *dev = &pdev->dev;
2978 struct it87_sio_data *sio_data = dev_get_platdata(dev);
2979 int enable_pwm_interface;
2980 struct device *hwmon_dev;
2982 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2983 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2985 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2986 (unsigned long)res->start,
2987 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2991 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2995 data->addr = res->start;
2996 data->type = sio_data->type;
2997 data->features = it87_devices[sio_data->type].features;
2998 data->peci_mask = it87_devices[sio_data->type].peci_mask;
2999 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
3001 * IT8705F Datasheet 0.4.1, 3h == Version G.
3002 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
3003 * These are the first revisions with 16-bit tachometer support.
3005 switch (data->type) {
3007 if (sio_data->revision >= 0x03) {
3008 data->features &= ~FEAT_OLD_AUTOPWM;
3009 data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
3013 if (sio_data->revision >= 0x08) {
3014 data->features &= ~FEAT_OLD_AUTOPWM;
3015 data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
3023 /* Now, we do the remaining detection. */
3024 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
3025 it87_read_value(data, IT87_REG_CHIPID) != 0x90)
3028 platform_set_drvdata(pdev, data);
3030 mutex_init(&data->update_lock);
3032 /* Check PWM configuration */
3033 enable_pwm_interface = it87_check_pwm(dev);
3035 /* Starting with IT8721F, we handle scaling of internal voltages */
3036 if (has_12mv_adc(data)) {
3037 if (sio_data->internal & BIT(0))
3038 data->in_scaled |= BIT(3); /* in3 is AVCC */
3039 if (sio_data->internal & BIT(1))
3040 data->in_scaled |= BIT(7); /* in7 is VSB */
3041 if (sio_data->internal & BIT(2))
3042 data->in_scaled |= BIT(8); /* in8 is Vbat */
3043 if (sio_data->internal & BIT(3))
3044 data->in_scaled |= BIT(9); /* in9 is AVCC */
3045 } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
3046 sio_data->type == it8783) {
3047 if (sio_data->internal & BIT(0))
3048 data->in_scaled |= BIT(3); /* in3 is VCC5V */
3049 if (sio_data->internal & BIT(1))
3050 data->in_scaled |= BIT(7); /* in7 is VCCH5V */
3053 data->has_temp = 0x07;
3054 if (sio_data->skip_temp & BIT(2)) {
3055 if (sio_data->type == it8782 &&
3056 !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
3057 data->has_temp &= ~BIT(2);
3060 data->in_internal = sio_data->internal;
3061 data->has_in = 0x3ff & ~sio_data->skip_in;
3063 if (has_six_temp(data)) {
3064 u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
3066 /* Check for additional temperature sensors */
3067 if ((reg & 0x03) >= 0x02)
3068 data->has_temp |= BIT(3);
3069 if (((reg >> 2) & 0x03) >= 0x02)
3070 data->has_temp |= BIT(4);
3071 if (((reg >> 4) & 0x03) >= 0x02)
3072 data->has_temp |= BIT(5);
3074 /* Check for additional voltage sensors */
3075 if ((reg & 0x03) == 0x01)
3076 data->has_in |= BIT(10);
3077 if (((reg >> 2) & 0x03) == 0x01)
3078 data->has_in |= BIT(11);
3079 if (((reg >> 4) & 0x03) == 0x01)
3080 data->has_in |= BIT(12);
3083 data->has_beep = !!sio_data->beep_pin;
3085 /* Initialize the IT87 chip */
3086 it87_init_device(pdev);
3088 if (!sio_data->skip_vid) {
3089 data->has_vid = true;
3090 data->vrm = vid_which_vrm();
3091 /* VID reading from Super-I/O config space if available */
3092 data->vid = sio_data->vid_value;
3095 /* Prepare for sysfs hooks */
3096 data->groups[0] = &it87_group;
3097 data->groups[1] = &it87_group_in;
3098 data->groups[2] = &it87_group_temp;
3099 data->groups[3] = &it87_group_fan;
3101 if (enable_pwm_interface) {
3102 data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
3103 data->has_pwm &= ~sio_data->skip_pwm;
3105 data->groups[4] = &it87_group_pwm;
3106 if (has_old_autopwm(data) || has_newer_autopwm(data))
3107 data->groups[5] = &it87_group_auto_pwm;
3110 hwmon_dev = devm_hwmon_device_register_with_groups(dev,
3111 it87_devices[sio_data->type].name,
3112 data, data->groups);
3113 return PTR_ERR_OR_ZERO(hwmon_dev);
3116 static struct platform_driver it87_driver = {
3120 .probe = it87_probe,
3123 static int __init it87_device_add(int index, unsigned short address,
3124 const struct it87_sio_data *sio_data)
3126 struct platform_device *pdev;
3127 struct resource res = {
3128 .start = address + IT87_EC_OFFSET,
3129 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
3131 .flags = IORESOURCE_IO,
3135 err = acpi_check_resource_conflict(&res);
3139 pdev = platform_device_alloc(DRVNAME, address);
3143 err = platform_device_add_resources(pdev, &res, 1);
3145 pr_err("Device resource addition failed (%d)\n", err);
3146 goto exit_device_put;
3149 err = platform_device_add_data(pdev, sio_data,
3150 sizeof(struct it87_sio_data));
3152 pr_err("Platform data allocation failed\n");
3153 goto exit_device_put;
3156 err = platform_device_add(pdev);
3158 pr_err("Device addition failed (%d)\n", err);
3159 goto exit_device_put;
3162 it87_pdev[index] = pdev;
3166 platform_device_put(pdev);
3170 static int __init sm_it87_init(void)
3172 int sioaddr[2] = { REG_2E, REG_4E };
3173 struct it87_sio_data sio_data;
3174 unsigned short isa_address;
3178 err = platform_driver_register(&it87_driver);
3182 for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
3183 memset(&sio_data, 0, sizeof(struct it87_sio_data));
3185 err = it87_find(sioaddr[i], &isa_address, &sio_data);
3186 if (err || isa_address == 0)
3189 err = it87_device_add(i, isa_address, &sio_data);
3191 goto exit_dev_unregister;
3197 goto exit_unregister;
3201 exit_dev_unregister:
3202 /* NULL check handled by platform_device_unregister */
3203 platform_device_unregister(it87_pdev[0]);
3205 platform_driver_unregister(&it87_driver);
3209 static void __exit sm_it87_exit(void)
3211 /* NULL check handled by platform_device_unregister */
3212 platform_device_unregister(it87_pdev[1]);
3213 platform_device_unregister(it87_pdev[0]);
3214 platform_driver_unregister(&it87_driver);
3217 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
3218 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
3219 module_param(update_vbat, bool, 0);
3220 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
3221 module_param(fix_pwm_polarity, bool, 0);
3222 MODULE_PARM_DESC(fix_pwm_polarity,
3223 "Force PWM polarity to active high (DANGEROUS)");
3224 MODULE_LICENSE("GPL");
3226 module_init(sm_it87_init);
3227 module_exit(sm_it87_exit);