1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   4 *	       monitoring
   5 * Copyright (C) 2004, 2005 Winbond Electronics Corp.
   6 *			    Shane Huang,
   7 *			    Rudolf Marek <r.marek@assembler.cz>
   8 *
   9 * Note:
  10 * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
  11 * 2. This driver is only for Winbond W83792D C version device, there
  12 *     are also some motherboards with B version W83792D device. The
  13 *     calculation method to in6-in7(measured value, limits) is a little
  14 *     different between C and B version. C or B version can be identified
  15 *     by CR[0x49h].
  16 */
  17
  18/*
  19 * Supports following chips:
  20 *
  21 * Chip		#vin	#fanin	#pwm	#temp	wchipid	vendid	i2c	ISA
  22 * w83792d	9	7	7	3	0x7a	0x5ca3	yes	no
  23 */
  24
  25#include <linux/module.h>
  26#include <linux/init.h>
  27#include <linux/slab.h>
  28#include <linux/i2c.h>
  29#include <linux/hwmon.h>
  30#include <linux/hwmon-sysfs.h>
  31#include <linux/err.h>
  32#include <linux/mutex.h>
  33#include <linux/sysfs.h>
  34#include <linux/jiffies.h>
  35
  36/* Addresses to scan */
  37static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  38						I2C_CLIENT_END };
  39
  40/* Insmod parameters */
  41
  42static unsigned short force_subclients[4];
  43module_param_array(force_subclients, short, NULL, 0);
  44MODULE_PARM_DESC(force_subclients,
  45		 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  46
  47static bool init;
  48module_param(init, bool, 0);
  49MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  50
  51/* The W83792D registers */
  52static const u8 W83792D_REG_IN[9] = {
  53	0x20,	/* Vcore A in DataSheet */
  54	0x21,	/* Vcore B in DataSheet */
  55	0x22,	/* VIN0 in DataSheet */
  56	0x23,	/* VIN1 in DataSheet */
  57	0x24,	/* VIN2 in DataSheet */
  58	0x25,	/* VIN3 in DataSheet */
  59	0x26,	/* 5VCC in DataSheet */
  60	0xB0,	/* 5VSB in DataSheet */
  61	0xB1	/* VBAT in DataSheet */
  62};
  63#define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  64#define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  65static const u8 W83792D_REG_IN_MAX[9] = {
  66	0x2B,	/* Vcore A High Limit in DataSheet */
  67	0x2D,	/* Vcore B High Limit in DataSheet */
  68	0x2F,	/* VIN0 High Limit in DataSheet */
  69	0x31,	/* VIN1 High Limit in DataSheet */
  70	0x33,	/* VIN2 High Limit in DataSheet */
  71	0x35,	/* VIN3 High Limit in DataSheet */
  72	0x37,	/* 5VCC High Limit in DataSheet */
  73	0xB4,	/* 5VSB High Limit in DataSheet */
  74	0xB6	/* VBAT High Limit in DataSheet */
  75};
  76static const u8 W83792D_REG_IN_MIN[9] = {
  77	0x2C,	/* Vcore A Low Limit in DataSheet */
  78	0x2E,	/* Vcore B Low Limit in DataSheet */
  79	0x30,	/* VIN0 Low Limit in DataSheet */
  80	0x32,	/* VIN1 Low Limit in DataSheet */
  81	0x34,	/* VIN2 Low Limit in DataSheet */
  82	0x36,	/* VIN3 Low Limit in DataSheet */
  83	0x38,	/* 5VCC Low Limit in DataSheet */
  84	0xB5,	/* 5VSB Low Limit in DataSheet */
  85	0xB7	/* VBAT Low Limit in DataSheet */
  86};
  87static const u8 W83792D_REG_FAN[7] = {
  88	0x28,	/* FAN 1 Count in DataSheet */
  89	0x29,	/* FAN 2 Count in DataSheet */
  90	0x2A,	/* FAN 3 Count in DataSheet */
  91	0xB8,	/* FAN 4 Count in DataSheet */
  92	0xB9,	/* FAN 5 Count in DataSheet */
  93	0xBA,	/* FAN 6 Count in DataSheet */
  94	0xBE	/* FAN 7 Count in DataSheet */
  95};
  96static const u8 W83792D_REG_FAN_MIN[7] = {
  97	0x3B,	/* FAN 1 Count Low Limit in DataSheet */
  98	0x3C,	/* FAN 2 Count Low Limit in DataSheet */
  99	0x3D,	/* FAN 3 Count Low Limit in DataSheet */
 100	0xBB,	/* FAN 4 Count Low Limit in DataSheet */
 101	0xBC,	/* FAN 5 Count Low Limit in DataSheet */
 102	0xBD,	/* FAN 6 Count Low Limit in DataSheet */
 103	0xBF	/* FAN 7 Count Low Limit in DataSheet */
 104};
 105#define W83792D_REG_FAN_CFG 0x84	/* FAN Configuration in DataSheet */
 106static const u8 W83792D_REG_FAN_DIV[4] = {
 107	0x47,	/* contains FAN2 and FAN1 Divisor */
 108	0x5B,	/* contains FAN4 and FAN3 Divisor */
 109	0x5C,	/* contains FAN6 and FAN5 Divisor */
 110	0x9E	/* contains FAN7 Divisor. */
 111};
 112static const u8 W83792D_REG_PWM[7] = {
 113	0x81,	/* FAN 1 Duty Cycle, be used to control */
 114	0x83,	/* FAN 2 Duty Cycle, be used to control */
 115	0x94,	/* FAN 3 Duty Cycle, be used to control */
 116	0xA3,	/* FAN 4 Duty Cycle, be used to control */
 117	0xA4,	/* FAN 5 Duty Cycle, be used to control */
 118	0xA5,	/* FAN 6 Duty Cycle, be used to control */
 119	0xA6	/* FAN 7 Duty Cycle, be used to control */
 120};
 121#define W83792D_REG_BANK		0x4E
 122#define W83792D_REG_TEMP2_CONFIG	0xC2
 123#define W83792D_REG_TEMP3_CONFIG	0xCA
 124
 125static const u8 W83792D_REG_TEMP1[3] = {
 126	0x27,	/* TEMP 1 in DataSheet */
 127	0x39,	/* TEMP 1 Over in DataSheet */
 128	0x3A,	/* TEMP 1 Hyst in DataSheet */
 129};
 130
 131static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 132	{ 0xC0,		/* TEMP 2 in DataSheet */
 133	  0xC1,		/* TEMP 2(0.5 deg) in DataSheet */
 134	  0xC5,		/* TEMP 2 Over High part in DataSheet */
 135	  0xC6,		/* TEMP 2 Over Low part in DataSheet */
 136	  0xC3,		/* TEMP 2 Thyst High part in DataSheet */
 137	  0xC4 },	/* TEMP 2 Thyst Low part in DataSheet */
 138	{ 0xC8,		/* TEMP 3 in DataSheet */
 139	  0xC9,		/* TEMP 3(0.5 deg) in DataSheet */
 140	  0xCD,		/* TEMP 3 Over High part in DataSheet */
 141	  0xCE,		/* TEMP 3 Over Low part in DataSheet */
 142	  0xCB,		/* TEMP 3 Thyst High part in DataSheet */
 143	  0xCC }	/* TEMP 3 Thyst Low part in DataSheet */
 144};
 145
 146static const u8 W83792D_REG_THERMAL[3] = {
 147	0x85,	/* SmartFanI: Fan1 target value */
 148	0x86,	/* SmartFanI: Fan2 target value */
 149	0x96	/* SmartFanI: Fan3 target value */
 150};
 151
 152static const u8 W83792D_REG_TOLERANCE[3] = {
 153	0x87,	/* (bit3-0)SmartFan Fan1 tolerance */
 154	0x87,	/* (bit7-4)SmartFan Fan2 tolerance */
 155	0x97	/* (bit3-0)SmartFan Fan3 tolerance */
 156};
 157
 158static const u8 W83792D_REG_POINTS[3][4] = {
 159	{ 0x85,		/* SmartFanII: Fan1 temp point 1 */
 160	  0xE3,		/* SmartFanII: Fan1 temp point 2 */
 161	  0xE4,		/* SmartFanII: Fan1 temp point 3 */
 162	  0xE5 },	/* SmartFanII: Fan1 temp point 4 */
 163	{ 0x86,		/* SmartFanII: Fan2 temp point 1 */
 164	  0xE6,		/* SmartFanII: Fan2 temp point 2 */
 165	  0xE7,		/* SmartFanII: Fan2 temp point 3 */
 166	  0xE8 },	/* SmartFanII: Fan2 temp point 4 */
 167	{ 0x96,		/* SmartFanII: Fan3 temp point 1 */
 168	  0xE9,		/* SmartFanII: Fan3 temp point 2 */
 169	  0xEA,		/* SmartFanII: Fan3 temp point 3 */
 170	  0xEB }	/* SmartFanII: Fan3 temp point 4 */
 171};
 172
 173static const u8 W83792D_REG_LEVELS[3][4] = {
 174	{ 0x88,		/* (bit3-0) SmartFanII: Fan1 Non-Stop */
 175	  0x88,		/* (bit7-4) SmartFanII: Fan1 Level 1 */
 176	  0xE0,		/* (bit7-4) SmartFanII: Fan1 Level 2 */
 177	  0xE0 },	/* (bit3-0) SmartFanII: Fan1 Level 3 */
 178	{ 0x89,		/* (bit3-0) SmartFanII: Fan2 Non-Stop */
 179	  0x89,		/* (bit7-4) SmartFanII: Fan2 Level 1 */
 180	  0xE1,		/* (bit7-4) SmartFanII: Fan2 Level 2 */
 181	  0xE1 },	/* (bit3-0) SmartFanII: Fan2 Level 3 */
 182	{ 0x98,		/* (bit3-0) SmartFanII: Fan3 Non-Stop */
 183	  0x98,		/* (bit7-4) SmartFanII: Fan3 Level 1 */
 184	  0xE2,		/* (bit7-4) SmartFanII: Fan3 Level 2 */
 185	  0xE2 }	/* (bit3-0) SmartFanII: Fan3 Level 3 */
 186};
 187
 188#define W83792D_REG_GPIO_EN		0x1A
 189#define W83792D_REG_CONFIG		0x40
 190#define W83792D_REG_VID_FANDIV		0x47
 191#define W83792D_REG_CHIPID		0x49
 192#define W83792D_REG_WCHIPID		0x58
 193#define W83792D_REG_CHIPMAN		0x4F
 194#define W83792D_REG_PIN			0x4B
 195#define W83792D_REG_I2C_SUBADDR		0x4A
 196
 197#define W83792D_REG_ALARM1 0xA9		/* realtime status register1 */
 198#define W83792D_REG_ALARM2 0xAA		/* realtime status register2 */
 199#define W83792D_REG_ALARM3 0xAB		/* realtime status register3 */
 200#define W83792D_REG_CHASSIS 0x42	/* Bit 5: Case Open status bit */
 201#define W83792D_REG_CHASSIS_CLR 0x44	/* Bit 7: Case Open CLR_CHS/Reset bit */
 202
 203/* control in0/in1 's limit modifiability */
 204#define W83792D_REG_VID_IN_B		0x17
 205
 206#define W83792D_REG_VBAT		0x5D
 207#define W83792D_REG_I2C_ADDR		0x48
 208
 209/*
 210 * Conversions. Rounding and limit checking is only done on the TO_REG
 211 * variants. Note that you should be a bit careful with which arguments
 212 * these macros are called: arguments may be evaluated more than once.
 213 * Fixing this is just not worth it.
 214 */
 215#define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 216		((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 217#define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 218		((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 219
 220static inline u8
 221FAN_TO_REG(long rpm, int div)
 222{
 223	if (rpm == 0)
 224		return 255;
 225	rpm = clamp_val(rpm, 1, 1000000);
 226	return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 227}
 228
 229#define FAN_FROM_REG(val, div)	((val) == 0   ? -1 : \
 230				((val) == 255 ? 0 : \
 231						1350000 / ((val) * (div))))
 232
 233/* for temp1 */
 234#define TEMP1_TO_REG(val)	(clamp_val(((val) < 0 ? (val) + 0x100 * 1000 \
 235						      : (val)) / 1000, 0, 0xff))
 236#define TEMP1_FROM_REG(val)	(((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 237/* for temp2 and temp3, because they need additional resolution */
 238#define TEMP_ADD_FROM_REG(val1, val2) \
 239	((((val1) & 0x80 ? (val1)-0x100 \
 240		: (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 241#define TEMP_ADD_TO_REG_HIGH(val) \
 242	(clamp_val(((val) < 0 ? (val) + 0x100 * 1000 : (val)) / 1000, 0, 0xff))
 243#define TEMP_ADD_TO_REG_LOW(val)	((val%1000) ? 0x80 : 0x00)
 244
 245#define DIV_FROM_REG(val)		(1 << (val))
 246
 247static inline u8
 248DIV_TO_REG(long val)
 249{
 250	int i;
 251	val = clamp_val(val, 1, 128) >> 1;
 252	for (i = 0; i < 7; i++) {
 253		if (val == 0)
 254			break;
 255		val >>= 1;
 256	}
 257	return (u8)i;
 258}
 259
 260struct w83792d_data {
 261	struct device *hwmon_dev;
 262
 263	struct mutex update_lock;
 264	bool valid;		/* true if following fields are valid */
 265	unsigned long last_updated;	/* In jiffies */
 266
 267	u8 in[9];		/* Register value */
 268	u8 in_max[9];		/* Register value */
 269	u8 in_min[9];		/* Register value */
 270	u16 low_bits;		/* Additional resolution to voltage in6-0 */
 271	u8 fan[7];		/* Register value */
 272	u8 fan_min[7];		/* Register value */
 273	u8 temp1[3];		/* current, over, thyst */
 274	u8 temp_add[2][6];	/* Register value */
 275	u8 fan_div[7];		/* Register encoding, shifted right */
 276	u8 pwm[7];		/* The 7 PWM outputs */
 277	u8 pwmenable[3];
 278	u32 alarms;		/* realtime status register encoding,combined */
 279	u8 chassis;		/* Chassis status */
 280	u8 thermal_cruise[3];	/* Smart FanI: Fan1,2,3 target value */
 281	u8 tolerance[3];	/* Fan1,2,3 tolerance(Smart Fan I/II) */
 282	u8 sf2_points[3][4];	/* Smart FanII: Fan1,2,3 temperature points */
 283	u8 sf2_levels[3][4];	/* Smart FanII: Fan1,2,3 duty cycle levels */
 284};
 285
 286static int w83792d_probe(struct i2c_client *client);
 287static int w83792d_detect(struct i2c_client *client,
 288			  struct i2c_board_info *info);
 289static void w83792d_remove(struct i2c_client *client);
 290static struct w83792d_data *w83792d_update_device(struct device *dev);
 291
 292#ifdef DEBUG
 293static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 294#endif
 295
 296static void w83792d_init_client(struct i2c_client *client);
 297
 298static const struct i2c_device_id w83792d_id[] = {
 299	{ "w83792d", 0 },
 300	{ }
 301};
 302MODULE_DEVICE_TABLE(i2c, w83792d_id);
 303
 304static struct i2c_driver w83792d_driver = {
 305	.class		= I2C_CLASS_HWMON,
 306	.driver = {
 307		.name = "w83792d",
 308	},
 309	.probe_new	= w83792d_probe,
 310	.remove		= w83792d_remove,
 311	.id_table	= w83792d_id,
 312	.detect		= w83792d_detect,
 313	.address_list	= normal_i2c,
 314};
 315
 316static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 317{
 318	/* in7 and in8 do not have low bits, but the formula still works */
 319	return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 320}
 321
 322/*
 323 * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 324 * but the driver only accesses registers in bank 0, so we don't have
 325 * to switch banks and lock access between switches.
 326 */
 327static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 328{
 329	return i2c_smbus_read_byte_data(client, reg);
 330}
 331
 332static inline int
 333w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 334{
 335	return i2c_smbus_write_byte_data(client, reg, value);
 336}
 337
 338/* following are the sysfs callback functions */
 339static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 340			char *buf)
 341{
 342	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 343	int nr = sensor_attr->index;
 344	struct w83792d_data *data = w83792d_update_device(dev);
 345	return sprintf(buf, "%ld\n",
 346		       IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 347}
 348
 349#define show_in_reg(reg) \
 350static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 351			char *buf) \
 352{ \
 353	struct sensor_device_attribute *sensor_attr \
 354		= to_sensor_dev_attr(attr); \
 355	int nr = sensor_attr->index; \
 356	struct w83792d_data *data = w83792d_update_device(dev); \
 357	return sprintf(buf, "%ld\n", \
 358		       (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 359}
 360
 361show_in_reg(in_min);
 362show_in_reg(in_max);
 363
 364#define store_in_reg(REG, reg) \
 365static ssize_t store_in_##reg(struct device *dev, \
 366				struct device_attribute *attr, \
 367				const char *buf, size_t count) \
 368{ \
 369	struct sensor_device_attribute *sensor_attr \
 370			= to_sensor_dev_attr(attr); \
 371	int nr = sensor_attr->index; \
 372	struct i2c_client *client = to_i2c_client(dev); \
 373	struct w83792d_data *data = i2c_get_clientdata(client); \
 374	unsigned long val; \
 375	int err = kstrtoul(buf, 10, &val); \
 376	if (err) \
 377		return err; \
 378	mutex_lock(&data->update_lock); \
 379	data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
 380	w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 381			    data->in_##reg[nr]); \
 382	mutex_unlock(&data->update_lock); \
 383	 \
 384	return count; \
 385}
 386store_in_reg(MIN, min);
 387store_in_reg(MAX, max);
 388
 389#define show_fan_reg(reg) \
 390static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 391			char *buf) \
 392{ \
 393	struct sensor_device_attribute *sensor_attr \
 394			= to_sensor_dev_attr(attr); \
 395	int nr = sensor_attr->index - 1; \
 396	struct w83792d_data *data = w83792d_update_device(dev); \
 397	return sprintf(buf, "%d\n", \
 398		FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 399}
 400
 401show_fan_reg(fan);
 402show_fan_reg(fan_min);
 403
 404static ssize_t
 405store_fan_min(struct device *dev, struct device_attribute *attr,
 406		const char *buf, size_t count)
 407{
 408	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 409	int nr = sensor_attr->index - 1;
 410	struct i2c_client *client = to_i2c_client(dev);
 411	struct w83792d_data *data = i2c_get_clientdata(client);
 412	unsigned long val;
 413	int err;
 414
 415	err = kstrtoul(buf, 10, &val);
 416	if (err)
 417		return err;
 418
 419	mutex_lock(&data->update_lock);
 420	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 421	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 422				data->fan_min[nr]);
 423	mutex_unlock(&data->update_lock);
 424
 425	return count;
 426}
 427
 428static ssize_t
 429show_fan_div(struct device *dev, struct device_attribute *attr,
 430		char *buf)
 431{
 432	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 433	int nr = sensor_attr->index;
 434	struct w83792d_data *data = w83792d_update_device(dev);
 435	return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 436}
 437
 438/*
 439 * Note: we save and restore the fan minimum here, because its value is
 440 * determined in part by the fan divisor.  This follows the principle of
 441 * least surprise; the user doesn't expect the fan minimum to change just
 442 * because the divisor changed.
 443 */
 444static ssize_t
 445store_fan_div(struct device *dev, struct device_attribute *attr,
 446		const char *buf, size_t count)
 447{
 448	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 449	int nr = sensor_attr->index - 1;
 450	struct i2c_client *client = to_i2c_client(dev);
 451	struct w83792d_data *data = i2c_get_clientdata(client);
 452	unsigned long min;
 453	/*u8 reg;*/
 454	u8 fan_div_reg = 0;
 455	u8 tmp_fan_div;
 456	unsigned long val;
 457	int err;
 458
 459	err = kstrtoul(buf, 10, &val);
 460	if (err)
 461		return err;
 462
 463	/* Save fan_min */
 464	mutex_lock(&data->update_lock);
 465	min = FAN_FROM_REG(data->fan_min[nr],
 466			   DIV_FROM_REG(data->fan_div[nr]));
 467
 468	data->fan_div[nr] = DIV_TO_REG(val);
 469
 470	fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 471	fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 472	tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 473					: ((data->fan_div[nr]) & 0x07);
 474	w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 475					fan_div_reg | tmp_fan_div);
 476
 477	/* Restore fan_min */
 478	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 479	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 480	mutex_unlock(&data->update_lock);
 481
 482	return count;
 483}
 484
 485/* read/write the temperature1, includes measured value and limits */
 486
 487static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 488				char *buf)
 489{
 490	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 491	int nr = sensor_attr->index;
 492	struct w83792d_data *data = w83792d_update_device(dev);
 493	return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 494}
 495
 496static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 497				const char *buf, size_t count)
 498{
 499	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 500	int nr = sensor_attr->index;
 501	struct i2c_client *client = to_i2c_client(dev);
 502	struct w83792d_data *data = i2c_get_clientdata(client);
 503	long val;
 504	int err;
 505
 506	err = kstrtol(buf, 10, &val);
 507	if (err)
 508		return err;
 509
 510	mutex_lock(&data->update_lock);
 511	data->temp1[nr] = TEMP1_TO_REG(val);
 512	w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 513		data->temp1[nr]);
 514	mutex_unlock(&data->update_lock);
 515
 516	return count;
 517}
 518
 519/* read/write the temperature2-3, includes measured value and limits */
 520
 521static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 522				char *buf)
 523{
 524	struct sensor_device_attribute_2 *sensor_attr
 525	  = to_sensor_dev_attr_2(attr);
 526	int nr = sensor_attr->nr;
 527	int index = sensor_attr->index;
 528	struct w83792d_data *data = w83792d_update_device(dev);
 529	return sprintf(buf, "%ld\n",
 530		(long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 531			data->temp_add[nr][index+1]));
 532}
 533
 534static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 535				const char *buf, size_t count)
 536{
 537	struct sensor_device_attribute_2 *sensor_attr
 538	  = to_sensor_dev_attr_2(attr);
 539	int nr = sensor_attr->nr;
 540	int index = sensor_attr->index;
 541	struct i2c_client *client = to_i2c_client(dev);
 542	struct w83792d_data *data = i2c_get_clientdata(client);
 543	long val;
 544	int err;
 545
 546	err = kstrtol(buf, 10, &val);
 547	if (err)
 548		return err;
 549
 550	mutex_lock(&data->update_lock);
 551	data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 552	data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 553	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 554		data->temp_add[nr][index]);
 555	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 556		data->temp_add[nr][index+1]);
 557	mutex_unlock(&data->update_lock);
 558
 559	return count;
 560}
 561
 562/* get realtime status of all sensors items: voltage, temp, fan */
 563static ssize_t
 564alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
 565{
 566	struct w83792d_data *data = w83792d_update_device(dev);
 567	return sprintf(buf, "%d\n", data->alarms);
 568}
 569
 570static ssize_t show_alarm(struct device *dev,
 571			  struct device_attribute *attr, char *buf)
 572{
 573	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 574	int nr = sensor_attr->index;
 575	struct w83792d_data *data = w83792d_update_device(dev);
 576	return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 577}
 578
 579static ssize_t
 580show_pwm(struct device *dev, struct device_attribute *attr,
 581		char *buf)
 582{
 583	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 584	int nr = sensor_attr->index;
 585	struct w83792d_data *data = w83792d_update_device(dev);
 586	return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 587}
 588
 589static ssize_t
 590show_pwmenable(struct device *dev, struct device_attribute *attr,
 591			char *buf)
 592{
 593	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 594	int nr = sensor_attr->index - 1;
 595	struct w83792d_data *data = w83792d_update_device(dev);
 596	long pwm_enable_tmp = 1;
 597
 598	switch (data->pwmenable[nr]) {
 599	case 0:
 600		pwm_enable_tmp = 1; /* manual mode */
 601		break;
 602	case 1:
 603		pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 604		break;
 605	case 2:
 606		pwm_enable_tmp = 2; /* Smart Fan II */
 607		break;
 608	}
 609
 610	return sprintf(buf, "%ld\n", pwm_enable_tmp);
 611}
 612
 613static ssize_t
 614store_pwm(struct device *dev, struct device_attribute *attr,
 615		const char *buf, size_t count)
 616{
 617	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 618	int nr = sensor_attr->index;
 619	struct i2c_client *client = to_i2c_client(dev);
 620	struct w83792d_data *data = i2c_get_clientdata(client);
 621	unsigned long val;
 622	int err;
 623
 624	err = kstrtoul(buf, 10, &val);
 625	if (err)
 626		return err;
 627	val = clamp_val(val, 0, 255) >> 4;
 628
 629	mutex_lock(&data->update_lock);
 630	val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 631	data->pwm[nr] = val;
 632	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 633	mutex_unlock(&data->update_lock);
 634
 635	return count;
 636}
 637
 638static ssize_t
 639store_pwmenable(struct device *dev, struct device_attribute *attr,
 640			const char *buf, size_t count)
 641{
 642	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 643	int nr = sensor_attr->index - 1;
 644	struct i2c_client *client = to_i2c_client(dev);
 645	struct w83792d_data *data = i2c_get_clientdata(client);
 646	u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 647	unsigned long val;
 648	int err;
 649
 650	err = kstrtoul(buf, 10, &val);
 651	if (err)
 652		return err;
 653
 654	if (val < 1 || val > 3)
 655		return -EINVAL;
 656
 657	mutex_lock(&data->update_lock);
 658	switch (val) {
 659	case 1:
 660		data->pwmenable[nr] = 0; /* manual mode */
 661		break;
 662	case 2:
 663		data->pwmenable[nr] = 2; /* Smart Fan II */
 664		break;
 665	case 3:
 666		data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 667		break;
 668	}
 669	cfg1_tmp = data->pwmenable[0];
 670	cfg2_tmp = (data->pwmenable[1]) << 2;
 671	cfg3_tmp = (data->pwmenable[2]) << 4;
 672	cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 673	fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 674	w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 675	mutex_unlock(&data->update_lock);
 676
 677	return count;
 678}
 679
 680static ssize_t
 681show_pwm_mode(struct device *dev, struct device_attribute *attr,
 682			char *buf)
 683{
 684	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 685	int nr = sensor_attr->index;
 686	struct w83792d_data *data = w83792d_update_device(dev);
 687	return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 688}
 689
 690static ssize_t
 691store_pwm_mode(struct device *dev, struct device_attribute *attr,
 692			const char *buf, size_t count)
 693{
 694	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 695	int nr = sensor_attr->index;
 696	struct i2c_client *client = to_i2c_client(dev);
 697	struct w83792d_data *data = i2c_get_clientdata(client);
 698	unsigned long val;
 699	int err;
 700
 701	err = kstrtoul(buf, 10, &val);
 702	if (err)
 703		return err;
 704	if (val > 1)
 705		return -EINVAL;
 706
 707	mutex_lock(&data->update_lock);
 708	data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 709	if (val) {			/* PWM mode */
 710		data->pwm[nr] |= 0x80;
 711	} else {			/* DC mode */
 712		data->pwm[nr] &= 0x7f;
 713	}
 714	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 715	mutex_unlock(&data->update_lock);
 716
 717	return count;
 718}
 719
 720static ssize_t
 721intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
 722		      char *buf)
 723{
 724	struct w83792d_data *data = w83792d_update_device(dev);
 725	return sprintf(buf, "%d\n", data->chassis);
 726}
 727
 728static ssize_t
 729intrusion0_alarm_store(struct device *dev, struct device_attribute *attr,
 730		       const char *buf, size_t count)
 731{
 732	struct i2c_client *client = to_i2c_client(dev);
 733	struct w83792d_data *data = i2c_get_clientdata(client);
 734	unsigned long val;
 735	u8 reg;
 736
 737	if (kstrtoul(buf, 10, &val) || val != 0)
 738		return -EINVAL;
 739
 740	mutex_lock(&data->update_lock);
 741	reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 742	w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 743	data->valid = false;		/* Force cache refresh */
 744	mutex_unlock(&data->update_lock);
 745
 746	return count;
 747}
 748
 749/* For Smart Fan I / Thermal Cruise */
 750static ssize_t
 751show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 752			char *buf)
 753{
 754	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 755	int nr = sensor_attr->index;
 756	struct w83792d_data *data = w83792d_update_device(dev);
 757	return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 758}
 759
 760static ssize_t
 761store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 762			const char *buf, size_t count)
 763{
 764	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 765	int nr = sensor_attr->index - 1;
 766	struct i2c_client *client = to_i2c_client(dev);
 767	struct w83792d_data *data = i2c_get_clientdata(client);
 768	u8 target_tmp = 0, target_mask = 0;
 769	unsigned long val;
 770	int err;
 771
 772	err = kstrtoul(buf, 10, &val);
 773	if (err)
 774		return err;
 775
 776	target_tmp = val;
 777	target_tmp = target_tmp & 0x7f;
 778	mutex_lock(&data->update_lock);
 779	target_mask = w83792d_read_value(client,
 780					 W83792D_REG_THERMAL[nr]) & 0x80;
 781	data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
 782	w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 783		(data->thermal_cruise[nr]) | target_mask);
 784	mutex_unlock(&data->update_lock);
 785
 786	return count;
 787}
 788
 789/* For Smart Fan I/Thermal Cruise and Smart Fan II */
 790static ssize_t
 791show_tolerance(struct device *dev, struct device_attribute *attr,
 792		char *buf)
 793{
 794	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 795	int nr = sensor_attr->index;
 796	struct w83792d_data *data = w83792d_update_device(dev);
 797	return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 798}
 799
 800static ssize_t
 801store_tolerance(struct device *dev, struct device_attribute *attr,
 802		const char *buf, size_t count)
 803{
 804	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 805	int nr = sensor_attr->index - 1;
 806	struct i2c_client *client = to_i2c_client(dev);
 807	struct w83792d_data *data = i2c_get_clientdata(client);
 808	u8 tol_tmp, tol_mask;
 809	unsigned long val;
 810	int err;
 811
 812	err = kstrtoul(buf, 10, &val);
 813	if (err)
 814		return err;
 815
 816	mutex_lock(&data->update_lock);
 817	tol_mask = w83792d_read_value(client,
 818		W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 819	tol_tmp = clamp_val(val, 0, 15);
 820	tol_tmp &= 0x0f;
 821	data->tolerance[nr] = tol_tmp;
 822	if (nr == 1)
 823		tol_tmp <<= 4;
 824	w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 825		tol_mask | tol_tmp);
 826	mutex_unlock(&data->update_lock);
 827
 828	return count;
 829}
 830
 831/* For Smart Fan II */
 832static ssize_t
 833show_sf2_point(struct device *dev, struct device_attribute *attr,
 834		char *buf)
 835{
 836	struct sensor_device_attribute_2 *sensor_attr
 837	  = to_sensor_dev_attr_2(attr);
 838	int nr = sensor_attr->nr;
 839	int index = sensor_attr->index;
 840	struct w83792d_data *data = w83792d_update_device(dev);
 841	return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 842}
 843
 844static ssize_t
 845store_sf2_point(struct device *dev, struct device_attribute *attr,
 846		const char *buf, size_t count)
 847{
 848	struct sensor_device_attribute_2 *sensor_attr
 849	  = to_sensor_dev_attr_2(attr);
 850	int nr = sensor_attr->nr - 1;
 851	int index = sensor_attr->index - 1;
 852	struct i2c_client *client = to_i2c_client(dev);
 853	struct w83792d_data *data = i2c_get_clientdata(client);
 854	u8 mask_tmp = 0;
 855	unsigned long val;
 856	int err;
 857
 858	err = kstrtoul(buf, 10, &val);
 859	if (err)
 860		return err;
 861
 862	mutex_lock(&data->update_lock);
 863	data->sf2_points[index][nr] = clamp_val(val, 0, 127);
 864	mask_tmp = w83792d_read_value(client,
 865					W83792D_REG_POINTS[index][nr]) & 0x80;
 866	w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 867		mask_tmp|data->sf2_points[index][nr]);
 868	mutex_unlock(&data->update_lock);
 869
 870	return count;
 871}
 872
 873static ssize_t
 874show_sf2_level(struct device *dev, struct device_attribute *attr,
 875		char *buf)
 876{
 877	struct sensor_device_attribute_2 *sensor_attr
 878	  = to_sensor_dev_attr_2(attr);
 879	int nr = sensor_attr->nr;
 880	int index = sensor_attr->index;
 881	struct w83792d_data *data = w83792d_update_device(dev);
 882	return sprintf(buf, "%d\n",
 883			(((data->sf2_levels[index-1][nr]) * 100) / 15));
 884}
 885
 886static ssize_t
 887store_sf2_level(struct device *dev, struct device_attribute *attr,
 888		const char *buf, size_t count)
 889{
 890	struct sensor_device_attribute_2 *sensor_attr
 891	  = to_sensor_dev_attr_2(attr);
 892	int nr = sensor_attr->nr;
 893	int index = sensor_attr->index - 1;
 894	struct i2c_client *client = to_i2c_client(dev);
 895	struct w83792d_data *data = i2c_get_clientdata(client);
 896	u8 mask_tmp = 0, level_tmp = 0;
 897	unsigned long val;
 898	int err;
 899
 900	err = kstrtoul(buf, 10, &val);
 901	if (err)
 902		return err;
 903
 904	mutex_lock(&data->update_lock);
 905	data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
 906	mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 907		& ((nr == 3) ? 0xf0 : 0x0f);
 908	if (nr == 3)
 909		level_tmp = data->sf2_levels[index][nr];
 910	else
 911		level_tmp = data->sf2_levels[index][nr] << 4;
 912	w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 913			    level_tmp | mask_tmp);
 914	mutex_unlock(&data->update_lock);
 915
 916	return count;
 917}
 918
 919
 920static int
 921w83792d_detect_subclients(struct i2c_client *new_client)
 922{
 923	int i, id;
 924	int address = new_client->addr;
 925	u8 val;
 926	struct i2c_adapter *adapter = new_client->adapter;
 927
 928	id = i2c_adapter_id(adapter);
 929	if (force_subclients[0] == id && force_subclients[1] == address) {
 930		for (i = 2; i <= 3; i++) {
 931			if (force_subclients[i] < 0x48 ||
 932			    force_subclients[i] > 0x4f) {
 933				dev_err(&new_client->dev,
 934					"invalid subclient address %d; must be 0x48-0x4f\n",
 935					force_subclients[i]);
 936				return -ENODEV;
 937			}
 938		}
 939		w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 940					(force_subclients[2] & 0x07) |
 941					((force_subclients[3] & 0x07) << 4));
 942	}
 943
 944	val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 945
 946	if (!(val & 0x88) && (val & 0x7) == ((val >> 4) & 0x7)) {
 947		dev_err(&new_client->dev,
 948			"duplicate addresses 0x%x, use force_subclient\n", 0x48 + (val & 0x7));
 949		return -ENODEV;
 950	}
 951
 952	if (!(val & 0x08))
 953		devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + (val & 0x7));
 954
 955	if (!(val & 0x80))
 956		devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + ((val >> 4) & 0x7));
 957
 958	return 0;
 959}
 960
 961static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 962static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 963static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 964static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 965static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 966static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 967static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 968static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 969static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 970static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 971			show_in_min, store_in_min, 0);
 972static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 973			show_in_min, store_in_min, 1);
 974static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 975			show_in_min, store_in_min, 2);
 976static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 977			show_in_min, store_in_min, 3);
 978static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 979			show_in_min, store_in_min, 4);
 980static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 981			show_in_min, store_in_min, 5);
 982static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 983			show_in_min, store_in_min, 6);
 984static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 985			show_in_min, store_in_min, 7);
 986static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 987			show_in_min, store_in_min, 8);
 988static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 989			show_in_max, store_in_max, 0);
 990static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 991			show_in_max, store_in_max, 1);
 992static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 993			show_in_max, store_in_max, 2);
 994static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
 995			show_in_max, store_in_max, 3);
 996static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
 997			show_in_max, store_in_max, 4);
 998static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
 999			show_in_max, store_in_max, 5);
1000static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1001			show_in_max, store_in_max, 6);
1002static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1003			show_in_max, store_in_max, 7);
1004static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1005			show_in_max, store_in_max, 8);
1006static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1007static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1008static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1009static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1010			show_temp1, store_temp1, 0, 1);
1011static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1012			store_temp23, 0, 2);
1013static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1014			store_temp23, 1, 2);
1015static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1016			show_temp1, store_temp1, 0, 2);
1017static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1018			show_temp23, store_temp23, 0, 4);
1019static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1020			show_temp23, store_temp23, 1, 4);
1021static DEVICE_ATTR_RO(alarms);
1022static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1023static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1024static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1025static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1026static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1027static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1028static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1029static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1030static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1031static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1032static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1033static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1034static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1035static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1036static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1037static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1038static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1039static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1040static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1041static DEVICE_ATTR_RW(intrusion0_alarm);
1042static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1043static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1044static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1045static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1046static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1047static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1048static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
1049static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1050			show_pwmenable, store_pwmenable, 1);
1051static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1052			show_pwmenable, store_pwmenable, 2);
1053static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1054			show_pwmenable, store_pwmenable, 3);
1055static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1056			show_pwm_mode, store_pwm_mode, 0);
1057static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1058			show_pwm_mode, store_pwm_mode, 1);
1059static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1060			show_pwm_mode, store_pwm_mode, 2);
1061static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
1062			show_pwm_mode, store_pwm_mode, 3);
1063static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1064			show_pwm_mode, store_pwm_mode, 4);
1065static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1066			show_pwm_mode, store_pwm_mode, 5);
1067static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1068			show_pwm_mode, store_pwm_mode, 6);
1069static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1070			show_tolerance, store_tolerance, 1);
1071static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1072			show_tolerance, store_tolerance, 2);
1073static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1074			show_tolerance, store_tolerance, 3);
1075static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1076			show_thermal_cruise, store_thermal_cruise, 1);
1077static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1078			show_thermal_cruise, store_thermal_cruise, 2);
1079static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1080			show_thermal_cruise, store_thermal_cruise, 3);
1081static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1082			show_sf2_point, store_sf2_point, 1, 1);
1083static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1084			show_sf2_point, store_sf2_point, 2, 1);
1085static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1086			show_sf2_point, store_sf2_point, 3, 1);
1087static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1088			show_sf2_point, store_sf2_point, 4, 1);
1089static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1090			show_sf2_point, store_sf2_point, 1, 2);
1091static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1092			show_sf2_point, store_sf2_point, 2, 2);
1093static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1094			show_sf2_point, store_sf2_point, 3, 2);
1095static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1096			show_sf2_point, store_sf2_point, 4, 2);
1097static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1098			show_sf2_point, store_sf2_point, 1, 3);
1099static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1100			show_sf2_point, store_sf2_point, 2, 3);
1101static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1102			show_sf2_point, store_sf2_point, 3, 3);
1103static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1104			show_sf2_point, store_sf2_point, 4, 3);
1105static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1106			show_sf2_level, store_sf2_level, 1, 1);
1107static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1108			show_sf2_level, store_sf2_level, 2, 1);
1109static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1110			show_sf2_level, store_sf2_level, 3, 1);
1111static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1112			show_sf2_level, store_sf2_level, 1, 2);
1113static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1114			show_sf2_level, store_sf2_level, 2, 2);
1115static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1116			show_sf2_level, store_sf2_level, 3, 2);
1117static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1118			show_sf2_level, store_sf2_level, 1, 3);
1119static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1120			show_sf2_level, store_sf2_level, 2, 3);
1121static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1122			show_sf2_level, store_sf2_level, 3, 3);
1123static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1124static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1125static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1126static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1127static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1128static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1129static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1130static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1131			show_fan_min, store_fan_min, 1);
1132static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1133			show_fan_min, store_fan_min, 2);
1134static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1135			show_fan_min, store_fan_min, 3);
1136static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1137			show_fan_min, store_fan_min, 4);
1138static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1139			show_fan_min, store_fan_min, 5);
1140static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1141			show_fan_min, store_fan_min, 6);
1142static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1143			show_fan_min, store_fan_min, 7);
1144static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1145			show_fan_div, store_fan_div, 1);
1146static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1147			show_fan_div, store_fan_div, 2);
1148static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1149			show_fan_div, store_fan_div, 3);
1150static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1151			show_fan_div, store_fan_div, 4);
1152static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1153			show_fan_div, store_fan_div, 5);
1154static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1155			show_fan_div, store_fan_div, 6);
1156static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1157			show_fan_div, store_fan_div, 7);
1158
1159static struct attribute *w83792d_attributes_fan[4][7] = {
1160	{
1161		&sensor_dev_attr_fan4_input.dev_attr.attr,
1162		&sensor_dev_attr_fan4_min.dev_attr.attr,
1163		&sensor_dev_attr_fan4_div.dev_attr.attr,
1164		&sensor_dev_attr_fan4_alarm.dev_attr.attr,
1165		&sensor_dev_attr_pwm4.dev_attr.attr,
1166		&sensor_dev_attr_pwm4_mode.dev_attr.attr,
1167		NULL
1168	}, {
1169		&sensor_dev_attr_fan5_input.dev_attr.attr,
1170		&sensor_dev_attr_fan5_min.dev_attr.attr,
1171		&sensor_dev_attr_fan5_div.dev_attr.attr,
1172		&sensor_dev_attr_fan5_alarm.dev_attr.attr,
1173		&sensor_dev_attr_pwm5.dev_attr.attr,
1174		&sensor_dev_attr_pwm5_mode.dev_attr.attr,
1175		NULL
1176	}, {
1177		&sensor_dev_attr_fan6_input.dev_attr.attr,
1178		&sensor_dev_attr_fan6_min.dev_attr.attr,
1179		&sensor_dev_attr_fan6_div.dev_attr.attr,
1180		&sensor_dev_attr_fan6_alarm.dev_attr.attr,
1181		&sensor_dev_attr_pwm6.dev_attr.attr,
1182		&sensor_dev_attr_pwm6_mode.dev_attr.attr,
1183		NULL
1184	}, {
1185		&sensor_dev_attr_fan7_input.dev_attr.attr,
1186		&sensor_dev_attr_fan7_min.dev_attr.attr,
1187		&sensor_dev_attr_fan7_div.dev_attr.attr,
1188		&sensor_dev_attr_fan7_alarm.dev_attr.attr,
1189		&sensor_dev_attr_pwm7.dev_attr.attr,
1190		&sensor_dev_attr_pwm7_mode.dev_attr.attr,
1191		NULL
1192	}
1193};
1194
1195static const struct attribute_group w83792d_group_fan[4] = {
1196	{ .attrs = w83792d_attributes_fan[0] },
1197	{ .attrs = w83792d_attributes_fan[1] },
1198	{ .attrs = w83792d_attributes_fan[2] },
1199	{ .attrs = w83792d_attributes_fan[3] },
1200};
1201
1202static struct attribute *w83792d_attributes[] = {
1203	&sensor_dev_attr_in0_input.dev_attr.attr,
1204	&sensor_dev_attr_in0_max.dev_attr.attr,
1205	&sensor_dev_attr_in0_min.dev_attr.attr,
1206	&sensor_dev_attr_in1_input.dev_attr.attr,
1207	&sensor_dev_attr_in1_max.dev_attr.attr,
1208	&sensor_dev_attr_in1_min.dev_attr.attr,
1209	&sensor_dev_attr_in2_input.dev_attr.attr,
1210	&sensor_dev_attr_in2_max.dev_attr.attr,
1211	&sensor_dev_attr_in2_min.dev_attr.attr,
1212	&sensor_dev_attr_in3_input.dev_attr.attr,
1213	&sensor_dev_attr_in3_max.dev_attr.attr,
1214	&sensor_dev_attr_in3_min.dev_attr.attr,
1215	&sensor_dev_attr_in4_input.dev_attr.attr,
1216	&sensor_dev_attr_in4_max.dev_attr.attr,
1217	&sensor_dev_attr_in4_min.dev_attr.attr,
1218	&sensor_dev_attr_in5_input.dev_attr.attr,
1219	&sensor_dev_attr_in5_max.dev_attr.attr,
1220	&sensor_dev_attr_in5_min.dev_attr.attr,
1221	&sensor_dev_attr_in6_input.dev_attr.attr,
1222	&sensor_dev_attr_in6_max.dev_attr.attr,
1223	&sensor_dev_attr_in6_min.dev_attr.attr,
1224	&sensor_dev_attr_in7_input.dev_attr.attr,
1225	&sensor_dev_attr_in7_max.dev_attr.attr,
1226	&sensor_dev_attr_in7_min.dev_attr.attr,
1227	&sensor_dev_attr_in8_input.dev_attr.attr,
1228	&sensor_dev_attr_in8_max.dev_attr.attr,
1229	&sensor_dev_attr_in8_min.dev_attr.attr,
1230	&sensor_dev_attr_in0_alarm.dev_attr.attr,
1231	&sensor_dev_attr_in1_alarm.dev_attr.attr,
1232	&sensor_dev_attr_in2_alarm.dev_attr.attr,
1233	&sensor_dev_attr_in3_alarm.dev_attr.attr,
1234	&sensor_dev_attr_in4_alarm.dev_attr.attr,
1235	&sensor_dev_attr_in5_alarm.dev_attr.attr,
1236	&sensor_dev_attr_in6_alarm.dev_attr.attr,
1237	&sensor_dev_attr_in7_alarm.dev_attr.attr,
1238	&sensor_dev_attr_in8_alarm.dev_attr.attr,
1239	&sensor_dev_attr_temp1_input.dev_attr.attr,
1240	&sensor_dev_attr_temp1_max.dev_attr.attr,
1241	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1242	&sensor_dev_attr_temp2_input.dev_attr.attr,
1243	&sensor_dev_attr_temp2_max.dev_attr.attr,
1244	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1245	&sensor_dev_attr_temp3_input.dev_attr.attr,
1246	&sensor_dev_attr_temp3_max.dev_attr.attr,
1247	&sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1248	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
1249	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
1250	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
1251	&sensor_dev_attr_pwm1.dev_attr.attr,
1252	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
1253	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
1254	&sensor_dev_attr_pwm2.dev_attr.attr,
1255	&sensor_dev_attr_pwm2_mode.dev_attr.attr,
1256	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
1257	&sensor_dev_attr_pwm3.dev_attr.attr,
1258	&sensor_dev_attr_pwm3_mode.dev_attr.attr,
1259	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
1260	&dev_attr_alarms.attr,
1261	&dev_attr_intrusion0_alarm.attr,
1262	&sensor_dev_attr_tolerance1.dev_attr.attr,
1263	&sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1264	&sensor_dev_attr_tolerance2.dev_attr.attr,
1265	&sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1266	&sensor_dev_attr_tolerance3.dev_attr.attr,
1267	&sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1268	&sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1269	&sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1270	&sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1271	&sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1272	&sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1273	&sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1274	&sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1275	&sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1276	&sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1277	&sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1278	&sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1279	&sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1280	&sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1281	&sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1282	&sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1283	&sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1284	&sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1285	&sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1286	&sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1287	&sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1288	&sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1289	&sensor_dev_attr_fan1_input.dev_attr.attr,
1290	&sensor_dev_attr_fan1_min.dev_attr.attr,
1291	&sensor_dev_attr_fan1_div.dev_attr.attr,
1292	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
1293	&sensor_dev_attr_fan2_input.dev_attr.attr,
1294	&sensor_dev_attr_fan2_min.dev_attr.attr,
1295	&sensor_dev_attr_fan2_div.dev_attr.attr,
1296	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
1297	&sensor_dev_attr_fan3_input.dev_attr.attr,
1298	&sensor_dev_attr_fan3_min.dev_attr.attr,
1299	&sensor_dev_attr_fan3_div.dev_attr.attr,
1300	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
1301	NULL
1302};
1303
1304static const struct attribute_group w83792d_group = {
1305	.attrs = w83792d_attributes,
1306};
1307
1308/* Return 0 if detection is successful, -ENODEV otherwise */
1309static int
1310w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1311{
1312	struct i2c_adapter *adapter = client->adapter;
1313	int val1, val2;
1314	unsigned short address = client->addr;
1315
1316	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1317		return -ENODEV;
1318
1319	if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1320		return -ENODEV;
1321
1322	val1 = w83792d_read_value(client, W83792D_REG_BANK);
1323	val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1324	/* Check for Winbond ID if in bank 0 */
1325	if (!(val1 & 0x07)) {  /* is Bank0 */
1326		if ((!(val1 & 0x80) && val2 != 0xa3) ||
1327		    ((val1 & 0x80) && val2 != 0x5c))
1328			return -ENODEV;
1329	}
1330	/*
1331	 * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1332	 * should match
1333	 */
1334	if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1335		return -ENODEV;
1336
1337	/*  Put it now into bank 0 and Vendor ID High Byte */
1338	w83792d_write_value(client,
1339			    W83792D_REG_BANK,
1340			    (w83792d_read_value(client,
1341				W83792D_REG_BANK) & 0x78) | 0x80);
1342
1343	/* Determine the chip type. */
1344	val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1345	val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1346	if (val1 != 0x7a || val2 != 0x5c)
1347		return -ENODEV;
1348
1349	strscpy(info->type, "w83792d", I2C_NAME_SIZE);
1350
1351	return 0;
1352}
1353
1354static int
1355w83792d_probe(struct i2c_client *client)
1356{
1357	struct w83792d_data *data;
1358	struct device *dev = &client->dev;
1359	int i, val1, err;
1360
1361	data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1362	if (!data)
1363		return -ENOMEM;
1364
1365	i2c_set_clientdata(client, data);
1366	mutex_init(&data->update_lock);
1367
1368	err = w83792d_detect_subclients(client);
1369	if (err)
1370		return err;
1371
1372	/* Initialize the chip */
1373	w83792d_init_client(client);
1374
1375	/* A few vars need to be filled upon startup */
1376	for (i = 0; i < 7; i++) {
1377		data->fan_min[i] = w83792d_read_value(client,
1378					W83792D_REG_FAN_MIN[i]);
1379	}
1380
1381	/* Register sysfs hooks */
1382	err = sysfs_create_group(&dev->kobj, &w83792d_group);
1383	if (err)
1384		return err;
1385
1386	/*
1387	 * Read GPIO enable register to check if pins for fan 4,5 are used as
1388	 * GPIO
1389	 */
1390	val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1391
1392	if (!(val1 & 0x40)) {
1393		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1394		if (err)
1395			goto exit_remove_files;
1396	}
1397
1398	if (!(val1 & 0x20)) {
1399		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1400		if (err)
1401			goto exit_remove_files;
1402	}
1403
1404	val1 = w83792d_read_value(client, W83792D_REG_PIN);
1405	if (val1 & 0x40) {
1406		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1407		if (err)
1408			goto exit_remove_files;
1409	}
1410
1411	if (val1 & 0x04) {
1412		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1413		if (err)
1414			goto exit_remove_files;
1415	}
1416
1417	data->hwmon_dev = hwmon_device_register(dev);
1418	if (IS_ERR(data->hwmon_dev)) {
1419		err = PTR_ERR(data->hwmon_dev);
1420		goto exit_remove_files;
1421	}
1422
1423	return 0;
1424
1425exit_remove_files:
1426	sysfs_remove_group(&dev->kobj, &w83792d_group);
1427	for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1428		sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1429	return err;
1430}
1431
1432static void
1433w83792d_remove(struct i2c_client *client)
1434{
1435	struct w83792d_data *data = i2c_get_clientdata(client);
1436	int i;
1437
1438	hwmon_device_unregister(data->hwmon_dev);
1439	sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1440	for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1441		sysfs_remove_group(&client->dev.kobj,
1442				   &w83792d_group_fan[i]);
1443}
1444
1445static void
1446w83792d_init_client(struct i2c_client *client)
1447{
1448	u8 temp2_cfg, temp3_cfg, vid_in_b;
1449
1450	if (init)
1451		w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1452
1453	/*
1454	 * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1455	 * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1456	 * vin0/vin1 can be modified by user;
1457	 * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1458	 * vin0/vin1 auto-updated, can NOT be modified by user.
1459	 */
1460	vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1461	w83792d_write_value(client, W83792D_REG_VID_IN_B,
1462			    vid_in_b & 0xbf);
1463
1464	temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1465	temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1466	w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1467				temp2_cfg & 0xe6);
1468	w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1469				temp3_cfg & 0xe6);
1470
1471	/* Start monitoring */
1472	w83792d_write_value(client, W83792D_REG_CONFIG,
1473			    (w83792d_read_value(client,
1474						W83792D_REG_CONFIG) & 0xf7)
1475			    | 0x01);
1476}
1477
1478static struct w83792d_data *w83792d_update_device(struct device *dev)
1479{
1480	struct i2c_client *client = to_i2c_client(dev);
1481	struct w83792d_data *data = i2c_get_clientdata(client);
1482	int i, j;
1483	u8 reg_array_tmp[4], reg_tmp;
1484
1485	mutex_lock(&data->update_lock);
1486
1487	if (time_after
1488	    (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1489	    || time_before(jiffies, data->last_updated) || !data->valid) {
1490		dev_dbg(dev, "Starting device update\n");
1491
1492		/* Update the voltages measured value and limits */
1493		for (i = 0; i < 9; i++) {
1494			data->in[i] = w83792d_read_value(client,
1495						W83792D_REG_IN[i]);
1496			data->in_max[i] = w83792d_read_value(client,
1497						W83792D_REG_IN_MAX[i]);
1498			data->in_min[i] = w83792d_read_value(client,
1499						W83792D_REG_IN_MIN[i]);
1500		}
1501		data->low_bits = w83792d_read_value(client,
1502						W83792D_REG_LOW_BITS1) +
1503				 (w83792d_read_value(client,
1504						W83792D_REG_LOW_BITS2) << 8);
1505		for (i = 0; i < 7; i++) {
1506			/* Update the Fan measured value and limits */
1507			data->fan[i] = w83792d_read_value(client,
1508						W83792D_REG_FAN[i]);
1509			data->fan_min[i] = w83792d_read_value(client,
1510						W83792D_REG_FAN_MIN[i]);
1511			/* Update the PWM/DC Value and PWM/DC flag */
1512			data->pwm[i] = w83792d_read_value(client,
1513						W83792D_REG_PWM[i]);
1514		}
1515
1516		reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1517		data->pwmenable[0] = reg_tmp & 0x03;
1518		data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1519		data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1520
1521		for (i = 0; i < 3; i++) {
1522			data->temp1[i] = w83792d_read_value(client,
1523							W83792D_REG_TEMP1[i]);
1524		}
1525		for (i = 0; i < 2; i++) {
1526			for (j = 0; j < 6; j++) {
1527				data->temp_add[i][j] = w83792d_read_value(
1528					client, W83792D_REG_TEMP_ADD[i][j]);
1529			}
1530		}
1531
1532		/* Update the Fan Divisor */
1533		for (i = 0; i < 4; i++) {
1534			reg_array_tmp[i] = w83792d_read_value(client,
1535							W83792D_REG_FAN_DIV[i]);
1536		}
1537		data->fan_div[0] = reg_array_tmp[0] & 0x07;
1538		data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1539		data->fan_div[2] = reg_array_tmp[1] & 0x07;
1540		data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1541		data->fan_div[4] = reg_array_tmp[2] & 0x07;
1542		data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1543		data->fan_div[6] = reg_array_tmp[3] & 0x07;
1544
1545		/* Update the realtime status */
1546		data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1547			(w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1548			(w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1549
1550		/* Update CaseOpen status and it's CLR_CHS. */
1551		data->chassis = (w83792d_read_value(client,
1552			W83792D_REG_CHASSIS) >> 5) & 0x01;
1553
1554		/* Update Thermal Cruise/Smart Fan I target value */
1555		for (i = 0; i < 3; i++) {
1556			data->thermal_cruise[i] =
1557				w83792d_read_value(client,
1558				W83792D_REG_THERMAL[i]) & 0x7f;
1559		}
1560
1561		/* Update Smart Fan I/II tolerance */
1562		reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1563		data->tolerance[0] = reg_tmp & 0x0f;
1564		data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1565		data->tolerance[2] = w83792d_read_value(client,
1566					W83792D_REG_TOLERANCE[2]) & 0x0f;
1567
1568		/* Update Smart Fan II temperature points */
1569		for (i = 0; i < 3; i++) {
1570			for (j = 0; j < 4; j++) {
1571				data->sf2_points[i][j]
1572				  = w83792d_read_value(client,
1573					W83792D_REG_POINTS[i][j]) & 0x7f;
1574			}
1575		}
1576
1577		/* Update Smart Fan II duty cycle levels */
1578		for (i = 0; i < 3; i++) {
1579			reg_tmp = w83792d_read_value(client,
1580						W83792D_REG_LEVELS[i][0]);
1581			data->sf2_levels[i][0] = reg_tmp & 0x0f;
1582			data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1583			reg_tmp = w83792d_read_value(client,
1584						W83792D_REG_LEVELS[i][2]);
1585			data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1586			data->sf2_levels[i][3] = reg_tmp & 0x0f;
1587		}
1588
1589		data->last_updated = jiffies;
1590		data->valid = true;
1591	}
1592
1593	mutex_unlock(&data->update_lock);
1594
1595#ifdef DEBUG
1596	w83792d_print_debug(data, dev);
1597#endif
1598
1599	return data;
1600}
1601
1602#ifdef DEBUG
1603static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1604{
1605	int i = 0, j = 0;
1606	dev_dbg(dev, "==========The following is the debug message...========\n");
1607	dev_dbg(dev, "9 set of Voltages: =====>\n");
1608	for (i = 0; i < 9; i++) {
1609		dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1610		dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1611		dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1612	}
1613	dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1614	dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1615	dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1616	for (i = 0; i < 7; i++) {
1617		dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1618		dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1619		dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1620	}
1621	dev_dbg(dev, "3 set of Temperatures: =====>\n");
1622	for (i = 0; i < 3; i++)
1623		dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1624
1625	for (i = 0; i < 2; i++) {
1626		for (j = 0; j < 6; j++) {
1627			dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1628							data->temp_add[i][j]);
1629		}
1630	}
1631
1632	for (i = 0; i < 7; i++)
1633		dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1634
1635	dev_dbg(dev, "==========End of the debug message...================\n");
1636	dev_dbg(dev, "\n");
1637}
1638#endif
1639
1640module_i2c_driver(w83792d_driver);
1641
1642MODULE_AUTHOR("Shane Huang (Winbond)");
1643MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1644MODULE_LICENSE("GPL");