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/drivers/hwmon/pc87360.c

https://bitbucket.org/ndreys/linux-sunxi
C | 1710 lines | 1404 code | 182 blank | 124 comment | 128 complexity | 56688e0b0e51fcd699fdf4fe3588b82d MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0

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   1/*
   2 *  pc87360.c - Part of lm_sensors, Linux kernel modules
   3 *              for hardware monitoring
   4 *  Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
   5 *
   6 *  Copied from smsc47m1.c:
   7 *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
   8 *
   9 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 *
  23 *  Supports the following chips:
  24 *
  25 *  Chip        #vin    #fan    #pwm    #temp   devid
  26 *  PC87360     -       2       2       -       0xE1
  27 *  PC87363     -       2       2       -       0xE8
  28 *  PC87364     -       3       3       -       0xE4
  29 *  PC87365     11      3       3       2       0xE5
  30 *  PC87366     11      3       3       3-4     0xE9
  31 *
  32 *  This driver assumes that no more than one chip is present, and one of
  33 *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
  34 */
  35
  36#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  37
  38#include <linux/module.h>
  39#include <linux/init.h>
  40#include <linux/slab.h>
  41#include <linux/jiffies.h>
  42#include <linux/platform_device.h>
  43#include <linux/hwmon.h>
  44#include <linux/hwmon-sysfs.h>
  45#include <linux/hwmon-vid.h>
  46#include <linux/err.h>
  47#include <linux/mutex.h>
  48#include <linux/acpi.h>
  49#include <linux/io.h>
  50
  51static u8 devid;
  52static struct platform_device *pdev;
  53static unsigned short extra_isa[3];
  54static u8 confreg[4];
  55
  56static int init = 1;
  57module_param(init, int, 0);
  58MODULE_PARM_DESC(init,
  59 "Chip initialization level:\n"
  60 " 0: None\n"
  61 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  62 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
  63 " 3: Forcibly enable all voltage and temperature channels, including in9");
  64
  65static unsigned short force_id;
  66module_param(force_id, ushort, 0);
  67MODULE_PARM_DESC(force_id, "Override the detected device ID");
  68
  69/*
  70 * Super-I/O registers and operations
  71 */
  72
  73#define DEV	0x07	/* Register: Logical device select */
  74#define DEVID	0x20	/* Register: Device ID */
  75#define ACT	0x30	/* Register: Device activation */
  76#define BASE	0x60	/* Register: Base address */
  77
  78#define FSCM	0x09	/* Logical device: fans */
  79#define VLM	0x0d	/* Logical device: voltages */
  80#define TMS	0x0e	/* Logical device: temperatures */
  81#define LDNI_MAX 3
  82static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
  83
  84#define LD_FAN		0
  85#define LD_IN		1
  86#define LD_TEMP		2
  87
  88static inline void superio_outb(int sioaddr, int reg, int val)
  89{
  90	outb(reg, sioaddr);
  91	outb(val, sioaddr+1);
  92}
  93
  94static inline int superio_inb(int sioaddr, int reg)
  95{
  96	outb(reg, sioaddr);
  97	return inb(sioaddr+1);
  98}
  99
 100static inline void superio_exit(int sioaddr)
 101{
 102	outb(0x02, sioaddr);
 103	outb(0x02, sioaddr+1);
 104}
 105
 106/*
 107 * Logical devices
 108 */
 109
 110#define PC87360_EXTENT		0x10
 111#define PC87365_REG_BANK	0x09
 112#define NO_BANK			0xff
 113
 114/*
 115 * Fan registers and conversions
 116 */
 117
 118/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 119#define PC87360_REG_PRESCALE(nr)	(0x00 + 2 * (nr))
 120#define PC87360_REG_PWM(nr)		(0x01 + 2 * (nr))
 121#define PC87360_REG_FAN_MIN(nr)		(0x06 + 3 * (nr))
 122#define PC87360_REG_FAN(nr)		(0x07 + 3 * (nr))
 123#define PC87360_REG_FAN_STATUS(nr)	(0x08 + 3 * (nr))
 124
 125#define FAN_FROM_REG(val,div)		((val) == 0 ? 0: \
 126					 480000 / ((val)*(div)))
 127#define FAN_TO_REG(val,div)		((val) <= 100 ? 0 : \
 128					 480000 / ((val)*(div)))
 129#define FAN_DIV_FROM_REG(val)		(1 << ((val >> 5) & 0x03))
 130#define FAN_STATUS_FROM_REG(val)	((val) & 0x07)
 131
 132#define FAN_CONFIG_MONITOR(val,nr)	(((val) >> (2 + nr * 3)) & 1)
 133#define FAN_CONFIG_CONTROL(val,nr)	(((val) >> (3 + nr * 3)) & 1)
 134#define FAN_CONFIG_INVERT(val,nr)	(((val) >> (4 + nr * 3)) & 1)
 135
 136#define PWM_FROM_REG(val,inv)		((inv) ? 255 - (val) : (val))
 137static inline u8 PWM_TO_REG(int val, int inv)
 138{
 139	if (inv)
 140		val = 255 - val;
 141	if (val < 0)
 142		return 0;
 143	if (val > 255)
 144		return 255;
 145	return val;
 146}
 147
 148/*
 149 * Voltage registers and conversions
 150 */
 151
 152#define PC87365_REG_IN_CONVRATE		0x07
 153#define PC87365_REG_IN_CONFIG		0x08
 154#define PC87365_REG_IN			0x0B
 155#define PC87365_REG_IN_MIN		0x0D
 156#define PC87365_REG_IN_MAX		0x0C
 157#define PC87365_REG_IN_STATUS		0x0A
 158#define PC87365_REG_IN_ALARMS1		0x00
 159#define PC87365_REG_IN_ALARMS2		0x01
 160#define PC87365_REG_VID			0x06
 161
 162#define IN_FROM_REG(val,ref)		(((val) * (ref) + 128) / 256)
 163#define IN_TO_REG(val,ref)		((val) < 0 ? 0 : \
 164					 (val)*256 >= (ref)*255 ? 255: \
 165					 ((val) * 256 + (ref)/2) / (ref))
 166
 167/*
 168 * Temperature registers and conversions
 169 */
 170
 171#define PC87365_REG_TEMP_CONFIG		0x08
 172#define PC87365_REG_TEMP		0x0B
 173#define PC87365_REG_TEMP_MIN		0x0D
 174#define PC87365_REG_TEMP_MAX		0x0C
 175#define PC87365_REG_TEMP_CRIT		0x0E
 176#define PC87365_REG_TEMP_STATUS		0x0A
 177#define PC87365_REG_TEMP_ALARMS		0x00
 178
 179#define TEMP_FROM_REG(val)		((val) * 1000)
 180#define TEMP_TO_REG(val)		((val) < -55000 ? -55 : \
 181					 (val) > 127000 ? 127 : \
 182					 (val) < 0 ? ((val) - 500) / 1000 : \
 183					 ((val) + 500) / 1000)
 184
 185/*
 186 * Device data
 187 */
 188
 189struct pc87360_data {
 190	const char *name;
 191	struct device *hwmon_dev;
 192	struct mutex lock;
 193	struct mutex update_lock;
 194	char valid;		/* !=0 if following fields are valid */
 195	unsigned long last_updated;	/* In jiffies */
 196
 197	int address[3];
 198
 199	u8 fannr, innr, tempnr;
 200
 201	u8 fan[3];		/* Register value */
 202	u8 fan_min[3];		/* Register value */
 203	u8 fan_status[3];	/* Register value */
 204	u8 pwm[3];		/* Register value */
 205	u16 fan_conf;		/* Configuration register values, combined */
 206
 207	u16 in_vref;		/* 1 mV/bit */
 208	u8 in[14];		/* Register value */
 209	u8 in_min[14];		/* Register value */
 210	u8 in_max[14];		/* Register value */
 211	u8 in_crit[3];		/* Register value */
 212	u8 in_status[14];	/* Register value */
 213	u16 in_alarms;		/* Register values, combined, masked */
 214	u8 vid_conf;		/* Configuration register value */
 215	u8 vrm;
 216	u8 vid;			/* Register value */
 217
 218	s8 temp[3];		/* Register value */
 219	s8 temp_min[3];		/* Register value */
 220	s8 temp_max[3];		/* Register value */
 221	s8 temp_crit[3];	/* Register value */
 222	u8 temp_status[3];	/* Register value */
 223	u8 temp_alarms;		/* Register value, masked */
 224};
 225
 226/*
 227 * Functions declaration
 228 */
 229
 230static int pc87360_probe(struct platform_device *pdev);
 231static int __devexit pc87360_remove(struct platform_device *pdev);
 232
 233static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 234			      u8 reg);
 235static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 236				u8 reg, u8 value);
 237static void pc87360_init_device(struct platform_device *pdev,
 238				int use_thermistors);
 239static struct pc87360_data *pc87360_update_device(struct device *dev);
 240
 241/*
 242 * Driver data
 243 */
 244
 245static struct platform_driver pc87360_driver = {
 246	.driver = {
 247		.owner	= THIS_MODULE,
 248		.name	= "pc87360",
 249	},
 250	.probe		= pc87360_probe,
 251	.remove		= __devexit_p(pc87360_remove),
 252};
 253
 254/*
 255 * Sysfs stuff
 256 */
 257
 258static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
 259{
 260	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 261	struct pc87360_data *data = pc87360_update_device(dev);
 262	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
 263		       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 264}
 265static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
 266{
 267	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 268	struct pc87360_data *data = pc87360_update_device(dev);
 269	return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
 270		       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 271}
 272static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
 273{
 274	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 275	struct pc87360_data *data = pc87360_update_device(dev);
 276	return sprintf(buf, "%u\n",
 277		       FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 278}
 279static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
 280{
 281	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 282	struct pc87360_data *data = pc87360_update_device(dev);
 283	return sprintf(buf, "%u\n",
 284		       FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
 285}
 286static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
 287	size_t count)
 288{
 289	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 290	struct pc87360_data *data = dev_get_drvdata(dev);
 291	long fan_min = simple_strtol(buf, NULL, 10);
 292
 293	mutex_lock(&data->update_lock);
 294	fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 295
 296	/* If it wouldn't fit, change clock divisor */
 297	while (fan_min > 255
 298	    && (data->fan_status[attr->index] & 0x60) != 0x60) {
 299		fan_min >>= 1;
 300		data->fan[attr->index] >>= 1;
 301		data->fan_status[attr->index] += 0x20;
 302	}
 303	data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
 304	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
 305			    data->fan_min[attr->index]);
 306
 307	/* Write new divider, preserve alarm bits */
 308	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
 309			    data->fan_status[attr->index] & 0xF9);
 310	mutex_unlock(&data->update_lock);
 311
 312	return count;
 313}
 314
 315static struct sensor_device_attribute fan_input[] = {
 316	SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
 317	SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
 318	SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
 319};
 320static struct sensor_device_attribute fan_status[] = {
 321	SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
 322	SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
 323	SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
 324};
 325static struct sensor_device_attribute fan_div[] = {
 326	SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
 327	SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
 328	SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
 329};
 330static struct sensor_device_attribute fan_min[] = {
 331	SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
 332	SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
 333	SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
 334};
 335
 336#define FAN_UNIT_ATTRS(X)	\
 337	&fan_input[X].dev_attr.attr,	\
 338	&fan_status[X].dev_attr.attr,	\
 339	&fan_div[X].dev_attr.attr,	\
 340	&fan_min[X].dev_attr.attr
 341
 342static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
 343{
 344	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 345	struct pc87360_data *data = pc87360_update_device(dev);
 346	return sprintf(buf, "%u\n",
 347		       PWM_FROM_REG(data->pwm[attr->index],
 348				    FAN_CONFIG_INVERT(data->fan_conf,
 349						      attr->index)));
 350}
 351static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
 352	size_t count)
 353{
 354	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 355	struct pc87360_data *data = dev_get_drvdata(dev);
 356	long val = simple_strtol(buf, NULL, 10);
 357
 358	mutex_lock(&data->update_lock);
 359	data->pwm[attr->index] = PWM_TO_REG(val,
 360			      FAN_CONFIG_INVERT(data->fan_conf, attr->index));
 361	pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
 362			    data->pwm[attr->index]);
 363	mutex_unlock(&data->update_lock);
 364	return count;
 365}
 366
 367static struct sensor_device_attribute pwm[] = {
 368	SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
 369	SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
 370	SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
 371};
 372
 373static struct attribute * pc8736x_fan_attr_array[] = {
 374	FAN_UNIT_ATTRS(0),
 375	FAN_UNIT_ATTRS(1),
 376	FAN_UNIT_ATTRS(2),
 377	&pwm[0].dev_attr.attr,
 378	&pwm[1].dev_attr.attr,
 379	&pwm[2].dev_attr.attr,
 380	NULL
 381};
 382static const struct attribute_group pc8736x_fan_group = {
 383	.attrs = pc8736x_fan_attr_array,
 384};
 385
 386static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
 387{
 388	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 389	struct pc87360_data *data = pc87360_update_device(dev);
 390	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 391		       data->in_vref));
 392}
 393static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
 394{
 395	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 396	struct pc87360_data *data = pc87360_update_device(dev);
 397	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 398		       data->in_vref));
 399}
 400static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
 401{
 402	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 403	struct pc87360_data *data = pc87360_update_device(dev);
 404	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 405		       data->in_vref));
 406}
 407static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
 408{
 409	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 410	struct pc87360_data *data = pc87360_update_device(dev);
 411	return sprintf(buf, "%u\n", data->in_status[attr->index]);
 412}
 413static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
 414	size_t count)
 415{
 416	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 417	struct pc87360_data *data = dev_get_drvdata(dev);
 418	long val = simple_strtol(buf, NULL, 10);
 419
 420	mutex_lock(&data->update_lock);
 421	data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 422	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
 423			    data->in_min[attr->index]);
 424	mutex_unlock(&data->update_lock);
 425	return count;
 426}
 427static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
 428	size_t count)
 429{
 430	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 431	struct pc87360_data *data = dev_get_drvdata(dev);
 432	long val = simple_strtol(buf, NULL, 10);
 433
 434	mutex_lock(&data->update_lock);
 435	data->in_max[attr->index] = IN_TO_REG(val,
 436			       data->in_vref);
 437	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
 438			    data->in_max[attr->index]);
 439	mutex_unlock(&data->update_lock);
 440	return count;
 441}
 442
 443static struct sensor_device_attribute in_input[] = {
 444	SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
 445	SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
 446	SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
 447	SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
 448	SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
 449	SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
 450	SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
 451	SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
 452	SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
 453	SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
 454	SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
 455};
 456static struct sensor_device_attribute in_status[] = {
 457	SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
 458	SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
 459	SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
 460	SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
 461	SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
 462	SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
 463	SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
 464	SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
 465	SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
 466	SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
 467	SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
 468};
 469static struct sensor_device_attribute in_min[] = {
 470	SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
 471	SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
 472	SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
 473	SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
 474	SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
 475	SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
 476	SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
 477	SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
 478	SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
 479	SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
 480	SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
 481};
 482static struct sensor_device_attribute in_max[] = {
 483	SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
 484	SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
 485	SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
 486	SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
 487	SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
 488	SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
 489	SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
 490	SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
 491	SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
 492	SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
 493	SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
 494};
 495
 496/* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
 497#define CHAN_ALM_MIN	0x02	/* min limit crossed */
 498#define CHAN_ALM_MAX	0x04	/* max limit exceeded */
 499#define TEMP_ALM_CRIT	0x08	/* temp crit exceeded (temp only) */
 500
 501/* show_in_min/max_alarm() reads data from the per-channel status
 502   register (sec 11.5.12), not the vin event status registers (sec
 503   11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms) */
 504
 505static ssize_t show_in_min_alarm(struct device *dev,
 506			struct device_attribute *devattr, char *buf)
 507{
 508	struct pc87360_data *data = pc87360_update_device(dev);
 509	unsigned nr = to_sensor_dev_attr(devattr)->index;
 510
 511	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 512}
 513static ssize_t show_in_max_alarm(struct device *dev,
 514			struct device_attribute *devattr, char *buf)
 515{
 516	struct pc87360_data *data = pc87360_update_device(dev);
 517	unsigned nr = to_sensor_dev_attr(devattr)->index;
 518
 519	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 520}
 521
 522static struct sensor_device_attribute in_min_alarm[] = {
 523	SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
 524	SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
 525	SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
 526	SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
 527	SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
 528	SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
 529	SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
 530	SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
 531	SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
 532	SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
 533	SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
 534};
 535static struct sensor_device_attribute in_max_alarm[] = {
 536	SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
 537	SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
 538	SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
 539	SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
 540	SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
 541	SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
 542	SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
 543	SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
 544	SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
 545	SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
 546	SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
 547};
 548
 549#define VIN_UNIT_ATTRS(X) \
 550	&in_input[X].dev_attr.attr,	\
 551	&in_status[X].dev_attr.attr,	\
 552	&in_min[X].dev_attr.attr,	\
 553	&in_max[X].dev_attr.attr,	\
 554	&in_min_alarm[X].dev_attr.attr,	\
 555	&in_max_alarm[X].dev_attr.attr
 556
 557static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 558{
 559	struct pc87360_data *data = pc87360_update_device(dev);
 560	return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 561}
 562static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 563
 564static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
 565{
 566	struct pc87360_data *data = dev_get_drvdata(dev);
 567	return sprintf(buf, "%u\n", data->vrm);
 568}
 569static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 570{
 571	struct pc87360_data *data = dev_get_drvdata(dev);
 572	data->vrm = simple_strtoul(buf, NULL, 10);
 573	return count;
 574}
 575static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 576
 577static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 578{
 579	struct pc87360_data *data = pc87360_update_device(dev);
 580	return sprintf(buf, "%u\n", data->in_alarms);
 581}
 582static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 583
 584static struct attribute *pc8736x_vin_attr_array[] = {
 585	VIN_UNIT_ATTRS(0),
 586	VIN_UNIT_ATTRS(1),
 587	VIN_UNIT_ATTRS(2),
 588	VIN_UNIT_ATTRS(3),
 589	VIN_UNIT_ATTRS(4),
 590	VIN_UNIT_ATTRS(5),
 591	VIN_UNIT_ATTRS(6),
 592	VIN_UNIT_ATTRS(7),
 593	VIN_UNIT_ATTRS(8),
 594	VIN_UNIT_ATTRS(9),
 595	VIN_UNIT_ATTRS(10),
 596	&dev_attr_cpu0_vid.attr,
 597	&dev_attr_vrm.attr,
 598	&dev_attr_alarms_in.attr,
 599	NULL
 600};
 601static const struct attribute_group pc8736x_vin_group = {
 602	.attrs = pc8736x_vin_attr_array,
 603};
 604
 605static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
 606{
 607	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 608	struct pc87360_data *data = pc87360_update_device(dev);
 609	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 610		       data->in_vref));
 611}
 612static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
 613{
 614	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 615	struct pc87360_data *data = pc87360_update_device(dev);
 616	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 617		       data->in_vref));
 618}
 619static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
 620{
 621	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 622	struct pc87360_data *data = pc87360_update_device(dev);
 623	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 624		       data->in_vref));
 625}
 626static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
 627{
 628	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 629	struct pc87360_data *data = pc87360_update_device(dev);
 630	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
 631		       data->in_vref));
 632}
 633static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
 634{
 635	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 636	struct pc87360_data *data = pc87360_update_device(dev);
 637	return sprintf(buf, "%u\n", data->in_status[attr->index]);
 638}
 639static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
 640	size_t count)
 641{
 642	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 643	struct pc87360_data *data = dev_get_drvdata(dev);
 644	long val = simple_strtol(buf, NULL, 10);
 645
 646	mutex_lock(&data->update_lock);
 647	data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 648	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
 649			    data->in_min[attr->index]);
 650	mutex_unlock(&data->update_lock);
 651	return count;
 652}
 653static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
 654	size_t count)
 655{
 656	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 657	struct pc87360_data *data = dev_get_drvdata(dev);
 658	long val = simple_strtol(buf, NULL, 10);
 659
 660	mutex_lock(&data->update_lock);
 661	data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
 662	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
 663			    data->in_max[attr->index]);
 664	mutex_unlock(&data->update_lock);
 665	return count;
 666}
 667static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
 668	size_t count)
 669{
 670	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 671	struct pc87360_data *data = dev_get_drvdata(dev);
 672	long val = simple_strtol(buf, NULL, 10);
 673
 674	mutex_lock(&data->update_lock);
 675	data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
 676	pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
 677			    data->in_crit[attr->index-11]);
 678	mutex_unlock(&data->update_lock);
 679	return count;
 680}
 681
 682/* the +11 term below reflects the fact that VLM units 11,12,13 are
 683   used in the chip to measure voltage across the thermistors
 684*/
 685static struct sensor_device_attribute therm_input[] = {
 686	SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
 687	SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
 688	SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
 689};
 690static struct sensor_device_attribute therm_status[] = {
 691	SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
 692	SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
 693	SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
 694};
 695static struct sensor_device_attribute therm_min[] = {
 696	SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
 697		    show_therm_min, set_therm_min, 0+11),
 698	SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
 699		    show_therm_min, set_therm_min, 1+11),
 700	SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
 701		    show_therm_min, set_therm_min, 2+11),
 702};
 703static struct sensor_device_attribute therm_max[] = {
 704	SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
 705		    show_therm_max, set_therm_max, 0+11),
 706	SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
 707		    show_therm_max, set_therm_max, 1+11),
 708	SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
 709		    show_therm_max, set_therm_max, 2+11),
 710};
 711static struct sensor_device_attribute therm_crit[] = {
 712	SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
 713		    show_therm_crit, set_therm_crit, 0+11),
 714	SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
 715		    show_therm_crit, set_therm_crit, 1+11),
 716	SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
 717		    show_therm_crit, set_therm_crit, 2+11),
 718};
 719
 720/* show_therm_min/max_alarm() reads data from the per-channel voltage
 721   status register (sec 11.5.12) */
 722
 723static ssize_t show_therm_min_alarm(struct device *dev,
 724				struct device_attribute *devattr, char *buf)
 725{
 726	struct pc87360_data *data = pc87360_update_device(dev);
 727	unsigned nr = to_sensor_dev_attr(devattr)->index;
 728
 729	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 730}
 731static ssize_t show_therm_max_alarm(struct device *dev,
 732				struct device_attribute *devattr, char *buf)
 733{
 734	struct pc87360_data *data = pc87360_update_device(dev);
 735	unsigned nr = to_sensor_dev_attr(devattr)->index;
 736
 737	return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 738}
 739static ssize_t show_therm_crit_alarm(struct device *dev,
 740				struct device_attribute *devattr, char *buf)
 741{
 742	struct pc87360_data *data = pc87360_update_device(dev);
 743	unsigned nr = to_sensor_dev_attr(devattr)->index;
 744
 745	return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
 746}
 747
 748static struct sensor_device_attribute therm_min_alarm[] = {
 749	SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
 750		    show_therm_min_alarm, NULL, 0+11),
 751	SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
 752		    show_therm_min_alarm, NULL, 1+11),
 753	SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
 754		    show_therm_min_alarm, NULL, 2+11),
 755};
 756static struct sensor_device_attribute therm_max_alarm[] = {
 757	SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
 758		    show_therm_max_alarm, NULL, 0+11),
 759	SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
 760		    show_therm_max_alarm, NULL, 1+11),
 761	SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
 762		    show_therm_max_alarm, NULL, 2+11),
 763};
 764static struct sensor_device_attribute therm_crit_alarm[] = {
 765	SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
 766		    show_therm_crit_alarm, NULL, 0+11),
 767	SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
 768		    show_therm_crit_alarm, NULL, 1+11),
 769	SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
 770		    show_therm_crit_alarm, NULL, 2+11),
 771};
 772
 773#define THERM_UNIT_ATTRS(X) \
 774	&therm_input[X].dev_attr.attr,	\
 775	&therm_status[X].dev_attr.attr,	\
 776	&therm_min[X].dev_attr.attr,	\
 777	&therm_max[X].dev_attr.attr,	\
 778	&therm_crit[X].dev_attr.attr,	\
 779	&therm_min_alarm[X].dev_attr.attr, \
 780	&therm_max_alarm[X].dev_attr.attr, \
 781	&therm_crit_alarm[X].dev_attr.attr
 782
 783static struct attribute * pc8736x_therm_attr_array[] = {
 784	THERM_UNIT_ATTRS(0),
 785	THERM_UNIT_ATTRS(1),
 786	THERM_UNIT_ATTRS(2),
 787	NULL
 788};
 789static const struct attribute_group pc8736x_therm_group = {
 790	.attrs = pc8736x_therm_attr_array,
 791};
 792
 793static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
 794{
 795	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 796	struct pc87360_data *data = pc87360_update_device(dev);
 797	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 798}
 799static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
 800{
 801	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 802	struct pc87360_data *data = pc87360_update_device(dev);
 803	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
 804}
 805static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf)
 806{
 807	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 808	struct pc87360_data *data = pc87360_update_device(dev);
 809	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
 810}
 811static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
 812{
 813	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 814	struct pc87360_data *data = pc87360_update_device(dev);
 815	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
 816}
 817static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
 818{
 819	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 820	struct pc87360_data *data = pc87360_update_device(dev);
 821	return sprintf(buf, "%d\n", data->temp_status[attr->index]);
 822}
 823static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
 824	size_t count)
 825{
 826	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 827	struct pc87360_data *data = dev_get_drvdata(dev);
 828	long val = simple_strtol(buf, NULL, 10);
 829
 830	mutex_lock(&data->update_lock);
 831	data->temp_min[attr->index] = TEMP_TO_REG(val);
 832	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
 833			    data->temp_min[attr->index]);
 834	mutex_unlock(&data->update_lock);
 835	return count;
 836}
 837static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
 838	size_t count)
 839{
 840	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 841	struct pc87360_data *data = dev_get_drvdata(dev);
 842	long val = simple_strtol(buf, NULL, 10);
 843
 844	mutex_lock(&data->update_lock);
 845	data->temp_max[attr->index] = TEMP_TO_REG(val);
 846	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
 847			    data->temp_max[attr->index]);
 848	mutex_unlock(&data->update_lock);
 849	return count;
 850}
 851static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
 852	size_t count)
 853{
 854	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 855	struct pc87360_data *data = dev_get_drvdata(dev);
 856	long val = simple_strtol(buf, NULL, 10);
 857
 858	mutex_lock(&data->update_lock);
 859	data->temp_crit[attr->index] = TEMP_TO_REG(val);
 860	pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
 861			    data->temp_crit[attr->index]);
 862	mutex_unlock(&data->update_lock);
 863	return count;
 864}
 865
 866static struct sensor_device_attribute temp_input[] = {
 867	SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
 868	SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
 869	SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
 870};
 871static struct sensor_device_attribute temp_status[] = {
 872	SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
 873	SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
 874	SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
 875};
 876static struct sensor_device_attribute temp_min[] = {
 877	SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
 878		    show_temp_min, set_temp_min, 0),
 879	SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
 880		    show_temp_min, set_temp_min, 1),
 881	SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
 882		    show_temp_min, set_temp_min, 2),
 883};
 884static struct sensor_device_attribute temp_max[] = {
 885	SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 886		    show_temp_max, set_temp_max, 0),
 887	SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 888		    show_temp_max, set_temp_max, 1),
 889	SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 890		    show_temp_max, set_temp_max, 2),
 891};
 892static struct sensor_device_attribute temp_crit[] = {
 893	SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
 894		    show_temp_crit, set_temp_crit, 0),
 895	SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
 896		    show_temp_crit, set_temp_crit, 1),
 897	SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
 898		    show_temp_crit, set_temp_crit, 2),
 899};
 900
 901static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 902{
 903	struct pc87360_data *data = pc87360_update_device(dev);
 904	return sprintf(buf, "%u\n", data->temp_alarms);
 905}
 906static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 907
 908/* show_temp_min/max_alarm() reads data from the per-channel status
 909   register (sec 12.3.7), not the temp event status registers (sec
 910   12.3.2) that show_temp_alarm() reads (via data->temp_alarms) */
 911
 912static ssize_t show_temp_min_alarm(struct device *dev,
 913			struct device_attribute *devattr, char *buf)
 914{
 915	struct pc87360_data *data = pc87360_update_device(dev);
 916	unsigned nr = to_sensor_dev_attr(devattr)->index;
 917
 918	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
 919}
 920static ssize_t show_temp_max_alarm(struct device *dev,
 921			struct device_attribute *devattr, char *buf)
 922{
 923	struct pc87360_data *data = pc87360_update_device(dev);
 924	unsigned nr = to_sensor_dev_attr(devattr)->index;
 925
 926	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
 927}
 928static ssize_t show_temp_crit_alarm(struct device *dev,
 929			struct device_attribute *devattr, char *buf)
 930{
 931	struct pc87360_data *data = pc87360_update_device(dev);
 932	unsigned nr = to_sensor_dev_attr(devattr)->index;
 933
 934	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
 935}
 936
 937static struct sensor_device_attribute temp_min_alarm[] = {
 938	SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
 939	SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
 940	SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
 941};
 942static struct sensor_device_attribute temp_max_alarm[] = {
 943	SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
 944	SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
 945	SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
 946};
 947static struct sensor_device_attribute temp_crit_alarm[] = {
 948	SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
 949	SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
 950	SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
 951};
 952
 953#define TEMP_FAULT	0x40	/* open diode */
 954static ssize_t show_temp_fault(struct device *dev,
 955			struct device_attribute *devattr, char *buf)
 956{
 957	struct pc87360_data *data = pc87360_update_device(dev);
 958	unsigned nr = to_sensor_dev_attr(devattr)->index;
 959
 960	return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
 961}
 962static struct sensor_device_attribute temp_fault[] = {
 963	SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
 964	SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
 965	SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
 966};
 967
 968#define TEMP_UNIT_ATTRS(X) \
 969	&temp_input[X].dev_attr.attr,	\
 970	&temp_status[X].dev_attr.attr,	\
 971	&temp_min[X].dev_attr.attr,	\
 972	&temp_max[X].dev_attr.attr,	\
 973	&temp_crit[X].dev_attr.attr,	\
 974	&temp_min_alarm[X].dev_attr.attr, \
 975	&temp_max_alarm[X].dev_attr.attr, \
 976	&temp_crit_alarm[X].dev_attr.attr, \
 977	&temp_fault[X].dev_attr.attr
 978
 979static struct attribute * pc8736x_temp_attr_array[] = {
 980	TEMP_UNIT_ATTRS(0),
 981	TEMP_UNIT_ATTRS(1),
 982	TEMP_UNIT_ATTRS(2),
 983	/* include the few miscellaneous atts here */
 984	&dev_attr_alarms_temp.attr,
 985	NULL
 986};
 987static const struct attribute_group pc8736x_temp_group = {
 988	.attrs = pc8736x_temp_attr_array,
 989};
 990
 991static ssize_t show_name(struct device *dev,
 992			struct device_attribute *devattr, char *buf)
 993{
 994	struct pc87360_data *data = dev_get_drvdata(dev);
 995	return sprintf(buf, "%s\n", data->name);
 996}
 997static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 998
 999/*
1000 * Device detection, registration and update
1001 */
1002
1003static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
1004{
1005	u16 val;
1006	int i;
1007	int nrdev; /* logical device count */
1008
1009	/* No superio_enter */
1010
1011	/* Identify device */
1012	val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1013	switch (val) {
1014	case 0xE1: /* PC87360 */
1015	case 0xE8: /* PC87363 */
1016	case 0xE4: /* PC87364 */
1017		nrdev = 1;
1018		break;
1019	case 0xE5: /* PC87365 */
1020	case 0xE9: /* PC87366 */
1021		nrdev = 3;
1022		break;
1023	default:
1024		superio_exit(sioaddr);
1025		return -ENODEV;
1026	}
1027	/* Remember the device id */
1028	*devid = val;
1029
1030	for (i = 0; i < nrdev; i++) {
1031		/* select logical device */
1032		superio_outb(sioaddr, DEV, logdev[i]);
1033
1034		val = superio_inb(sioaddr, ACT);
1035		if (!(val & 0x01)) {
1036			pr_info("Device 0x%02x not activated\n", logdev[i]);
1037			continue;
1038		}
1039
1040		val = (superio_inb(sioaddr, BASE) << 8)
1041		    | superio_inb(sioaddr, BASE + 1);
1042		if (!val) {
1043			pr_info("Base address not set for device 0x%02x\n",
1044				logdev[i]);
1045			continue;
1046		}
1047
1048		addresses[i] = val;
1049
1050		if (i==0) { /* Fans */
1051			confreg[0] = superio_inb(sioaddr, 0xF0);
1052			confreg[1] = superio_inb(sioaddr, 0xF1);
1053
1054			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1055				 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1056				 (confreg[0] >> 4) & 1);
1057			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1058				 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1059				 (confreg[0] >> 7) & 1);
1060			pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1061				 confreg[1] & 1, (confreg[1] >> 1) & 1,
1062				 (confreg[1] >> 2) & 1);
1063		} else if (i==1) { /* Voltages */
1064			/* Are we using thermistors? */
1065			if (*devid == 0xE9) { /* PC87366 */
1066				/* These registers are not logical-device
1067				   specific, just that we won't need them if
1068				   we don't use the VLM device */
1069				confreg[2] = superio_inb(sioaddr, 0x2B);
1070				confreg[3] = superio_inb(sioaddr, 0x25);
1071
1072				if (confreg[2] & 0x40) {
1073					pr_info("Using thermistors for "
1074						"temperature monitoring\n");
1075				}
1076				if (confreg[3] & 0xE0) {
1077					pr_info("VID inputs routed (mode %u)\n",
1078						confreg[3] >> 5);
1079				}
1080			}
1081		}
1082	}
1083
1084	superio_exit(sioaddr);
1085	return 0;
1086}
1087
1088static int __devinit pc87360_probe(struct platform_device *pdev)
1089{
1090	int i;
1091	struct pc87360_data *data;
1092	int err = 0;
1093	const char *name = "pc87360";
1094	int use_thermistors = 0;
1095	struct device *dev = &pdev->dev;
1096
1097	if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
1098		return -ENOMEM;
1099
1100	data->fannr = 2;
1101	data->innr = 0;
1102	data->tempnr = 0;
1103
1104	switch (devid) {
1105	case 0xe8:
1106		name = "pc87363";
1107		break;
1108	case 0xe4:
1109		name = "pc87364";
1110		data->fannr = 3;
1111		break;
1112	case 0xe5:
1113		name = "pc87365";
1114		data->fannr = extra_isa[0] ? 3 : 0;
1115		data->innr = extra_isa[1] ? 11 : 0;
1116		data->tempnr = extra_isa[2] ? 2 : 0;
1117		break;
1118	case 0xe9:
1119		name = "pc87366";
1120		data->fannr = extra_isa[0] ? 3 : 0;
1121		data->innr = extra_isa[1] ? 14 : 0;
1122		data->tempnr = extra_isa[2] ? 3 : 0;
1123		break;
1124	}
1125
1126	data->name = name;
1127	data->valid = 0;
1128	mutex_init(&data->lock);
1129	mutex_init(&data->update_lock);
1130	platform_set_drvdata(pdev, data);
1131
1132	for (i = 0; i < LDNI_MAX; i++) {
1133		if (((data->address[i] = extra_isa[i]))
1134		 && !request_region(extra_isa[i], PC87360_EXTENT,
1135		 		    pc87360_driver.driver.name)) {
1136			dev_err(dev, "Region 0x%x-0x%x already "
1137				"in use!\n", extra_isa[i],
1138				extra_isa[i]+PC87360_EXTENT-1);
1139			for (i--; i >= 0; i--)
1140				release_region(extra_isa[i], PC87360_EXTENT);
1141			err = -EBUSY;
1142			goto ERROR1;
1143		}
1144	}
1145
1146	/* Retrieve the fans configuration from Super-I/O space */
1147	if (data->fannr)
1148		data->fan_conf = confreg[0] | (confreg[1] << 8);
1149
1150	/* Use the correct reference voltage
1151	   Unless both the VLM and the TMS logical devices agree to
1152	   use an external Vref, the internal one is used. */
1153	if (data->innr) {
1154		i = pc87360_read_value(data, LD_IN, NO_BANK,
1155				       PC87365_REG_IN_CONFIG);
1156		if (data->tempnr) {
1157			i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1158						PC87365_REG_TEMP_CONFIG);
1159		}
1160		data->in_vref = (i&0x02) ? 3025 : 2966;
1161		dev_dbg(dev, "Using %s reference voltage\n",
1162			(i&0x02) ? "external" : "internal");
1163
1164		data->vid_conf = confreg[3];
1165		data->vrm = vid_which_vrm();
1166	}
1167
1168	/* Fan clock dividers may be needed before any data is read */
1169	for (i = 0; i < data->fannr; i++) {
1170		if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1171			data->fan_status[i] = pc87360_read_value(data,
1172					      LD_FAN, NO_BANK,
1173					      PC87360_REG_FAN_STATUS(i));
1174	}
1175
1176	if (init > 0) {
1177		if (devid == 0xe9 && data->address[1]) /* PC87366 */
1178			use_thermistors = confreg[2] & 0x40;
1179
1180		pc87360_init_device(pdev, use_thermistors);
1181	}
1182
1183	/* Register all-or-nothing sysfs groups */
1184
1185	if (data->innr &&
1186	    (err = sysfs_create_group(&dev->kobj,
1187				      &pc8736x_vin_group)))
1188		goto ERROR3;
1189
1190	if (data->innr == 14 &&
1191	    (err = sysfs_create_group(&dev->kobj,
1192				      &pc8736x_therm_group)))
1193		goto ERROR3;
1194
1195	/* create device attr-files for varying sysfs groups */
1196
1197	if (data->tempnr) {
1198		for (i = 0; i < data->tempnr; i++) {
1199			if ((err = device_create_file(dev,
1200					&temp_input[i].dev_attr))
1201			    || (err = device_create_file(dev,
1202					&temp_min[i].dev_attr))
1203			    || (err = device_create_file(dev,
1204					&temp_max[i].dev_attr))
1205			    || (err = device_create_file(dev,
1206					&temp_crit[i].dev_attr))
1207			    || (err = device_create_file(dev,
1208					&temp_status[i].dev_attr))
1209			    || (err = device_create_file(dev,
1210					&temp_min_alarm[i].dev_attr))
1211			    || (err = device_create_file(dev,
1212					&temp_max_alarm[i].dev_attr))
1213			    || (err = device_create_file(dev,
1214					&temp_crit_alarm[i].dev_attr))
1215			    || (err = device_create_file(dev,
1216					&temp_fault[i].dev_attr)))
1217				goto ERROR3;
1218		}
1219		if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
1220			goto ERROR3;
1221	}
1222
1223	for (i = 0; i < data->fannr; i++) {
1224		if (FAN_CONFIG_MONITOR(data->fan_conf, i)
1225		    && ((err = device_create_file(dev,
1226					&fan_input[i].dev_attr))
1227			|| (err = device_create_file(dev,
1228					&fan_min[i].dev_attr))
1229			|| (err = device_create_file(dev,
1230					&fan_div[i].dev_attr))
1231			|| (err = device_create_file(dev,
1232					&fan_status[i].dev_attr))))
1233			goto ERROR3;
1234
1235		if (FAN_CONFIG_CONTROL(data->fan_conf, i)
1236		    && (err = device_create_file(dev, &pwm[i].dev_attr)))
1237			goto ERROR3;
1238	}
1239
1240	if ((err = device_create_file(dev, &dev_attr_name)))
1241		goto ERROR3;
1242
1243	data->hwmon_dev = hwmon_device_register(dev);
1244	if (IS_ERR(data->hwmon_dev)) {
1245		err = PTR_ERR(data->hwmon_dev);
1246		goto ERROR3;
1247	}
1248	return 0;
1249
1250ERROR3:
1251	device_remove_file(dev, &dev_attr_name);
1252	/* can still remove groups whose members were added individually */
1253	sysfs_remove_group(&dev->kobj, &pc8736x_temp_group);
1254	sysfs_remove_group(&dev->kobj, &pc8736x_fan_group);
1255	sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1256	sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1257	for (i = 0; i < 3; i++) {
1258		if (data->address[i]) {
1259			release_region(data->address[i], PC87360_EXTENT);
1260		}
1261	}
1262ERROR1:
1263	kfree(data);
1264	return err;
1265}
1266
1267static int __devexit pc87360_remove(struct platform_device *pdev)
1268{
1269	struct pc87360_data *data = platform_get_drvdata(pdev);
1270	int i;
1271
1272	hwmon_device_unregister(data->hwmon_dev);
1273
1274	device_remove_file(&pdev->dev, &dev_attr_name);
1275	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_temp_group);
1276	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_group);
1277	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_therm_group);
1278	sysfs_remove_group(&pdev->dev.kobj, &pc8736x_vin_group);
1279
1280	for (i = 0; i < 3; i++) {
1281		if (data->address[i]) {
1282			release_region(data->address[i], PC87360_EXTENT);
1283		}
1284	}
1285	kfree(data);
1286
1287	return 0;
1288}
1289
1290/* ldi is the logical device index
1291   bank is for voltages and temperatures only */
1292static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1293			      u8 reg)
1294{
1295	int res;
1296
1297	mutex_lock(&(data->lock));
1298	if (bank != NO_BANK)
1299		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1300	res = inb_p(data->address[ldi] + reg);
1301	mutex_unlock(&(data->lock));
1302
1303	return res;
1304}
1305
1306static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1307				u8 reg, u8 value)
1308{
1309	mutex_lock(&(data->lock));
1310	if (bank != NO_BANK)
1311		outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1312	outb_p(value, data->address[ldi] + reg);
1313	mutex_unlock(&(data->lock));
1314}
1315
1316/* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1317#define CHAN_CNVRTD	0x80	/* new data ready */
1318#define CHAN_ENA	0x01	/* enabled channel (temp or vin) */
1319#define CHAN_ALM_ENA	0x10	/* propagate to alarms-reg ?? (chk val!) */
1320#define CHAN_READY	(CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1321
1322#define TEMP_OTS_OE	0x20	/* OTS Output Enable */
1323#define VIN_RW1C_MASK	(CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1324#define TEMP_RW1C_MASK	(VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1325
1326static void pc87360_init_device(struct platform_device *pdev,
1327				int use_thermistors)
1328{
1329	struct pc87360_data *data = platform_get_drvdata(pdev);
1330	int i, nr;
1331	const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1332	const u8 init_temp[3] = { 2, 2, 1 };
1333	u8 reg;
1334
1335	if (init >= 2 && data->innr) {
1336		reg = pc87360_read_value(data, LD_IN, NO_BANK,
1337					 PC87365_REG_IN_CONVRATE);
1338		dev_info(&pdev->dev, "VLM conversion set to "
1339			 "1s period, 160us delay\n");
1340		pc87360_write_value(data, LD_IN, NO_BANK,
1341				    PC87365_REG_IN_CONVRATE,
1342				    (reg & 0xC0) | 0x11);
1343	}
1344
1345	nr = data->innr < 11 ? data->innr : 11;
1346	for (i = 0; i < nr; i++) {
1347		reg = pc87360_read_value(data, LD_IN, i,
1348					 PC87365_REG_IN_STATUS);
1349		dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1350		if (init >= init_in[i]) {
1351			/* Forcibly enable voltage channel */
1352			if (!(reg & CHAN_ENA)) {
1353				dev_dbg(&pdev->dev, "Forcibly "
1354					"enabling in%d\n", i);
1355				pc87360_write_value(data, LD_IN, i,
1356						    PC87365_REG_IN_STATUS,
1357						    (reg & 0x68) | 0x87);
1358			}
1359		}
1360	}
1361
1362	/* We can't blindly trust the Super-I/O space configuration bit,
1363	   most BIOS won't set it properly */
1364	dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1365	for (i = 11; i < data->innr; i++) {
1366		reg = pc87360_read_value(data, LD_IN, i,
1367					 PC87365_REG_TEMP_STATUS);
1368		use_thermistors = use_thermistors || (reg & CHAN_ENA);
1369		/* thermistors are temp[4-6], measured on vin[11-14] */
1370		dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1371	}
1372	dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1373
1374	i = use_thermistors ? 2 : 0;
1375	for (; i < data->tempnr; i++) {
1376		reg = pc87360_read_value(data, LD_TEMP, i,
1377					 PC87365_REG_TEMP_STATUS);
1378		dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i+1, reg);
1379		if (init >= init_temp[i]) {
1380			/* Forcibly enable temperature channel */
1381			if (!(reg & CHAN_ENA)) {
1382				dev_dbg(&pdev->dev, "Forcibly "
1383					"enabling temp%d\n", i+1);
1384				pc87360_write_value(data, LD_TEMP, i,
1385						    PC87365_REG_TEMP_STATUS,
1386						    0xCF);
1387			}
1388		}
1389	}
1390
1391	if (use_thermistors) {
1392		for (i = 11; i < data->innr; i++) {
1393			if (init >= init_in[i]) {
1394				/* The pin may already be used by thermal
1395				   diodes */
1396				reg = pc87360_read_value(data, LD_TEMP,
1397				      (i-11)/2, PC87365_REG_TEMP_STATUS);
1398				if (reg & CHAN_ENA) {
1399					dev_dbg(&pdev->dev, "Skipping "
1400						"temp%d, pin already in use "
1401						"by temp%d\n", i-7, (i-11)/2);
1402					continue;
1403				}
1404
1405				/* Forcibly enable thermistor channel */
1406				reg = pc87360_read_value(data, LD_IN, i,
1407							 PC87365_REG_IN_STATUS);
1408				if (!(reg & CHAN_ENA)) {
1409					dev_dbg(&pdev->dev, "Forcibly "
1410						"enabling temp%d\n", i-7);
1411					pc87360_write_value(data, LD_IN, i,
1412						PC87365_REG_TEMP_STATUS,
1413						(reg & 0x60) | 0x8F);
1414				}
1415			}
1416		}
1417	}
1418
1419	if (data->innr) {
1420		reg = pc87360_read_value(data, LD_IN, NO_BANK,
1421					 PC87365_REG_IN_CONFIG);
1422		dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1423		if (reg & CHAN_ENA) {
1424			dev_dbg(&pdev->dev, "Forcibly "
1425				"enabling monitoring (VLM)\n");
1426			pc87360_write_value(data, LD_IN, NO_BANK,
1427					    PC87365_REG_IN_CONFIG,
1428					    reg & 0xFE);
1429		}
1430	}
1431
1432	if (data->tempnr) {
1433		reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1434					 PC87365_REG_TEMP_CONFIG);
1435		dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1436		if (reg & CHAN_ENA) {
1437			dev_dbg(&pdev->dev, "Forcibly enabling "
1438				"monitoring (TMS)\n");
1439			pc87360_write_value(data, LD_TEMP, NO_BANK,
1440					    PC87365_REG_TEMP_CONFIG,
1441					    reg & 0xFE);
1442		}
1443
1444		if (init >= 2) {
1445			/* Chip config as documented by National Semi. */
1446			pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1447			/* We voluntarily omit the bank here, in case the
1448			   sequence itself matters. It shouldn't be a problem,
1449			   since nobody else is supposed to access the
1450			   device at that point. */
1451			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1452			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1453			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1454			pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1455		}
1456	}
1457}
1458
1459static void pc87360_autodiv(struct device *dev, int nr)
1460{
1461	struct pc87360_data *data = d

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