linux/drivers/hwmon/adm1026.c
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   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,
  53                 "List of GPIO pins (0-16) to program as outputs");
  54module_param_array(gpio_inverted, int, NULL, 0);
  55MODULE_PARM_DESC(gpio_inverted,
  56                 "List of GPIO pins (0-16) to program as inverted");
  57module_param_array(gpio_normal, int, NULL, 0);
  58MODULE_PARM_DESC(gpio_normal,
  59                 "List of GPIO pins (0-16) to program as 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/*
  94 * There are 10 general analog inputs and 7 dedicated inputs
  95 * They are:
  96 *    0 - 9  =  AIN0 - AIN9
  97 *       10  =  Vbat
  98 *       11  =  3.3V Standby
  99 *       12  =  3.3V Main
 100 *       13  =  +5V
 101 *       14  =  Vccp (CPU core voltage)
 102 *       15  =  +12V
 103 *       16  =  -12V
 104 */
 105static u16 ADM1026_REG_IN[] = {
 106                0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
 107                0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
 108                0x2b, 0x2c, 0x2d, 0x2e, 0x2f
 109        };
 110static u16 ADM1026_REG_IN_MIN[] = {
 111                0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
 112                0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
 113                0x4b, 0x4c, 0x4d, 0x4e, 0x4f
 114        };
 115static u16 ADM1026_REG_IN_MAX[] = {
 116                0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
 117                0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
 118                0x43, 0x44, 0x45, 0x46, 0x47
 119        };
 120
 121/*
 122 * Temperatures are:
 123 *    0 - Internal
 124 *    1 - External 1
 125 *    2 - External 2
 126 */
 127static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
 128static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
 129static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
 130static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
 131static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
 132static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
 133
 134#define ADM1026_REG_FAN(nr)             (0x38 + (nr))
 135#define ADM1026_REG_FAN_MIN(nr)         (0x60 + (nr))
 136#define ADM1026_REG_FAN_DIV_0_3         0x02
 137#define ADM1026_REG_FAN_DIV_4_7         0x03
 138
 139#define ADM1026_REG_DAC                 0x04
 140#define ADM1026_REG_PWM                 0x05
 141
 142#define ADM1026_REG_GPIO_CFG_0_3        0x08
 143#define ADM1026_REG_GPIO_CFG_4_7        0x09
 144#define ADM1026_REG_GPIO_CFG_8_11       0x0a
 145#define ADM1026_REG_GPIO_CFG_12_15      0x0b
 146/* CFG_16 in REG_CFG3 */
 147#define ADM1026_REG_GPIO_STATUS_0_7     0x24
 148#define ADM1026_REG_GPIO_STATUS_8_15    0x25
 149/* STATUS_16 in REG_STATUS4 */
 150#define ADM1026_REG_GPIO_MASK_0_7       0x1c
 151#define ADM1026_REG_GPIO_MASK_8_15      0x1d
 152/* MASK_16 in REG_MASK4 */
 153
 154#define ADM1026_REG_COMPANY             0x16
 155#define ADM1026_REG_VERSTEP             0x17
 156/* These are the recognized values for the above regs */
 157#define ADM1026_COMPANY_ANALOG_DEV      0x41
 158#define ADM1026_VERSTEP_GENERIC         0x40
 159#define ADM1026_VERSTEP_ADM1026         0x44
 160
 161#define ADM1026_REG_MASK1               0x18
 162#define ADM1026_REG_MASK2               0x19
 163#define ADM1026_REG_MASK3               0x1a
 164#define ADM1026_REG_MASK4               0x1b
 165
 166#define ADM1026_REG_STATUS1             0x20
 167#define ADM1026_REG_STATUS2             0x21
 168#define ADM1026_REG_STATUS3             0x22
 169#define ADM1026_REG_STATUS4             0x23
 170
 171#define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
 172#define ADM1026_FAN_CONTROL_TEMP_RANGE  20
 173#define ADM1026_PWM_MAX                 255
 174
 175/*
 176 * Conversions. Rounding and limit checking is only done on the TO_REG
 177 * variants. Note that you should be a bit careful with which arguments
 178 * these macros are called: arguments may be evaluated more than once.
 179 */
 180
 181/*
 182 * IN are scaled according to built-in resistors.  These are the
 183 *   voltages corresponding to 3/4 of full scale (192 or 0xc0)
 184 *   NOTE: The -12V input needs an additional factor to account
 185 *      for the Vref pullup resistor.
 186 *      NEG12_OFFSET = SCALE * Vref / V-192 - Vref
 187 *                   = 13875 * 2.50 / 1.875 - 2500
 188 *                   = 16000
 189 *
 190 * The values in this table are based on Table II, page 15 of the
 191 *    datasheet.
 192 */
 193static int adm1026_scaling[] = { /* .001 Volts */
 194                2250, 2250, 2250, 2250, 2250, 2250,
 195                1875, 1875, 1875, 1875, 3000, 3330,
 196                3330, 4995, 2250, 12000, 13875
 197        };
 198#define NEG12_OFFSET  16000
 199#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
 200#define INS_TO_REG(n, val)      \
 201                SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \
 202                      adm1026_scaling[n], 192)
 203#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
 204
 205/*
 206 * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
 207 *   and we assume a 2 pulse-per-rev fan tach signal
 208 *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
 209 */
 210#define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
 211                                clamp_val(1350000 / ((val) * (div)), \
 212                                              1, 254))
 213#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
 214                                1350000 / ((val) * (div)))
 215#define DIV_FROM_REG(val) (1 << (val))
 216#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
 217
 218/* Temperature is reported in 1 degC increments */
 219#define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
 220                                           1000)
 221#define TEMP_FROM_REG(val) ((val) * 1000)
 222#define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
 223                                             1000)
 224#define OFFSET_FROM_REG(val) ((val) * 1000)
 225
 226#define PWM_TO_REG(val) (clamp_val(val, 0, 255))
 227#define PWM_FROM_REG(val) (val)
 228
 229#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
 230#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
 231
 232/*
 233 * Analog output is a voltage, and scaled to millivolts.  The datasheet
 234 *   indicates that the DAC could be used to drive the fans, but in our
 235 *   example board (Arima HDAMA) it isn't connected to the fans at all.
 236 */
 237#define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \
 238                                          2500)
 239#define DAC_FROM_REG(val) (((val) * 2500) / 255)
 240
 241/*
 242 * Chip sampling rates
 243 *
 244 * Some sensors are not updated more frequently than once per second
 245 *    so it doesn't make sense to read them more often than that.
 246 *    We cache the results and return the saved data if the driver
 247 *    is called again before a second has elapsed.
 248 *
 249 * Also, there is significant configuration data for this chip
 250 *    So, we keep the config data up to date in the cache
 251 *    when it is written and only sample it once every 5 *minutes*
 252 */
 253#define ADM1026_DATA_INTERVAL           (1 * HZ)
 254#define ADM1026_CONFIG_INTERVAL         (5 * 60 * HZ)
 255
 256/*
 257 * We allow for multiple chips in a single system.
 258 *
 259 * For each registered ADM1026, we need to keep state information
 260 * at client->data. The adm1026_data structure is dynamically
 261 * allocated, when a new client structure is allocated.
 262 */
 263
 264struct pwm_data {
 265        u8 pwm;
 266        u8 enable;
 267        u8 auto_pwm_min;
 268};
 269
 270struct adm1026_data {
 271        struct i2c_client *client;
 272        const struct attribute_group *groups[3];
 273
 274        struct mutex update_lock;
 275        int valid;              /* !=0 if following fields are valid */
 276        unsigned long last_reading;     /* In jiffies */
 277        unsigned long last_config;      /* In jiffies */
 278
 279        u8 in[17];              /* Register value */
 280        u8 in_max[17];          /* Register value */
 281        u8 in_min[17];          /* Register value */
 282        s8 temp[3];             /* Register value */
 283        s8 temp_min[3];         /* Register value */
 284        s8 temp_max[3];         /* Register value */
 285        s8 temp_tmin[3];        /* Register value */
 286        s8 temp_crit[3];        /* Register value */
 287        s8 temp_offset[3];      /* Register value */
 288        u8 fan[8];              /* Register value */
 289        u8 fan_min[8];          /* Register value */
 290        u8 fan_div[8];          /* Decoded value */
 291        struct pwm_data pwm1;   /* Pwm control values */
 292        u8 vrm;                 /* VRM version */
 293        u8 analog_out;          /* Register value (DAC) */
 294        long alarms;            /* Register encoding, combined */
 295        long alarm_mask;        /* Register encoding, combined */
 296        long gpio;              /* Register encoding, combined */
 297        long gpio_mask;         /* Register encoding, combined */
 298        u8 gpio_config[17];     /* Decoded value */
 299        u8 config1;             /* Register value */
 300        u8 config2;             /* Register value */
 301        u8 config3;             /* Register value */
 302};
 303
 304static int adm1026_read_value(struct i2c_client *client, u8 reg)
 305{
 306        int res;
 307
 308        if (reg < 0x80) {
 309                /* "RAM" locations */
 310                res = i2c_smbus_read_byte_data(client, reg) & 0xff;
 311        } else {
 312                /* EEPROM, do nothing */
 313                res = 0;
 314        }
 315        return res;
 316}
 317
 318static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 319{
 320        int res;
 321
 322        if (reg < 0x80) {
 323                /* "RAM" locations */
 324                res = i2c_smbus_write_byte_data(client, reg, value);
 325        } else {
 326                /* EEPROM, do nothing */
 327                res = 0;
 328        }
 329        return res;
 330}
 331
 332static struct adm1026_data *adm1026_update_device(struct device *dev)
 333{
 334        struct adm1026_data *data = dev_get_drvdata(dev);
 335        struct i2c_client *client = data->client;
 336        int i;
 337        long value, alarms, gpio;
 338
 339        mutex_lock(&data->update_lock);
 340        if (!data->valid
 341            || time_after(jiffies,
 342                          data->last_reading + ADM1026_DATA_INTERVAL)) {
 343                /* Things that change quickly */
 344                dev_dbg(&client->dev, "Reading sensor values\n");
 345                for (i = 0; i <= 16; ++i) {
 346                        data->in[i] =
 347                            adm1026_read_value(client, ADM1026_REG_IN[i]);
 348                }
 349
 350                for (i = 0; i <= 7; ++i) {
 351                        data->fan[i] =
 352                            adm1026_read_value(client, ADM1026_REG_FAN(i));
 353                }
 354
 355                for (i = 0; i <= 2; ++i) {
 356                        /*
 357                         * NOTE: temp[] is s8 and we assume 2's complement
 358                         *   "conversion" in the assignment
 359                         */
 360                        data->temp[i] =
 361                            adm1026_read_value(client, ADM1026_REG_TEMP[i]);
 362                }
 363
 364                data->pwm1.pwm = adm1026_read_value(client,
 365                        ADM1026_REG_PWM);
 366                data->analog_out = adm1026_read_value(client,
 367                        ADM1026_REG_DAC);
 368                /* GPIO16 is MSbit of alarms, move it to gpio */
 369                alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
 370                gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 371                alarms &= 0x7f;
 372                alarms <<= 8;
 373                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
 374                alarms <<= 8;
 375                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
 376                alarms <<= 8;
 377                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
 378                data->alarms = alarms;
 379
 380                /* Read the GPIO values */
 381                gpio |= adm1026_read_value(client,
 382                        ADM1026_REG_GPIO_STATUS_8_15);
 383                gpio <<= 8;
 384                gpio |= adm1026_read_value(client,
 385                        ADM1026_REG_GPIO_STATUS_0_7);
 386                data->gpio = gpio;
 387
 388                data->last_reading = jiffies;
 389        }       /* last_reading */
 390
 391        if (!data->valid ||
 392            time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
 393                /* Things that don't change often */
 394                dev_dbg(&client->dev, "Reading config values\n");
 395                for (i = 0; i <= 16; ++i) {
 396                        data->in_min[i] = adm1026_read_value(client,
 397                                ADM1026_REG_IN_MIN[i]);
 398                        data->in_max[i] = adm1026_read_value(client,
 399                                ADM1026_REG_IN_MAX[i]);
 400                }
 401
 402                value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
 403                        | (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
 404                        << 8);
 405                for (i = 0; i <= 7; ++i) {
 406                        data->fan_min[i] = adm1026_read_value(client,
 407                                ADM1026_REG_FAN_MIN(i));
 408                        data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 409                        value >>= 2;
 410                }
 411
 412                for (i = 0; i <= 2; ++i) {
 413                        /*
 414                         * NOTE: temp_xxx[] are s8 and we assume 2's
 415                         *    complement "conversion" in the assignment
 416                         */
 417                        data->temp_min[i] = adm1026_read_value(client,
 418                                ADM1026_REG_TEMP_MIN[i]);
 419                        data->temp_max[i] = adm1026_read_value(client,
 420                                ADM1026_REG_TEMP_MAX[i]);
 421                        data->temp_tmin[i] = adm1026_read_value(client,
 422                                ADM1026_REG_TEMP_TMIN[i]);
 423                        data->temp_crit[i] = adm1026_read_value(client,
 424                                ADM1026_REG_TEMP_THERM[i]);
 425                        data->temp_offset[i] = adm1026_read_value(client,
 426                                ADM1026_REG_TEMP_OFFSET[i]);
 427                }
 428
 429                /* Read the STATUS/alarm masks */
 430                alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
 431                gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 432                alarms = (alarms & 0x7f) << 8;
 433                alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
 434                alarms <<= 8;
 435                alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
 436                alarms <<= 8;
 437                alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
 438                data->alarm_mask = alarms;
 439
 440                /* Read the GPIO values */
 441                gpio |= adm1026_read_value(client,
 442                        ADM1026_REG_GPIO_MASK_8_15);
 443                gpio <<= 8;
 444                gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
 445                data->gpio_mask = gpio;
 446
 447                /* Read various values from CONFIG1 */
 448                data->config1 = adm1026_read_value(client,
 449                        ADM1026_REG_CONFIG1);
 450                if (data->config1 & CFG1_PWM_AFC) {
 451                        data->pwm1.enable = 2;
 452                        data->pwm1.auto_pwm_min =
 453                                PWM_MIN_FROM_REG(data->pwm1.pwm);
 454                }
 455                /* Read the GPIO config */
 456                data->config2 = adm1026_read_value(client,
 457                        ADM1026_REG_CONFIG2);
 458                data->config3 = adm1026_read_value(client,
 459                        ADM1026_REG_CONFIG3);
 460                data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 461
 462                value = 0;
 463                for (i = 0; i <= 15; ++i) {
 464                        if ((i & 0x03) == 0) {
 465                                value = adm1026_read_value(client,
 466                                            ADM1026_REG_GPIO_CFG_0_3 + i/4);
 467                        }
 468                        data->gpio_config[i] = value & 0x03;
 469                        value >>= 2;
 470                }
 471
 472                data->last_config = jiffies;
 473        }       /* last_config */
 474
 475        data->valid = 1;
 476        mutex_unlock(&data->update_lock);
 477        return data;
 478}
 479
 480static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 481                char *buf)
 482{
 483        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 484        int nr = sensor_attr->index;
 485        struct adm1026_data *data = adm1026_update_device(dev);
 486        return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
 487}
 488static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
 489                char *buf)
 490{
 491        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 492        int nr = sensor_attr->index;
 493        struct adm1026_data *data = adm1026_update_device(dev);
 494        return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
 495}
 496static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 497                const char *buf, size_t count)
 498{
 499        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 500        int nr = sensor_attr->index;
 501        struct adm1026_data *data = dev_get_drvdata(dev);
 502        struct i2c_client *client = data->client;
 503        long val;
 504        int err;
 505
 506        err = kstrtol(buf, 10, &val);
 507        if (err)
 508                return err;
 509
 510        mutex_lock(&data->update_lock);
 511        data->in_min[nr] = INS_TO_REG(nr, val);
 512        adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
 513        mutex_unlock(&data->update_lock);
 514        return count;
 515}
 516static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 517                char *buf)
 518{
 519        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 520        int nr = sensor_attr->index;
 521        struct adm1026_data *data = adm1026_update_device(dev);
 522        return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
 523}
 524static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 525                const char *buf, size_t count)
 526{
 527        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 528        int nr = sensor_attr->index;
 529        struct adm1026_data *data = dev_get_drvdata(dev);
 530        struct i2c_client *client = data->client;
 531        long val;
 532        int err;
 533
 534        err = kstrtol(buf, 10, &val);
 535        if (err)
 536                return err;
 537
 538        mutex_lock(&data->update_lock);
 539        data->in_max[nr] = INS_TO_REG(nr, val);
 540        adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
 541        mutex_unlock(&data->update_lock);
 542        return count;
 543}
 544
 545#define in_reg(offset)                                          \
 546static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
 547                NULL, offset);                                  \
 548static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,  \
 549                show_in_min, set_in_min, offset);               \
 550static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,  \
 551                show_in_max, set_in_max, offset);
 552
 553
 554in_reg(0);
 555in_reg(1);
 556in_reg(2);
 557in_reg(3);
 558in_reg(4);
 559in_reg(5);
 560in_reg(6);
 561in_reg(7);
 562in_reg(8);
 563in_reg(9);
 564in_reg(10);
 565in_reg(11);
 566in_reg(12);
 567in_reg(13);
 568in_reg(14);
 569in_reg(15);
 570
 571static ssize_t show_in16(struct device *dev, struct device_attribute *attr,
 572                         char *buf)
 573{
 574        struct adm1026_data *data = adm1026_update_device(dev);
 575        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
 576                NEG12_OFFSET);
 577}
 578static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr,
 579                             char *buf)
 580{
 581        struct adm1026_data *data = adm1026_update_device(dev);
 582        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
 583                - NEG12_OFFSET);
 584}
 585static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
 586                            const char *buf, size_t count)
 587{
 588        struct adm1026_data *data = dev_get_drvdata(dev);
 589        struct i2c_client *client = data->client;
 590        long val;
 591        int err;
 592
 593        err = kstrtol(buf, 10, &val);
 594        if (err)
 595                return err;
 596
 597        mutex_lock(&data->update_lock);
 598        data->in_min[16] = INS_TO_REG(16,
 599                                      clamp_val(val, INT_MIN,
 600                                                INT_MAX - NEG12_OFFSET) +
 601                                      NEG12_OFFSET);
 602        adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
 603        mutex_unlock(&data->update_lock);
 604        return count;
 605}
 606static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr,
 607                             char *buf)
 608{
 609        struct adm1026_data *data = adm1026_update_device(dev);
 610        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
 611                        - NEG12_OFFSET);
 612}
 613static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
 614                            const char *buf, size_t count)
 615{
 616        struct adm1026_data *data = dev_get_drvdata(dev);
 617        struct i2c_client *client = data->client;
 618        long val;
 619        int err;
 620
 621        err = kstrtol(buf, 10, &val);
 622        if (err)
 623                return err;
 624
 625        mutex_lock(&data->update_lock);
 626        data->in_max[16] = INS_TO_REG(16,
 627                                      clamp_val(val, INT_MIN,
 628                                                INT_MAX - NEG12_OFFSET) +
 629                                      NEG12_OFFSET);
 630        adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
 631        mutex_unlock(&data->update_lock);
 632        return count;
 633}
 634
 635static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
 636static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min,
 637                          set_in16_min, 16);
 638static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max,
 639                          set_in16_max, 16);
 640
 641
 642/* Now add fan read/write functions */
 643
 644static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 645                char *buf)
 646{
 647        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 648        int nr = sensor_attr->index;
 649        struct adm1026_data *data = adm1026_update_device(dev);
 650        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
 651                data->fan_div[nr]));
 652}
 653static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
 654                char *buf)
 655{
 656        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 657        int nr = sensor_attr->index;
 658        struct adm1026_data *data = adm1026_update_device(dev);
 659        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
 660                data->fan_div[nr]));
 661}
 662static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 663                const char *buf, size_t count)
 664{
 665        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 666        int nr = sensor_attr->index;
 667        struct adm1026_data *data = dev_get_drvdata(dev);
 668        struct i2c_client *client = data->client;
 669        long val;
 670        int err;
 671
 672        err = kstrtol(buf, 10, &val);
 673        if (err)
 674                return err;
 675
 676        mutex_lock(&data->update_lock);
 677        data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
 678        adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
 679                data->fan_min[nr]);
 680        mutex_unlock(&data->update_lock);
 681        return count;
 682}
 683
 684#define fan_offset(offset)                                              \
 685static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
 686                offset - 1);                                            \
 687static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,         \
 688                show_fan_min, set_fan_min, offset - 1);
 689
 690fan_offset(1);
 691fan_offset(2);
 692fan_offset(3);
 693fan_offset(4);
 694fan_offset(5);
 695fan_offset(6);
 696fan_offset(7);
 697fan_offset(8);
 698
 699/* Adjust fan_min to account for new fan divisor */
 700static void fixup_fan_min(struct device *dev, int fan, int old_div)
 701{
 702        struct adm1026_data *data = dev_get_drvdata(dev);
 703        struct i2c_client *client = data->client;
 704        int new_min;
 705        int new_div = data->fan_div[fan];
 706
 707        /* 0 and 0xff are special.  Don't adjust them */
 708        if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
 709                return;
 710
 711        new_min = data->fan_min[fan] * old_div / new_div;
 712        new_min = clamp_val(new_min, 1, 254);
 713        data->fan_min[fan] = new_min;
 714        adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
 715}
 716
 717/* Now add fan_div read/write functions */
 718static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 719                char *buf)
 720{
 721        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 722        int nr = sensor_attr->index;
 723        struct adm1026_data *data = adm1026_update_device(dev);
 724        return sprintf(buf, "%d\n", data->fan_div[nr]);
 725}
 726static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 727                const char *buf, size_t count)
 728{
 729        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 730        int nr = sensor_attr->index;
 731        struct adm1026_data *data = dev_get_drvdata(dev);
 732        struct i2c_client *client = data->client;
 733        long val;
 734        int orig_div, new_div;
 735        int err;
 736
 737        err = kstrtol(buf, 10, &val);
 738        if (err)
 739                return err;
 740
 741        new_div = DIV_TO_REG(val);
 742
 743        mutex_lock(&data->update_lock);
 744        orig_div = data->fan_div[nr];
 745        data->fan_div[nr] = DIV_FROM_REG(new_div);
 746
 747        if (nr < 4) { /* 0 <= nr < 4 */
 748                adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
 749                                    (DIV_TO_REG(data->fan_div[0]) << 0) |
 750                                    (DIV_TO_REG(data->fan_div[1]) << 2) |
 751                                    (DIV_TO_REG(data->fan_div[2]) << 4) |
 752                                    (DIV_TO_REG(data->fan_div[3]) << 6));
 753        } else { /* 3 < nr < 8 */
 754                adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
 755                                    (DIV_TO_REG(data->fan_div[4]) << 0) |
 756                                    (DIV_TO_REG(data->fan_div[5]) << 2) |
 757                                    (DIV_TO_REG(data->fan_div[6]) << 4) |
 758                                    (DIV_TO_REG(data->fan_div[7]) << 6));
 759        }
 760
 761        if (data->fan_div[nr] != orig_div)
 762                fixup_fan_min(dev, nr, orig_div);
 763
 764        mutex_unlock(&data->update_lock);
 765        return count;
 766}
 767
 768#define fan_offset_div(offset)                                          \
 769static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR,         \
 770                show_fan_div, set_fan_div, offset - 1);
 771
 772fan_offset_div(1);
 773fan_offset_div(2);
 774fan_offset_div(3);
 775fan_offset_div(4);
 776fan_offset_div(5);
 777fan_offset_div(6);
 778fan_offset_div(7);
 779fan_offset_div(8);
 780
 781/* Temps */
 782static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 783                char *buf)
 784{
 785        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 786        int nr = sensor_attr->index;
 787        struct adm1026_data *data = adm1026_update_device(dev);
 788        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 789}
 790static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
 791                char *buf)
 792{
 793        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 794        int nr = sensor_attr->index;
 795        struct adm1026_data *data = adm1026_update_device(dev);
 796        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
 797}
 798static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
 799                const char *buf, size_t count)
 800{
 801        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 802        int nr = sensor_attr->index;
 803        struct adm1026_data *data = dev_get_drvdata(dev);
 804        struct i2c_client *client = data->client;
 805        long val;
 806        int err;
 807
 808        err = kstrtol(buf, 10, &val);
 809        if (err)
 810                return err;
 811
 812        mutex_lock(&data->update_lock);
 813        data->temp_min[nr] = TEMP_TO_REG(val);
 814        adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
 815                data->temp_min[nr]);
 816        mutex_unlock(&data->update_lock);
 817        return count;
 818}
 819static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
 820                char *buf)
 821{
 822        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 823        int nr = sensor_attr->index;
 824        struct adm1026_data *data = adm1026_update_device(dev);
 825        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
 826}
 827static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 828                const char *buf, size_t count)
 829{
 830        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 831        int nr = sensor_attr->index;
 832        struct adm1026_data *data = dev_get_drvdata(dev);
 833        struct i2c_client *client = data->client;
 834        long val;
 835        int err;
 836
 837        err = kstrtol(buf, 10, &val);
 838        if (err)
 839                return err;
 840
 841        mutex_lock(&data->update_lock);
 842        data->temp_max[nr] = TEMP_TO_REG(val);
 843        adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
 844                data->temp_max[nr]);
 845        mutex_unlock(&data->update_lock);
 846        return count;
 847}
 848
 849#define temp_reg(offset)                                                \
 850static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,     \
 851                NULL, offset - 1);                                      \
 852static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,        \
 853                show_temp_min, set_temp_min, offset - 1);               \
 854static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,        \
 855                show_temp_max, set_temp_max, offset - 1);
 856
 857
 858temp_reg(1);
 859temp_reg(2);
 860temp_reg(3);
 861
 862static ssize_t show_temp_offset(struct device *dev,
 863                struct device_attribute *attr, char *buf)
 864{
 865        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 866        int nr = sensor_attr->index;
 867        struct adm1026_data *data = adm1026_update_device(dev);
 868        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
 869}
 870static ssize_t set_temp_offset(struct device *dev,
 871                struct device_attribute *attr, const char *buf,
 872                size_t count)
 873{
 874        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 875        int nr = sensor_attr->index;
 876        struct adm1026_data *data = dev_get_drvdata(dev);
 877        struct i2c_client *client = data->client;
 878        long val;
 879        int err;
 880
 881        err = kstrtol(buf, 10, &val);
 882        if (err)
 883                return err;
 884
 885        mutex_lock(&data->update_lock);
 886        data->temp_offset[nr] = TEMP_TO_REG(val);
 887        adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
 888                data->temp_offset[nr]);
 889        mutex_unlock(&data->update_lock);
 890        return count;
 891}
 892
 893#define temp_offset_reg(offset)                                         \
 894static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR,     \
 895                show_temp_offset, set_temp_offset, offset - 1);
 896
 897temp_offset_reg(1);
 898temp_offset_reg(2);
 899temp_offset_reg(3);
 900
 901static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
 902                struct device_attribute *attr, char *buf)
 903{
 904        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 905        int nr = sensor_attr->index;
 906        struct adm1026_data *data = adm1026_update_device(dev);
 907        return sprintf(buf, "%d\n", TEMP_FROM_REG(
 908                ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
 909}
 910static ssize_t show_temp_auto_point2_temp(struct device *dev,
 911                struct device_attribute *attr, char *buf)
 912{
 913        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 914        int nr = sensor_attr->index;
 915        struct adm1026_data *data = adm1026_update_device(dev);
 916        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
 917                ADM1026_FAN_CONTROL_TEMP_RANGE));
 918}
 919static ssize_t show_temp_auto_point1_temp(struct device *dev,
 920                struct device_attribute *attr, char *buf)
 921{
 922        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 923        int nr = sensor_attr->index;
 924        struct adm1026_data *data = adm1026_update_device(dev);
 925        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
 926}
 927static ssize_t set_temp_auto_point1_temp(struct device *dev,
 928                struct device_attribute *attr, const char *buf, size_t count)
 929{
 930        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 931        int nr = sensor_attr->index;
 932        struct adm1026_data *data = dev_get_drvdata(dev);
 933        struct i2c_client *client = data->client;
 934        long val;
 935        int err;
 936
 937        err = kstrtol(buf, 10, &val);
 938        if (err)
 939                return err;
 940
 941        mutex_lock(&data->update_lock);
 942        data->temp_tmin[nr] = TEMP_TO_REG(val);
 943        adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
 944                data->temp_tmin[nr]);
 945        mutex_unlock(&data->update_lock);
 946        return count;
 947}
 948
 949#define temp_auto_point(offset)                                         \
 950static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp,              \
 951                S_IRUGO | S_IWUSR, show_temp_auto_point1_temp,          \
 952                set_temp_auto_point1_temp, offset - 1);                 \
 953static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
 954                show_temp_auto_point1_temp_hyst, NULL, offset - 1);     \
 955static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO,     \
 956                show_temp_auto_point2_temp, NULL, offset - 1);
 957
 958temp_auto_point(1);
 959temp_auto_point(2);
 960temp_auto_point(3);
 961
 962static ssize_t show_temp_crit_enable(struct device *dev,
 963                struct device_attribute *attr, char *buf)
 964{
 965        struct adm1026_data *data = adm1026_update_device(dev);
 966        return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
 967}
 968static ssize_t set_temp_crit_enable(struct device *dev,
 969                struct device_attribute *attr, const char *buf, size_t count)
 970{
 971        struct adm1026_data *data = dev_get_drvdata(dev);
 972        struct i2c_client *client = data->client;
 973        unsigned long val;
 974        int err;
 975
 976        err = kstrtoul(buf, 10, &val);
 977        if (err)
 978                return err;
 979
 980        if (val > 1)
 981                return -EINVAL;
 982
 983        mutex_lock(&data->update_lock);
 984        data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
 985        adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
 986        mutex_unlock(&data->update_lock);
 987
 988        return count;
 989}
 990
 991#define temp_crit_enable(offset)                                \
 992static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
 993        show_temp_crit_enable, set_temp_crit_enable);
 994
 995temp_crit_enable(1);
 996temp_crit_enable(2);
 997temp_crit_enable(3);
 998
 999static ssize_t show_temp_crit(struct device *dev,
1000                struct device_attribute *attr, char *buf)
1001{
1002        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1003        int nr = sensor_attr->index;
1004        struct adm1026_data *data = adm1026_update_device(dev);
1005        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
1006}
1007static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
1008                const char *buf, size_t count)
1009{
1010        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1011        int nr = sensor_attr->index;
1012        struct adm1026_data *data = dev_get_drvdata(dev);
1013        struct i2c_client *client = data->client;
1014        long val;
1015        int err;
1016
1017        err = kstrtol(buf, 10, &val);
1018        if (err)
1019                return err;
1020
1021        mutex_lock(&data->update_lock);
1022        data->temp_crit[nr] = TEMP_TO_REG(val);
1023        adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1024                data->temp_crit[nr]);
1025        mutex_unlock(&data->update_lock);
1026        return count;
1027}
1028
1029#define temp_crit_reg(offset)                                           \
1030static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR,       \
1031                show_temp_crit, set_temp_crit, offset - 1);
1032
1033temp_crit_reg(1);
1034temp_crit_reg(2);
1035temp_crit_reg(3);
1036
1037static ssize_t show_analog_out_reg(struct device *dev,
1038                                   struct device_attribute *attr, char *buf)
1039{
1040        struct adm1026_data *data = adm1026_update_device(dev);
1041        return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1042}
1043static ssize_t set_analog_out_reg(struct device *dev,
1044                                  struct device_attribute *attr,
1045                                  const char *buf, size_t count)
1046{
1047        struct adm1026_data *data = dev_get_drvdata(dev);
1048        struct i2c_client *client = data->client;
1049        long val;
1050        int err;
1051
1052        err = kstrtol(buf, 10, &val);
1053        if (err)
1054                return err;
1055
1056        mutex_lock(&data->update_lock);
1057        data->analog_out = DAC_TO_REG(val);
1058        adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1059        mutex_unlock(&data->update_lock);
1060        return count;
1061}
1062
1063static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
1064        set_analog_out_reg);
1065
1066static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1067                            char *buf)
1068{
1069        struct adm1026_data *data = adm1026_update_device(dev);
1070        int vid = (data->gpio >> 11) & 0x1f;
1071
1072        dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1073        return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1074}
1075
1076static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1077
1078static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1079                            char *buf)
1080{
1081        struct adm1026_data *data = dev_get_drvdata(dev);
1082        return sprintf(buf, "%d\n", data->vrm);
1083}
1084
1085static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1086                             const char *buf, size_t count)
1087{
1088        struct adm1026_data *data = dev_get_drvdata(dev);
1089        unsigned long val;
1090        int err;
1091
1092        err = kstrtoul(buf, 10, &val);
1093        if (err)
1094                return err;
1095
1096        if (val > 255)
1097                return -EINVAL;
1098
1099        data->vrm = val;
1100        return count;
1101}
1102
1103static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1104
1105static ssize_t show_alarms_reg(struct device *dev,
1106                               struct device_attribute *attr, char *buf)
1107{
1108        struct adm1026_data *data = adm1026_update_device(dev);
1109        return sprintf(buf, "%ld\n", data->alarms);
1110}
1111
1112static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1113
1114static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1115                          char *buf)
1116{
1117        struct adm1026_data *data = adm1026_update_device(dev);
1118        int bitnr = to_sensor_dev_attr(attr)->index;
1119        return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1120}
1121
1122static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
1123static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
1124static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
1125static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
1126static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
1127static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
1128static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
1129static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
1130static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
1131static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1132static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1133static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1134static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1135static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1136static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1137static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1138static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1139static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
1140static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
1141static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
1142static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
1143static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
1144static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
1145static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
1146static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
1147static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
1148static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
1149static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);
1150
1151static ssize_t show_alarm_mask(struct device *dev,
1152                               struct device_attribute *attr, char *buf)
1153{
1154        struct adm1026_data *data = adm1026_update_device(dev);
1155        return sprintf(buf, "%ld\n", data->alarm_mask);
1156}
1157static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr,
1158                              const char *buf, size_t count)
1159{
1160        struct adm1026_data *data = dev_get_drvdata(dev);
1161        struct i2c_client *client = data->client;
1162        unsigned long mask;
1163        long val;
1164        int err;
1165
1166        err = kstrtol(buf, 10, &val);
1167        if (err)
1168                return err;
1169
1170        mutex_lock(&data->update_lock);
1171        data->alarm_mask = val & 0x7fffffff;
1172        mask = data->alarm_mask
1173                | (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1174        adm1026_write_value(client, ADM1026_REG_MASK1,
1175                mask & 0xff);
1176        mask >>= 8;
1177        adm1026_write_value(client, ADM1026_REG_MASK2,
1178                mask & 0xff);
1179        mask >>= 8;
1180        adm1026_write_value(client, ADM1026_REG_MASK3,
1181                mask & 0xff);
1182        mask >>= 8;
1183        adm1026_write_value(client, ADM1026_REG_MASK4,
1184                mask & 0xff);
1185        mutex_unlock(&data->update_lock);
1186        return count;
1187}
1188
1189static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
1190        set_alarm_mask);
1191
1192
1193static ssize_t show_gpio(struct device *dev, struct device_attribute *attr,
1194                         char *buf)
1195{
1196        struct adm1026_data *data = adm1026_update_device(dev);
1197        return sprintf(buf, "%ld\n", data->gpio);
1198}
1199static ssize_t set_gpio(struct device *dev, struct device_attribute *attr,
1200                        const char *buf, size_t count)
1201{
1202        struct adm1026_data *data = dev_get_drvdata(dev);
1203        struct i2c_client *client = data->client;
1204        long gpio;
1205        long val;
1206        int err;
1207
1208        err = kstrtol(buf, 10, &val);
1209        if (err)
1210                return err;
1211
1212        mutex_lock(&data->update_lock);
1213        data->gpio = val & 0x1ffff;
1214        gpio = data->gpio;
1215        adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1216        gpio >>= 8;
1217        adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1218        gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1219        adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1220        mutex_unlock(&data->update_lock);
1221        return count;
1222}
1223
1224static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);
1225
1226static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr,
1227                              char *buf)
1228{
1229        struct adm1026_data *data = adm1026_update_device(dev);
1230        return sprintf(buf, "%ld\n", data->gpio_mask);
1231}
1232static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr,
1233                             const char *buf, size_t count)
1234{
1235        struct adm1026_data *data = dev_get_drvdata(dev);
1236        struct i2c_client *client = data->client;
1237        long mask;
1238        long val;
1239        int err;
1240
1241        err = kstrtol(buf, 10, &val);
1242        if (err)
1243                return err;
1244
1245        mutex_lock(&data->update_lock);
1246        data->gpio_mask = val & 0x1ffff;
1247        mask = data->gpio_mask;
1248        adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1249        mask >>= 8;
1250        adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1251        mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1252        adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1253        mutex_unlock(&data->update_lock);
1254        return count;
1255}
1256
1257static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);
1258
1259static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr,
1260                            char *buf)
1261{
1262        struct adm1026_data *data = adm1026_update_device(dev);
1263        return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1264}
1265
1266static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr,
1267                           const char *buf, size_t count)
1268{
1269        struct adm1026_data *data = dev_get_drvdata(dev);
1270        struct i2c_client *client = data->client;
1271
1272        if (data->pwm1.enable == 1) {
1273                long val;
1274                int err;
1275
1276                err = kstrtol(buf, 10, &val);
1277                if (err)
1278                        return err;
1279
1280                mutex_lock(&data->update_lock);
1281                data->pwm1.pwm = PWM_TO_REG(val);
1282                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1283                mutex_unlock(&data->update_lock);
1284        }
1285        return count;
1286}
1287
1288static ssize_t show_auto_pwm_min(struct device *dev,
1289                                 struct device_attribute *attr, char *buf)
1290{
1291        struct adm1026_data *data = adm1026_update_device(dev);
1292        return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1293}
1294
1295static ssize_t set_auto_pwm_min(struct device *dev,
1296                                struct device_attribute *attr, const char *buf,
1297                                size_t count)
1298{
1299        struct adm1026_data *data = dev_get_drvdata(dev);
1300        struct i2c_client *client = data->client;
1301        unsigned long val;
1302        int err;
1303
1304        err = kstrtoul(buf, 10, &val);
1305        if (err)
1306                return err;
1307
1308        mutex_lock(&data->update_lock);
1309        data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
1310        if (data->pwm1.enable == 2) { /* apply immediately */
1311                data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1312                        PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1313                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1314        }
1315        mutex_unlock(&data->update_lock);
1316        return count;
1317}
1318
1319static ssize_t show_auto_pwm_max(struct device *dev,
1320                                 struct device_attribute *attr, char *buf)
1321{
1322        return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1323}
1324
1325static ssize_t show_pwm_enable(struct device *dev,
1326                               struct device_attribute *attr, char *buf)
1327{
1328        struct adm1026_data *data = adm1026_update_device(dev);
1329        return sprintf(buf, "%d\n", data->pwm1.enable);
1330}
1331
1332static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1333                              const char *buf, size_t count)
1334{
1335        struct adm1026_data *data = dev_get_drvdata(dev);
1336        struct i2c_client *client = data->client;
1337        int old_enable;
1338        unsigned long val;
1339        int err;
1340
1341        err = kstrtoul(buf, 10, &val);
1342        if (err)
1343                return err;
1344
1345        if (val >= 3)
1346                return -EINVAL;
1347
1348        mutex_lock(&data->update_lock);
1349        old_enable = data->pwm1.enable;
1350        data->pwm1.enable = val;
1351        data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1352                        | ((val == 2) ? CFG1_PWM_AFC : 0);
1353        adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1354        if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1355                data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1356                        PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1357                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1358        } else if (!((old_enable == 1) && (val == 1))) {
1359                /* set pwm to safe value */
1360                data->pwm1.pwm = 255;
1361                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1362        }
1363        mutex_unlock(&data->update_lock);
1364
1365        return count;
1366}
1367
1368/* enable PWM fan control */
1369static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1370static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1371static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1372static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1373        set_pwm_enable);
1374static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1375        set_pwm_enable);
1376static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1377        set_pwm_enable);
1378static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1379        show_auto_pwm_min, set_auto_pwm_min);
1380static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1381        show_auto_pwm_min, set_auto_pwm_min);
1382static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1383        show_auto_pwm_min, set_auto_pwm_min);
1384
1385static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1386static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1387static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1388
1389static struct attribute *adm1026_attributes[] = {
1390        &sensor_dev_attr_in0_input.dev_attr.attr,
1391        &sensor_dev_attr_in0_max.dev_attr.attr,
1392        &sensor_dev_attr_in0_min.dev_attr.attr,
1393        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1394        &sensor_dev_attr_in1_input.dev_attr.attr,
1395        &sensor_dev_attr_in1_max.dev_attr.attr,
1396        &sensor_dev_attr_in1_min.dev_attr.attr,
1397        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1398        &sensor_dev_attr_in2_input.dev_attr.attr,
1399        &sensor_dev_attr_in2_max.dev_attr.attr,
1400        &sensor_dev_attr_in2_min.dev_attr.attr,
1401        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1402        &sensor_dev_attr_in3_input.dev_attr.attr,
1403        &sensor_dev_attr_in3_max.dev_attr.attr,
1404        &sensor_dev_attr_in3_min.dev_attr.attr,
1405        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1406        &sensor_dev_attr_in4_input.dev_attr.attr,
1407        &sensor_dev_attr_in4_max.dev_attr.attr,
1408        &sensor_dev_attr_in4_min.dev_attr.attr,
1409        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1410        &sensor_dev_attr_in5_input.dev_attr.attr,
1411        &sensor_dev_attr_in5_max.dev_attr.attr,
1412        &sensor_dev_attr_in5_min.dev_attr.attr,
1413        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1414        &sensor_dev_attr_in6_input.dev_attr.attr,
1415        &sensor_dev_attr_in6_max.dev_attr.attr,
1416        &sensor_dev_attr_in6_min.dev_attr.attr,
1417        &sensor_dev_attr_in6_alarm.dev_attr.attr,
1418        &sensor_dev_attr_in7_input.dev_attr.attr,
1419        &sensor_dev_attr_in7_max.dev_attr.attr,
1420        &sensor_dev_attr_in7_min.dev_attr.attr,
1421        &sensor_dev_attr_in7_alarm.dev_attr.attr,
1422        &sensor_dev_attr_in10_input.dev_attr.attr,
1423        &sensor_dev_attr_in10_max.dev_attr.attr,
1424        &sensor_dev_attr_in10_min.dev_attr.attr,
1425        &sensor_dev_attr_in10_alarm.dev_attr.attr,
1426        &sensor_dev_attr_in11_input.dev_attr.attr,
1427        &sensor_dev_attr_in11_max.dev_attr.attr,
1428        &sensor_dev_attr_in11_min.dev_attr.attr,
1429        &sensor_dev_attr_in11_alarm.dev_attr.attr,
1430        &sensor_dev_attr_in12_input.dev_attr.attr,
1431        &sensor_dev_attr_in12_max.dev_attr.attr,
1432        &sensor_dev_attr_in12_min.dev_attr.attr,
1433        &sensor_dev_attr_in12_alarm.dev_attr.attr,
1434        &sensor_dev_attr_in13_input.dev_attr.attr,
1435        &sensor_dev_attr_in13_max.dev_attr.attr,
1436        &sensor_dev_attr_in13_min.dev_attr.attr,
1437        &sensor_dev_attr_in13_alarm.dev_attr.attr,
1438        &sensor_dev_attr_in14_input.dev_attr.attr,
1439        &sensor_dev_attr_in14_max.dev_attr.attr,
1440        &sensor_dev_attr_in14_min.dev_attr.attr,
1441        &sensor_dev_attr_in14_alarm.dev_attr.attr,
1442        &sensor_dev_attr_in15_input.dev_attr.attr,
1443        &sensor_dev_attr_in15_max.dev_attr.attr,
1444        &sensor_dev_attr_in15_min.dev_attr.attr,
1445        &sensor_dev_attr_in15_alarm.dev_attr.attr,
1446        &sensor_dev_attr_in16_input.dev_attr.attr,
1447        &sensor_dev_attr_in16_max.dev_attr.attr,
1448        &sensor_dev_attr_in16_min.dev_attr.attr,
1449        &sensor_dev_attr_in16_alarm.dev_attr.attr,
1450        &sensor_dev_attr_fan1_input.dev_attr.attr,
1451        &sensor_dev_attr_fan1_div.dev_attr.attr,
1452        &sensor_dev_attr_fan1_min.dev_attr.attr,
1453        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1454        &sensor_dev_attr_fan2_input.dev_attr.attr,
1455        &sensor_dev_attr_fan2_div.dev_attr.attr,
1456        &sensor_dev_attr_fan2_min.dev_attr.attr,
1457        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1458        &sensor_dev_attr_fan3_input.dev_attr.attr,
1459        &sensor_dev_attr_fan3_div.dev_attr.attr,
1460        &sensor_dev_attr_fan3_min.dev_attr.attr,
1461        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1462        &sensor_dev_attr_fan4_input.dev_attr.attr,
1463        &sensor_dev_attr_fan4_div.dev_attr.attr,
1464        &sensor_dev_attr_fan4_min.dev_attr.attr,
1465        &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1466        &sensor_dev_attr_fan5_input.dev_attr.attr,
1467        &sensor_dev_attr_fan5_div.dev_attr.attr,
1468        &sensor_dev_attr_fan5_min.dev_attr.attr,
1469        &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1470        &sensor_dev_attr_fan6_input.dev_attr.attr,
1471        &sensor_dev_attr_fan6_div.dev_attr.attr,
1472        &sensor_dev_attr_fan6_min.dev_attr.attr,
1473        &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1474        &sensor_dev_attr_fan7_input.dev_attr.attr,
1475        &sensor_dev_attr_fan7_div.dev_attr.attr,
1476        &sensor_dev_attr_fan7_min.dev_attr.attr,
1477        &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1478        &sensor_dev_attr_fan8_input.dev_attr.attr,
1479        &sensor_dev_attr_fan8_div.dev_attr.attr,
1480        &sensor_dev_attr_fan8_min.dev_attr.attr,
1481        &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1482        &sensor_dev_attr_temp1_input.dev_attr.attr,
1483        &sensor_dev_attr_temp1_max.dev_attr.attr,
1484        &sensor_dev_attr_temp1_min.dev_attr.attr,
1485        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1486        &sensor_dev_attr_temp2_input.dev_attr.attr,
1487        &sensor_dev_attr_temp2_max.dev_attr.attr,
1488        &sensor_dev_attr_temp2_min.dev_attr.attr,
1489        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1490        &sensor_dev_attr_temp1_offset.dev_attr.attr,
1491        &sensor_dev_attr_temp2_offset.dev_attr.attr,
1492        &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1493        &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1494        &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1495        &sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1496        &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1497        &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1498        &sensor_dev_attr_temp1_crit.dev_attr.attr,
1499        &sensor_dev_attr_temp2_crit.dev_attr.attr,
1500        &dev_attr_temp1_crit_enable.attr,
1501        &dev_attr_temp2_crit_enable.attr,
1502        &dev_attr_cpu0_vid.attr,
1503        &dev_attr_vrm.attr,
1504        &dev_attr_alarms.attr,
1505        &dev_attr_alarm_mask.attr,
1506        &dev_attr_gpio.attr,
1507        &dev_attr_gpio_mask.attr,
1508        &dev_attr_pwm1.attr,
1509        &dev_attr_pwm2.attr,
1510        &dev_attr_pwm3.attr,
1511        &dev_attr_pwm1_enable.attr,
1512        &dev_attr_pwm2_enable.attr,
1513        &dev_attr_pwm3_enable.attr,
1514        &dev_attr_temp1_auto_point1_pwm.attr,
1515        &dev_attr_temp2_auto_point1_pwm.attr,
1516        &dev_attr_temp1_auto_point2_pwm.attr,
1517        &dev_attr_temp2_auto_point2_pwm.attr,
1518        &dev_attr_analog_out.attr,
1519        NULL
1520};
1521
1522static const struct attribute_group adm1026_group = {
1523        .attrs = adm1026_attributes,
1524};
1525
1526static struct attribute *adm1026_attributes_temp3[] = {
1527        &sensor_dev_attr_temp3_input.dev_attr.attr,
1528        &sensor_dev_attr_temp3_max.dev_attr.attr,
1529        &sensor_dev_attr_temp3_min.dev_attr.attr,
1530        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1531        &sensor_dev_attr_temp3_offset.dev_attr.attr,
1532        &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1533        &sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1534        &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1535        &sensor_dev_attr_temp3_crit.dev_attr.attr,
1536        &dev_attr_temp3_crit_enable.attr,
1537        &dev_attr_temp3_auto_point1_pwm.attr,
1538        &dev_attr_temp3_auto_point2_pwm.attr,
1539        NULL
1540};
1541
1542static const struct attribute_group adm1026_group_temp3 = {
1543        .attrs = adm1026_attributes_temp3,
1544};
1545
1546static struct attribute *adm1026_attributes_in8_9[] = {
1547        &sensor_dev_attr_in8_input.dev_attr.attr,
1548        &sensor_dev_attr_in8_max.dev_attr.attr,
1549        &sensor_dev_attr_in8_min.dev_attr.attr,
1550        &sensor_dev_attr_in8_alarm.dev_attr.attr,
1551        &sensor_dev_attr_in9_input.dev_attr.attr,
1552        &sensor_dev_attr_in9_max.dev_attr.attr,
1553        &sensor_dev_attr_in9_min.dev_attr.attr,
1554        &sensor_dev_attr_in9_alarm.dev_attr.attr,
1555        NULL
1556};
1557
1558static const struct attribute_group adm1026_group_in8_9 = {
1559        .attrs = adm1026_attributes_in8_9,
1560};
1561
1562/* Return 0 if detection is successful, -ENODEV otherwise */
1563static int adm1026_detect(struct i2c_client *client,
1564                          struct i2c_board_info *info)
1565{
1566        struct i2c_adapter *adapter = client->adapter;
1567        int address = client->addr;
1568        int company, verstep;
1569
1570        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1571                /* We need to be able to do byte I/O */
1572                return -ENODEV;
1573        }
1574
1575        /* Now, we do the remaining detection. */
1576
1577        company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1578        verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1579
1580        dev_dbg(&adapter->dev,
1581                "Detecting device at %d,0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1582                i2c_adapter_id(client->adapter), client->addr,
1583                company, verstep);
1584
1585        /* Determine the chip type. */
1586        dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1587                i2c_adapter_id(adapter), address);
1588        if (company == ADM1026_COMPANY_ANALOG_DEV
1589            && verstep == ADM1026_VERSTEP_ADM1026) {
1590                /* Analog Devices ADM1026 */
1591        } else if (company == ADM1026_COMPANY_ANALOG_DEV
1592                && (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1593                dev_err(&adapter->dev,
1594                        "Unrecognized stepping 0x%02x. Defaulting to ADM1026.\n",
1595                        verstep);
1596        } else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1597                dev_err(&adapter->dev,
1598                        "Found version/stepping 0x%02x. Assuming generic ADM1026.\n",
1599                        verstep);
1600        } else {
1601                dev_dbg(&adapter->dev, "Autodetection failed\n");
1602                /* Not an ADM1026... */
1603                return -ENODEV;
1604        }
1605
1606        strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1607
1608        return 0;
1609}
1610
1611static void adm1026_print_gpio(struct i2c_client *client)
1612{
1613        struct adm1026_data *data = i2c_get_clientdata(client);
1614        int i;
1615
1616        dev_dbg(&client->dev, "GPIO config is:\n");
1617        for (i = 0; i <= 7; ++i) {
1618                if (data->config2 & (1 << i)) {
1619                        dev_dbg(&client->dev, "\t%sGP%s%d\n",
1620                                data->gpio_config[i] & 0x02 ? "" : "!",
1621                                data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1622                                i);
1623                } else {
1624                        dev_dbg(&client->dev, "\tFAN%d\n", i);
1625                }
1626        }
1627        for (i = 8; i <= 15; ++i) {
1628                dev_dbg(&client->dev, "\t%sGP%s%d\n",
1629                        data->gpio_config[i] & 0x02 ? "" : "!",
1630                        data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1631                        i);
1632        }
1633        if (data->config3 & CFG3_GPIO16_ENABLE) {
1634                dev_dbg(&client->dev, "\t%sGP%s16\n",
1635                        data->gpio_config[16] & 0x02 ? "" : "!",
1636                        data->gpio_config[16] & 0x01 ? "OUT" : "IN");
1637        } else {
1638                /* GPIO16 is THERM */
1639                dev_dbg(&client->dev, "\tTHERM\n");
1640        }
1641}
1642
1643static void adm1026_fixup_gpio(struct i2c_client *client)
1644{
1645        struct adm1026_data *data = i2c_get_clientdata(client);
1646        int i;
1647        int value;
1648
1649        /* Make the changes requested. */
1650        /*
1651         * We may need to unlock/stop monitoring or soft-reset the
1652         *    chip before we can make changes.  This hasn't been
1653         *    tested much.  FIXME
1654         */
1655
1656        /* Make outputs */
1657        for (i = 0; i <= 16; ++i) {
1658                if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
1659                        data->gpio_config[gpio_output[i]] |= 0x01;
1660                /* if GPIO0-7 is output, it isn't a FAN tach */
1661                if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
1662                        data->config2 |= 1 << gpio_output[i];
1663        }
1664
1665        /* Input overrides output */
1666        for (i = 0; i <= 16; ++i) {
1667                if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
1668                        data->gpio_config[gpio_input[i]] &= ~0x01;
1669                /* if GPIO0-7 is input, it isn't a FAN tach */
1670                if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
1671                        data->config2 |= 1 << gpio_input[i];
1672        }
1673
1674        /* Inverted */
1675        for (i = 0; i <= 16; ++i) {
1676                if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
1677                        data->gpio_config[gpio_inverted[i]] &= ~0x02;
1678        }
1679
1680        /* Normal overrides inverted */
1681        for (i = 0; i <= 16; ++i) {
1682                if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
1683                        data->gpio_config[gpio_normal[i]] |= 0x02;
1684        }
1685
1686        /* Fan overrides input and output */
1687        for (i = 0; i <= 7; ++i) {
1688                if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
1689                        data->config2 &= ~(1 << gpio_fan[i]);
1690        }
1691
1692        /* Write new configs to registers */
1693        adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
1694        data->config3 = (data->config3 & 0x3f)
1695                        | ((data->gpio_config[16] & 0x03) << 6);
1696        adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
1697        for (i = 15, value = 0; i >= 0; --i) {
1698                value <<= 2;
1699                value |= data->gpio_config[i] & 0x03;
1700                if ((i & 0x03) == 0) {
1701                        adm1026_write_value(client,
1702                                        ADM1026_REG_GPIO_CFG_0_3 + i/4,
1703                                        value);
1704                        value = 0;
1705                }
1706        }
1707
1708        /* Print the new config */
1709        adm1026_print_gpio(client);
1710}
1711
1712static void adm1026_init_client(struct i2c_client *client)
1713{
1714        int value, i;
1715        struct adm1026_data *data = i2c_get_clientdata(client);
1716
1717        dev_dbg(&client->dev, "Initializing device\n");
1718        /* Read chip config */
1719        data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1720        data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
1721        data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
1722
1723        /* Inform user of chip config */
1724        dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
1725                data->config1);
1726        if ((data->config1 & CFG1_MONITOR) == 0) {
1727                dev_dbg(&client->dev,
1728                        "Monitoring not currently enabled.\n");
1729        }
1730        if (data->config1 & CFG1_INT_ENABLE) {
1731                dev_dbg(&client->dev,
1732                        "SMBALERT interrupts are enabled.\n");
1733        }
1734        if (data->config1 & CFG1_AIN8_9) {
1735                dev_dbg(&client->dev,
1736                        "in8 and in9 enabled. temp3 disabled.\n");
1737        } else {
1738                dev_dbg(&client->dev,
1739                        "temp3 enabled.  in8 and in9 disabled.\n");
1740        }
1741        if (data->config1 & CFG1_THERM_HOT) {
1742                dev_dbg(&client->dev,
1743                        "Automatic THERM, PWM, and temp limits enabled.\n");
1744        }
1745
1746        if (data->config3 & CFG3_GPIO16_ENABLE) {
1747                dev_dbg(&client->dev,
1748                        "GPIO16 enabled.  THERM pin disabled.\n");
1749        } else {
1750                dev_dbg(&client->dev,
1751                        "THERM pin enabled.  GPIO16 disabled.\n");
1752        }
1753        if (data->config3 & CFG3_VREF_250)
1754                dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
1755        else
1756                dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
1757        /* Read and pick apart the existing GPIO configuration */
1758        value = 0;
1759        for (i = 0; i <= 15; ++i) {
1760                if ((i & 0x03) == 0) {
1761                        value = adm1026_read_value(client,
1762                                        ADM1026_REG_GPIO_CFG_0_3 + i / 4);
1763                }
1764                data->gpio_config[i] = value & 0x03;
1765                value >>= 2;
1766        }
1767        data->gpio_config[16] = (data->config3 >> 6) & 0x03;
1768
1769        /* ... and then print it */
1770        adm1026_print_gpio(client);
1771
1772        /*
1773         * If the user asks us to reprogram the GPIO config, then
1774         * do it now.
1775         */
1776        if (gpio_input[0] != -1 || gpio_output[0] != -1
1777                || gpio_inverted[0] != -1 || gpio_normal[0] != -1
1778                || gpio_fan[0] != -1) {
1779                adm1026_fixup_gpio(client);
1780        }
1781
1782        /*
1783         * WE INTENTIONALLY make no changes to the limits,
1784         *   offsets, pwms, fans and zones.  If they were
1785         *   configured, we don't want to mess with them.
1786         *   If they weren't, the default is 100% PWM, no
1787         *   control and will suffice until 'sensors -s'
1788         *   can be run by the user.  We DO set the default
1789         *   value for pwm1.auto_pwm_min to its maximum
1790         *   so that enabling automatic pwm fan control
1791         *   without first setting a value for pwm1.auto_pwm_min
1792         *   will not result in potentially dangerous fan speed decrease.
1793         */
1794        data->pwm1.auto_pwm_min = 255;
1795        /* Start monitoring */
1796        value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1797        /* Set MONITOR, clear interrupt acknowledge and s/w reset */
1798        value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
1799        dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1800        data->config1 = value;
1801        adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
1802
1803        /* initialize fan_div[] to hardware defaults */
1804        value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
1805                (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
1806        for (i = 0; i <= 7; ++i) {
1807                data->fan_div[i] = DIV_FROM_REG(value & 0x03);
1808                value >>= 2;
1809        }
1810}
1811
1812static int adm1026_probe(struct i2c_client *client,
1813                         const struct i2c_device_id *id)
1814{
1815        struct device *dev = &client->dev;
1816        struct device *hwmon_dev;
1817        struct adm1026_data *data;
1818
1819        data = devm_kzalloc(dev, sizeof(struct adm1026_data), GFP_KERNEL);
1820        if (!data)
1821                return -ENOMEM;
1822
1823        i2c_set_clientdata(client, data);
1824        data->client = client;
1825        mutex_init(&data->update_lock);
1826
1827        /* Set the VRM version */
1828        data->vrm = vid_which_vrm();
1829
1830        /* Initialize the ADM1026 chip */
1831        adm1026_init_client(client);
1832
1833        /* sysfs hooks */
1834        data->groups[0] = &adm1026_group;
1835        if (data->config1 & CFG1_AIN8_9)
1836                data->groups[1] = &adm1026_group_in8_9;
1837        else
1838                data->groups[1] = &adm1026_group_temp3;
1839
1840        hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1841                                                           data, data->groups);
1842        return PTR_ERR_OR_ZERO(hwmon_dev);
1843}
1844
1845static const struct i2c_device_id adm1026_id[] = {
1846        { "adm1026", 0 },
1847        { }
1848};
1849MODULE_DEVICE_TABLE(i2c, adm1026_id);
1850
1851static struct i2c_driver adm1026_driver = {
1852        .class          = I2C_CLASS_HWMON,
1853        .driver = {
1854                .name   = "adm1026",
1855        },
1856        .probe          = adm1026_probe,
1857        .id_table       = adm1026_id,
1858        .detect         = adm1026_detect,
1859        .address_list   = normal_i2c,
1860};
1861
1862module_i2c_driver(adm1026_driver);
1863
1864MODULE_LICENSE("GPL");
1865MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1866              "Justin Thiessen <jthiessen@penguincomputing.com>");
1867MODULE_DESCRIPTION("ADM1026 driver");
1868