1/*
   2    adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
   3	     monitoring
   4    Copyright (C) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
   5    Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
   6
   7    Chip details at:
   8
   9    <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24*/
  25
  26#include <linux/module.h>
  27#include <linux/init.h>
  28#include <linux/slab.h>
  29#include <linux/jiffies.h>
  30#include <linux/i2c.h>
  31#include <linux/hwmon.h>
  32#include <linux/hwmon-sysfs.h>
  33#include <linux/hwmon-vid.h>
  34#include <linux/err.h>
  35#include <linux/mutex.h>
  36
  37/* Addresses to scan */
  38static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  39
  40static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  41				-1, -1, -1, -1, -1, -1, -1, -1 };
  42static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  43				-1, -1, -1, -1, -1, -1, -1, -1 };
  44static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  45				-1, -1, -1, -1, -1, -1, -1, -1 };
  46static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  47				-1, -1, -1, -1, -1, -1, -1, -1 };
  48static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
  49module_param_array(gpio_input, int, NULL, 0);
  50MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
  51module_param_array(gpio_output, int, NULL, 0);
  52MODULE_PARM_DESC(gpio_output, "List of GPIO pins (0-16) to program as "
  53	"outputs");
  54module_param_array(gpio_inverted, int, NULL, 0);
  55MODULE_PARM_DESC(gpio_inverted, "List of GPIO pins (0-16) to program as "
  56	"inverted");
  57module_param_array(gpio_normal, int, NULL, 0);
  58MODULE_PARM_DESC(gpio_normal, "List of GPIO pins (0-16) to program as "
  59	"normal/non-inverted");
  60module_param_array(gpio_fan, int, NULL, 0);
  61MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");
  62
  63/* Many ADM1026 constants specified below */
  64
  65/* The ADM1026 registers */
  66#define ADM1026_REG_CONFIG1	0x00
  67#define CFG1_MONITOR		0x01
  68#define CFG1_INT_ENABLE		0x02
  69#define CFG1_INT_CLEAR		0x04
  70#define CFG1_AIN8_9		0x08
  71#define CFG1_THERM_HOT		0x10
  72#define CFG1_DAC_AFC		0x20
  73#define CFG1_PWM_AFC		0x40
  74#define CFG1_RESET		0x80
  75
  76#define ADM1026_REG_CONFIG2	0x01
  77/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
  78
  79#define ADM1026_REG_CONFIG3	0x07
  80#define CFG3_GPIO16_ENABLE	0x01
  81#define CFG3_CI_CLEAR		0x02
  82#define CFG3_VREF_250		0x04
  83#define CFG3_GPIO16_DIR		0x40
  84#define CFG3_GPIO16_POL		0x80
  85
  86#define ADM1026_REG_E2CONFIG	0x13
  87#define E2CFG_READ		0x01
  88#define E2CFG_WRITE		0x02
  89#define E2CFG_ERASE		0x04
  90#define E2CFG_ROM		0x08
  91#define E2CFG_CLK_EXT		0x80
  92
  93/* There are 10 general analog inputs and 7 dedicated inputs
 
  94 * They are:
  95 *    0 - 9  =  AIN0 - AIN9
  96 *       10  =  Vbat
  97 *       11  =  3.3V Standby
  98 *       12  =  3.3V Main
  99 *       13  =  +5V
 100 *       14  =  Vccp (CPU core voltage)
 101 *       15  =  +12V
 102 *       16  =  -12V
 103 */
 104static u16 ADM1026_REG_IN[] = {
 105		0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
 106		0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
 107		0x2b, 0x2c, 0x2d, 0x2e, 0x2f
 108	};
 109static u16 ADM1026_REG_IN_MIN[] = {
 110		0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
 111		0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
 112		0x4b, 0x4c, 0x4d, 0x4e, 0x4f
 113	};
 114static u16 ADM1026_REG_IN_MAX[] = {
 115		0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
 116		0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
 117		0x43, 0x44, 0x45, 0x46, 0x47
 118	};
 119
 120/* Temperatures are:
 
 121 *    0 - Internal
 122 *    1 - External 1
 123 *    2 - External 2
 124 */
 125static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
 126static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
 127static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
 128static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
 129static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
 130static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
 131
 132#define ADM1026_REG_FAN(nr)		(0x38 + (nr))
 133#define ADM1026_REG_FAN_MIN(nr)		(0x60 + (nr))
 134#define ADM1026_REG_FAN_DIV_0_3		0x02
 135#define ADM1026_REG_FAN_DIV_4_7		0x03
 136
 137#define ADM1026_REG_DAC			0x04
 138#define ADM1026_REG_PWM			0x05
 139
 140#define ADM1026_REG_GPIO_CFG_0_3	0x08
 141#define ADM1026_REG_GPIO_CFG_4_7	0x09
 142#define ADM1026_REG_GPIO_CFG_8_11	0x0a
 143#define ADM1026_REG_GPIO_CFG_12_15	0x0b
 144/* CFG_16 in REG_CFG3 */
 145#define ADM1026_REG_GPIO_STATUS_0_7	0x24
 146#define ADM1026_REG_GPIO_STATUS_8_15	0x25
 147/* STATUS_16 in REG_STATUS4 */
 148#define ADM1026_REG_GPIO_MASK_0_7	0x1c
 149#define ADM1026_REG_GPIO_MASK_8_15	0x1d
 150/* MASK_16 in REG_MASK4 */
 151
 152#define ADM1026_REG_COMPANY		0x16
 153#define ADM1026_REG_VERSTEP		0x17
 154/* These are the recognized values for the above regs */
 155#define ADM1026_COMPANY_ANALOG_DEV	0x41
 156#define ADM1026_VERSTEP_GENERIC		0x40
 157#define ADM1026_VERSTEP_ADM1026		0x44
 158
 159#define ADM1026_REG_MASK1		0x18
 160#define ADM1026_REG_MASK2		0x19
 161#define ADM1026_REG_MASK3		0x1a
 162#define ADM1026_REG_MASK4		0x1b
 163
 164#define ADM1026_REG_STATUS1		0x20
 165#define ADM1026_REG_STATUS2		0x21
 166#define ADM1026_REG_STATUS3		0x22
 167#define ADM1026_REG_STATUS4		0x23
 168
 169#define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
 170#define ADM1026_FAN_CONTROL_TEMP_RANGE	20
 171#define ADM1026_PWM_MAX			255
 172
 173/* Conversions. Rounding and limit checking is only done on the TO_REG
 
 174 * variants. Note that you should be a bit careful with which arguments
 175 * these macros are called: arguments may be evaluated more than once.
 176 */
 177
 178/* IN are scaled according to built-in resistors.  These are the
 
 179 *   voltages corresponding to 3/4 of full scale (192 or 0xc0)
 180 *   NOTE: The -12V input needs an additional factor to account
 181 *      for the Vref pullup resistor.
 182 *      NEG12_OFFSET = SCALE * Vref / V-192 - Vref
 183 *                   = 13875 * 2.50 / 1.875 - 2500
 184 *                   = 16000
 185 *
 186 * The values in this table are based on Table II, page 15 of the
 187 *    datasheet.
 188 */
 189static int adm1026_scaling[] = { /* .001 Volts */
 190		2250, 2250, 2250, 2250, 2250, 2250,
 191		1875, 1875, 1875, 1875, 3000, 3330,
 192		3330, 4995, 2250, 12000, 13875
 193	};
 194#define NEG12_OFFSET  16000
 195#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
 196#define INS_TO_REG(n, val)  (SENSORS_LIMIT(SCALE(val, adm1026_scaling[n], 192),\
 197	0, 255))
 
 198#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
 199
 200/* FAN speed is measured using 22.5kHz clock and counts for 2 pulses
 
 201 *   and we assume a 2 pulse-per-rev fan tach signal
 202 *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
 203 */
 204#define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
 205				SENSORS_LIMIT(1350000/((val)*(div)), 1, 254))
 206#define FAN_FROM_REG(val, div) ((val) == 0 ? -1:(val) == 0xff ? 0 : \
 207				1350000/((val)*(div)))
 208#define DIV_FROM_REG(val) (1<<(val))
 
 209#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
 210
 211/* Temperature is reported in 1 degC increments */
 212#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)+((val)<0 ? -500 : 500))/1000,\
 213	-127, 127))
 214#define TEMP_FROM_REG(val) ((val) * 1000)
 215#define OFFSET_TO_REG(val) (SENSORS_LIMIT(((val)+((val)<0 ? -500 : 500))/1000,\
 216	-127, 127))
 217#define OFFSET_FROM_REG(val) ((val) * 1000)
 218
 219#define PWM_TO_REG(val) (SENSORS_LIMIT(val, 0, 255))
 220#define PWM_FROM_REG(val) (val)
 221
 222#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
 223#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
 224
 225/* Analog output is a voltage, and scaled to millivolts.  The datasheet
 
 226 *   indicates that the DAC could be used to drive the fans, but in our
 227 *   example board (Arima HDAMA) it isn't connected to the fans at all.
 228 */
 229#define DAC_TO_REG(val) (SENSORS_LIMIT(((((val)*255)+500)/2500), 0, 255))
 230#define DAC_FROM_REG(val) (((val)*2500)/255)
 
 231
 232/* Chip sampling rates
 
 233 *
 234 * Some sensors are not updated more frequently than once per second
 235 *    so it doesn't make sense to read them more often than that.
 236 *    We cache the results and return the saved data if the driver
 237 *    is called again before a second has elapsed.
 238 *
 239 * Also, there is significant configuration data for this chip
 240 *    So, we keep the config data up to date in the cache
 241 *    when it is written and only sample it once every 5 *minutes*
 242 */
 243#define ADM1026_DATA_INTERVAL		(1 * HZ)
 244#define ADM1026_CONFIG_INTERVAL		(5 * 60 * HZ)
 245
 246/* We allow for multiple chips in a single system.
 
 247 *
 248 * For each registered ADM1026, we need to keep state information
 249 * at client->data. The adm1026_data structure is dynamically
 250 * allocated, when a new client structure is allocated. */
 
 251
 252struct pwm_data {
 253	u8 pwm;
 254	u8 enable;
 255	u8 auto_pwm_min;
 256};
 257
 258struct adm1026_data {
 259	struct device *hwmon_dev;
 
 260
 261	struct mutex update_lock;
 262	int valid;		/* !=0 if following fields are valid */
 263	unsigned long last_reading;	/* In jiffies */
 264	unsigned long last_config;	/* In jiffies */
 265
 266	u8 in[17];		/* Register value */
 267	u8 in_max[17];		/* Register value */
 268	u8 in_min[17];		/* Register value */
 269	s8 temp[3];		/* Register value */
 270	s8 temp_min[3];		/* Register value */
 271	s8 temp_max[3];		/* Register value */
 272	s8 temp_tmin[3];	/* Register value */
 273	s8 temp_crit[3];	/* Register value */
 274	s8 temp_offset[3];	/* Register value */
 275	u8 fan[8];		/* Register value */
 276	u8 fan_min[8];		/* Register value */
 277	u8 fan_div[8];		/* Decoded value */
 278	struct pwm_data pwm1;	/* Pwm control values */
 279	u8 vrm;			/* VRM version */
 280	u8 analog_out;		/* Register value (DAC) */
 281	long alarms;		/* Register encoding, combined */
 282	long alarm_mask;	/* Register encoding, combined */
 283	long gpio;		/* Register encoding, combined */
 284	long gpio_mask;		/* Register encoding, combined */
 285	u8 gpio_config[17];	/* Decoded value */
 286	u8 config1;		/* Register value */
 287	u8 config2;		/* Register value */
 288	u8 config3;		/* Register value */
 289};
 290
 291static int adm1026_probe(struct i2c_client *client,
 292			 const struct i2c_device_id *id);
 293static int adm1026_detect(struct i2c_client *client,
 294			  struct i2c_board_info *info);
 295static int adm1026_remove(struct i2c_client *client);
 296static int adm1026_read_value(struct i2c_client *client, u8 reg);
 297static int adm1026_write_value(struct i2c_client *client, u8 reg, int value);
 298static void adm1026_print_gpio(struct i2c_client *client);
 299static void adm1026_fixup_gpio(struct i2c_client *client);
 300static struct adm1026_data *adm1026_update_device(struct device *dev);
 301static void adm1026_init_client(struct i2c_client *client);
 302
 303
 304static const struct i2c_device_id adm1026_id[] = {
 305	{ "adm1026", 0 },
 306	{ }
 307};
 308MODULE_DEVICE_TABLE(i2c, adm1026_id);
 309
 310static struct i2c_driver adm1026_driver = {
 311	.class		= I2C_CLASS_HWMON,
 312	.driver = {
 313		.name	= "adm1026",
 314	},
 315	.probe		= adm1026_probe,
 316	.remove		= adm1026_remove,
 317	.id_table	= adm1026_id,
 318	.detect		= adm1026_detect,
 319	.address_list	= normal_i2c,
 320};
 321
 322static int adm1026_read_value(struct i2c_client *client, u8 reg)
 323{
 324	int res;
 325
 326	if (reg < 0x80) {
 327		/* "RAM" locations */
 328		res = i2c_smbus_read_byte_data(client, reg) & 0xff;
 329	} else {
 330		/* EEPROM, do nothing */
 331		res = 0;
 332	}
 333	return res;
 334}
 335
 336static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 337{
 338	int res;
 339
 340	if (reg < 0x80) {
 341		/* "RAM" locations */
 342		res = i2c_smbus_write_byte_data(client, reg, value);
 343	} else {
 344		/* EEPROM, do nothing */
 345		res = 0;
 346	}
 347	return res;
 348}
 349
 350static void adm1026_init_client(struct i2c_client *client)
 351{
 352	int value, i;
 353	struct adm1026_data *data = i2c_get_clientdata(client);
 354
 355	dev_dbg(&client->dev, "Initializing device\n");
 356	/* Read chip config */
 357	data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
 358	data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
 359	data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
 360
 361	/* Inform user of chip config */
 362	dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
 363		data->config1);
 364	if ((data->config1 & CFG1_MONITOR) == 0) {
 365		dev_dbg(&client->dev, "Monitoring not currently "
 366			"enabled.\n");
 367	}
 368	if (data->config1 & CFG1_INT_ENABLE) {
 369		dev_dbg(&client->dev, "SMBALERT interrupts are "
 370			"enabled.\n");
 371	}
 372	if (data->config1 & CFG1_AIN8_9) {
 373		dev_dbg(&client->dev, "in8 and in9 enabled. "
 374			"temp3 disabled.\n");
 375	} else {
 376		dev_dbg(&client->dev, "temp3 enabled.  in8 and "
 377			"in9 disabled.\n");
 378	}
 379	if (data->config1 & CFG1_THERM_HOT) {
 380		dev_dbg(&client->dev, "Automatic THERM, PWM, "
 381			"and temp limits enabled.\n");
 382	}
 383
 384	if (data->config3 & CFG3_GPIO16_ENABLE) {
 385		dev_dbg(&client->dev, "GPIO16 enabled.  THERM "
 386			"pin disabled.\n");
 387	} else {
 388		dev_dbg(&client->dev, "THERM pin enabled.  "
 389			"GPIO16 disabled.\n");
 390	}
 391	if (data->config3 & CFG3_VREF_250) {
 392		dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
 393	} else {
 394		dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
 395	}
 396	/* Read and pick apart the existing GPIO configuration */
 397	value = 0;
 398	for (i = 0;i <= 15;++i) {
 399		if ((i & 0x03) == 0) {
 400			value = adm1026_read_value(client,
 401					ADM1026_REG_GPIO_CFG_0_3 + i/4);
 402		}
 403		data->gpio_config[i] = value & 0x03;
 404		value >>= 2;
 405	}
 406	data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 407
 408	/* ... and then print it */
 409	adm1026_print_gpio(client);
 410
 411	/* If the user asks us to reprogram the GPIO config, then
 412	 * do it now.
 413	 */
 414	if (gpio_input[0] != -1 || gpio_output[0] != -1
 415		|| gpio_inverted[0] != -1 || gpio_normal[0] != -1
 416		|| gpio_fan[0] != -1) {
 417		adm1026_fixup_gpio(client);
 418	}
 419
 420	/* WE INTENTIONALLY make no changes to the limits,
 421	 *   offsets, pwms, fans and zones.  If they were
 422	 *   configured, we don't want to mess with them.
 423	 *   If they weren't, the default is 100% PWM, no
 424	 *   control and will suffice until 'sensors -s'
 425	 *   can be run by the user.  We DO set the default
 426	 *   value for pwm1.auto_pwm_min to its maximum
 427	 *   so that enabling automatic pwm fan control
 428	 *   without first setting a value for pwm1.auto_pwm_min
 429	 *   will not result in potentially dangerous fan speed decrease.
 430	 */
 431	data->pwm1.auto_pwm_min=255;
 432	/* Start monitoring */
 433	value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
 434	/* Set MONITOR, clear interrupt acknowledge and s/w reset */
 435	value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
 436	dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
 437	data->config1 = value;
 438	adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
 439
 440	/* initialize fan_div[] to hardware defaults */
 441	value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
 442		(adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
 443	for (i = 0;i <= 7;++i) {
 444		data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 445		value >>= 2;
 446	}
 447}
 448
 449static void adm1026_print_gpio(struct i2c_client *client)
 450{
 451	struct adm1026_data *data = i2c_get_clientdata(client);
 452	int i;
 453
 454	dev_dbg(&client->dev, "GPIO config is:\n");
 455	for (i = 0;i <= 7;++i) {
 456		if (data->config2 & (1 << i)) {
 457			dev_dbg(&client->dev, "\t%sGP%s%d\n",
 458				data->gpio_config[i] & 0x02 ? "" : "!",
 459				data->gpio_config[i] & 0x01 ? "OUT" : "IN",
 460				i);
 461		} else {
 462			dev_dbg(&client->dev, "\tFAN%d\n", i);
 463		}
 464	}
 465	for (i = 8;i <= 15;++i) {
 466		dev_dbg(&client->dev, "\t%sGP%s%d\n",
 467			data->gpio_config[i] & 0x02 ? "" : "!",
 468			data->gpio_config[i] & 0x01 ? "OUT" : "IN",
 469			i);
 470	}
 471	if (data->config3 & CFG3_GPIO16_ENABLE) {
 472		dev_dbg(&client->dev, "\t%sGP%s16\n",
 473			data->gpio_config[16] & 0x02 ? "" : "!",
 474			data->gpio_config[16] & 0x01 ? "OUT" : "IN");
 475	} else {
 476		/* GPIO16 is THERM */
 477		dev_dbg(&client->dev, "\tTHERM\n");
 478	}
 479}
 480
 481static void adm1026_fixup_gpio(struct i2c_client *client)
 482{
 483	struct adm1026_data *data = i2c_get_clientdata(client);
 484	int i;
 485	int value;
 486
 487	/* Make the changes requested. */
 488	/* We may need to unlock/stop monitoring or soft-reset the
 489	 *    chip before we can make changes.  This hasn't been
 490	 *    tested much.  FIXME
 491	 */
 492
 493	/* Make outputs */
 494	for (i = 0;i <= 16;++i) {
 495		if (gpio_output[i] >= 0 && gpio_output[i] <= 16) {
 496			data->gpio_config[gpio_output[i]] |= 0x01;
 497		}
 498		/* if GPIO0-7 is output, it isn't a FAN tach */
 499		if (gpio_output[i] >= 0 && gpio_output[i] <= 7) {
 500			data->config2 |= 1 << gpio_output[i];
 501		}
 502	}
 503
 504	/* Input overrides output */
 505	for (i = 0;i <= 16;++i) {
 506		if (gpio_input[i] >= 0 && gpio_input[i] <= 16) {
 507			data->gpio_config[gpio_input[i]] &= ~ 0x01;
 508		}
 509		/* if GPIO0-7 is input, it isn't a FAN tach */
 510		if (gpio_input[i] >= 0 && gpio_input[i] <= 7) {
 511			data->config2 |= 1 << gpio_input[i];
 512		}
 513	}
 514
 515	/* Inverted */
 516	for (i = 0;i <= 16;++i) {
 517		if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16) {
 518			data->gpio_config[gpio_inverted[i]] &= ~ 0x02;
 519		}
 520	}
 521
 522	/* Normal overrides inverted */
 523	for (i = 0;i <= 16;++i) {
 524		if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16) {
 525			data->gpio_config[gpio_normal[i]] |= 0x02;
 526		}
 527	}
 528
 529	/* Fan overrides input and output */
 530	for (i = 0;i <= 7;++i) {
 531		if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7) {
 532			data->config2 &= ~(1 << gpio_fan[i]);
 533		}
 534	}
 535
 536	/* Write new configs to registers */
 537	adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
 538	data->config3 = (data->config3 & 0x3f)
 539			| ((data->gpio_config[16] & 0x03) << 6);
 540	adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
 541	for (i = 15, value = 0;i >= 0;--i) {
 542		value <<= 2;
 543		value |= data->gpio_config[i] & 0x03;
 544		if ((i & 0x03) == 0) {
 545			adm1026_write_value(client,
 546					ADM1026_REG_GPIO_CFG_0_3 + i/4,
 547					value);
 548			value = 0;
 549		}
 550	}
 551
 552	/* Print the new config */
 553	adm1026_print_gpio(client);
 554}
 555
 556
 557static struct adm1026_data *adm1026_update_device(struct device *dev)
 558{
 559	struct i2c_client *client = to_i2c_client(dev);
 560	struct adm1026_data *data = i2c_get_clientdata(client);
 561	int i;
 562	long value, alarms, gpio;
 563
 564	mutex_lock(&data->update_lock);
 565	if (!data->valid
 566	    || time_after(jiffies, data->last_reading + ADM1026_DATA_INTERVAL)) {
 
 567		/* Things that change quickly */
 568		dev_dbg(&client->dev, "Reading sensor values\n");
 569		for (i = 0;i <= 16;++i) {
 570			data->in[i] =
 571			    adm1026_read_value(client, ADM1026_REG_IN[i]);
 572		}
 573
 574		for (i = 0;i <= 7;++i) {
 575			data->fan[i] =
 576			    adm1026_read_value(client, ADM1026_REG_FAN(i));
 577		}
 578
 579		for (i = 0;i <= 2;++i) {
 580			/* NOTE: temp[] is s8 and we assume 2's complement
 581			 *   "conversion" in the assignment */
 
 
 582			data->temp[i] =
 583			    adm1026_read_value(client, ADM1026_REG_TEMP[i]);
 584		}
 585
 586		data->pwm1.pwm = adm1026_read_value(client,
 587			ADM1026_REG_PWM);
 588		data->analog_out = adm1026_read_value(client,
 589			ADM1026_REG_DAC);
 590		/* GPIO16 is MSbit of alarms, move it to gpio */
 591		alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
 592		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 593		alarms &= 0x7f;
 594		alarms <<= 8;
 595		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
 596		alarms <<= 8;
 597		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
 598		alarms <<= 8;
 599		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
 600		data->alarms = alarms;
 601
 602		/* Read the GPIO values */
 603		gpio |= adm1026_read_value(client,
 604			ADM1026_REG_GPIO_STATUS_8_15);
 605		gpio <<= 8;
 606		gpio |= adm1026_read_value(client,
 607			ADM1026_REG_GPIO_STATUS_0_7);
 608		data->gpio = gpio;
 609
 610		data->last_reading = jiffies;
 611	}; /* last_reading */
 612
 613	if (!data->valid ||
 614	    time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
 615		/* Things that don't change often */
 616		dev_dbg(&client->dev, "Reading config values\n");
 617		for (i = 0;i <= 16;++i) {
 618			data->in_min[i] = adm1026_read_value(client,
 619				ADM1026_REG_IN_MIN[i]);
 620			data->in_max[i] = adm1026_read_value(client,
 621				ADM1026_REG_IN_MAX[i]);
 622		}
 623
 624		value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
 625			| (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
 626			<< 8);
 627		for (i = 0;i <= 7;++i) {
 628			data->fan_min[i] = adm1026_read_value(client,
 629				ADM1026_REG_FAN_MIN(i));
 630			data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 631			value >>= 2;
 632		}
 633
 634		for (i = 0; i <= 2; ++i) {
 635			/* NOTE: temp_xxx[] are s8 and we assume 2's
 
 636			 *    complement "conversion" in the assignment
 637			 */
 638			data->temp_min[i] = adm1026_read_value(client,
 639				ADM1026_REG_TEMP_MIN[i]);
 640			data->temp_max[i] = adm1026_read_value(client,
 641				ADM1026_REG_TEMP_MAX[i]);
 642			data->temp_tmin[i] = adm1026_read_value(client,
 643				ADM1026_REG_TEMP_TMIN[i]);
 644			data->temp_crit[i] = adm1026_read_value(client,
 645				ADM1026_REG_TEMP_THERM[i]);
 646			data->temp_offset[i] = adm1026_read_value(client,
 647				ADM1026_REG_TEMP_OFFSET[i]);
 648		}
 649
 650		/* Read the STATUS/alarm masks */
 651		alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
 652		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 653		alarms = (alarms & 0x7f) << 8;
 654		alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
 655		alarms <<= 8;
 656		alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
 657		alarms <<= 8;
 658		alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
 659		data->alarm_mask = alarms;
 660
 661		/* Read the GPIO values */
 662		gpio |= adm1026_read_value(client,
 663			ADM1026_REG_GPIO_MASK_8_15);
 664		gpio <<= 8;
 665		gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
 666		data->gpio_mask = gpio;
 667
 668		/* Read various values from CONFIG1 */
 669		data->config1 = adm1026_read_value(client,
 670			ADM1026_REG_CONFIG1);
 671		if (data->config1 & CFG1_PWM_AFC) {
 672			data->pwm1.enable = 2;
 673			data->pwm1.auto_pwm_min =
 674				PWM_MIN_FROM_REG(data->pwm1.pwm);
 675		}
 676		/* Read the GPIO config */
 677		data->config2 = adm1026_read_value(client,
 678			ADM1026_REG_CONFIG2);
 679		data->config3 = adm1026_read_value(client,
 680			ADM1026_REG_CONFIG3);
 681		data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 682
 683		value = 0;
 684		for (i = 0;i <= 15;++i) {
 685			if ((i & 0x03) == 0) {
 686				value = adm1026_read_value(client,
 687					    ADM1026_REG_GPIO_CFG_0_3 + i/4);
 688			}
 689			data->gpio_config[i] = value & 0x03;
 690			value >>= 2;
 691		}
 692
 693		data->last_config = jiffies;
 694	}; /* last_config */
 695
 696	data->valid = 1;
 697	mutex_unlock(&data->update_lock);
 698	return data;
 699}
 700
 701static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 702		char *buf)
 703{
 704	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 705	int nr = sensor_attr->index;
 706	struct adm1026_data *data = adm1026_update_device(dev);
 707	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
 708}
 709static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
 710		char *buf)
 711{
 712	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 713	int nr = sensor_attr->index;
 714	struct adm1026_data *data = adm1026_update_device(dev);
 715	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
 716}
 717static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 718		const char *buf, size_t count)
 719{
 720	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 721	int nr = sensor_attr->index;
 722	struct i2c_client *client = to_i2c_client(dev);
 723	struct adm1026_data *data = i2c_get_clientdata(client);
 724	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 725
 726	mutex_lock(&data->update_lock);
 727	data->in_min[nr] = INS_TO_REG(nr, val);
 728	adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
 729	mutex_unlock(&data->update_lock);
 730	return count;
 731}
 732static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 733		char *buf)
 734{
 735	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 736	int nr = sensor_attr->index;
 737	struct adm1026_data *data = adm1026_update_device(dev);
 738	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
 739}
 740static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 741		const char *buf, size_t count)
 742{
 743	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 744	int nr = sensor_attr->index;
 745	struct i2c_client *client = to_i2c_client(dev);
 746	struct adm1026_data *data = i2c_get_clientdata(client);
 747	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 748
 749	mutex_lock(&data->update_lock);
 750	data->in_max[nr] = INS_TO_REG(nr, val);
 751	adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
 752	mutex_unlock(&data->update_lock);
 753	return count;
 754}
 755
 756#define in_reg(offset)						\
 757static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in,	\
 758		NULL, offset);					\
 759static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,	\
 760		show_in_min, set_in_min, offset);		\
 761static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,	\
 762		show_in_max, set_in_max, offset);
 763
 764
 765in_reg(0);
 766in_reg(1);
 767in_reg(2);
 768in_reg(3);
 769in_reg(4);
 770in_reg(5);
 771in_reg(6);
 772in_reg(7);
 773in_reg(8);
 774in_reg(9);
 775in_reg(10);
 776in_reg(11);
 777in_reg(12);
 778in_reg(13);
 779in_reg(14);
 780in_reg(15);
 781
 782static ssize_t show_in16(struct device *dev, struct device_attribute *attr, char *buf)
 
 783{
 784	struct adm1026_data *data = adm1026_update_device(dev);
 785	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
 786		NEG12_OFFSET);
 787}
 788static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr, char *buf)
 
 789{
 790	struct adm1026_data *data = adm1026_update_device(dev);
 791	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
 792		- NEG12_OFFSET);
 793}
 794static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 
 795{
 796	struct i2c_client *client = to_i2c_client(dev);
 797	struct adm1026_data *data = i2c_get_clientdata(client);
 798	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 799
 800	mutex_lock(&data->update_lock);
 801	data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET);
 
 
 
 802	adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
 803	mutex_unlock(&data->update_lock);
 804	return count;
 805}
 806static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr, char *buf)
 
 807{
 808	struct adm1026_data *data = adm1026_update_device(dev);
 809	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
 810			- NEG12_OFFSET);
 811}
 812static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 
 813{
 814	struct i2c_client *client = to_i2c_client(dev);
 815	struct adm1026_data *data = i2c_get_clientdata(client);
 816	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 817
 818	mutex_lock(&data->update_lock);
 819	data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET);
 
 
 
 820	adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
 821	mutex_unlock(&data->update_lock);
 822	return count;
 823}
 824
 825static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
 826static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min, set_in16_min, 16);
 827static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max, set_in16_max, 16);
 828
 829
 830
 831
 832/* Now add fan read/write functions */
 833
 834static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 835		char *buf)
 836{
 837	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 838	int nr = sensor_attr->index;
 839	struct adm1026_data *data = adm1026_update_device(dev);
 840	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
 841		data->fan_div[nr]));
 842}
 843static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
 844		char *buf)
 845{
 846	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 847	int nr = sensor_attr->index;
 848	struct adm1026_data *data = adm1026_update_device(dev);
 849	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
 850		data->fan_div[nr]));
 851}
 852static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 853		const char *buf, size_t count)
 854{
 855	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 856	int nr = sensor_attr->index;
 857	struct i2c_client *client = to_i2c_client(dev);
 858	struct adm1026_data *data = i2c_get_clientdata(client);
 859	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 860
 861	mutex_lock(&data->update_lock);
 862	data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
 863	adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
 864		data->fan_min[nr]);
 865	mutex_unlock(&data->update_lock);
 866	return count;
 867}
 868
 869#define fan_offset(offset)						\
 870static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL,	\
 871		offset - 1);						\
 872static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,		\
 873		show_fan_min, set_fan_min, offset - 1);
 874
 875fan_offset(1);
 876fan_offset(2);
 877fan_offset(3);
 878fan_offset(4);
 879fan_offset(5);
 880fan_offset(6);
 881fan_offset(7);
 882fan_offset(8);
 883
 884/* Adjust fan_min to account for new fan divisor */
 885static void fixup_fan_min(struct device *dev, int fan, int old_div)
 886{
 887	struct i2c_client *client = to_i2c_client(dev);
 888	struct adm1026_data *data = i2c_get_clientdata(client);
 889	int new_min;
 890	int new_div = data->fan_div[fan];
 891
 892	/* 0 and 0xff are special.  Don't adjust them */
 893	if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff) {
 894		return;
 895	}
 896
 897	new_min = data->fan_min[fan] * old_div / new_div;
 898	new_min = SENSORS_LIMIT(new_min, 1, 254);
 899	data->fan_min[fan] = new_min;
 900	adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
 901}
 902
 903/* Now add fan_div read/write functions */
 904static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 905		char *buf)
 906{
 907	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 908	int nr = sensor_attr->index;
 909	struct adm1026_data *data = adm1026_update_device(dev);
 910	return sprintf(buf, "%d\n", data->fan_div[nr]);
 911}
 912static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 913		const char *buf, size_t count)
 914{
 915	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 916	int nr = sensor_attr->index;
 917	struct i2c_client *client = to_i2c_client(dev);
 918	struct adm1026_data *data = i2c_get_clientdata(client);
 919	int val, orig_div, new_div;
 
 
 
 
 
 
 920
 921	val = simple_strtol(buf, NULL, 10);
 922	new_div = DIV_TO_REG(val);
 923
 924	mutex_lock(&data->update_lock);
 925	orig_div = data->fan_div[nr];
 926	data->fan_div[nr] = DIV_FROM_REG(new_div);
 927
 928	if (nr < 4) { /* 0 <= nr < 4 */
 929		adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
 930				    (DIV_TO_REG(data->fan_div[0]) << 0) |
 931				    (DIV_TO_REG(data->fan_div[1]) << 2) |
 932				    (DIV_TO_REG(data->fan_div[2]) << 4) |
 933				    (DIV_TO_REG(data->fan_div[3]) << 6));
 934	} else { /* 3 < nr < 8 */
 935		adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
 936				    (DIV_TO_REG(data->fan_div[4]) << 0) |
 937				    (DIV_TO_REG(data->fan_div[5]) << 2) |
 938				    (DIV_TO_REG(data->fan_div[6]) << 4) |
 939				    (DIV_TO_REG(data->fan_div[7]) << 6));
 940	}
 941
 942	if (data->fan_div[nr] != orig_div) {
 943		fixup_fan_min(dev, nr, orig_div);
 944	}
 945	mutex_unlock(&data->update_lock);
 946	return count;
 947}
 948
 949#define fan_offset_div(offset)						\
 950static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR,		\
 951		show_fan_div, set_fan_div, offset - 1);
 952
 953fan_offset_div(1);
 954fan_offset_div(2);
 955fan_offset_div(3);
 956fan_offset_div(4);
 957fan_offset_div(5);
 958fan_offset_div(6);
 959fan_offset_div(7);
 960fan_offset_div(8);
 961
 962/* Temps */
 963static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 964		char *buf)
 965{
 966	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 967	int nr = sensor_attr->index;
 968	struct adm1026_data *data = adm1026_update_device(dev);
 969	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 970}
 971static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
 972		char *buf)
 973{
 974	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 975	int nr = sensor_attr->index;
 976	struct adm1026_data *data = adm1026_update_device(dev);
 977	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
 978}
 979static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
 980		const char *buf, size_t count)
 981{
 982	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 983	int nr = sensor_attr->index;
 984	struct i2c_client *client = to_i2c_client(dev);
 985	struct adm1026_data *data = i2c_get_clientdata(client);
 986	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 987
 988	mutex_lock(&data->update_lock);
 989	data->temp_min[nr] = TEMP_TO_REG(val);
 990	adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
 991		data->temp_min[nr]);
 992	mutex_unlock(&data->update_lock);
 993	return count;
 994}
 995static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
 996		char *buf)
 997{
 998	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 999	int nr = sensor_attr->index;
1000	struct adm1026_data *data = adm1026_update_device(dev);
1001	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
1002}
1003static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
1004		const char *buf, size_t count)
1005{
1006	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1007	int nr = sensor_attr->index;
1008	struct i2c_client *client = to_i2c_client(dev);
1009	struct adm1026_data *data = i2c_get_clientdata(client);
1010	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1011
1012	mutex_lock(&data->update_lock);
1013	data->temp_max[nr] = TEMP_TO_REG(val);
1014	adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
1015		data->temp_max[nr]);
1016	mutex_unlock(&data->update_lock);
1017	return count;
1018}
1019
1020#define temp_reg(offset)						\
1021static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,	\
1022		NULL, offset - 1);					\
1023static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,	\
1024		show_temp_min, set_temp_min, offset - 1);		\
1025static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,	\
1026		show_temp_max, set_temp_max, offset - 1);
1027
1028
1029temp_reg(1);
1030temp_reg(2);
1031temp_reg(3);
1032
1033static ssize_t show_temp_offset(struct device *dev,
1034		struct device_attribute *attr, char *buf)
1035{
1036	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1037	int nr = sensor_attr->index;
1038	struct adm1026_data *data = adm1026_update_device(dev);
1039	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
1040}
1041static ssize_t set_temp_offset(struct device *dev,
1042		struct device_attribute *attr, const char *buf,
1043		size_t count)
1044{
1045	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1046	int nr = sensor_attr->index;
1047	struct i2c_client *client = to_i2c_client(dev);
1048	struct adm1026_data *data = i2c_get_clientdata(client);
1049	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1050
1051	mutex_lock(&data->update_lock);
1052	data->temp_offset[nr] = TEMP_TO_REG(val);
1053	adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
1054		data->temp_offset[nr]);
1055	mutex_unlock(&data->update_lock);
1056	return count;
1057}
1058
1059#define temp_offset_reg(offset)							\
1060static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR,		\
1061		show_temp_offset, set_temp_offset, offset - 1);
1062
1063temp_offset_reg(1);
1064temp_offset_reg(2);
1065temp_offset_reg(3);
1066
1067static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
1068		struct device_attribute *attr, char *buf)
1069{
1070	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1071	int nr = sensor_attr->index;
1072	struct adm1026_data *data = adm1026_update_device(dev);
1073	return sprintf(buf, "%d\n", TEMP_FROM_REG(
1074		ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
1075}
1076static ssize_t show_temp_auto_point2_temp(struct device *dev,
1077		struct device_attribute *attr, char *buf)
1078{
1079	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1080	int nr = sensor_attr->index;
1081	struct adm1026_data *data = adm1026_update_device(dev);
1082	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
1083		ADM1026_FAN_CONTROL_TEMP_RANGE));
1084}
1085static ssize_t show_temp_auto_point1_temp(struct device *dev,
1086		struct device_attribute *attr, char *buf)
1087{
1088	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1089	int nr = sensor_attr->index;
1090	struct adm1026_data *data = adm1026_update_device(dev);
1091	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
1092}
1093static ssize_t set_temp_auto_point1_temp(struct device *dev,
1094		struct device_attribute *attr, const char *buf, size_t count)
1095{
1096	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1097	int nr = sensor_attr->index;
1098	struct i2c_client *client = to_i2c_client(dev);
1099	struct adm1026_data *data = i2c_get_clientdata(client);
1100	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1101
1102	mutex_lock(&data->update_lock);
1103	data->temp_tmin[nr] = TEMP_TO_REG(val);
1104	adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
1105		data->temp_tmin[nr]);
1106	mutex_unlock(&data->update_lock);
1107	return count;
1108}
1109
1110#define temp_auto_point(offset)						\
1111static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp,		\
1112		S_IRUGO | S_IWUSR, show_temp_auto_point1_temp,		\
1113		set_temp_auto_point1_temp, offset - 1);			\
1114static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
1115		show_temp_auto_point1_temp_hyst, NULL, offset - 1);	\
1116static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO,	\
1117		show_temp_auto_point2_temp, NULL, offset - 1);
1118
1119temp_auto_point(1);
1120temp_auto_point(2);
1121temp_auto_point(3);
1122
1123static ssize_t show_temp_crit_enable(struct device *dev,
1124		struct device_attribute *attr, char *buf)
1125{
1126	struct adm1026_data *data = adm1026_update_device(dev);
1127	return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
1128}
1129static ssize_t set_temp_crit_enable(struct device *dev,
1130		struct device_attribute *attr, const char *buf, size_t count)
1131{
1132	struct i2c_client *client = to_i2c_client(dev);
1133	struct adm1026_data *data = i2c_get_clientdata(client);
1134	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
 
 
 
 
 
 
 
 
1135
1136	if ((val == 1) || (val==0)) {
1137		mutex_lock(&data->update_lock);
1138		data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
1139		adm1026_write_value(client, ADM1026_REG_CONFIG1,
1140			data->config1);
1141		mutex_unlock(&data->update_lock);
1142	}
1143	return count;
1144}
1145
1146#define temp_crit_enable(offset)				\
1147static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
1148	show_temp_crit_enable, set_temp_crit_enable);
1149
1150temp_crit_enable(1);
1151temp_crit_enable(2);
1152temp_crit_enable(3);
1153
1154static ssize_t show_temp_crit(struct device *dev,
1155		struct device_attribute *attr, char *buf)
1156{
1157	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1158	int nr = sensor_attr->index;
1159	struct adm1026_data *data = adm1026_update_device(dev);
1160	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
1161}
1162static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
1163		const char *buf, size_t count)
1164{
1165	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1166	int nr = sensor_attr->index;
1167	struct i2c_client *client = to_i2c_client(dev);
1168	struct adm1026_data *data = i2c_get_clientdata(client);
1169	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1170
1171	mutex_lock(&data->update_lock);
1172	data->temp_crit[nr] = TEMP_TO_REG(val);
1173	adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1174		data->temp_crit[nr]);
1175	mutex_unlock(&data->update_lock);
1176	return count;
1177}
1178
1179#define temp_crit_reg(offset)						\
1180static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR,	\
1181		show_temp_crit, set_temp_crit, offset - 1);
1182
1183temp_crit_reg(1);
1184temp_crit_reg(2);
1185temp_crit_reg(3);
1186
1187static ssize_t show_analog_out_reg(struct device *dev, struct device_attribute *attr, char *buf)
 
1188{
1189	struct adm1026_data *data = adm1026_update_device(dev);
1190	return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1191}
1192static ssize_t set_analog_out_reg(struct device *dev, struct device_attribute *attr, const char *buf,
1193		size_t count)
 
1194{
1195	struct i2c_client *client = to_i2c_client(dev);
1196	struct adm1026_data *data = i2c_get_clientdata(client);
1197	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1198
1199	mutex_lock(&data->update_lock);
1200	data->analog_out = DAC_TO_REG(val);
1201	adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1202	mutex_unlock(&data->update_lock);
1203	return count;
1204}
1205
1206static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
1207	set_analog_out_reg);
1208
1209static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
 
1210{
1211	struct adm1026_data *data = adm1026_update_device(dev);
1212	int vid = (data->gpio >> 11) & 0x1f;
1213
1214	dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1215	return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1216}
 
1217static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1218
1219static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
 
1220{
1221	struct adm1026_data *data = dev_get_drvdata(dev);
1222	return sprintf(buf, "%d\n", data->vrm);
1223}
1224static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf,
1225		size_t count)
 
1226{
1227	struct adm1026_data *data = dev_get_drvdata(dev);
 
 
 
 
 
 
 
 
 
1228
1229	data->vrm = simple_strtol(buf, NULL, 10);
1230	return count;
1231}
1232
1233static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1234
1235static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 
1236{
1237	struct adm1026_data *data = adm1026_update_device(dev);
1238	return sprintf(buf, "%ld\n", data->alarms);
1239}
1240
1241static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1242
1243static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1244			  char *buf)
1245{
1246	struct adm1026_data *data = adm1026_update_device(dev);
1247	int bitnr = to_sensor_dev_attr(attr)->index;
1248	return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1249}
1250
1251static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
1252static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
1253static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
1254static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
1255static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
1256static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
1257static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
1258static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
1259static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
1260static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1261static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1262static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1263static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1264static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1265static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1266static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1267static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1268static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
1269static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
1270static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
1271static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
1272static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
1273static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
1274static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
1275static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
1276static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
1277static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
1278static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);
1279
1280static ssize_t show_alarm_mask(struct device *dev, struct device_attribute *attr, char *buf)
 
1281{
1282	struct adm1026_data *data = adm1026_update_device(dev);
1283	return sprintf(buf, "%ld\n", data->alarm_mask);
1284}
1285static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr, const char *buf,
1286		size_t count)
1287{
1288	struct i2c_client *client = to_i2c_client(dev);
1289	struct adm1026_data *data = i2c_get_clientdata(client);
1290	int val = simple_strtol(buf, NULL, 10);
1291	unsigned long mask;
 
 
 
 
 
 
1292
1293	mutex_lock(&data->update_lock);
1294	data->alarm_mask = val & 0x7fffffff;
1295	mask = data->alarm_mask
1296		| (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1297	adm1026_write_value(client, ADM1026_REG_MASK1,
1298		mask & 0xff);
1299	mask >>= 8;
1300	adm1026_write_value(client, ADM1026_REG_MASK2,
1301		mask & 0xff);
1302	mask >>= 8;
1303	adm1026_write_value(client, ADM1026_REG_MASK3,
1304		mask & 0xff);
1305	mask >>= 8;
1306	adm1026_write_value(client, ADM1026_REG_MASK4,
1307		mask & 0xff);
1308	mutex_unlock(&data->update_lock);
1309	return count;
1310}
1311
1312static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
1313	set_alarm_mask);
1314
1315
1316static ssize_t show_gpio(struct device *dev, struct device_attribute *attr, char *buf)
 
1317{
1318	struct adm1026_data *data = adm1026_update_device(dev);
1319	return sprintf(buf, "%ld\n", data->gpio);
1320}
1321static ssize_t set_gpio(struct device *dev, struct device_attribute *attr, const char *buf,
1322		size_t count)
1323{
1324	struct i2c_client *client = to_i2c_client(dev);
1325	struct adm1026_data *data = i2c_get_clientdata(client);
1326	int val = simple_strtol(buf, NULL, 10);
1327	long gpio;
 
 
 
 
 
 
1328
1329	mutex_lock(&data->update_lock);
1330	data->gpio = val & 0x1ffff;
1331	gpio = data->gpio;
1332	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1333	gpio >>= 8;
1334	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1335	gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1336	adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1337	mutex_unlock(&data->update_lock);
1338	return count;
1339}
1340
1341static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);
1342
1343
1344static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr, char *buf)
1345{
1346	struct adm1026_data *data = adm1026_update_device(dev);
1347	return sprintf(buf, "%ld\n", data->gpio_mask);
1348}
1349static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr, const char *buf,
1350		size_t count)
1351{
1352	struct i2c_client *client = to_i2c_client(dev);
1353	struct adm1026_data *data = i2c_get_clientdata(client);
1354	int val = simple_strtol(buf, NULL, 10);
1355	long mask;
 
 
 
 
 
 
1356
1357	mutex_lock(&data->update_lock);
1358	data->gpio_mask = val & 0x1ffff;
1359	mask = data->gpio_mask;
1360	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1361	mask >>= 8;
1362	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1363	mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1364	adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1365	mutex_unlock(&data->update_lock);
1366	return count;
1367}
1368
1369static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);
1370
1371static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr, char *buf)
 
1372{
1373	struct adm1026_data *data = adm1026_update_device(dev);
1374	return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1375}
1376static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr, const char *buf,
1377		size_t count)
 
1378{
1379	struct i2c_client *client = to_i2c_client(dev);
1380	struct adm1026_data *data = i2c_get_clientdata(client);
1381
1382	if (data->pwm1.enable == 1) {
1383		int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1384
1385		mutex_lock(&data->update_lock);
1386		data->pwm1.pwm = PWM_TO_REG(val);
1387		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1388		mutex_unlock(&data->update_lock);
1389	}
1390	return count;
1391}
1392static ssize_t show_auto_pwm_min(struct device *dev, struct device_attribute *attr, char *buf)
 
 
1393{
1394	struct adm1026_data *data = adm1026_update_device(dev);
1395	return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1396}
1397static ssize_t set_auto_pwm_min(struct device *dev, struct device_attribute *attr, const char *buf,
1398		size_t count)
 
 
1399{
1400	struct i2c_client *client = to_i2c_client(dev);
1401	struct adm1026_data *data = i2c_get_clientdata(client);
1402	int val = simple_strtol(buf, NULL, 10);
 
 
 
 
 
1403
1404	mutex_lock(&data->update_lock);
1405	data->pwm1.auto_pwm_min = SENSORS_LIMIT(val, 0, 255);
1406	if (data->pwm1.enable == 2) { /* apply immediately */
1407		data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1408			PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1409		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1410	}
1411	mutex_unlock(&data->update_lock);
1412	return count;
1413}
1414static ssize_t show_auto_pwm_max(struct device *dev, struct device_attribute *attr, char *buf)
 
 
1415{
1416	return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1417}
1418static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 
 
1419{
1420	struct adm1026_data *data = adm1026_update_device(dev);
1421	return sprintf(buf, "%d\n", data->pwm1.enable);
1422}
1423static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, const char *buf,
1424		size_t count)
 
1425{
1426	struct i2c_client *client = to_i2c_client(dev);
1427	struct adm1026_data *data = i2c_get_clientdata(client);
1428	int val = simple_strtol(buf, NULL, 10);
1429	int old_enable;
 
 
1430
1431	if ((val >= 0) && (val < 3)) {
1432		mutex_lock(&data->update_lock);
1433		old_enable = data->pwm1.enable;
1434		data->pwm1.enable = val;
1435		data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1436				| ((val == 2) ? CFG1_PWM_AFC : 0);
1437		adm1026_write_value(client, ADM1026_REG_CONFIG1,
1438			data->config1);
1439		if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1440			data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1441				PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1442			adm1026_write_value(client, ADM1026_REG_PWM,
1443				data->pwm1.pwm);
1444		} else if (!((old_enable == 1) && (val == 1))) {
1445			/* set pwm to safe value */
1446			data->pwm1.pwm = 255;
1447			adm1026_write_value(client, ADM1026_REG_PWM,
1448				data->pwm1.pwm);
1449		}
1450		mutex_unlock(&data->update_lock);
 
1451	}
 
 
1452	return count;
1453}
1454
1455/* enable PWM fan control */
1456static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1457static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1458static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1459static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1460	set_pwm_enable);
1461static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1462	set_pwm_enable);
1463static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1464	set_pwm_enable);
1465static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1466	show_auto_pwm_min, set_auto_pwm_min);
1467static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1468	show_auto_pwm_min, set_auto_pwm_min);
1469static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1470	show_auto_pwm_min, set_auto_pwm_min);
1471
1472static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1473static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1474static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1475
1476static struct attribute *adm1026_attributes[] = {
1477	&sensor_dev_attr_in0_input.dev_attr.attr,
1478	&sensor_dev_attr_in0_max.dev_attr.attr,
1479	&sensor_dev_attr_in0_min.dev_attr.attr,
1480	&sensor_dev_attr_in0_alarm.dev_attr.attr,
1481	&sensor_dev_attr_in1_input.dev_attr.attr,
1482	&sensor_dev_attr_in1_max.dev_attr.attr,
1483	&sensor_dev_attr_in1_min.dev_attr.attr,
1484	&sensor_dev_attr_in1_alarm.dev_attr.attr,
1485	&sensor_dev_attr_in2_input.dev_attr.attr,
1486	&sensor_dev_attr_in2_max.dev_attr.attr,
1487	&sensor_dev_attr_in2_min.dev_attr.attr,
1488	&sensor_dev_attr_in2_alarm.dev_attr.attr,
1489	&sensor_dev_attr_in3_input.dev_attr.attr,
1490	&sensor_dev_attr_in3_max.dev_attr.attr,
1491	&sensor_dev_attr_in3_min.dev_attr.attr,
1492	&sensor_dev_attr_in3_alarm.dev_attr.attr,
1493	&sensor_dev_attr_in4_input.dev_attr.attr,
1494	&sensor_dev_attr_in4_max.dev_attr.attr,
1495	&sensor_dev_attr_in4_min.dev_attr.attr,
1496	&sensor_dev_attr_in4_alarm.dev_attr.attr,
1497	&sensor_dev_attr_in5_input.dev_attr.attr,
1498	&sensor_dev_attr_in5_max.dev_attr.attr,
1499	&sensor_dev_attr_in5_min.dev_attr.attr,
1500	&sensor_dev_attr_in5_alarm.dev_attr.attr,
1501	&sensor_dev_attr_in6_input.dev_attr.attr,
1502	&sensor_dev_attr_in6_max.dev_attr.attr,
1503	&sensor_dev_attr_in6_min.dev_attr.attr,
1504	&sensor_dev_attr_in6_alarm.dev_attr.attr,
1505	&sensor_dev_attr_in7_input.dev_attr.attr,
1506	&sensor_dev_attr_in7_max.dev_attr.attr,
1507	&sensor_dev_attr_in7_min.dev_attr.attr,
1508	&sensor_dev_attr_in7_alarm.dev_attr.attr,
1509	&sensor_dev_attr_in10_input.dev_attr.attr,
1510	&sensor_dev_attr_in10_max.dev_attr.attr,
1511	&sensor_dev_attr_in10_min.dev_attr.attr,
1512	&sensor_dev_attr_in10_alarm.dev_attr.attr,
1513	&sensor_dev_attr_in11_input.dev_attr.attr,
1514	&sensor_dev_attr_in11_max.dev_attr.attr,
1515	&sensor_dev_attr_in11_min.dev_attr.attr,
1516	&sensor_dev_attr_in11_alarm.dev_attr.attr,
1517	&sensor_dev_attr_in12_input.dev_attr.attr,
1518	&sensor_dev_attr_in12_max.dev_attr.attr,
1519	&sensor_dev_attr_in12_min.dev_attr.attr,
1520	&sensor_dev_attr_in12_alarm.dev_attr.attr,
1521	&sensor_dev_attr_in13_input.dev_attr.attr,
1522	&sensor_dev_attr_in13_max.dev_attr.attr,
1523	&sensor_dev_attr_in13_min.dev_attr.attr,
1524	&sensor_dev_attr_in13_alarm.dev_attr.attr,
1525	&sensor_dev_attr_in14_input.dev_attr.attr,
1526	&sensor_dev_attr_in14_max.dev_attr.attr,
1527	&sensor_dev_attr_in14_min.dev_attr.attr,
1528	&sensor_dev_attr_in14_alarm.dev_attr.attr,
1529	&sensor_dev_attr_in15_input.dev_attr.attr,
1530	&sensor_dev_attr_in15_max.dev_attr.attr,
1531	&sensor_dev_attr_in15_min.dev_attr.attr,
1532	&sensor_dev_attr_in15_alarm.dev_attr.attr,
1533	&sensor_dev_attr_in16_input.dev_attr.attr,
1534	&sensor_dev_attr_in16_max.dev_attr.attr,
1535	&sensor_dev_attr_in16_min.dev_attr.attr,
1536	&sensor_dev_attr_in16_alarm.dev_attr.attr,
1537	&sensor_dev_attr_fan1_input.dev_attr.attr,
1538	&sensor_dev_attr_fan1_div.dev_attr.attr,
1539	&sensor_dev_attr_fan1_min.dev_attr.attr,
1540	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
1541	&sensor_dev_attr_fan2_input.dev_attr.attr,
1542	&sensor_dev_attr_fan2_div.dev_attr.attr,
1543	&sensor_dev_attr_fan2_min.dev_attr.attr,
1544	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
1545	&sensor_dev_attr_fan3_input.dev_attr.attr,
1546	&sensor_dev_attr_fan3_div.dev_attr.attr,
1547	&sensor_dev_attr_fan3_min.dev_attr.attr,
1548	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
1549	&sensor_dev_attr_fan4_input.dev_attr.attr,
1550	&sensor_dev_attr_fan4_div.dev_attr.attr,
1551	&sensor_dev_attr_fan4_min.dev_attr.attr,
1552	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
1553	&sensor_dev_attr_fan5_input.dev_attr.attr,
1554	&sensor_dev_attr_fan5_div.dev_attr.attr,
1555	&sensor_dev_attr_fan5_min.dev_attr.attr,
1556	&sensor_dev_attr_fan5_alarm.dev_attr.attr,
1557	&sensor_dev_attr_fan6_input.dev_attr.attr,
1558	&sensor_dev_attr_fan6_div.dev_attr.attr,
1559	&sensor_dev_attr_fan6_min.dev_attr.attr,
1560	&sensor_dev_attr_fan6_alarm.dev_attr.attr,
1561	&sensor_dev_attr_fan7_input.dev_attr.attr,
1562	&sensor_dev_attr_fan7_div.dev_attr.attr,
1563	&sensor_dev_attr_fan7_min.dev_attr.attr,
1564	&sensor_dev_attr_fan7_alarm.dev_attr.attr,
1565	&sensor_dev_attr_fan8_input.dev_attr.attr,
1566	&sensor_dev_attr_fan8_div.dev_attr.attr,
1567	&sensor_dev_attr_fan8_min.dev_attr.attr,
1568	&sensor_dev_attr_fan8_alarm.dev_attr.attr,
1569	&sensor_dev_attr_temp1_input.dev_attr.attr,
1570	&sensor_dev_attr_temp1_max.dev_attr.attr,
1571	&sensor_dev_attr_temp1_min.dev_attr.attr,
1572	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
1573	&sensor_dev_attr_temp2_input.dev_attr.attr,
1574	&sensor_dev_attr_temp2_max.dev_attr.attr,
1575	&sensor_dev_attr_temp2_min.dev_attr.attr,
1576	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
1577	&sensor_dev_attr_temp1_offset.dev_attr.attr,
1578	&sensor_dev_attr_temp2_offset.dev_attr.attr,
1579	&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1580	&sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1581	&sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1582	&sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1583	&sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1584	&sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1585	&sensor_dev_attr_temp1_crit.dev_attr.attr,
1586	&sensor_dev_attr_temp2_crit.dev_attr.attr,
1587	&dev_attr_temp1_crit_enable.attr,
1588	&dev_attr_temp2_crit_enable.attr,
1589	&dev_attr_cpu0_vid.attr,
1590	&dev_attr_vrm.attr,
1591	&dev_attr_alarms.attr,
1592	&dev_attr_alarm_mask.attr,
1593	&dev_attr_gpio.attr,
1594	&dev_attr_gpio_mask.attr,
1595	&dev_attr_pwm1.attr,
1596	&dev_attr_pwm2.attr,
1597	&dev_attr_pwm3.attr,
1598	&dev_attr_pwm1_enable.attr,
1599	&dev_attr_pwm2_enable.attr,
1600	&dev_attr_pwm3_enable.attr,
1601	&dev_attr_temp1_auto_point1_pwm.attr,
1602	&dev_attr_temp2_auto_point1_pwm.attr,
1603	&dev_attr_temp1_auto_point2_pwm.attr,
1604	&dev_attr_temp2_auto_point2_pwm.attr,
1605	&dev_attr_analog_out.attr,
1606	NULL
1607};
1608
1609static const struct attribute_group adm1026_group = {
1610	.attrs = adm1026_attributes,
1611};
1612
1613static struct attribute *adm1026_attributes_temp3[] = {
1614	&sensor_dev_attr_temp3_input.dev_attr.attr,
1615	&sensor_dev_attr_temp3_max.dev_attr.attr,
1616	&sensor_dev_attr_temp3_min.dev_attr.attr,
1617	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
1618	&sensor_dev_attr_temp3_offset.dev_attr.attr,
1619	&sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1620	&sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1621	&sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1622	&sensor_dev_attr_temp3_crit.dev_attr.attr,
1623	&dev_attr_temp3_crit_enable.attr,
1624	&dev_attr_temp3_auto_point1_pwm.attr,
1625	&dev_attr_temp3_auto_point2_pwm.attr,
1626	NULL
1627};
1628
1629static const struct attribute_group adm1026_group_temp3 = {
1630	.attrs = adm1026_attributes_temp3,
1631};
1632
1633static struct attribute *adm1026_attributes_in8_9[] = {
1634	&sensor_dev_attr_in8_input.dev_attr.attr,
1635	&sensor_dev_attr_in8_max.dev_attr.attr,
1636	&sensor_dev_attr_in8_min.dev_attr.attr,
1637	&sensor_dev_attr_in8_alarm.dev_attr.attr,
1638	&sensor_dev_attr_in9_input.dev_attr.attr,
1639	&sensor_dev_attr_in9_max.dev_attr.attr,
1640	&sensor_dev_attr_in9_min.dev_attr.attr,
1641	&sensor_dev_attr_in9_alarm.dev_attr.attr,
1642	NULL
1643};
1644
1645static const struct attribute_group adm1026_group_in8_9 = {
1646	.attrs = adm1026_attributes_in8_9,
1647};
1648
1649/* Return 0 if detection is successful, -ENODEV otherwise */
1650static int adm1026_detect(struct i2c_client *client,
1651			  struct i2c_board_info *info)
1652{
1653	struct i2c_adapter *adapter = client->adapter;
1654	int address = client->addr;
1655	int company, verstep;
1656
1657	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1658		/* We need to be able to do byte I/O */
1659		return -ENODEV;
1660	};
1661
1662	/* Now, we do the remaining detection. */
1663
1664	company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1665	verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1666
1667	dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1668		" COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1669		i2c_adapter_id(client->adapter), client->addr,
1670		company, verstep);
1671
1672	/* Determine the chip type. */
1673	dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1674		i2c_adapter_id(adapter), address);
1675	if (company == ADM1026_COMPANY_ANALOG_DEV
1676	    && verstep == ADM1026_VERSTEP_ADM1026) {
1677		/* Analog Devices ADM1026 */
1678	} else if (company == ADM1026_COMPANY_ANALOG_DEV
1679		&& (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1680		dev_err(&adapter->dev, "Unrecognized stepping "
1681			"0x%02x. Defaulting to ADM1026.\n", verstep);
 
1682	} else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1683		dev_err(&adapter->dev, "Found version/stepping "
1684			"0x%02x. Assuming generic ADM1026.\n",
1685			verstep);
1686	} else {
1687		dev_dbg(&adapter->dev, "Autodetection failed\n");
1688		/* Not an ADM1026... */
1689		return -ENODEV;
1690	}
1691
1692	strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1693
1694	return 0;
1695}
1696
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1697static int adm1026_probe(struct i2c_client *client,
1698			 const struct i2c_device_id *id)
1699{
 
 
1700	struct adm1026_data *data;
1701	int err;
1702
1703	data = kzalloc(sizeof(struct adm1026_data), GFP_KERNEL);
1704	if (!data) {
1705		err = -ENOMEM;
1706		goto exit;
1707	}
1708
1709	i2c_set_clientdata(client, data);
 
1710	mutex_init(&data->update_lock);
1711
1712	/* Set the VRM version */
1713	data->vrm = vid_which_vrm();
1714
1715	/* Initialize the ADM1026 chip */
1716	adm1026_init_client(client);
1717
1718	/* Register sysfs hooks */
1719	if ((err = sysfs_create_group(&client->dev.kobj, &adm1026_group)))
1720		goto exitfree;
1721	if (data->config1 & CFG1_AIN8_9)
1722		err = sysfs_create_group(&client->dev.kobj,
1723					 &adm1026_group_in8_9);
1724	else
1725		err = sysfs_create_group(&client->dev.kobj,
1726					 &adm1026_group_temp3);
1727	if (err)
1728		goto exitremove;
1729
1730	data->hwmon_dev = hwmon_device_register(&client->dev);
1731	if (IS_ERR(data->hwmon_dev)) {
1732		err = PTR_ERR(data->hwmon_dev);
1733		goto exitremove;
1734	}
1735
1736	return 0;
1737
1738	/* Error out and cleanup code */
1739exitremove:
1740	sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1741	if (data->config1 & CFG1_AIN8_9)
1742		sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1743	else
1744		sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1745exitfree:
1746	kfree(data);
1747exit:
1748	return err;
1749}
1750
1751static int adm1026_remove(struct i2c_client *client)
1752{
1753	struct adm1026_data *data = i2c_get_clientdata(client);
1754	hwmon_device_unregister(data->hwmon_dev);
1755	sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1756	if (data->config1 & CFG1_AIN8_9)
1757		sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1758	else
1759		sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1760	kfree(data);
1761	return 0;
1762}
1763
1764static int __init sm_adm1026_init(void)
1765{
1766	return i2c_add_driver(&adm1026_driver);
1767}
 
 
 
 
 
 
1768
1769static void __exit sm_adm1026_exit(void)
1770{
1771	i2c_del_driver(&adm1026_driver);
1772}
1773
1774MODULE_LICENSE("GPL");
1775MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1776	      "Justin Thiessen <jthiessen@penguincomputing.com>");
1777MODULE_DESCRIPTION("ADM1026 driver");
1778
1779module_init(sm_adm1026_init);
1780module_exit(sm_adm1026_exit);