1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  it87.c - Part of lm_sensors, Linux kernel modules for hardware
   4 *           monitoring.
   5 *
   6 *  The IT8705F is an LPC-based Super I/O part that contains UARTs, a
   7 *  parallel port, an IR port, a MIDI port, a floppy controller, etc., in
   8 *  addition to an Environment Controller (Enhanced Hardware Monitor and
   9 *  Fan Controller)
  10 *
  11 *  This driver supports only the Environment Controller in the IT8705F and
  12 *  similar parts.  The other devices are supported by different drivers.
  13 *
  14 *  Supports: IT8603E  Super I/O chip w/LPC interface
  15 *            IT8620E  Super I/O chip w/LPC interface
  16 *            IT8622E  Super I/O chip w/LPC interface
  17 *            IT8623E  Super I/O chip w/LPC interface
  18 *            IT8628E  Super I/O chip w/LPC interface
  19 *            IT8705F  Super I/O chip w/LPC interface
  20 *            IT8712F  Super I/O chip w/LPC interface
  21 *            IT8716F  Super I/O chip w/LPC interface
  22 *            IT8718F  Super I/O chip w/LPC interface
  23 *            IT8720F  Super I/O chip w/LPC interface
  24 *            IT8721F  Super I/O chip w/LPC interface
  25 *            IT8726F  Super I/O chip w/LPC interface
  26 *            IT8728F  Super I/O chip w/LPC interface
  27 *            IT8732F  Super I/O chip w/LPC interface
  28 *            IT8758E  Super I/O chip w/LPC interface
  29 *            IT8771E  Super I/O chip w/LPC interface
  30 *            IT8772E  Super I/O chip w/LPC interface
  31 *            IT8781F  Super I/O chip w/LPC interface
  32 *            IT8782F  Super I/O chip w/LPC interface
  33 *            IT8783E/F Super I/O chip w/LPC interface
  34 *            IT8786E  Super I/O chip w/LPC interface
  35 *            IT8790E  Super I/O chip w/LPC interface
  36 *            IT8792E  Super I/O chip w/LPC interface
  37 *            Sis950   A clone of the IT8705F
  38 *
  39 *  Copyright (C) 2001 Chris Gauthron
  40 *  Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
  41 */
  42
  43#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  44
  45#include <linux/bitops.h>
  46#include <linux/module.h>
  47#include <linux/init.h>
  48#include <linux/slab.h>
  49#include <linux/jiffies.h>
  50#include <linux/platform_device.h>
  51#include <linux/hwmon.h>
  52#include <linux/hwmon-sysfs.h>
  53#include <linux/hwmon-vid.h>
  54#include <linux/err.h>
  55#include <linux/mutex.h>
  56#include <linux/sysfs.h>
  57#include <linux/string.h>
  58#include <linux/dmi.h>
  59#include <linux/acpi.h>
  60#include <linux/io.h>
  61
  62#define DRVNAME "it87"
  63
  64enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
  65	     it8771, it8772, it8781, it8782, it8783, it8786, it8790,
  66	     it8792, it8603, it8620, it8622, it8628 };
  67
  68static unsigned short force_id;
  69module_param(force_id, ushort, 0);
  70MODULE_PARM_DESC(force_id, "Override the detected device ID");
  71
  72static struct platform_device *it87_pdev[2];
  73
  74#define	REG_2E	0x2e	/* The register to read/write */
  75#define	REG_4E	0x4e	/* Secondary register to read/write */
  76
  77#define	DEV	0x07	/* Register: Logical device select */
  78#define PME	0x04	/* The device with the fan registers in it */
  79
  80/* The device with the IT8718F/IT8720F VID value in it */
  81#define GPIO	0x07
  82
  83#define	DEVID	0x20	/* Register: Device ID */
  84#define	DEVREV	0x22	/* Register: Device Revision */
  85
  86static inline int superio_inb(int ioreg, int reg)
  87{
  88	outb(reg, ioreg);
  89	return inb(ioreg + 1);
  90}
  91
  92static inline void superio_outb(int ioreg, int reg, int val)
  93{
  94	outb(reg, ioreg);
  95	outb(val, ioreg + 1);
  96}
  97
  98static int superio_inw(int ioreg, int reg)
  99{
 100	int val;
 101
 102	outb(reg++, ioreg);
 103	val = inb(ioreg + 1) << 8;
 104	outb(reg, ioreg);
 105	val |= inb(ioreg + 1);
 106	return val;
 107}
 108
 109static inline void superio_select(int ioreg, int ldn)
 110{
 111	outb(DEV, ioreg);
 112	outb(ldn, ioreg + 1);
 113}
 114
 115static inline int superio_enter(int ioreg)
 116{
 117	/*
 118	 * Try to reserve ioreg and ioreg + 1 for exclusive access.
 119	 */
 120	if (!request_muxed_region(ioreg, 2, DRVNAME))
 121		return -EBUSY;
 122
 123	outb(0x87, ioreg);
 124	outb(0x01, ioreg);
 125	outb(0x55, ioreg);
 126	outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg);
 127	return 0;
 128}
 129
 130static inline void superio_exit(int ioreg)
 131{
 132	outb(0x02, ioreg);
 133	outb(0x02, ioreg + 1);
 134	release_region(ioreg, 2);
 135}
 136
 137/* Logical device 4 registers */
 138#define IT8712F_DEVID 0x8712
 139#define IT8705F_DEVID 0x8705
 140#define IT8716F_DEVID 0x8716
 141#define IT8718F_DEVID 0x8718
 142#define IT8720F_DEVID 0x8720
 143#define IT8721F_DEVID 0x8721
 144#define IT8726F_DEVID 0x8726
 145#define IT8728F_DEVID 0x8728
 146#define IT8732F_DEVID 0x8732
 147#define IT8792E_DEVID 0x8733
 148#define IT8771E_DEVID 0x8771
 149#define IT8772E_DEVID 0x8772
 150#define IT8781F_DEVID 0x8781
 151#define IT8782F_DEVID 0x8782
 152#define IT8783E_DEVID 0x8783
 153#define IT8786E_DEVID 0x8786
 154#define IT8790E_DEVID 0x8790
 155#define IT8603E_DEVID 0x8603
 156#define IT8620E_DEVID 0x8620
 157#define IT8622E_DEVID 0x8622
 158#define IT8623E_DEVID 0x8623
 159#define IT8628E_DEVID 0x8628
 160#define IT87_ACT_REG  0x30
 161#define IT87_BASE_REG 0x60
 162
 163/* Logical device 7 registers (IT8712F and later) */
 164#define IT87_SIO_GPIO1_REG	0x25
 165#define IT87_SIO_GPIO2_REG	0x26
 166#define IT87_SIO_GPIO3_REG	0x27
 167#define IT87_SIO_GPIO4_REG	0x28
 168#define IT87_SIO_GPIO5_REG	0x29
 169#define IT87_SIO_PINX1_REG	0x2a	/* Pin selection */
 170#define IT87_SIO_PINX2_REG	0x2c	/* Pin selection */
 171#define IT87_SIO_SPI_REG	0xef	/* SPI function pin select */
 172#define IT87_SIO_VID_REG	0xfc	/* VID value */
 173#define IT87_SIO_BEEP_PIN_REG	0xf6	/* Beep pin mapping */
 174
 175/* Update battery voltage after every reading if true */
 176static bool update_vbat;
 177
 178/* Not all BIOSes properly configure the PWM registers */
 179static bool fix_pwm_polarity;
 180
 181/* Many IT87 constants specified below */
 182
 183/* Length of ISA address segment */
 184#define IT87_EXTENT 8
 185
 186/* Length of ISA address segment for Environmental Controller */
 187#define IT87_EC_EXTENT 2
 188
 189/* Offset of EC registers from ISA base address */
 190#define IT87_EC_OFFSET 5
 191
 192/* Where are the ISA address/data registers relative to the EC base address */
 193#define IT87_ADDR_REG_OFFSET 0
 194#define IT87_DATA_REG_OFFSET 1
 195
 196/*----- The IT87 registers -----*/
 197
 198#define IT87_REG_CONFIG        0x00
 199
 200#define IT87_REG_ALARM1        0x01
 201#define IT87_REG_ALARM2        0x02
 202#define IT87_REG_ALARM3        0x03
 203
 204/*
 205 * The IT8718F and IT8720F have the VID value in a different register, in
 206 * Super-I/O configuration space.
 207 */
 208#define IT87_REG_VID           0x0a
 209/*
 210 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 211 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 212 * mode.
 213 */
 214#define IT87_REG_FAN_DIV       0x0b
 215#define IT87_REG_FAN_16BIT     0x0c
 216
 217/*
 218 * Monitors:
 219 * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
 220 * - up to 6 temp (1 to 6)
 221 * - up to 6 fan (1 to 6)
 222 */
 223
 224static const u8 IT87_REG_FAN[]         = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
 225static const u8 IT87_REG_FAN_MIN[]     = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
 226static const u8 IT87_REG_FANX[]        = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
 227static const u8 IT87_REG_FANX_MIN[]    = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
 228static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
 229
 230#define IT87_REG_FAN_MAIN_CTRL 0x13
 231#define IT87_REG_FAN_CTL       0x14
 232static const u8 IT87_REG_PWM[]         = { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
 233static const u8 IT87_REG_PWM_DUTY[]    = { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
 234
 235static const u8 IT87_REG_VIN[]	= { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 236				    0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
 237
 238#define IT87_REG_TEMP(nr)      (0x29 + (nr))
 239
 240#define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 241#define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 242#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 243#define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 244
 245#define IT87_REG_VIN_ENABLE    0x50
 246#define IT87_REG_TEMP_ENABLE   0x51
 247#define IT87_REG_TEMP_EXTRA    0x55
 248#define IT87_REG_BEEP_ENABLE   0x5c
 249
 250#define IT87_REG_CHIPID        0x58
 251
 252static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
 253
 254#define IT87_REG_AUTO_TEMP(nr, i) (IT87_REG_AUTO_BASE[nr] + (i))
 255#define IT87_REG_AUTO_PWM(nr, i)  (IT87_REG_AUTO_BASE[nr] + 5 + (i))
 256
 257#define IT87_REG_TEMP456_ENABLE	0x77
 258
 259#define NUM_VIN			ARRAY_SIZE(IT87_REG_VIN)
 260#define NUM_VIN_LIMIT		8
 261#define NUM_TEMP		6
 262#define NUM_TEMP_OFFSET		ARRAY_SIZE(IT87_REG_TEMP_OFFSET)
 263#define NUM_TEMP_LIMIT		3
 264#define NUM_FAN			ARRAY_SIZE(IT87_REG_FAN)
 265#define NUM_FAN_DIV		3
 266#define NUM_PWM			ARRAY_SIZE(IT87_REG_PWM)
 267#define NUM_AUTO_PWM		ARRAY_SIZE(IT87_REG_PWM)
 268
 269struct it87_devices {
 270	const char *name;
 271	const char * const suffix;
 272	u32 features;
 273	u8 peci_mask;
 274	u8 old_peci_mask;
 275};
 276
 277#define FEAT_12MV_ADC		BIT(0)
 278#define FEAT_NEWER_AUTOPWM	BIT(1)
 279#define FEAT_OLD_AUTOPWM	BIT(2)
 280#define FEAT_16BIT_FANS		BIT(3)
 281#define FEAT_TEMP_OFFSET	BIT(4)
 282#define FEAT_TEMP_PECI		BIT(5)
 283#define FEAT_TEMP_OLD_PECI	BIT(6)
 284#define FEAT_FAN16_CONFIG	BIT(7)	/* Need to enable 16-bit fans */
 285#define FEAT_FIVE_FANS		BIT(8)	/* Supports five fans */
 286#define FEAT_VID		BIT(9)	/* Set if chip supports VID */
 287#define FEAT_IN7_INTERNAL	BIT(10)	/* Set if in7 is internal */
 288#define FEAT_SIX_FANS		BIT(11)	/* Supports six fans */
 289#define FEAT_10_9MV_ADC		BIT(12)
 290#define FEAT_AVCC3		BIT(13)	/* Chip supports in9/AVCC3 */
 291#define FEAT_FIVE_PWM		BIT(14)	/* Chip supports 5 pwm chn */
 292#define FEAT_SIX_PWM		BIT(15)	/* Chip supports 6 pwm chn */
 293#define FEAT_PWM_FREQ2		BIT(16)	/* Separate pwm freq 2 */
 294#define FEAT_SIX_TEMP		BIT(17)	/* Up to 6 temp sensors */
 295#define FEAT_VIN3_5V		BIT(18)	/* VIN3 connected to +5V */
 296
 297static const struct it87_devices it87_devices[] = {
 298	[it87] = {
 299		.name = "it87",
 300		.suffix = "F",
 301		.features = FEAT_OLD_AUTOPWM,	/* may need to overwrite */
 302	},
 303	[it8712] = {
 304		.name = "it8712",
 305		.suffix = "F",
 306		.features = FEAT_OLD_AUTOPWM | FEAT_VID,
 307						/* may need to overwrite */
 308	},
 309	[it8716] = {
 310		.name = "it8716",
 311		.suffix = "F",
 312		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 313		  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2,
 314	},
 315	[it8718] = {
 316		.name = "it8718",
 317		.suffix = "F",
 318		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 319		  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 320		  | FEAT_PWM_FREQ2,
 321		.old_peci_mask = 0x4,
 322	},
 323	[it8720] = {
 324		.name = "it8720",
 325		.suffix = "F",
 326		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 327		  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 328		  | FEAT_PWM_FREQ2,
 329		.old_peci_mask = 0x4,
 330	},
 331	[it8721] = {
 332		.name = "it8721",
 333		.suffix = "F",
 334		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 335		  | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 336		  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
 337		  | FEAT_PWM_FREQ2,
 338		.peci_mask = 0x05,
 339		.old_peci_mask = 0x02,	/* Actually reports PCH */
 340	},
 341	[it8728] = {
 342		.name = "it8728",
 343		.suffix = "F",
 344		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 345		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 346		  | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2,
 347		.peci_mask = 0x07,
 348	},
 349	[it8732] = {
 350		.name = "it8732",
 351		.suffix = "F",
 352		.features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 353		  | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 354		  | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
 355		.peci_mask = 0x07,
 356		.old_peci_mask = 0x02,	/* Actually reports PCH */
 357	},
 358	[it8771] = {
 359		.name = "it8771",
 360		.suffix = "E",
 361		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 362		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 363		  | FEAT_PWM_FREQ2,
 364				/* PECI: guesswork */
 365				/* 12mV ADC (OHM) */
 366				/* 16 bit fans (OHM) */
 367				/* three fans, always 16 bit (guesswork) */
 368		.peci_mask = 0x07,
 369	},
 370	[it8772] = {
 371		.name = "it8772",
 372		.suffix = "E",
 373		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 374		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 375		  | FEAT_PWM_FREQ2,
 376				/* PECI (coreboot) */
 377				/* 12mV ADC (HWSensors4, OHM) */
 378				/* 16 bit fans (HWSensors4, OHM) */
 379				/* three fans, always 16 bit (datasheet) */
 380		.peci_mask = 0x07,
 381	},
 382	[it8781] = {
 383		.name = "it8781",
 384		.suffix = "F",
 385		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 386		  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 387		.old_peci_mask = 0x4,
 388	},
 389	[it8782] = {
 390		.name = "it8782",
 391		.suffix = "F",
 392		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 393		  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 394		.old_peci_mask = 0x4,
 395	},
 396	[it8783] = {
 397		.name = "it8783",
 398		.suffix = "E/F",
 399		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 400		  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 401		.old_peci_mask = 0x4,
 402	},
 403	[it8786] = {
 404		.name = "it8786",
 405		.suffix = "E",
 406		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 407		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 408		  | FEAT_PWM_FREQ2,
 409		.peci_mask = 0x07,
 410	},
 411	[it8790] = {
 412		.name = "it8790",
 413		.suffix = "E",
 414		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 415		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 416		  | FEAT_PWM_FREQ2,
 417		.peci_mask = 0x07,
 418	},
 419	[it8792] = {
 420		.name = "it8792",
 421		.suffix = "E",
 422		.features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 423		  | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 424		  | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
 425		.peci_mask = 0x07,
 426		.old_peci_mask = 0x02,	/* Actually reports PCH */
 427	},
 428	[it8603] = {
 429		.name = "it8603",
 430		.suffix = "E",
 431		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 432		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 433		  | FEAT_AVCC3 | FEAT_PWM_FREQ2,
 434		.peci_mask = 0x07,
 435	},
 436	[it8620] = {
 437		.name = "it8620",
 438		.suffix = "E",
 439		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 440		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 441		  | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 442		  | FEAT_SIX_TEMP | FEAT_VIN3_5V,
 443		.peci_mask = 0x07,
 444	},
 445	[it8622] = {
 446		.name = "it8622",
 447		.suffix = "E",
 448		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 449		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 450		  | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
 451		  | FEAT_AVCC3 | FEAT_VIN3_5V,
 452		.peci_mask = 0x07,
 453	},
 454	[it8628] = {
 455		.name = "it8628",
 456		.suffix = "E",
 457		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 458		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 459		  | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 460		  | FEAT_SIX_TEMP | FEAT_VIN3_5V,
 461		.peci_mask = 0x07,
 462	},
 463};
 464
 465#define has_16bit_fans(data)	((data)->features & FEAT_16BIT_FANS)
 466#define has_12mv_adc(data)	((data)->features & FEAT_12MV_ADC)
 467#define has_10_9mv_adc(data)	((data)->features & FEAT_10_9MV_ADC)
 468#define has_newer_autopwm(data)	((data)->features & FEAT_NEWER_AUTOPWM)
 469#define has_old_autopwm(data)	((data)->features & FEAT_OLD_AUTOPWM)
 470#define has_temp_offset(data)	((data)->features & FEAT_TEMP_OFFSET)
 471#define has_temp_peci(data, nr)	(((data)->features & FEAT_TEMP_PECI) && \
 472				 ((data)->peci_mask & BIT(nr)))
 473#define has_temp_old_peci(data, nr) \
 474				(((data)->features & FEAT_TEMP_OLD_PECI) && \
 475				 ((data)->old_peci_mask & BIT(nr)))
 476#define has_fan16_config(data)	((data)->features & FEAT_FAN16_CONFIG)
 477#define has_five_fans(data)	((data)->features & (FEAT_FIVE_FANS | \
 478						     FEAT_SIX_FANS))
 479#define has_vid(data)		((data)->features & FEAT_VID)
 480#define has_in7_internal(data)	((data)->features & FEAT_IN7_INTERNAL)
 481#define has_six_fans(data)	((data)->features & FEAT_SIX_FANS)
 482#define has_avcc3(data)		((data)->features & FEAT_AVCC3)
 483#define has_five_pwm(data)	((data)->features & (FEAT_FIVE_PWM \
 484						     | FEAT_SIX_PWM))
 485#define has_six_pwm(data)	((data)->features & FEAT_SIX_PWM)
 486#define has_pwm_freq2(data)	((data)->features & FEAT_PWM_FREQ2)
 487#define has_six_temp(data)	((data)->features & FEAT_SIX_TEMP)
 488#define has_vin3_5v(data)	((data)->features & FEAT_VIN3_5V)
 489
 490struct it87_sio_data {
 491	int sioaddr;
 492	enum chips type;
 493	/* Values read from Super-I/O config space */
 494	u8 revision;
 495	u8 vid_value;
 496	u8 beep_pin;
 497	u8 internal;	/* Internal sensors can be labeled */
 498	bool need_in7_reroute;
 499	/* Features skipped based on config or DMI */
 500	u16 skip_in;
 501	u8 skip_vid;
 502	u8 skip_fan;
 503	u8 skip_pwm;
 504	u8 skip_temp;
 505};
 506
 507/*
 508 * For each registered chip, we need to keep some data in memory.
 509 * The structure is dynamically allocated.
 510 */
 511struct it87_data {
 512	const struct attribute_group *groups[7];
 513	int sioaddr;
 514	enum chips type;
 515	u32 features;
 516	u8 peci_mask;
 517	u8 old_peci_mask;
 518
 519	unsigned short addr;
 520	const char *name;
 521	struct mutex update_lock;
 522	char valid;		/* !=0 if following fields are valid */
 523	unsigned long last_updated;	/* In jiffies */
 524
 525	u16 in_scaled;		/* Internal voltage sensors are scaled */
 526	u16 in_internal;	/* Bitfield, internal sensors (for labels) */
 527	u16 has_in;		/* Bitfield, voltage sensors enabled */
 528	u8 in[NUM_VIN][3];		/* [nr][0]=in, [1]=min, [2]=max */
 529	bool need_in7_reroute;
 530	u8 has_fan;		/* Bitfield, fans enabled */
 531	u16 fan[NUM_FAN][2];	/* Register values, [nr][0]=fan, [1]=min */
 532	u8 has_temp;		/* Bitfield, temp sensors enabled */
 533	s8 temp[NUM_TEMP][4];	/* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 534	u8 sensor;		/* Register value (IT87_REG_TEMP_ENABLE) */
 535	u8 extra;		/* Register value (IT87_REG_TEMP_EXTRA) */
 536	u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
 537	bool has_vid;		/* True if VID supported */
 538	u8 vid;			/* Register encoding, combined */
 539	u8 vrm;
 540	u32 alarms;		/* Register encoding, combined */
 541	bool has_beep;		/* true if beep supported */
 542	u8 beeps;		/* Register encoding */
 543	u8 fan_main_ctrl;	/* Register value */
 544	u8 fan_ctl;		/* Register value */
 545
 546	/*
 547	 * The following 3 arrays correspond to the same registers up to
 548	 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 549	 * 7, and we want to preserve settings on mode changes, so we have
 550	 * to track all values separately.
 551	 * Starting with the IT8721F, the manual PWM duty cycles are stored
 552	 * in separate registers (8-bit values), so the separate tracking
 553	 * is no longer needed, but it is still done to keep the driver
 554	 * simple.
 555	 */
 556	u8 has_pwm;		/* Bitfield, pwm control enabled */
 557	u8 pwm_ctrl[NUM_PWM];	/* Register value */
 558	u8 pwm_duty[NUM_PWM];	/* Manual PWM value set by user */
 559	u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
 560
 561	/* Automatic fan speed control registers */
 562	u8 auto_pwm[NUM_AUTO_PWM][4];	/* [nr][3] is hard-coded */
 563	s8 auto_temp[NUM_AUTO_PWM][5];	/* [nr][0] is point1_temp_hyst */
 564};
 565
 566static int adc_lsb(const struct it87_data *data, int nr)
 567{
 568	int lsb;
 569
 570	if (has_12mv_adc(data))
 571		lsb = 120;
 572	else if (has_10_9mv_adc(data))
 573		lsb = 109;
 574	else
 575		lsb = 160;
 576	if (data->in_scaled & BIT(nr))
 577		lsb <<= 1;
 578	return lsb;
 579}
 580
 581static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 582{
 583	val = DIV_ROUND_CLOSEST(val * 10, adc_lsb(data, nr));
 584	return clamp_val(val, 0, 255);
 585}
 586
 587static int in_from_reg(const struct it87_data *data, int nr, int val)
 588{
 589	return DIV_ROUND_CLOSEST(val * adc_lsb(data, nr), 10);
 590}
 591
 592static inline u8 FAN_TO_REG(long rpm, int div)
 593{
 594	if (rpm == 0)
 595		return 255;
 596	rpm = clamp_val(rpm, 1, 1000000);
 597	return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 598}
 599
 600static inline u16 FAN16_TO_REG(long rpm)
 601{
 602	if (rpm == 0)
 603		return 0xffff;
 604	return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 605}
 606
 607#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 608				1350000 / ((val) * (div)))
 609/* The divider is fixed to 2 in 16-bit mode */
 610#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 611			     1350000 / ((val) * 2))
 612
 613#define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 614				    ((val) + 500) / 1000), -128, 127))
 615#define TEMP_FROM_REG(val) ((val) * 1000)
 616
 617static u8 pwm_to_reg(const struct it87_data *data, long val)
 618{
 619	if (has_newer_autopwm(data))
 620		return val;
 621	else
 622		return val >> 1;
 623}
 624
 625static int pwm_from_reg(const struct it87_data *data, u8 reg)
 626{
 627	if (has_newer_autopwm(data))
 628		return reg;
 629	else
 630		return (reg & 0x7f) << 1;
 631}
 632
 633static int DIV_TO_REG(int val)
 634{
 635	int answer = 0;
 636
 637	while (answer < 7 && (val >>= 1))
 638		answer++;
 639	return answer;
 640}
 641
 642#define DIV_FROM_REG(val) BIT(val)
 643
 644/*
 645 * PWM base frequencies. The frequency has to be divided by either 128 or 256,
 646 * depending on the chip type, to calculate the actual PWM frequency.
 647 *
 648 * Some of the chip datasheets suggest a base frequency of 51 kHz instead
 649 * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
 650 * of 200 Hz. Sometimes both PWM frequency select registers are affected,
 651 * sometimes just one. It is unknown if this is a datasheet error or real,
 652 * so this is ignored for now.
 653 */
 654static const unsigned int pwm_freq[8] = {
 655	48000000,
 656	24000000,
 657	12000000,
 658	8000000,
 659	6000000,
 660	3000000,
 661	1500000,
 662	750000,
 663};
 664
 665/*
 666 * Must be called with data->update_lock held, except during initialization.
 667 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 668 * would slow down the IT87 access and should not be necessary.
 669 */
 670static int it87_read_value(struct it87_data *data, u8 reg)
 671{
 672	outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 673	return inb_p(data->addr + IT87_DATA_REG_OFFSET);
 674}
 675
 676/*
 677 * Must be called with data->update_lock held, except during initialization.
 678 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 679 * would slow down the IT87 access and should not be necessary.
 680 */
 681static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
 682{
 683	outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 684	outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
 685}
 686
 687static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 688{
 689	data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
 690	if (has_newer_autopwm(data)) {
 691		data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 692		data->pwm_duty[nr] = it87_read_value(data,
 693						     IT87_REG_PWM_DUTY[nr]);
 694	} else {
 695		if (data->pwm_ctrl[nr] & 0x80)	/* Automatic mode */
 696			data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 697		else				/* Manual mode */
 698			data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
 699	}
 700
 701	if (has_old_autopwm(data)) {
 702		int i;
 703
 704		for (i = 0; i < 5 ; i++)
 705			data->auto_temp[nr][i] = it87_read_value(data,
 706						IT87_REG_AUTO_TEMP(nr, i));
 707		for (i = 0; i < 3 ; i++)
 708			data->auto_pwm[nr][i] = it87_read_value(data,
 709						IT87_REG_AUTO_PWM(nr, i));
 710	} else if (has_newer_autopwm(data)) {
 711		int i;
 712
 713		/*
 714		 * 0: temperature hysteresis (base + 5)
 715		 * 1: fan off temperature (base + 0)
 716		 * 2: fan start temperature (base + 1)
 717		 * 3: fan max temperature (base + 2)
 718		 */
 719		data->auto_temp[nr][0] =
 720			it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
 721
 722		for (i = 0; i < 3 ; i++)
 723			data->auto_temp[nr][i + 1] =
 724				it87_read_value(data,
 725						IT87_REG_AUTO_TEMP(nr, i));
 726		/*
 727		 * 0: start pwm value (base + 3)
 728		 * 1: pwm slope (base + 4, 1/8th pwm)
 729		 */
 730		data->auto_pwm[nr][0] =
 731			it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
 732		data->auto_pwm[nr][1] =
 733			it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
 734	}
 735}
 736
 737static struct it87_data *it87_update_device(struct device *dev)
 738{
 739	struct it87_data *data = dev_get_drvdata(dev);
 740	int i;
 741
 742	mutex_lock(&data->update_lock);
 743
 744	if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
 745	    !data->valid) {
 746		if (update_vbat) {
 747			/*
 748			 * Cleared after each update, so reenable.  Value
 749			 * returned by this read will be previous value
 750			 */
 751			it87_write_value(data, IT87_REG_CONFIG,
 752				it87_read_value(data, IT87_REG_CONFIG) | 0x40);
 753		}
 754		for (i = 0; i < NUM_VIN; i++) {
 755			if (!(data->has_in & BIT(i)))
 756				continue;
 757
 758			data->in[i][0] =
 759				it87_read_value(data, IT87_REG_VIN[i]);
 760
 761			/* VBAT and AVCC don't have limit registers */
 762			if (i >= NUM_VIN_LIMIT)
 763				continue;
 764
 765			data->in[i][1] =
 766				it87_read_value(data, IT87_REG_VIN_MIN(i));
 767			data->in[i][2] =
 768				it87_read_value(data, IT87_REG_VIN_MAX(i));
 769		}
 770
 771		for (i = 0; i < NUM_FAN; i++) {
 772			/* Skip disabled fans */
 773			if (!(data->has_fan & BIT(i)))
 774				continue;
 775
 776			data->fan[i][1] =
 777				it87_read_value(data, IT87_REG_FAN_MIN[i]);
 778			data->fan[i][0] = it87_read_value(data,
 779				       IT87_REG_FAN[i]);
 780			/* Add high byte if in 16-bit mode */
 781			if (has_16bit_fans(data)) {
 782				data->fan[i][0] |= it87_read_value(data,
 783						IT87_REG_FANX[i]) << 8;
 784				data->fan[i][1] |= it87_read_value(data,
 785						IT87_REG_FANX_MIN[i]) << 8;
 786			}
 787		}
 788		for (i = 0; i < NUM_TEMP; i++) {
 789			if (!(data->has_temp & BIT(i)))
 790				continue;
 791			data->temp[i][0] =
 792				it87_read_value(data, IT87_REG_TEMP(i));
 793
 794			if (has_temp_offset(data) && i < NUM_TEMP_OFFSET)
 795				data->temp[i][3] =
 796				  it87_read_value(data,
 797						  IT87_REG_TEMP_OFFSET[i]);
 798
 799			if (i >= NUM_TEMP_LIMIT)
 800				continue;
 801
 802			data->temp[i][1] =
 803				it87_read_value(data, IT87_REG_TEMP_LOW(i));
 804			data->temp[i][2] =
 805				it87_read_value(data, IT87_REG_TEMP_HIGH(i));
 806		}
 807
 808		/* Newer chips don't have clock dividers */
 809		if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
 810			i = it87_read_value(data, IT87_REG_FAN_DIV);
 811			data->fan_div[0] = i & 0x07;
 812			data->fan_div[1] = (i >> 3) & 0x07;
 813			data->fan_div[2] = (i & 0x40) ? 3 : 1;
 814		}
 815
 816		data->alarms =
 817			it87_read_value(data, IT87_REG_ALARM1) |
 818			(it87_read_value(data, IT87_REG_ALARM2) << 8) |
 819			(it87_read_value(data, IT87_REG_ALARM3) << 16);
 820		data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 821
 822		data->fan_main_ctrl = it87_read_value(data,
 823				IT87_REG_FAN_MAIN_CTRL);
 824		data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
 825		for (i = 0; i < NUM_PWM; i++) {
 826			if (!(data->has_pwm & BIT(i)))
 827				continue;
 828			it87_update_pwm_ctrl(data, i);
 829		}
 830
 831		data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 832		data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 833		/*
 834		 * The IT8705F does not have VID capability.
 835		 * The IT8718F and later don't use IT87_REG_VID for the
 836		 * same purpose.
 837		 */
 838		if (data->type == it8712 || data->type == it8716) {
 839			data->vid = it87_read_value(data, IT87_REG_VID);
 840			/*
 841			 * The older IT8712F revisions had only 5 VID pins,
 842			 * but we assume it is always safe to read 6 bits.
 843			 */
 844			data->vid &= 0x3f;
 845		}
 846		data->last_updated = jiffies;
 847		data->valid = 1;
 848	}
 849
 850	mutex_unlock(&data->update_lock);
 851
 852	return data;
 853}
 854
 855static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 856		       char *buf)
 857{
 858	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 859	struct it87_data *data = it87_update_device(dev);
 860	int index = sattr->index;
 861	int nr = sattr->nr;
 862
 863	return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 864}
 865
 866static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 867		      const char *buf, size_t count)
 868{
 869	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 870	struct it87_data *data = dev_get_drvdata(dev);
 871	int index = sattr->index;
 872	int nr = sattr->nr;
 873	unsigned long val;
 874
 875	if (kstrtoul(buf, 10, &val) < 0)
 876		return -EINVAL;
 877
 878	mutex_lock(&data->update_lock);
 879	data->in[nr][index] = in_to_reg(data, nr, val);
 880	it87_write_value(data,
 881			 index == 1 ? IT87_REG_VIN_MIN(nr)
 882				    : IT87_REG_VIN_MAX(nr),
 883			 data->in[nr][index]);
 884	mutex_unlock(&data->update_lock);
 885	return count;
 886}
 887
 888static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 889static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 890			    0, 1);
 891static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 892			    0, 2);
 893
 894static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 895static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 896			    1, 1);
 897static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 898			    1, 2);
 899
 900static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 901static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 902			    2, 1);
 903static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 904			    2, 2);
 905
 906static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 907static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 908			    3, 1);
 909static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 910			    3, 2);
 911
 912static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 913static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 914			    4, 1);
 915static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 916			    4, 2);
 917
 918static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 919static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 920			    5, 1);
 921static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 922			    5, 2);
 923
 924static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 925static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 926			    6, 1);
 927static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 928			    6, 2);
 929
 930static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 931static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 932			    7, 1);
 933static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 934			    7, 2);
 935
 936static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 937static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
 938static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
 939static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
 940static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
 941
 942/* Up to 6 temperatures */
 943static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 944			 char *buf)
 945{
 946	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 947	int nr = sattr->nr;
 948	int index = sattr->index;
 949	struct it87_data *data = it87_update_device(dev);
 950
 951	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 952}
 953
 954static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 955			const char *buf, size_t count)
 956{
 957	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 958	int nr = sattr->nr;
 959	int index = sattr->index;
 960	struct it87_data *data = dev_get_drvdata(dev);
 961	long val;
 962	u8 reg, regval;
 963
 964	if (kstrtol(buf, 10, &val) < 0)
 965		return -EINVAL;
 966
 967	mutex_lock(&data->update_lock);
 968
 969	switch (index) {
 970	default:
 971	case 1:
 972		reg = IT87_REG_TEMP_LOW(nr);
 973		break;
 974	case 2:
 975		reg = IT87_REG_TEMP_HIGH(nr);
 976		break;
 977	case 3:
 978		regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 979		if (!(regval & 0x80)) {
 980			regval |= 0x80;
 981			it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 982		}
 983		data->valid = 0;
 984		reg = IT87_REG_TEMP_OFFSET[nr];
 985		break;
 986	}
 987
 988	data->temp[nr][index] = TEMP_TO_REG(val);
 989	it87_write_value(data, reg, data->temp[nr][index]);
 990	mutex_unlock(&data->update_lock);
 991	return count;
 992}
 993
 994static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 995static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 996			    0, 1);
 997static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 998			    0, 2);
 999static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1000			    set_temp, 0, 3);
1001static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
1002static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1003			    1, 1);
1004static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1005			    1, 2);
1006static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1007			    set_temp, 1, 3);
1008static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
1009static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1010			    2, 1);
1011static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1012			    2, 2);
1013static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1014			    set_temp, 2, 3);
1015static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
1016static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
1017static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
1018
1019static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
1020			      char *buf)
1021{
1022	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1023	int nr = sensor_attr->index;
1024	struct it87_data *data = it87_update_device(dev);
1025	u8 reg = data->sensor;	    /* In case value is updated while used */
1026	u8 extra = data->extra;
1027
1028	if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) ||
1029	    (has_temp_old_peci(data, nr) && (extra & 0x80)))
1030		return sprintf(buf, "6\n");  /* Intel PECI */
1031	if (reg & (1 << nr))
1032		return sprintf(buf, "3\n");  /* thermal diode */
1033	if (reg & (8 << nr))
1034		return sprintf(buf, "4\n");  /* thermistor */
1035	return sprintf(buf, "0\n");      /* disabled */
1036}
1037
1038static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
1039			     const char *buf, size_t count)
1040{
1041	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1042	int nr = sensor_attr->index;
1043
1044	struct it87_data *data = dev_get_drvdata(dev);
1045	long val;
1046	u8 reg, extra;
1047
1048	if (kstrtol(buf, 10, &val) < 0)
1049		return -EINVAL;
1050
1051	reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1052	reg &= ~(1 << nr);
1053	reg &= ~(8 << nr);
1054	if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
1055		reg &= 0x3f;
1056	extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1057	if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
1058		extra &= 0x7f;
1059	if (val == 2) {	/* backwards compatibility */
1060		dev_warn(dev,
1061			 "Sensor type 2 is deprecated, please use 4 instead\n");
1062		val = 4;
1063	}
1064	/* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
1065	if (val == 3)
1066		reg |= 1 << nr;
1067	else if (val == 4)
1068		reg |= 8 << nr;
1069	else if (has_temp_peci(data, nr) && val == 6)
1070		reg |= (nr + 1) << 6;
1071	else if (has_temp_old_peci(data, nr) && val == 6)
1072		extra |= 0x80;
1073	else if (val != 0)
1074		return -EINVAL;
1075
1076	mutex_lock(&data->update_lock);
1077	data->sensor = reg;
1078	data->extra = extra;
1079	it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
1080	if (has_temp_old_peci(data, nr))
1081		it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1082	data->valid = 0;	/* Force cache refresh */
1083	mutex_unlock(&data->update_lock);
1084	return count;
1085}
1086
1087static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
1088			  set_temp_type, 0);
1089static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
1090			  set_temp_type, 1);
1091static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
1092			  set_temp_type, 2);
1093
1094/* 6 Fans */
1095
1096static int pwm_mode(const struct it87_data *data, int nr)
1097{
1098	if (data->type != it8603 && nr < 3 && !(data->fan_main_ctrl & BIT(nr)))
1099		return 0;				/* Full speed */
1100	if (data->pwm_ctrl[nr] & 0x80)
1101		return 2;				/* Automatic mode */
1102	if ((data->type == it8603 || nr >= 3) &&
1103	    data->pwm_duty[nr] == pwm_to_reg(data, 0xff))
1104		return 0;			/* Full speed */
1105
1106	return 1;				/* Manual mode */
1107}
1108
1109static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1110			char *buf)
1111{
1112	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1113	int nr = sattr->nr;
1114	int index = sattr->index;
1115	int speed;
1116	struct it87_data *data = it87_update_device(dev);
1117
1118	speed = has_16bit_fans(data) ?
1119		FAN16_FROM_REG(data->fan[nr][index]) :
1120		FAN_FROM_REG(data->fan[nr][index],
1121			     DIV_FROM_REG(data->fan_div[nr]));
1122	return sprintf(buf, "%d\n", speed);
1123}
1124
1125static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
1126			    char *buf)
1127{
1128	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1129	struct it87_data *data = it87_update_device(dev);
1130	int nr = sensor_attr->index;
1131
1132	return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
1133}
1134
1135static ssize_t show_pwm_enable(struct device *dev,
1136			       struct device_attribute *attr, char *buf)
1137{
1138	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1139	struct it87_data *data = it87_update_device(dev);
1140	int nr = sensor_attr->index;
1141
1142	return sprintf(buf, "%d\n", pwm_mode(data, nr));
1143}
1144
1145static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1146			char *buf)
1147{
1148	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1149	struct it87_data *data = it87_update_device(dev);
1150	int nr = sensor_attr->index;
1151
1152	return sprintf(buf, "%d\n",
1153		       pwm_from_reg(data, data->pwm_duty[nr]));
1154}
1155
1156static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
1157			     char *buf)
1158{
1159	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1160	struct it87_data *data = it87_update_device(dev);
1161	int nr = sensor_attr->index;
1162	unsigned int freq;
1163	int index;
1164
1165	if (has_pwm_freq2(data) && nr == 1)
1166		index = (data->extra >> 4) & 0x07;
1167	else
1168		index = (data->fan_ctl >> 4) & 0x07;
1169
1170	freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
1171
1172	return sprintf(buf, "%u\n", freq);
1173}
1174
1175static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1176		       const char *buf, size_t count)
1177{
1178	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1179	int nr = sattr->nr;
1180	int index = sattr->index;
1181
1182	struct it87_data *data = dev_get_drvdata(dev);
1183	long val;
1184	u8 reg;
1185
1186	if (kstrtol(buf, 10, &val) < 0)
1187		return -EINVAL;
1188
1189	mutex_lock(&data->update_lock);
1190
1191	if (has_16bit_fans(data)) {
1192		data->fan[nr][index] = FAN16_TO_REG(val);
1193		it87_write_value(data, IT87_REG_FAN_MIN[nr],
1194				 data->fan[nr][index] & 0xff);
1195		it87_write_value(data, IT87_REG_FANX_MIN[nr],
1196				 data->fan[nr][index] >> 8);
1197	} else {
1198		reg = it87_read_value(data, IT87_REG_FAN_DIV);
1199		switch (nr) {
1200		case 0:
1201			data->fan_div[nr] = reg & 0x07;
1202			break;
1203		case 1:
1204			data->fan_div[nr] = (reg >> 3) & 0x07;
1205			break;
1206		case 2:
1207			data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
1208			break;
1209		}
1210		data->fan[nr][index] =
1211		  FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
1212		it87_write_value(data, IT87_REG_FAN_MIN[nr],
1213				 data->fan[nr][index]);
1214	}
1215
1216	mutex_unlock(&data->update_lock);
1217	return count;
1218}
1219
1220static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
1221			   const char *buf, size_t count)
1222{
1223	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1224	struct it87_data *data = dev_get_drvdata(dev);
1225	int nr = sensor_attr->index;
1226	unsigned long val;
1227	int min;
1228	u8 old;
1229
1230	if (kstrtoul(buf, 10, &val) < 0)
1231		return -EINVAL;
1232
1233	mutex_lock(&data->update_lock);
1234	old = it87_read_value(data, IT87_REG_FAN_DIV);
1235
1236	/* Save fan min limit */
1237	min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
1238
1239	switch (nr) {
1240	case 0:
1241	case 1:
1242		data->fan_div[nr] = DIV_TO_REG(val);
1243		break;
1244	case 2:
1245		if (val < 8)
1246			data->fan_div[nr] = 1;
1247		else
1248			data->fan_div[nr] = 3;
1249	}
1250	val = old & 0x80;
1251	val |= (data->fan_div[0] & 0x07);
1252	val |= (data->fan_div[1] & 0x07) << 3;
1253	if (data->fan_div[2] == 3)
1254		val |= 0x1 << 6;
1255	it87_write_value(data, IT87_REG_FAN_DIV, val);
1256
1257	/* Restore fan min limit */
1258	data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
1259	it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
1260
1261	mutex_unlock(&data->update_lock);
1262	return count;
1263}
1264
1265/* Returns 0 if OK, -EINVAL otherwise */
1266static int check_trip_points(struct device *dev, int nr)
1267{
1268	const struct it87_data *data = dev_get_drvdata(dev);
1269	int i, err = 0;
1270
1271	if (has_old_autopwm(data)) {
1272		for (i = 0; i < 3; i++) {
1273			if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1274				err = -EINVAL;
1275		}
1276		for (i = 0; i < 2; i++) {
1277			if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1278				err = -EINVAL;
1279		}
1280	} else if (has_newer_autopwm(data)) {
1281		for (i = 1; i < 3; i++) {
1282			if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1283				err = -EINVAL;
1284		}
1285	}
1286
1287	if (err) {
1288		dev_err(dev,
1289			"Inconsistent trip points, not switching to automatic mode\n");
1290		dev_err(dev, "Adjust the trip points and try again\n");
1291	}
1292	return err;
1293}
1294
1295static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1296			      const char *buf, size_t count)
1297{
1298	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1299	struct it87_data *data = dev_get_drvdata(dev);
1300	int nr = sensor_attr->index;
1301	long val;
1302
1303	if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1304		return -EINVAL;
1305
1306	/* Check trip points before switching to automatic mode */
1307	if (val == 2) {
1308		if (check_trip_points(dev, nr) < 0)
1309			return -EINVAL;
1310	}
1311
1312	mutex_lock(&data->update_lock);
1313
1314	if (val == 0) {
1315		if (nr < 3 && data->type != it8603) {
1316			int tmp;
1317			/* make sure the fan is on when in on/off mode */
1318			tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1319			it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
1320			/* set on/off mode */
1321			data->fan_main_ctrl &= ~BIT(nr);
1322			it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1323					 data->fan_main_ctrl);
1324		} else {
1325			u8 ctrl;
1326
1327			/* No on/off mode, set maximum pwm value */
1328			data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
1329			it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1330					 data->pwm_duty[nr]);
1331			/* and set manual mode */
1332			if (has_newer_autopwm(data)) {
1333				ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1334					data->pwm_temp_map[nr];
1335			} else {
1336				ctrl = data->pwm_duty[nr];
1337			}
1338			data->pwm_ctrl[nr] = ctrl;
1339			it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1340		}
1341	} else {
1342		u8 ctrl;
1343
1344		if (has_newer_autopwm(data)) {
1345			ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1346				data->pwm_temp_map[nr];
1347			if (val != 1)
1348				ctrl |= 0x80;
1349		} else {
1350			ctrl = (val == 1 ? data->pwm_duty[nr] : 0x80);
1351		}
1352		data->pwm_ctrl[nr] = ctrl;
1353		it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1354
1355		if (data->type != it8603 && nr < 3) {
1356			/* set SmartGuardian mode */
1357			data->fan_main_ctrl |= BIT(nr);
1358			it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1359					 data->fan_main_ctrl);
1360		}
1361	}
1362
1363	mutex_unlock(&data->update_lock);
1364	return count;
1365}
1366
1367static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1368		       const char *buf, size_t count)
1369{
1370	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1371	struct it87_data *data = dev_get_drvdata(dev);
1372	int nr = sensor_attr->index;
1373	long val;
1374
1375	if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1376		return -EINVAL;
1377
1378	mutex_lock(&data->update_lock);
1379	it87_update_pwm_ctrl(data, nr);
1380	if (has_newer_autopwm(data)) {
1381		/*
1382		 * If we are in automatic mode, the PWM duty cycle register
1383		 * is read-only so we can't write the value.
1384		 */
1385		if (data->pwm_ctrl[nr] & 0x80) {
1386			mutex_unlock(&data->update_lock);
1387			return -EBUSY;
1388		}
1389		data->pwm_duty[nr] = pwm_to_reg(data, val);
1390		it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1391				 data->pwm_duty[nr]);
1392	} else {
1393		data->pwm_duty[nr] = pwm_to_reg(data, val);
1394		/*
1395		 * If we are in manual mode, write the duty cycle immediately;
1396		 * otherwise, just store it for later use.
1397		 */
1398		if (!(data->pwm_ctrl[nr] & 0x80)) {
1399			data->pwm_ctrl[nr] = data->pwm_duty[nr];
1400			it87_write_value(data, IT87_REG_PWM[nr],
1401					 data->pwm_ctrl[nr]);
1402		}
1403	}
1404	mutex_unlock(&data->update_lock);
1405	return count;
1406}
1407
1408static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
1409			    const char *buf, size_t count)
1410{
1411	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1412	struct it87_data *data = dev_get_drvdata(dev);
1413	int nr = sensor_attr->index;
1414	unsigned long val;
1415	int i;
1416
1417	if (kstrtoul(buf, 10, &val) < 0)
1418		return -EINVAL;
1419
1420	val = clamp_val(val, 0, 1000000);
1421	val *= has_newer_autopwm(data) ? 256 : 128;
1422
1423	/* Search for the nearest available frequency */
1424	for (i = 0; i < 7; i++) {
1425		if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
1426			break;
1427	}
1428
1429	mutex_lock(&data->update_lock);
1430	if (nr == 0) {
1431		data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1432		data->fan_ctl |= i << 4;
1433		it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1434	} else {
1435		data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1436		data->extra |= i << 4;
1437		it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1438	}
1439	mutex_unlock(&data->update_lock);
1440
1441	return count;
1442}
1443
1444static ssize_t show_pwm_temp_map(struct device *dev,
1445				 struct device_attribute *attr, char *buf)
1446{
1447	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1448	struct it87_data *data = it87_update_device(dev);
1449	int nr = sensor_attr->index;
1450	int map;
1451
1452	map = data->pwm_temp_map[nr];
1453	if (map >= 3)
1454		map = 0;	/* Should never happen */
1455	if (nr >= 3)		/* pwm channels 3..6 map to temp4..6 */
1456		map += 3;
1457
1458	return sprintf(buf, "%d\n", (int)BIT(map));
1459}
1460
1461static ssize_t set_pwm_temp_map(struct device *dev,
1462				struct device_attribute *attr, const char *buf,
1463				size_t count)
1464{
1465	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1466	struct it87_data *data = dev_get_drvdata(dev);
1467	int nr = sensor_attr->index;
1468	long val;
1469	u8 reg;
1470
1471	if (kstrtol(buf, 10, &val) < 0)
1472		return -EINVAL;
1473
1474	if (nr >= 3)
1475		val -= 3;
1476
1477	switch (val) {
1478	case BIT(0):
1479		reg = 0x00;
1480		break;
1481	case BIT(1):
1482		reg = 0x01;
1483		break;
1484	case BIT(2):
1485		reg = 0x02;
1486		break;
1487	default:
1488		return -EINVAL;
1489	}
1490
1491	mutex_lock(&data->update_lock);
1492	it87_update_pwm_ctrl(data, nr);
1493	data->pwm_temp_map[nr] = reg;
1494	/*
1495	 * If we are in automatic mode, write the temp mapping immediately;
1496	 * otherwise, just store it for later use.
1497	 */
1498	if (data->pwm_ctrl[nr] & 0x80) {
1499		data->pwm_ctrl[nr] = (data->pwm_ctrl[nr] & 0xfc) |
1500						data->pwm_temp_map[nr];
1501		it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1502	}
1503	mutex_unlock(&data->update_lock);
1504	return count;
1505}
1506
1507static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
1508			     char *buf)
1509{
1510	struct it87_data *data = it87_update_device(dev);
1511	struct sensor_device_attribute_2 *sensor_attr =
1512			to_sensor_dev_attr_2(attr);
1513	int nr = sensor_attr->nr;
1514	int point = sensor_attr->index;
1515
1516	return sprintf(buf, "%d\n",
1517		       pwm_from_reg(data, data->auto_pwm[nr][point]));
1518}
1519
1520static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
1521			    const char *buf, size_t count)
1522{
1523	struct it87_data *data = dev_get_drvdata(dev);
1524	struct sensor_device_attribute_2 *sensor_attr =
1525			to_sensor_dev_attr_2(attr);
1526	int nr = sensor_attr->nr;
1527	int point = sensor_attr->index;
1528	int regaddr;
1529	long val;
1530
1531	if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1532		return -EINVAL;
1533
1534	mutex_lock(&data->update_lock);
1535	data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1536	if (has_newer_autopwm(data))
1537		regaddr = IT87_REG_AUTO_TEMP(nr, 3);
1538	else
1539		regaddr = IT87_REG_AUTO_PWM(nr, point);
1540	it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
1541	mutex_unlock(&data->update_lock);
1542	return count;
1543}
1544
1545static ssize_t show_auto_pwm_slope(struct device *dev,
1546				   struct device_attribute *attr, char *buf)
1547{
1548	struct it87_data *data = it87_update_device(dev);
1549	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1550	int nr = sensor_attr->index;
1551
1552	return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
1553}
1554
1555static ssize_t set_auto_pwm_slope(struct device *dev,
1556				  struct device_attribute *attr,
1557				  const char *buf, size_t count)
1558{
1559	struct it87_data *data = dev_get_drvdata(dev);
1560	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1561	int nr = sensor_attr->index;
1562	unsigned long val;
1563
1564	if (kstrtoul(buf, 10, &val) < 0 || val > 127)
1565		return -EINVAL;
1566
1567	mutex_lock(&data->update_lock);
1568	data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
1569	it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
1570			 data->auto_pwm[nr][1]);
1571	mutex_unlock(&data->update_lock);
1572	return count;
1573}
1574
1575static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
1576			      char *buf)
1577{
1578	struct it87_data *data = it87_update_device(dev);
1579	struct sensor_device_attribute_2 *sensor_attr =
1580			to_sensor_dev_attr_2(attr);
1581	int nr = sensor_attr->nr;
1582	int point = sensor_attr->index;
1583	int reg;
1584
1585	if (has_old_autopwm(data) || point)
1586		reg = data->auto_temp[nr][point];
1587	else
1588		reg = data->auto_temp[nr][1] - (data->auto_temp[nr][0] & 0x1f);
1589
1590	return sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
1591}
1592
1593static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
1594			     const char *buf, size_t count)
1595{
1596	struct it87_data *data = dev_get_drvdata(dev);
1597	struct sensor_device_attribute_2 *sensor_attr =
1598			to_sensor_dev_attr_2(attr);
1599	int nr = sensor_attr->nr;
1600	int point = sensor_attr->index;
1601	long val;
1602	int reg;
1603
1604	if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1605		return -EINVAL;
1606
1607	mutex_lock(&data->update_lock);
1608	if (has_newer_autopwm(data) && !point) {
1609		reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
1610		reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
1611		data->auto_temp[nr][0] = reg;
1612		it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
1613	} else {
1614		reg = TEMP_TO_REG(val);
1615		data->auto_temp[nr][point] = reg;
1616		if (has_newer_autopwm(data))
1617			point--;
1618		it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
1619	}
1620	mutex_unlock(&data->update_lock);
1621	return count;
1622}
1623
1624static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1625static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1626			    0, 1);
1627static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1628			  set_fan_div, 0);
1629
1630static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1631static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1632			    1, 1);
1633static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1634			  set_fan_div, 1);
1635
1636static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1637static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1638			    2, 1);
1639static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1640			  set_fan_div, 2);
1641
1642static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1643static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1644			    3, 1);
1645
1646static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1647static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1648			    4, 1);
1649
1650static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1651static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1652			    5, 1);
1653
1654static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1655			  show_pwm_enable, set_pwm_enable, 0);
1656static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1657static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
1658			  set_pwm_freq, 0);
1659static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
1660			  show_pwm_temp_map, set_pwm_temp_map, 0);
1661static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1662			    show_auto_pwm, set_auto_pwm, 0, 0);
1663static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1664			    show_auto_pwm, set_auto_pwm, 0, 1);
1665static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1666			    show_auto_pwm, set_auto_pwm, 0, 2);
1667static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1668			    show_auto_pwm, NULL, 0, 3);
1669static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1670			    show_auto_temp, set_auto_temp, 0, 1);
1671static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1672			    show_auto_temp, set_auto_temp, 0, 0);
1673static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1674			    show_auto_temp, set_auto_temp, 0, 2);
1675static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1676			    show_auto_temp, set_auto_temp, 0, 3);
1677static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1678			    show_auto_temp, set_auto_temp, 0, 4);
1679static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
1680			    show_auto_pwm, set_auto_pwm, 0, 0);
1681static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
1682			  show_auto_pwm_slope, set_auto_pwm_slope, 0);
1683
1684static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1685			  show_pwm_enable, set_pwm_enable, 1);
1686static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1687static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
1688static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
1689			  show_pwm_temp_map, set_pwm_temp_map, 1);
1690static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1691			    show_auto_pwm, set_auto_pwm, 1, 0);
1692static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1693			    show_auto_pwm, set_auto_pwm, 1, 1);
1694static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1695			    show_auto_pwm, set_auto_pwm, 1, 2);
1696static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1697			    show_auto_pwm, NULL, 1, 3);
1698static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1699			    show_auto_temp, set_auto_temp, 1, 1);
1700static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1701			    show_auto_temp, set_auto_temp, 1, 0);
1702static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1703			    show_auto_temp, set_auto_temp, 1, 2);
1704static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1705			    show_auto_temp, set_auto_temp, 1, 3);
1706static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1707			    show_auto_temp, set_auto_temp, 1, 4);
1708static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
1709			    show_auto_pwm, set_auto_pwm, 1, 0);
1710static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
1711			  show_auto_pwm_slope, set_auto_pwm_slope, 1);
1712
1713static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1714			  show_pwm_enable, set_pwm_enable, 2);
1715static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1716static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
1717static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
1718			  show_pwm_temp_map, set_pwm_temp_map, 2);
1719static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1720			    show_auto_pwm, set_auto_pwm, 2, 0);
1721static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1722			    show_auto_pwm, set_auto_pwm, 2, 1);
1723static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1724			    show_auto_pwm, set_auto_pwm, 2, 2);
1725static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1726			    show_auto_pwm, NULL, 2, 3);
1727static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1728			    show_auto_temp, set_auto_temp, 2, 1);
1729static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1730			    show_auto_temp, set_auto_temp, 2, 0);
1731static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1732			    show_auto_temp, set_auto_temp, 2, 2);
1733static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1734			    show_auto_temp, set_auto_temp, 2, 3);
1735static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1736			    show_auto_temp, set_auto_temp, 2, 4);
1737static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
1738			    show_auto_pwm, set_auto_pwm, 2, 0);
1739static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
1740			  show_auto_pwm_slope, set_auto_pwm_slope, 2);
1741
1742static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
1743			  show_pwm_enable, set_pwm_enable, 3);
1744static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
1745static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
1746static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
1747			  show_pwm_temp_map, set_pwm_temp_map, 3);
1748static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
1749			    show_auto_temp, set_auto_temp, 2, 1);
1750static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1751			    show_auto_temp, set_auto_temp, 2, 0);
1752static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
1753			    show_auto_temp, set_auto_temp, 2, 2);
1754static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
1755			    show_auto_temp, set_auto_temp, 2, 3);
1756static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
1757			    show_auto_pwm, set_auto_pwm, 3, 0);
1758static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
1759			  show_auto_pwm_slope, set_auto_pwm_slope, 3);
1760
1761static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
1762			  show_pwm_enable, set_pwm_enable, 4);
1763static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
1764static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
1765static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
1766			  show_pwm_temp_map, set_pwm_temp_map, 4);
1767static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
1768			    show_auto_temp, set_auto_temp, 2, 1);
1769static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1770			    show_auto_temp, set_auto_temp, 2, 0);
1771static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
1772			    show_auto_temp, set_auto_temp, 2, 2);
1773static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
1774			    show_auto_temp, set_auto_temp, 2, 3);
1775static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
1776			    show_auto_pwm, set_auto_pwm, 4, 0);
1777static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
1778			  show_auto_pwm_slope, set_auto_pwm_slope, 4);
1779
1780static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
1781			  show_pwm_enable, set_pwm_enable, 5);
1782static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
1783static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
1784static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
1785			  show_pwm_temp_map, set_pwm_temp_map, 5);
1786static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
1787			    show_auto_temp, set_auto_temp, 2, 1);
1788static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1789			    show_auto_temp, set_auto_temp, 2, 0);
1790static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
1791			    show_auto_temp, set_auto_temp, 2, 2);
1792static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
1793			    show_auto_temp, set_auto_temp, 2, 3);
1794static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
1795			    show_auto_pwm, set_auto_pwm, 5, 0);
1796static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
1797			  show_auto_pwm_slope, set_auto_pwm_slope, 5);
1798
1799/* Alarms */
1800static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1801			   char *buf)
1802{
1803	struct it87_data *data = it87_update_device(dev);
1804
1805	return sprintf(buf, "%u\n", data->alarms);
1806}
1807static DEVICE_ATTR_RO(alarms);
1808
1809static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1810			  char *buf)
1811{
1812	struct it87_data *data = it87_update_device(dev);
1813	int bitnr = to_sensor_dev_attr(attr)->index;
1814
1815	return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1816}
1817
1818static ssize_t clear_intrusion(struct device *dev,
1819			       struct device_attribute *attr, const char *buf,
1820			       size_t count)
1821{
1822	struct it87_data *data = dev_get_drvdata(dev);
1823	int config;
1824	long val;
1825
1826	if (kstrtol(buf, 10, &val) < 0 || val != 0)
1827		return -EINVAL;
1828
1829	mutex_lock(&data->update_lock);
1830	config = it87_read_value(data, IT87_REG_CONFIG);
1831	if (config < 0) {
1832		count = config;
1833	} else {
1834		config |= BIT(5);
1835		it87_write_value(data, IT87_REG_CONFIG, config);
1836		/* Invalidate cache to force re-read */
1837		data->valid = 0;
1838	}
1839	mutex_unlock(&data->update_lock);
1840
1841	return count;
1842}
1843
1844static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1845static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1846static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1847static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1848static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1849static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1850static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1851static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1852static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1853static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1854static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1855static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1856static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1857static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
1858static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1859static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1860static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1861static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1862			  show_alarm, clear_intrusion, 4);
1863
1864static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1865			 char *buf)
1866{
1867	struct it87_data *data = it87_update_device(dev);
1868	int bitnr = to_sensor_dev_attr(attr)->index;
1869
1870	return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1871}
1872
1873static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1874			const char *buf, size_t count)
1875{
1876	int bitnr = to_sensor_dev_attr(attr)->index;
1877	struct it87_data *data = dev_get_drvdata(dev);
1878	long val;
1879
1880	if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
1881		return -EINVAL;
1882
1883	mutex_lock(&data->update_lock);
1884	data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1885	if (val)
1886		data->beeps |= BIT(bitnr);
1887	else
1888		data->beeps &= ~BIT(bitnr);
1889	it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1890	mutex_unlock(&data->update_lock);
1891	return count;
1892}
1893
1894static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1895			  show_beep, set_beep, 1);
1896static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1897static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1898static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1899static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1900static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1901static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1902static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1903/* fanX_beep writability is set later */
1904static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1905static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1906static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1907static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1908static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1909static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
1910static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1911			  show_beep, set_beep, 2);
1912static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1913static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1914
1915static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1916			char *buf)
1917{
1918	struct it87_data *data = dev_get_drvdata(dev);
1919
1920	return sprintf(buf, "%u\n", data->vrm);
1921}
1922
1923static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1924			 const char *buf, size_t count)
1925{
1926	struct it87_data *data = dev_get_drvdata(dev);
1927	unsigned long val;
1928
1929	if (kstrtoul(buf, 10, &val) < 0)
1930		return -EINVAL;
1931
1932	data->vrm = val;
1933
1934	return count;
1935}
1936static DEVICE_ATTR_RW(vrm);
1937
1938static ssize_t cpu0_vid_show(struct device *dev,
1939			     struct device_attribute *attr, char *buf)
1940{
1941	struct it87_data *data = it87_update_device(dev);
1942
1943	return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
1944}
1945static DEVICE_ATTR_RO(cpu0_vid);
1946
1947static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1948			  char *buf)
1949{
1950	static const char * const labels[] = {
1951		"+5V",
1952		"5VSB",
1953		"Vbat",
1954		"AVCC",
1955	};
1956	static const char * const labels_it8721[] = {
1957		"+3.3V",
1958		"3VSB",
1959		"Vbat",
1960		"+3.3V",
1961	};
1962	struct it87_data *data = dev_get_drvdata(dev);
1963	int nr = to_sensor_dev_attr(attr)->index;
1964	const char *label;
1965
1966	if (has_vin3_5v(data) && nr == 0)
1967		label = labels[0];
1968	else if (has_12mv_adc(data) || has_10_9mv_adc(data))
1969		label = labels_it8721[nr];
1970	else
1971		label = labels[nr];
1972
1973	return sprintf(buf, "%s\n", label);
1974}
1975static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1976static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1977static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1978/* AVCC3 */
1979static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
1980
1981static umode_t it87_in_is_visible(struct kobject *kobj,
1982				  struct attribute *attr, int index)
1983{
1984	struct device *dev = container_of(kobj, struct device, kobj);
1985	struct it87_data *data = dev_get_drvdata(dev);
1986	int i = index / 5;	/* voltage index */
1987	int a = index % 5;	/* attribute index */
1988
1989	if (index >= 40) {	/* in8 and higher only have input attributes */
1990		i = index - 40 + 8;
1991		a = 0;
1992	}
1993
1994	if (!(data->has_in & BIT(i)))
1995		return 0;
1996
1997	if (a == 4 && !data->has_beep)
1998		return 0;
1999
2000	return attr->mode;
2001}
2002
2003static struct attribute *it87_attributes_in[] = {
2004	&sensor_dev_attr_in0_input.dev_attr.attr,
2005	&sensor_dev_attr_in0_min.dev_attr.attr,
2006	&sensor_dev_attr_in0_max.dev_attr.attr,
2007	&sensor_dev_attr_in0_alarm.dev_attr.attr,
2008	&sensor_dev_attr_in0_beep.dev_attr.attr,	/* 4 */
2009
2010	&sensor_dev_attr_in1_input.dev_attr.attr,
2011	&sensor_dev_attr_in1_min.dev_attr.attr,
2012	&sensor_dev_attr_in1_max.dev_attr.attr,
2013	&sensor_dev_attr_in1_alarm.dev_attr.attr,
2014	&sensor_dev_attr_in1_beep.dev_attr.attr,	/* 9 */
2015
2016	&sensor_dev_attr_in2_input.dev_attr.attr,
2017	&sensor_dev_attr_in2_min.dev_attr.attr,
2018	&sensor_dev_attr_in2_max.dev_attr.attr,
2019	&sensor_dev_attr_in2_alarm.dev_attr.attr,
2020	&sensor_dev_attr_in2_beep.dev_attr.attr,	/* 14 */
2021
2022	&sensor_dev_attr_in3_input.dev_attr.attr,
2023	&sensor_dev_attr_in3_min.dev_attr.attr,
2024	&sensor_dev_attr_in3_max.dev_attr.attr,
2025	&sensor_dev_attr_in3_alarm.dev_attr.attr,
2026	&sensor_dev_attr_in3_beep.dev_attr.attr,	/* 19 */
2027
2028	&sensor_dev_attr_in4_input.dev_attr.attr,
2029	&sensor_dev_attr_in4_min.dev_attr.attr,
2030	&sensor_dev_attr_in4_max.dev_attr.attr,
2031	&sensor_dev_attr_in4_alarm.dev_attr.attr,
2032	&sensor_dev_attr_in4_beep.dev_attr.attr,	/* 24 */
2033
2034	&sensor_dev_attr_in5_input.dev_attr.attr,
2035	&sensor_dev_attr_in5_min.dev_attr.attr,
2036	&sensor_dev_attr_in5_max.dev_attr.attr,
2037	&sensor_dev_attr_in5_alarm.dev_attr.attr,
2038	&sensor_dev_attr_in5_beep.dev_attr.attr,	/* 29 */
2039
2040	&sensor_dev_attr_in6_input.dev_attr.attr,
2041	&sensor_dev_attr_in6_min.dev_attr.attr,
2042	&sensor_dev_attr_in6_max.dev_attr.attr,
2043	&sensor_dev_attr_in6_alarm.dev_attr.attr,
2044	&sensor_dev_attr_in6_beep.dev_attr.attr,	/* 34 */
2045
2046	&sensor_dev_attr_in7_input.dev_attr.attr,
2047	&sensor_dev_attr_in7_min.dev_attr.attr,
2048	&sensor_dev_attr_in7_max.dev_attr.attr,
2049	&sensor_dev_attr_in7_alarm.dev_attr.attr,
2050	&sensor_dev_attr_in7_beep.dev_attr.attr,	/* 39 */
2051
2052	&sensor_dev_attr_in8_input.dev_attr.attr,	/* 40 */
2053	&sensor_dev_attr_in9_input.dev_attr.attr,
2054	&sensor_dev_attr_in10_input.dev_attr.attr,
2055	&sensor_dev_attr_in11_input.dev_attr.attr,
2056	&sensor_dev_attr_in12_input.dev_attr.attr,
2057	NULL
2058};
2059
2060static const struct attribute_group it87_group_in = {
2061	.attrs = it87_attributes_in,
2062	.is_visible = it87_in_is_visible,
2063};
2064
2065static umode_t it87_temp_is_visible(struct kobject *kobj,
2066				    struct attribute *attr, int index)
2067{
2068	struct device *dev = container_of(kobj, struct device, kobj);
2069	struct it87_data *data = dev_get_drvdata(dev);
2070	int i = index / 7;	/* temperature index */
2071	int a = index % 7;	/* attribute index */
2072
2073	if (index >= 21) {
2074		i = index - 21 + 3;
2075		a = 0;
2076	}
2077
2078	if (!(data->has_temp & BIT(i)))
2079		return 0;
2080
2081	if (a == 5 && !has_temp_offset(data))
2082		return 0;
2083
2084	if (a == 6 && !data->has_beep)
2085		return 0;
2086
2087	return attr->mode;
2088}
2089
2090static struct attribute *it87_attributes_temp[] = {
2091	&sensor_dev_attr_temp1_input.dev_attr.attr,
2092	&sensor_dev_attr_temp1_max.dev_attr.attr,
2093	&sensor_dev_attr_temp1_min.dev_attr.attr,
2094	&sensor_dev_attr_temp1_type.dev_attr.attr,
2095	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
2096	&sensor_dev_attr_temp1_offset.dev_attr.attr,	/* 5 */
2097	&sensor_dev_attr_temp1_beep.dev_attr.attr,	/* 6 */
2098
2099	&sensor_dev_attr_temp2_input.dev_attr.attr,	/* 7 */
2100	&sensor_dev_attr_temp2_max.dev_attr.attr,
2101	&sensor_dev_attr_temp2_min.dev_attr.attr,
2102	&sensor_dev_attr_temp2_type.dev_attr.attr,
2103	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
2104	&sensor_dev_attr_temp2_offset.dev_attr.attr,
2105	&sensor_dev_attr_temp2_beep.dev_attr.attr,
2106
2107	&sensor_dev_attr_temp3_input.dev_attr.attr,	/* 14 */
2108	&sensor_dev_attr_temp3_max.dev_attr.attr,
2109	&sensor_dev_attr_temp3_min.dev_attr.attr,
2110	&sensor_dev_attr_temp3_type.dev_attr.attr,
2111	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
2112	&sensor_dev_attr_temp3_offset.dev_attr.attr,
2113	&sensor_dev_attr_temp3_beep.dev_attr.attr,
2114
2115	&sensor_dev_attr_temp4_input.dev_attr.attr,	/* 21 */
2116	&sensor_dev_attr_temp5_input.dev_attr.attr,
2117	&sensor_dev_attr_temp6_input.dev_attr.attr,
2118	NULL
2119};
2120
2121static const struct attribute_group it87_group_temp = {
2122	.attrs = it87_attributes_temp,
2123	.is_visible = it87_temp_is_visible,
2124};
2125
2126static umode_t it87_is_visible(struct kobject *kobj,
2127			       struct attribute *attr, int index)
2128{
2129	struct device *dev = container_of(kobj, struct device, kobj);
2130	struct it87_data *data = dev_get_drvdata(dev);
2131
2132	if ((index == 2 || index == 3) && !data->has_vid)
2133		return 0;
2134
2135	if (index > 3 && !(data->in_internal & BIT(index - 4)))
2136		return 0;
2137
2138	return attr->mode;
2139}
2140
2141static struct attribute *it87_attributes[] = {
2142	&dev_attr_alarms.attr,
2143	&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
2144	&dev_attr_vrm.attr,				/* 2 */
2145	&dev_attr_cpu0_vid.attr,			/* 3 */
2146	&sensor_dev_attr_in3_label.dev_attr.attr,	/* 4 .. 7 */
2147	&sensor_dev_attr_in7_label.dev_attr.attr,
2148	&sensor_dev_attr_in8_label.dev_attr.attr,
2149	&sensor_dev_attr_in9_label.dev_attr.attr,
2150	NULL
2151};
2152
2153static const struct attribute_group it87_group = {
2154	.attrs = it87_attributes,
2155	.is_visible = it87_is_visible,
2156};
2157
2158static umode_t it87_fan_is_visible(struct kobject *kobj,
2159				   struct attribute *attr, int index)
2160{
2161	struct device *dev = container_of(kobj, struct device, kobj);
2162	struct it87_data *data = dev_get_drvdata(dev);
2163	int i = index / 5;	/* fan index */
2164	int a = index % 5;	/* attribute index */
2165
2166	if (index >= 15) {	/* fan 4..6 don't have divisor attributes */
2167		i = (index - 15) / 4 + 3;
2168		a = (index - 15) % 4;
2169	}
2170
2171	if (!(data->has_fan & BIT(i)))
2172		return 0;
2173
2174	if (a == 3) {				/* beep */
2175		if (!data->has_beep)
2176			return 0;
2177		/* first fan beep attribute is writable */
2178		if (i == __ffs(data->has_fan))
2179			return attr->mode | S_IWUSR;
2180	}
2181
2182	if (a == 4 && has_16bit_fans(data))	/* divisor */
2183		return 0;
2184
2185	return attr->mode;
2186}
2187
2188static struct attribute *it87_attributes_fan[] = {
2189	&sensor_dev_attr_fan1_input.dev_attr.attr,
2190	&sensor_dev_attr_fan1_min.dev_attr.attr,
2191	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
2192	&sensor_dev_attr_fan1_beep.dev_attr.attr,	/* 3 */
2193	&sensor_dev_attr_fan1_div.dev_attr.attr,	/* 4 */
2194
2195	&sensor_dev_attr_fan2_input.dev_attr.attr,
2196	&sensor_dev_attr_fan2_min.dev_attr.attr,
2197	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
2198	&sensor_dev_attr_fan2_beep.dev_attr.attr,
2199	&sensor_dev_attr_fan2_div.dev_attr.attr,	/* 9 */
2200
2201	&sensor_dev_attr_fan3_input.dev_attr.attr,
2202	&sensor_dev_attr_fan3_min.dev_attr.attr,
2203	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
2204	&sensor_dev_attr_fan3_beep.dev_attr.attr,
2205	&sensor_dev_attr_fan3_div.dev_attr.attr,	/* 14 */
2206
2207	&sensor_dev_attr_fan4_input.dev_attr.attr,	/* 15 */
2208	&sensor_dev_attr_fan4_min.dev_attr.attr,
2209	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
2210	&sensor_dev_attr_fan4_beep.dev_attr.attr,
2211
2212	&sensor_dev_attr_fan5_input.dev_attr.attr,	/* 19 */
2213	&sensor_dev_attr_fan5_min.dev_attr.attr,
2214	&sensor_dev_attr_fan5_alarm.dev_attr.attr,
2215	&sensor_dev_attr_fan5_beep.dev_attr.attr,
2216
2217	&sensor_dev_attr_fan6_input.dev_attr.attr,	/* 23 */
2218	&sensor_dev_attr_fan6_min.dev_attr.attr,
2219	&sensor_dev_attr_fan6_alarm.dev_attr.attr,
2220	&sensor_dev_attr_fan6_beep.dev_attr.attr,
2221	NULL
2222};
2223
2224static const struct attribute_group it87_group_fan = {
2225	.attrs = it87_attributes_fan,
2226	.is_visible = it87_fan_is_visible,
2227};
2228
2229static umode_t it87_pwm_is_visible(struct kobject *kobj,
2230				   struct attribute *attr, int index)
2231{
2232	struct device *dev = container_of(kobj, struct device, kobj);
2233	struct it87_data *data = dev_get_drvdata(dev);
2234	int i = index / 4;	/* pwm index */
2235	int a = index % 4;	/* attribute index */
2236
2237	if (!(data->has_pwm & BIT(i)))
2238		return 0;
2239
2240	/* pwmX_auto_channels_temp is only writable if auto pwm is supported */
2241	if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
2242		return attr->mode | S_IWUSR;
2243
2244	/* pwm2_freq is writable if there are two pwm frequency selects */
2245	if (has_pwm_freq2(data) && i == 1 && a == 2)
2246		return attr->mode | S_IWUSR;
2247
2248	return attr->mode;
2249}
2250
2251static struct attribute *it87_attributes_pwm[] = {
2252	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
2253	&sensor_dev_attr_pwm1.dev_attr.attr,
2254	&sensor_dev_attr_pwm1_freq.dev_attr.attr,
2255	&sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
2256
2257	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
2258	&sensor_dev_attr_pwm2.dev_attr.attr,
2259	&sensor_dev_attr_pwm2_freq.dev_attr.attr,
2260	&sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
2261
2262	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
2263	&sensor_dev_attr_pwm3.dev_attr.attr,
2264	&sensor_dev_attr_pwm3_freq.dev_attr.attr,
2265	&sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
2266
2267	&sensor_dev_attr_pwm4_enable.dev_attr.attr,
2268	&sensor_dev_attr_pwm4.dev_attr.attr,
2269	&sensor_dev_attr_pwm4_freq.dev_attr.attr,
2270	&sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
2271
2272	&sensor_dev_attr_pwm5_enable.dev_attr.attr,
2273	&sensor_dev_attr_pwm5.dev_attr.attr,
2274	&sensor_dev_attr_pwm5_freq.dev_attr.attr,
2275	&sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
2276
2277	&sensor_dev_attr_pwm6_enable.dev_attr.attr,
2278	&sensor_dev_attr_pwm6.dev_attr.attr,
2279	&sensor_dev_attr_pwm6_freq.dev_attr.attr,
2280	&sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
2281
2282	NULL
2283};
2284
2285static const struct attribute_group it87_group_pwm = {
2286	.attrs = it87_attributes_pwm,
2287	.is_visible = it87_pwm_is_visible,
2288};
2289
2290static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
2291					struct attribute *attr, int index)
2292{
2293	struct device *dev = container_of(kobj, struct device, kobj);
2294	struct it87_data *data = dev_get_drvdata(dev);
2295	int i = index / 11;	/* pwm index */
2296	int a = index % 11;	/* attribute index */
2297
2298	if (index >= 33) {	/* pwm 4..6 */
2299		i = (index - 33) / 6 + 3;
2300		a = (index - 33) % 6 + 4;
2301	}
2302
2303	if (!(data->has_pwm & BIT(i)))
2304		return 0;
2305
2306	if (has_newer_autopwm(data)) {
2307		if (a < 4)	/* no auto point pwm */
2308			return 0;
2309		if (a == 8)	/* no auto_point4 */
2310			return 0;
2311	}
2312	if (has_old_autopwm(data)) {
2313		if (a >= 9)	/* no pwm_auto_start, pwm_auto_slope */
2314			return 0;
2315	}
2316
2317	return attr->mode;
2318}
2319
2320static struct attribute *it87_attributes_auto_pwm[] = {
2321	&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2322	&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2323	&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2324	&sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2325	&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2326	&sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
2327	&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2328	&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2329	&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2330	&sensor_dev_attr_pwm1_auto_start.dev_attr.attr,
2331	&sensor_dev_attr_pwm1_auto_slope.dev_attr.attr,
2332
2333	&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,	/* 11 */
2334	&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2335	&sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2336	&sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2337	&sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2338	&sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
2339	&sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2340	&sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2341	&sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2342	&sensor_dev_attr_pwm2_auto_start.dev_attr.attr,
2343	&sensor_dev_attr_pwm2_auto_slope.dev_attr.attr,
2344
2345	&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,	/* 22 */
2346	&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
2347	&sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
2348	&sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
2349	&sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
2350	&sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
2351	&sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
2352	&sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
2353	&sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
2354	&sensor_dev_attr_pwm3_auto_start.dev_attr.attr,
2355	&sensor_dev_attr_pwm3_auto_slope.dev_attr.attr,
2356
2357	&sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,	/* 33 */
2358	&sensor_dev_attr_pwm4_auto_point1_temp_hyst.dev_attr.attr,
2359	&sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
2360	&sensor_dev_attr_pwm4_auto_point3_temp.dev_attr.attr,
2361	&sensor_dev_attr_pwm4_auto_start.dev_attr.attr,
2362	&sensor_dev_attr_pwm4_auto_slope.dev_attr.attr,
2363
2364	&sensor_dev_attr_pwm5_auto_point1_temp.dev_attr.attr,
2365	&sensor_dev_attr_pwm5_auto_point1_temp_hyst.dev_attr.attr,
2366	&sensor_dev_attr_pwm5_auto_point2_temp.dev_attr.attr,
2367	&sensor_dev_attr_pwm5_auto_point3_temp.dev_attr.attr,
2368	&sensor_dev_attr_pwm5_auto_start.dev_attr.attr,
2369	&sensor_dev_attr_pwm5_auto_slope.dev_attr.attr,
2370
2371	&sensor_dev_attr_pwm6_auto_point1_temp.dev_attr.attr,
2372	&sensor_dev_attr_pwm6_auto_point1_temp_hyst.dev_attr.attr,
2373	&sensor_dev_attr_pwm6_auto_point2_temp.dev_attr.attr,
2374	&sensor_dev_attr_pwm6_auto_point3_temp.dev_attr.attr,
2375	&sensor_dev_attr_pwm6_auto_start.dev_attr.attr,
2376	&sensor_dev_attr_pwm6_auto_slope.dev_attr.attr,
2377
2378	NULL,
2379};
2380
2381static const struct attribute_group it87_group_auto_pwm = {
2382	.attrs = it87_attributes_auto_pwm,
2383	.is_visible = it87_auto_pwm_is_visible,
2384};
2385
2386/* SuperIO detection - will change isa_address if a chip is found */
2387static int __init it87_find(int sioaddr, unsigned short *address,
2388			    struct it87_sio_data *sio_data)
2389{
2390	int err;
2391	u16 chip_type;
2392	const char *board_vendor, *board_name;
2393	const struct it87_devices *config;
2394
2395	err = superio_enter(sioaddr);
2396	if (err)
2397		return err;
2398
2399	err = -ENODEV;
2400	chip_type = force_id ? force_id : superio_inw(sioaddr, DEVID);
2401
2402	switch (chip_type) {
2403	case IT8705F_DEVID:
2404		sio_data->type = it87;
2405		break;
2406	case IT8712F_DEVID:
2407		sio_data->type = it8712;
2408		break;
2409	case IT8716F_DEVID:
2410	case IT8726F_DEVID:
2411		sio_data->type = it8716;
2412		break;
2413	case IT8718F_DEVID:
2414		sio_data->type = it8718;
2415		break;
2416	case IT8720F_DEVID:
2417		sio_data->type = it8720;
2418		break;
2419	case IT8721F_DEVID:
2420		sio_data->type = it8721;
2421		break;
2422	case IT8728F_DEVID:
2423		sio_data->type = it8728;
2424		break;
2425	case IT8732F_DEVID:
2426		sio_data->type = it8732;
2427		break;
2428	case IT8792E_DEVID:
2429		sio_data->type = it8792;
2430		break;
2431	case IT8771E_DEVID:
2432		sio_data->type = it8771;
2433		break;
2434	case IT8772E_DEVID:
2435		sio_data->type = it8772;
2436		break;
2437	case IT8781F_DEVID:
2438		sio_data->type = it8781;
2439		break;
2440	case IT8782F_DEVID:
2441		sio_data->type = it8782;
2442		break;
2443	case IT8783E_DEVID:
2444		sio_data->type = it8783;
2445		break;
2446	case IT8786E_DEVID:
2447		sio_data->type = it8786;
2448		break;
2449	case IT8790E_DEVID:
2450		sio_data->type = it8790;
2451		break;
2452	case IT8603E_DEVID:
2453	case IT8623E_DEVID:
2454		sio_data->type = it8603;
2455		break;
2456	case IT8620E_DEVID:
2457		sio_data->type = it8620;
2458		break;
2459	case IT8622E_DEVID:
2460		sio_data->type = it8622;
2461		break;
2462	case IT8628E_DEVID:
2463		sio_data->type = it8628;
2464		break;
2465	case 0xffff:	/* No device at all */
2466		goto exit;
2467	default:
2468		pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
2469		goto exit;
2470	}
2471
2472	superio_select(sioaddr, PME);
2473	if (!(superio_inb(sioaddr, IT87_ACT_REG) & 0x01)) {
2474		pr_info("Device not activated, skipping\n");
2475		goto exit;
2476	}
2477
2478	*address = superio_inw(sioaddr, IT87_BASE_REG) & ~(IT87_EXTENT - 1);
2479	if (*address == 0) {
2480		pr_info("Base address not set, skipping\n");
2481		goto exit;
2482	}
2483
2484	err = 0;
2485	sio_data->sioaddr = sioaddr;
2486	sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
2487	pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
2488		it87_devices[sio_data->type].suffix,
2489		*address, sio_data->revision);
2490
2491	config = &it87_devices[sio_data->type];
2492
2493	/* in7 (VSB or VCCH5V) is always internal on some chips */
2494	if (has_in7_internal(config))
2495		sio_data->internal |= BIT(1);
2496
2497	/* in8 (Vbat) is always internal */
2498	sio_data->internal |= BIT(2);
2499
2500	/* in9 (AVCC3), always internal if supported */
2501	if (has_avcc3(config))
2502		sio_data->internal |= BIT(3); /* in9 is AVCC */
2503	else
2504		sio_data->skip_in |= BIT(9);
2505
2506	if (!has_five_pwm(config))
2507		sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
2508	else if (!has_six_pwm(config))
2509		sio_data->skip_pwm |= BIT(5);
2510
2511	if (!has_vid(config))
2512		sio_data->skip_vid = 1;
2513
2514	/* Read GPIO config and VID value from LDN 7 (GPIO) */
2515	if (sio_data->type == it87) {
2516		/* The IT8705F has a different LD number for GPIO */
2517		superio_select(sioaddr, 5);
2518		sio_data->beep_pin = superio_inb(sioaddr,
2519						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2520	} else if (sio_data->type == it8783) {
2521		int reg25, reg27, reg2a, reg2c, regef;
2522
2523		superio_select(sioaddr, GPIO);
2524
2525		reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2526		reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2527		reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
2528		reg2c = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2529		regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
2530
2531		/* Check if fan3 is there or not */
2532		if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
2533			sio_data->skip_fan |= BIT(2);
2534		if ((reg25 & BIT(4)) ||
2535		    (!(reg2a & BIT(1)) && (regef & BIT(0))))
2536			sio_data->skip_pwm |= BIT(2);
2537
2538		/* Check if fan2 is there or not */
2539		if (reg27 & BIT(7))
2540			sio_data->skip_fan |= BIT(1);
2541		if (reg27 & BIT(3))
2542			sio_data->skip_pwm |= BIT(1);
2543
2544		/* VIN5 */
2545		if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
2546			sio_data->skip_in |= BIT(5); /* No VIN5 */
2547
2548		/* VIN6 */
2549		if (reg27 & BIT(1))
2550			sio_data->skip_in |= BIT(6); /* No VIN6 */
2551
2552		/*
2553		 * VIN7
2554		 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2555		 */
2556		if (reg27 & BIT(2)) {
2557			/*
2558			 * The data sheet is a bit unclear regarding the
2559			 * internal voltage divider for VCCH5V. It says
2560			 * "This bit enables and switches VIN7 (pin 91) to the
2561			 * internal voltage divider for VCCH5V".
2562			 * This is different to other chips, where the internal
2563			 * voltage divider would connect VIN7 to an internal
2564			 * voltage source. Maybe that is the case here as well.
2565			 *
2566			 * Since we don't know for sure, re-route it if that is
2567			 * not the case, and ask the user to report if the
2568			 * resulting voltage is sane.
2569			 */
2570			if (!(reg2c & BIT(1))) {
2571				reg2c |= BIT(1);
2572				superio_outb(sioaddr, IT87_SIO_PINX2_REG,
2573					     reg2c);
2574				sio_data->need_in7_reroute = true;
2575				pr_notice("Routing internal VCCH5V to in7.\n");
2576			}
2577			pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2578			pr_notice("Please report if it displays a reasonable voltage.\n");
2579		}
2580
2581		if (reg2c & BIT(0))
2582			sio_data->internal |= BIT(0);
2583		if (reg2c & BIT(1))
2584			sio_data->internal |= BIT(1);
2585
2586		sio_data->beep_pin = superio_inb(sioaddr,
2587						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2588	} else if (sio_data->type == it8603) {
2589		int reg27, reg29;
2590
2591		superio_select(sioaddr, GPIO);
2592
2593		reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2594
2595		/* Check if fan3 is there or not */
2596		if (reg27 & BIT(6))
2597			sio_data->skip_pwm |= BIT(2);
2598		if (reg27 & BIT(7))
2599			sio_data->skip_fan |= BIT(2);
2600
2601		/* Check if fan2 is there or not */
2602		reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2603		if (reg29 & BIT(1))
2604			sio_data->skip_pwm |= BIT(1);
2605		if (reg29 & BIT(2))
2606			sio_data->skip_fan |= BIT(1);
2607
2608		sio_data->skip_in |= BIT(5); /* No VIN5 */
2609		sio_data->skip_in |= BIT(6); /* No VIN6 */
2610
2611		sio_data->beep_pin = superio_inb(sioaddr,
2612						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2613	} else if (sio_data->type == it8620 || sio_data->type == it8628) {
2614		int reg;
2615
2616		superio_select(sioaddr, GPIO);
2617
2618		/* Check for pwm5 */
2619		reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2620		if (reg & BIT(6))
2621			sio_data->skip_pwm |= BIT(4);
2622
2623		/* Check for fan4, fan5 */
2624		reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2625		if (!(reg & BIT(5)))
2626			sio_data->skip_fan |= BIT(3);
2627		if (!(reg & BIT(4)))
2628			sio_data->skip_fan |= BIT(4);
2629
2630		/* Check for pwm3, fan3 */
2631		reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2632		if (reg & BIT(6))
2633			sio_data->skip_pwm |= BIT(2);
2634		if (reg & BIT(7))
2635			sio_data->skip_fan |= BIT(2);
2636
2637		/* Check for pwm4 */
2638		reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
2639		if (reg & BIT(2))
2640			sio_data->skip_pwm |= BIT(3);
2641
2642		/* Check for pwm2, fan2 */
2643		reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2644		if (reg & BIT(1))
2645			sio_data->skip_pwm |= BIT(1);
2646		if (reg & BIT(2))
2647			sio_data->skip_fan |= BIT(1);
2648		/* Check for pwm6, fan6 */
2649		if (!(reg & BIT(7))) {
2650			sio_data->skip_pwm |= BIT(5);
2651			sio_data->skip_fan |= BIT(5);
2652		}
2653
2654		/* Check if AVCC is on VIN3 */
2655		reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2656		if (reg & BIT(0))
2657			sio_data->internal |= BIT(0);
2658		else
2659			sio_data->skip_in |= BIT(9);
2660
2661		sio_data->beep_pin = superio_inb(sioaddr,
2662						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2663	} else if (sio_data->type == it8622) {
2664		int reg;
2665
2666		superio_select(sioaddr, GPIO);
2667
2668		/* Check for pwm4, fan4 */
2669		reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2670		if (reg & BIT(6))
2671			sio_data->skip_fan |= BIT(3);
2672		if (reg & BIT(5))
2673			sio_data->skip_pwm |= BIT(3);
2674
2675		/* Check for pwm3, fan3, pwm5, fan5 */
2676		reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2677		if (reg & BIT(6))
2678			sio_data->skip_pwm |= BIT(2);
2679		if (reg & BIT(7))
2680			sio_data->skip_fan |= BIT(2);
2681		if (reg & BIT(3))
2682			sio_data->skip_pwm |= BIT(4);
2683		if (reg & BIT(1))
2684			sio_data->skip_fan |= BIT(4);
2685
2686		/* Check for pwm2, fan2 */
2687		reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2688		if (reg & BIT(1))
2689			sio_data->skip_pwm |= BIT(1);
2690		if (reg & BIT(2))
2691			sio_data->skip_fan |= BIT(1);
2692
2693		/* Check for AVCC */
2694		reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2695		if (!(reg & BIT(0)))
2696			sio_data->skip_in |= BIT(9);
2697
2698		sio_data->beep_pin = superio_inb(sioaddr,
2699						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2700	} else {
2701		int reg;
2702		bool uart6;
2703
2704		superio_select(sioaddr, GPIO);
2705
2706		/* Check for fan4, fan5 */
2707		if (has_five_fans(config)) {
2708			reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2709			switch (sio_data->type) {
2710			case it8718:
2711				if (reg & BIT(5))
2712					sio_data->skip_fan |= BIT(3);
2713				if (reg & BIT(4))
2714					sio_data->skip_fan |= BIT(4);
2715				break;
2716			case it8720:
2717			case it8721:
2718			case it8728:
2719				if (!(reg & BIT(5)))
2720					sio_data->skip_fan |= BIT(3);
2721				if (!(reg & BIT(4)))
2722					sio_data->skip_fan |= BIT(4);
2723				break;
2724			default:
2725				break;
2726			}
2727		}
2728
2729		reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2730		if (!sio_data->skip_vid) {
2731			/* We need at least 4 VID pins */
2732			if (reg & 0x0f) {
2733				pr_info("VID is disabled (pins used for GPIO)\n");
2734				sio_data->skip_vid = 1;
2735			}
2736		}
2737
2738		/* Check if fan3 is there or not */
2739		if (reg & BIT(6))
2740			sio_data->skip_pwm |= BIT(2);
2741		if (reg & BIT(7))
2742			sio_data->skip_fan |= BIT(2);
2743
2744		/* Check if fan2 is there or not */
2745		reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2746		if (reg & BIT(1))
2747			sio_data->skip_pwm |= BIT(1);
2748		if (reg & BIT(2))
2749			sio_data->skip_fan |= BIT(1);
2750
2751		if ((sio_data->type == it8718 || sio_data->type == it8720) &&
2752		    !(sio_data->skip_vid))
2753			sio_data->vid_value = superio_inb(sioaddr,
2754							  IT87_SIO_VID_REG);
2755
2756		reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2757
2758		uart6 = sio_data->type == it8782 && (reg & BIT(2));
2759
2760		/*
2761		 * The IT8720F has no VIN7 pin, so VCCH5V should always be
2762		 * routed internally to VIN7 with an internal divider.
2763		 * Curiously, there still is a configuration bit to control
2764		 * this, which means it can be set incorrectly. And even
2765		 * more curiously, many boards out there are improperly
2766		 * configured, even though the IT8720F datasheet claims
2767		 * that the internal routing of VCCH5V to VIN7 is the default
2768		 * setting. So we force the internal routing in this case.
2769		 *
2770		 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
2771		 * If UART6 is enabled, re-route VIN7 to the internal divider
2772		 * if that is not already the case.
2773		 */
2774		if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
2775			reg |= BIT(1);
2776			superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
2777			sio_data->need_in7_reroute = true;
2778			pr_notice("Routing internal VCCH5V to in7\n");
2779		}
2780		if (reg & BIT(0))
2781			sio_data->internal |= BIT(0);
2782		if (reg & BIT(1))
2783			sio_data->internal |= BIT(1);
2784
2785		/*
2786		 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2787		 * While VIN7 can be routed to the internal voltage divider,
2788		 * VIN5 and VIN6 are not available if UART6 is enabled.
2789		 *
2790		 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2791		 * is the temperature source. Since we can not read the
2792		 * temperature source here, skip_temp is preliminary.
2793		 */
2794		if (uart6) {
2795			sio_data->skip_in |= BIT(5) | BIT(6);
2796			sio_data->skip_temp |= BIT(2);
2797		}
2798
2799		sio_data->beep_pin = superio_inb(sioaddr,
2800						 IT87_SIO_BEEP_PIN_REG) & 0x3f;
2801	}
2802	if (sio_data->beep_pin)
2803		pr_info("Beeping is supported\n");
2804
2805	/* Disable specific features based on DMI strings */
2806	board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2807	board_name = dmi_get_system_info(DMI_BOARD_NAME);
2808	if (board_vendor && board_name) {
2809		if (strcmp(board_vendor, "nVIDIA") == 0 &&
2810		    strcmp(board_name, "FN68PT") == 0) {
2811			/*
2812			 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2813			 * connected to a fan, but to something else. One user
2814			 * has reported instant system power-off when changing
2815			 * the PWM2 duty cycle, so we disable it.
2816			 * I use the board name string as the trigger in case
2817			 * the same board is ever used in other systems.
2818			 */
2819			pr_info("Disabling pwm2 due to hardware constraints\n");
2820			sio_data->skip_pwm = BIT(1);
2821		}
2822	}
2823
2824exit:
2825	superio_exit(sioaddr);
2826	return err;
2827}
2828
2829/*
2830 * Some chips seem to have default value 0xff for all limit
2831 * registers. For low voltage limits it makes no sense and triggers
2832 * alarms, so change to 0 instead. For high temperature limits, it
2833 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2834 * but is still confusing, so change to 127 degrees C.
2835 */
2836static void it87_check_limit_regs(struct it87_data *data)
2837{
2838	int i, reg;
2839
2840	for (i = 0; i < NUM_VIN_LIMIT; i++) {
2841		reg = it87_read_value(data, IT87_REG_VIN_MIN(i));
2842		if (reg == 0xff)
2843			it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2844	}
2845	for (i = 0; i < NUM_TEMP_LIMIT; i++) {
2846		reg = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2847		if (reg == 0xff)
2848			it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2849	}
2850}
2851
2852/* Check if voltage monitors are reset manually or by some reason */
2853static void it87_check_voltage_monitors_reset(struct it87_data *data)
2854{
2855	int reg;
2856
2857	reg = it87_read_value(data, IT87_REG_VIN_ENABLE);
2858	if ((reg & 0xff) == 0) {
2859		/* Enable all voltage monitors */
2860		it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2861	}
2862}
2863
2864/* Check if tachometers are reset manually or by some reason */
2865static void it87_check_tachometers_reset(struct platform_device *pdev)
2866{
2867	struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2868	struct it87_data *data = platform_get_drvdata(pdev);
2869	u8 mask, fan_main_ctrl;
2870
2871	mask = 0x70 & ~(sio_data->skip_fan << 4);
2872	fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2873	if ((fan_main_ctrl & mask) == 0) {
2874		/* Enable all fan tachometers */
2875		fan_main_ctrl |= mask;
2876		it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2877				 fan_main_ctrl);
2878	}
2879}
2880
2881/* Set tachometers to 16-bit mode if needed */
2882static void it87_check_tachometers_16bit_mode(struct platform_device *pdev)
2883{
2884	struct it87_data *data = platform_get_drvdata(pdev);
2885	int reg;
2886
2887	if (!has_fan16_config(data))
2888		return;
2889
2890	reg = it87_read_value(data, IT87_REG_FAN_16BIT);
2891	if (~reg & 0x07 & data->has_fan) {
2892		dev_dbg(&pdev->dev,
2893			"Setting fan1-3 to 16-bit mode\n");
2894		it87_write_value(data, IT87_REG_FAN_16BIT,
2895				 reg | 0x07);
2896	}
2897}
2898
2899static void it87_start_monitoring(struct it87_data *data)
2900{
2901	it87_write_value(data, IT87_REG_CONFIG,
2902			 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2903			 | (update_vbat ? 0x41 : 0x01));
2904}
2905
2906/* Called when we have found a new IT87. */
2907static void it87_init_device(struct platform_device *pdev)
2908{
2909	struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2910	struct it87_data *data = platform_get_drvdata(pdev);
2911	int tmp, i;
2912
2913	/*
2914	 * For each PWM channel:
2915	 * - If it is in automatic mode, setting to manual mode should set
2916	 *   the fan to full speed by default.
2917	 * - If it is in manual mode, we need a mapping to temperature
2918	 *   channels to use when later setting to automatic mode later.
2919	 *   Use a 1:1 mapping by default (we are clueless.)
2920	 * In both cases, the value can (and should) be changed by the user
2921	 * prior to switching to a different mode.
2922	 * Note that this is no longer needed for the IT8721F and later, as
2923	 * these have separate registers for the temperature mapping and the
2924	 * manual duty cycle.
2925	 */
2926	for (i = 0; i < NUM_AUTO_PWM; i++) {
2927		data->pwm_temp_map[i] = i;
2928		data->pwm_duty[i] = 0x7f;	/* Full speed */
2929		data->auto_pwm[i][3] = 0x7f;	/* Full speed, hard-coded */
2930	}
2931
2932	it87_check_limit_regs(data);
2933
2934	/*
2935	 * Temperature channels are not forcibly enabled, as they can be
2936	 * set to two different sensor types and we can't guess which one
2937	 * is correct for a given system. These channels can be enabled at
2938	 * run-time through the temp{1-3}_type sysfs accessors if needed.
2939	 */
2940
2941	it87_check_voltage_monitors_reset(data);
2942
2943	it87_check_tachometers_reset(pdev);
2944
2945	data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2946	data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2947
2948	it87_check_tachometers_16bit_mode(pdev);
2949
2950	/* Check for additional fans */
2951	if (has_five_fans(data)) {
2952		tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2953
2954		if (tmp & BIT(4))
2955			data->has_fan |= BIT(3); /* fan4 enabled */
2956		if (tmp & BIT(5))
2957			data->has_fan |= BIT(4); /* fan5 enabled */
2958		if (has_six_fans(data) && (tmp & BIT(2)))
2959			data->has_fan |= BIT(5); /* fan6 enabled */
2960	}
2961
2962	/* Fan input pins may be used for alternative functions */
2963	data->has_fan &= ~sio_data->skip_fan;
2964
2965	/* Check if pwm5, pwm6 are enabled */
2966	if (has_six_pwm(data)) {
2967		/* The following code may be IT8620E specific */
2968		tmp = it87_read_value(data, IT87_REG_FAN_DIV);
2969		if ((tmp & 0xc0) == 0xc0)
2970			sio_data->skip_pwm |= BIT(4);
2971		if (!(tmp & BIT(3)))
2972			sio_data->skip_pwm |= BIT(5);
2973	}
2974
2975	it87_start_monitoring(data);
2976}
2977
2978/* Return 1 if and only if the PWM interface is safe to use */
2979static int it87_check_pwm(struct device *dev)
2980{
2981	struct it87_data *data = dev_get_drvdata(dev);
2982	/*
2983	 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2984	 * and polarity set to active low is sign that this is the case so we
2985	 * disable pwm control to protect the user.
2986	 */
2987	int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2988
2989	if ((tmp & 0x87) == 0) {
2990		if (fix_pwm_polarity) {
2991			/*
2992			 * The user asks us to attempt a chip reconfiguration.
2993			 * This means switching to active high polarity and
2994			 * inverting all fan speed values.
2995			 */
2996			int i;
2997			u8 pwm[3];
2998
2999			for (i = 0; i < ARRAY_SIZE(pwm); i++)
3000				pwm[i] = it87_read_value(data,
3001							 IT87_REG_PWM[i]);
3002
3003			/*
3004			 * If any fan is in automatic pwm mode, the polarity
3005			 * might be correct, as suspicious as it seems, so we
3006			 * better don't change anything (but still disable the
3007			 * PWM interface).
3008			 */
3009			if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
3010				dev_info(dev,
3011					 "Reconfiguring PWM to active high polarity\n");
3012				it87_write_value(data, IT87_REG_FAN_CTL,
3013						 tmp | 0x87);
3014				for (i = 0; i < 3; i++)
3015					it87_write_value(data,
3016							 IT87_REG_PWM[i],
3017							 0x7f & ~pwm[i]);
3018				return 1;
3019			}
3020
3021			dev_info(dev,
3022				 "PWM configuration is too broken to be fixed\n");
3023		}
3024
3025		return 0;
3026	} else if (fix_pwm_polarity) {
3027		dev_info(dev,
3028			 "PWM configuration looks sane, won't touch\n");
3029	}
3030
3031	return 1;
3032}
3033
3034static int it87_probe(struct platform_device *pdev)
3035{
3036	struct it87_data *data;
3037	struct resource *res;
3038	struct device *dev = &pdev->dev;
3039	struct it87_sio_data *sio_data = dev_get_platdata(dev);
3040	int enable_pwm_interface;
3041	struct device *hwmon_dev;
3042
3043	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
3044	if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
3045				 DRVNAME)) {
3046		dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
3047			(unsigned long)res->start,
3048			(unsigned long)(res->start + IT87_EC_EXTENT - 1));
3049		return -EBUSY;
3050	}
3051
3052	data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
3053	if (!data)
3054		return -ENOMEM;
3055
3056	data->addr = res->start;
3057	data->sioaddr = sio_data->sioaddr;
3058	data->type = sio_data->type;
3059	data->features = it87_devices[sio_data->type].features;
3060	data->peci_mask = it87_devices[sio_data->type].peci_mask;
3061	data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
3062	/*
3063	 * IT8705F Datasheet 0.4.1, 3h == Version G.
3064	 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
3065	 * These are the first revisions with 16-bit tachometer support.
3066	 */
3067	switch (data->type) {
3068	case it87:
3069		if (sio_data->revision >= 0x03) {
3070			data->features &= ~FEAT_OLD_AUTOPWM;
3071			data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
3072		}
3073		break;
3074	case it8712:
3075		if (sio_data->revision >= 0x08) {
3076			data->features &= ~FEAT_OLD_AUTOPWM;
3077			data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
3078					  FEAT_FIVE_FANS;
3079		}
3080		break;
3081	default:
3082		break;
3083	}
3084
3085	/* Now, we do the remaining detection. */
3086	if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
3087	    it87_read_value(data, IT87_REG_CHIPID) != 0x90)
3088		return -ENODEV;
3089
3090	platform_set_drvdata(pdev, data);
3091
3092	mutex_init(&data->update_lock);
3093
3094	/* Check PWM configuration */
3095	enable_pwm_interface = it87_check_pwm(dev);
3096	if (!enable_pwm_interface)
3097		dev_info(dev,
3098			 "Detected broken BIOS defaults, disabling PWM interface\n");
3099
3100	/* Starting with IT8721F, we handle scaling of internal voltages */
3101	if (has_12mv_adc(data)) {
3102		if (sio_data->internal & BIT(0))
3103			data->in_scaled |= BIT(3);	/* in3 is AVCC */
3104		if (sio_data->internal & BIT(1))
3105			data->in_scaled |= BIT(7);	/* in7 is VSB */
3106		if (sio_data->internal & BIT(2))
3107			data->in_scaled |= BIT(8);	/* in8 is Vbat */
3108		if (sio_data->internal & BIT(3))
3109			data->in_scaled |= BIT(9);	/* in9 is AVCC */
3110	} else if (sio_data->type == it8781 || sio_data->type == it8782 ||
3111		   sio_data->type == it8783) {
3112		if (sio_data->internal & BIT(0))
3113			data->in_scaled |= BIT(3);	/* in3 is VCC5V */
3114		if (sio_data->internal & BIT(1))
3115			data->in_scaled |= BIT(7);	/* in7 is VCCH5V */
3116	}
3117
3118	data->has_temp = 0x07;
3119	if (sio_data->skip_temp & BIT(2)) {
3120		if (sio_data->type == it8782 &&
3121		    !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
3122			data->has_temp &= ~BIT(2);
3123	}
3124
3125	data->in_internal = sio_data->internal;
3126	data->need_in7_reroute = sio_data->need_in7_reroute;
3127	data->has_in = 0x3ff & ~sio_data->skip_in;
3128
3129	if (has_six_temp(data)) {
3130		u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
3131
3132		/* Check for additional temperature sensors */
3133		if ((reg & 0x03) >= 0x02)
3134			data->has_temp |= BIT(3);
3135		if (((reg >> 2) & 0x03) >= 0x02)
3136			data->has_temp |= BIT(4);
3137		if (((reg >> 4) & 0x03) >= 0x02)
3138			data->has_temp |= BIT(5);
3139
3140		/* Check for additional voltage sensors */
3141		if ((reg & 0x03) == 0x01)
3142			data->has_in |= BIT(10);
3143		if (((reg >> 2) & 0x03) == 0x01)
3144			data->has_in |= BIT(11);
3145		if (((reg >> 4) & 0x03) == 0x01)
3146			data->has_in |= BIT(12);
3147	}
3148
3149	data->has_beep = !!sio_data->beep_pin;
3150
3151	/* Initialize the IT87 chip */
3152	it87_init_device(pdev);
3153
3154	if (!sio_data->skip_vid) {
3155		data->has_vid = true;
3156		data->vrm = vid_which_vrm();
3157		/* VID reading from Super-I/O config space if available */
3158		data->vid = sio_data->vid_value;
3159	}
3160
3161	/* Prepare for sysfs hooks */
3162	data->groups[0] = &it87_group;
3163	data->groups[1] = &it87_group_in;
3164	data->groups[2] = &it87_group_temp;
3165	data->groups[3] = &it87_group_fan;
3166
3167	if (enable_pwm_interface) {
3168		data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
3169		data->has_pwm &= ~sio_data->skip_pwm;
3170
3171		data->groups[4] = &it87_group_pwm;
3172		if (has_old_autopwm(data) || has_newer_autopwm(data))
3173			data->groups[5] = &it87_group_auto_pwm;
3174	}
3175
3176	hwmon_dev = devm_hwmon_device_register_with_groups(dev,
3177					it87_devices[sio_data->type].name,
3178					data, data->groups);
3179	return PTR_ERR_OR_ZERO(hwmon_dev);
3180}
3181
3182static void __maybe_unused it87_resume_sio(struct platform_device *pdev)
3183{
3184	struct it87_data *data = dev_get_drvdata(&pdev->dev);
3185	int err;
3186	int reg2c;
3187
3188	if (!data->need_in7_reroute)
3189		return;
3190
3191	err = superio_enter(data->sioaddr);
3192	if (err) {
3193		dev_warn(&pdev->dev,
3194			 "Unable to enter Super I/O to reroute in7 (%d)",
3195			 err);
3196		return;
3197	}
3198
3199	superio_select(data->sioaddr, GPIO);
3200
3201	reg2c = superio_inb(data->sioaddr, IT87_SIO_PINX2_REG);
3202	if (!(reg2c & BIT(1))) {
3203		dev_dbg(&pdev->dev,
3204			"Routing internal VCCH5V to in7 again");
3205
3206		reg2c |= BIT(1);
3207		superio_outb(data->sioaddr, IT87_SIO_PINX2_REG,
3208			     reg2c);
3209	}
3210
3211	superio_exit(data->sioaddr);
3212}
3213
3214static int __maybe_unused it87_resume(struct device *dev)
3215{
3216	struct platform_device *pdev = to_platform_device(dev);
3217	struct it87_data *data = dev_get_drvdata(dev);
3218
3219	it87_resume_sio(pdev);
3220
3221	mutex_lock(&data->update_lock);
3222
3223	it87_check_pwm(dev);
3224	it87_check_limit_regs(data);
3225	it87_check_voltage_monitors_reset(data);
3226	it87_check_tachometers_reset(pdev);
3227	it87_check_tachometers_16bit_mode(pdev);
3228
3229	it87_start_monitoring(data);
3230
3231	/* force update */
3232	data->valid = 0;
3233
3234	mutex_unlock(&data->update_lock);
3235
3236	it87_update_device(dev);
3237
3238	return 0;
3239}
3240
3241static SIMPLE_DEV_PM_OPS(it87_dev_pm_ops, NULL, it87_resume);
3242
3243static struct platform_driver it87_driver = {
3244	.driver = {
3245		.name	= DRVNAME,
3246		.pm     = &it87_dev_pm_ops,
3247	},
3248	.probe	= it87_probe,
3249};
3250
3251static int __init it87_device_add(int index, unsigned short address,
3252				  const struct it87_sio_data *sio_data)
3253{
3254	struct platform_device *pdev;
3255	struct resource res = {
3256		.start	= address + IT87_EC_OFFSET,
3257		.end	= address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
3258		.name	= DRVNAME,
3259		.flags	= IORESOURCE_IO,
3260	};
3261	int err;
3262
3263	err = acpi_check_resource_conflict(&res);
3264	if (err)
3265		return err;
3266
3267	pdev = platform_device_alloc(DRVNAME, address);
3268	if (!pdev)
3269		return -ENOMEM;
3270
3271	err = platform_device_add_resources(pdev, &res, 1);
3272	if (err) {
3273		pr_err("Device resource addition failed (%d)\n", err);
3274		goto exit_device_put;
3275	}
3276
3277	err = platform_device_add_data(pdev, sio_data,
3278				       sizeof(struct it87_sio_data));
3279	if (err) {
3280		pr_err("Platform data allocation failed\n");
3281		goto exit_device_put;
3282	}
3283
3284	err = platform_device_add(pdev);
3285	if (err) {
3286		pr_err("Device addition failed (%d)\n", err);
3287		goto exit_device_put;
3288	}
3289
3290	it87_pdev[index] = pdev;
3291	return 0;
3292
3293exit_device_put:
3294	platform_device_put(pdev);
3295	return err;
3296}
3297
3298static int __init sm_it87_init(void)
3299{
3300	int sioaddr[2] = { REG_2E, REG_4E };
3301	struct it87_sio_data sio_data;
3302	unsigned short isa_address[2];
3303	bool found = false;
3304	int i, err;
3305
3306	err = platform_driver_register(&it87_driver);
3307	if (err)
3308		return err;
3309
3310	for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
3311		memset(&sio_data, 0, sizeof(struct it87_sio_data));
3312		isa_address[i] = 0;
3313		err = it87_find(sioaddr[i], &isa_address[i], &sio_data);
3314		if (err || isa_address[i] == 0)
3315			continue;
3316		/*
3317		 * Don't register second chip if its ISA address matches
3318		 * the first chip's ISA address.
3319		 */
3320		if (i && isa_address[i] == isa_address[0])
3321			break;
3322
3323		err = it87_device_add(i, isa_address[i], &sio_data);
3324		if (err)
3325			goto exit_dev_unregister;
3326
3327		found = true;
3328
3329		/*
3330		 * IT8705F may respond on both SIO addresses.
3331		 * Stop probing after finding one.
3332		 */
3333		if (sio_data.type == it87)
3334			break;
3335	}
3336
3337	if (!found) {
3338		err = -ENODEV;
3339		goto exit_unregister;
3340	}
3341	return 0;
3342
3343exit_dev_unregister:
3344	/* NULL check handled by platform_device_unregister */
3345	platform_device_unregister(it87_pdev[0]);
3346exit_unregister:
3347	platform_driver_unregister(&it87_driver);
3348	return err;
3349}
3350
3351static void __exit sm_it87_exit(void)
3352{
3353	/* NULL check handled by platform_device_unregister */
3354	platform_device_unregister(it87_pdev[1]);
3355	platform_device_unregister(it87_pdev[0]);
3356	platform_driver_unregister(&it87_driver);
3357}
3358
3359MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
3360MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
3361module_param(update_vbat, bool, 0);
3362MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
3363module_param(fix_pwm_polarity, bool, 0);
3364MODULE_PARM_DESC(fix_pwm_polarity,
3365		 "Force PWM polarity to active high (DANGEROUS)");
3366MODULE_LICENSE("GPL");
3367
3368module_init(sm_it87_init);
3369module_exit(sm_it87_exit);