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, "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/*
  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)  (clamp_val(SCALE(val, adm1026_scaling[n], 192),\
 201        0, 255))
 202#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
 203
 204/*
 205 * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
 206 *   and we assume a 2 pulse-per-rev fan tach signal
 207 *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
 208 */
 209#define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
 210                                clamp_val(1350000 / ((val) * (div)), \
 211                                              1, 254))
 212#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
 213                                1350000 / ((val) * (div)))
 214#define DIV_FROM_REG(val) (1 << (val))
 215#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
 216
 217/* Temperature is reported in 1 degC increments */
 218#define TEMP_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
 219                                        / 1000, -127, 127))
 220#define TEMP_FROM_REG(val) ((val) * 1000)
 221#define OFFSET_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
 222                                          / 1000, -127, 127))
 223#define OFFSET_FROM_REG(val) ((val) * 1000)
 224
 225#define PWM_TO_REG(val) (clamp_val(val, 0, 255))
 226#define PWM_FROM_REG(val) (val)
 227
 228#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
 229#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
 230
 231/*
 232 * Analog output is a voltage, and scaled to millivolts.  The datasheet
 233 *   indicates that the DAC could be used to drive the fans, but in our
 234 *   example board (Arima HDAMA) it isn't connected to the fans at all.
 235 */
 236#define DAC_TO_REG(val) (clamp_val(((((val) * 255) + 500) / 2500), 0, 255))
 237#define DAC_FROM_REG(val) (((val) * 2500) / 255)
 238
 239/*
 240 * Chip sampling rates
 241 *
 242 * Some sensors are not updated more frequently than once per second
 243 *    so it doesn't make sense to read them more often than that.
 244 *    We cache the results and return the saved data if the driver
 245 *    is called again before a second has elapsed.
 246 *
 247 * Also, there is significant configuration data for this chip
 248 *    So, we keep the config data up to date in the cache
 249 *    when it is written and only sample it once every 5 *minutes*
 250 */
 251#define ADM1026_DATA_INTERVAL           (1 * HZ)
 252#define ADM1026_CONFIG_INTERVAL         (5 * 60 * HZ)
 253
 254/*
 255 * We allow for multiple chips in a single system.
 256 *
 257 * For each registered ADM1026, we need to keep state information
 258 * at client->data. The adm1026_data structure is dynamically
 259 * allocated, when a new client structure is allocated.
 260 */
 261
 262struct pwm_data {
 263        u8 pwm;
 264        u8 enable;
 265        u8 auto_pwm_min;
 266};
 267
 268struct adm1026_data {
 269        struct device *hwmon_dev;
 270
 271        struct mutex update_lock;
 272        int valid;              /* !=0 if following fields are valid */
 273        unsigned long last_reading;     /* In jiffies */
 274        unsigned long last_config;      /* In jiffies */
 275
 276        u8 in[17];              /* Register value */
 277        u8 in_max[17];          /* Register value */
 278        u8 in_min[17];          /* Register value */
 279        s8 temp[3];             /* Register value */
 280        s8 temp_min[3];         /* Register value */
 281        s8 temp_max[3];         /* Register value */
 282        s8 temp_tmin[3];        /* Register value */
 283        s8 temp_crit[3];        /* Register value */
 284        s8 temp_offset[3];      /* Register value */
 285        u8 fan[8];              /* Register value */
 286        u8 fan_min[8];          /* Register value */
 287        u8 fan_div[8];          /* Decoded value */
 288        struct pwm_data pwm1;   /* Pwm control values */
 289        u8 vrm;                 /* VRM version */
 290        u8 analog_out;          /* Register value (DAC) */
 291        long alarms;            /* Register encoding, combined */
 292        long alarm_mask;        /* Register encoding, combined */
 293        long gpio;              /* Register encoding, combined */
 294        long gpio_mask;         /* Register encoding, combined */
 295        u8 gpio_config[17];     /* Decoded value */
 296        u8 config1;             /* Register value */
 297        u8 config2;             /* Register value */
 298        u8 config3;             /* Register value */
 299};
 300
 301static int adm1026_probe(struct i2c_client *client,
 302                         const struct i2c_device_id *id);
 303static int adm1026_detect(struct i2c_client *client,
 304                          struct i2c_board_info *info);
 305static int adm1026_remove(struct i2c_client *client);
 306static int adm1026_read_value(struct i2c_client *client, u8 reg);
 307static int adm1026_write_value(struct i2c_client *client, u8 reg, int value);
 308static void adm1026_print_gpio(struct i2c_client *client);
 309static void adm1026_fixup_gpio(struct i2c_client *client);
 310static struct adm1026_data *adm1026_update_device(struct device *dev);
 311static void adm1026_init_client(struct i2c_client *client);
 312
 313
 314static const struct i2c_device_id adm1026_id[] = {
 315        { "adm1026", 0 },
 316        { }
 317};
 318MODULE_DEVICE_TABLE(i2c, adm1026_id);
 319
 320static struct i2c_driver adm1026_driver = {
 321        .class          = I2C_CLASS_HWMON,
 322        .driver = {
 323                .name   = "adm1026",
 324        },
 325        .probe          = adm1026_probe,
 326        .remove         = adm1026_remove,
 327        .id_table       = adm1026_id,
 328        .detect         = adm1026_detect,
 329        .address_list   = normal_i2c,
 330};
 331
 332static int adm1026_read_value(struct i2c_client *client, u8 reg)
 333{
 334        int res;
 335
 336        if (reg < 0x80) {
 337                /* "RAM" locations */
 338                res = i2c_smbus_read_byte_data(client, reg) & 0xff;
 339        } else {
 340                /* EEPROM, do nothing */
 341                res = 0;
 342        }
 343        return res;
 344}
 345
 346static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 347{
 348        int res;
 349
 350        if (reg < 0x80) {
 351                /* "RAM" locations */
 352                res = i2c_smbus_write_byte_data(client, reg, value);
 353        } else {
 354                /* EEPROM, do nothing */
 355                res = 0;
 356        }
 357        return res;
 358}
 359
 360static void adm1026_init_client(struct i2c_client *client)
 361{
 362        int value, i;
 363        struct adm1026_data *data = i2c_get_clientdata(client);
 364
 365        dev_dbg(&client->dev, "Initializing device\n");
 366        /* Read chip config */
 367        data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
 368        data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
 369        data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
 370
 371        /* Inform user of chip config */
 372        dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
 373                data->config1);
 374        if ((data->config1 & CFG1_MONITOR) == 0) {
 375                dev_dbg(&client->dev, "Monitoring not currently "
 376                        "enabled.\n");
 377        }
 378        if (data->config1 & CFG1_INT_ENABLE) {
 379                dev_dbg(&client->dev, "SMBALERT interrupts are "
 380                        "enabled.\n");
 381        }
 382        if (data->config1 & CFG1_AIN8_9) {
 383                dev_dbg(&client->dev, "in8 and in9 enabled. "
 384                        "temp3 disabled.\n");
 385        } else {
 386                dev_dbg(&client->dev, "temp3 enabled.  in8 and "
 387                        "in9 disabled.\n");
 388        }
 389        if (data->config1 & CFG1_THERM_HOT) {
 390                dev_dbg(&client->dev, "Automatic THERM, PWM, "
 391                        "and temp limits enabled.\n");
 392        }
 393
 394        if (data->config3 & CFG3_GPIO16_ENABLE) {
 395                dev_dbg(&client->dev, "GPIO16 enabled.  THERM "
 396                        "pin disabled.\n");
 397        } else {
 398                dev_dbg(&client->dev, "THERM pin enabled.  "
 399                        "GPIO16 disabled.\n");
 400        }
 401        if (data->config3 & CFG3_VREF_250)
 402                dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
 403        else
 404                dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
 405        /* Read and pick apart the existing GPIO configuration */
 406        value = 0;
 407        for (i = 0; i <= 15; ++i) {
 408                if ((i & 0x03) == 0) {
 409                        value = adm1026_read_value(client,
 410                                        ADM1026_REG_GPIO_CFG_0_3 + i / 4);
 411                }
 412                data->gpio_config[i] = value & 0x03;
 413                value >>= 2;
 414        }
 415        data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 416
 417        /* ... and then print it */
 418        adm1026_print_gpio(client);
 419
 420        /*
 421         * If the user asks us to reprogram the GPIO config, then
 422         * do it now.
 423         */
 424        if (gpio_input[0] != -1 || gpio_output[0] != -1
 425                || gpio_inverted[0] != -1 || gpio_normal[0] != -1
 426                || gpio_fan[0] != -1) {
 427                adm1026_fixup_gpio(client);
 428        }
 429
 430        /*
 431         * WE INTENTIONALLY make no changes to the limits,
 432         *   offsets, pwms, fans and zones.  If they were
 433         *   configured, we don't want to mess with them.
 434         *   If they weren't, the default is 100% PWM, no
 435         *   control and will suffice until 'sensors -s'
 436         *   can be run by the user.  We DO set the default
 437         *   value for pwm1.auto_pwm_min to its maximum
 438         *   so that enabling automatic pwm fan control
 439         *   without first setting a value for pwm1.auto_pwm_min
 440         *   will not result in potentially dangerous fan speed decrease.
 441         */
 442        data->pwm1.auto_pwm_min = 255;
 443        /* Start monitoring */
 444        value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
 445        /* Set MONITOR, clear interrupt acknowledge and s/w reset */
 446        value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
 447        dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
 448        data->config1 = value;
 449        adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
 450
 451        /* initialize fan_div[] to hardware defaults */
 452        value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
 453                (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
 454        for (i = 0; i <= 7; ++i) {
 455                data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 456                value >>= 2;
 457        }
 458}
 459
 460static void adm1026_print_gpio(struct i2c_client *client)
 461{
 462        struct adm1026_data *data = i2c_get_clientdata(client);
 463        int i;
 464
 465        dev_dbg(&client->dev, "GPIO config is:\n");
 466        for (i = 0; i <= 7; ++i) {
 467                if (data->config2 & (1 << i)) {
 468                        dev_dbg(&client->dev, "\t%sGP%s%d\n",
 469                                data->gpio_config[i] & 0x02 ? "" : "!",
 470                                data->gpio_config[i] & 0x01 ? "OUT" : "IN",
 471                                i);
 472                } else {
 473                        dev_dbg(&client->dev, "\tFAN%d\n", i);
 474                }
 475        }
 476        for (i = 8; i <= 15; ++i) {
 477                dev_dbg(&client->dev, "\t%sGP%s%d\n",
 478                        data->gpio_config[i] & 0x02 ? "" : "!",
 479                        data->gpio_config[i] & 0x01 ? "OUT" : "IN",
 480                        i);
 481        }
 482        if (data->config3 & CFG3_GPIO16_ENABLE) {
 483                dev_dbg(&client->dev, "\t%sGP%s16\n",
 484                        data->gpio_config[16] & 0x02 ? "" : "!",
 485                        data->gpio_config[16] & 0x01 ? "OUT" : "IN");
 486        } else {
 487                /* GPIO16 is THERM */
 488                dev_dbg(&client->dev, "\tTHERM\n");
 489        }
 490}
 491
 492static void adm1026_fixup_gpio(struct i2c_client *client)
 493{
 494        struct adm1026_data *data = i2c_get_clientdata(client);
 495        int i;
 496        int value;
 497
 498        /* Make the changes requested. */
 499        /*
 500         * We may need to unlock/stop monitoring or soft-reset the
 501         *    chip before we can make changes.  This hasn't been
 502         *    tested much.  FIXME
 503         */
 504
 505        /* Make outputs */
 506        for (i = 0; i <= 16; ++i) {
 507                if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
 508                        data->gpio_config[gpio_output[i]] |= 0x01;
 509                /* if GPIO0-7 is output, it isn't a FAN tach */
 510                if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
 511                        data->config2 |= 1 << gpio_output[i];
 512        }
 513
 514        /* Input overrides output */
 515        for (i = 0; i <= 16; ++i) {
 516                if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
 517                        data->gpio_config[gpio_input[i]] &= ~0x01;
 518                /* if GPIO0-7 is input, it isn't a FAN tach */
 519                if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
 520                        data->config2 |= 1 << gpio_input[i];
 521        }
 522
 523        /* Inverted */
 524        for (i = 0; i <= 16; ++i) {
 525                if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
 526                        data->gpio_config[gpio_inverted[i]] &= ~0x02;
 527        }
 528
 529        /* Normal overrides inverted */
 530        for (i = 0; i <= 16; ++i) {
 531                if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
 532                        data->gpio_config[gpio_normal[i]] |= 0x02;
 533        }
 534
 535        /* Fan overrides input and output */
 536        for (i = 0; i <= 7; ++i) {
 537                if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
 538                        data->config2 &= ~(1 << gpio_fan[i]);
 539        }
 540
 541        /* Write new configs to registers */
 542        adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
 543        data->config3 = (data->config3 & 0x3f)
 544                        | ((data->gpio_config[16] & 0x03) << 6);
 545        adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
 546        for (i = 15, value = 0; i >= 0; --i) {
 547                value <<= 2;
 548                value |= data->gpio_config[i] & 0x03;
 549                if ((i & 0x03) == 0) {
 550                        adm1026_write_value(client,
 551                                        ADM1026_REG_GPIO_CFG_0_3 + i/4,
 552                                        value);
 553                        value = 0;
 554                }
 555        }
 556
 557        /* Print the new config */
 558        adm1026_print_gpio(client);
 559}
 560
 561
 562static struct adm1026_data *adm1026_update_device(struct device *dev)
 563{
 564        struct i2c_client *client = to_i2c_client(dev);
 565        struct adm1026_data *data = i2c_get_clientdata(client);
 566        int i;
 567        long value, alarms, gpio;
 568
 569        mutex_lock(&data->update_lock);
 570        if (!data->valid
 571            || time_after(jiffies,
 572                          data->last_reading + ADM1026_DATA_INTERVAL)) {
 573                /* Things that change quickly */
 574                dev_dbg(&client->dev, "Reading sensor values\n");
 575                for (i = 0; i <= 16; ++i) {
 576                        data->in[i] =
 577                            adm1026_read_value(client, ADM1026_REG_IN[i]);
 578                }
 579
 580                for (i = 0; i <= 7; ++i) {
 581                        data->fan[i] =
 582                            adm1026_read_value(client, ADM1026_REG_FAN(i));
 583                }
 584
 585                for (i = 0; i <= 2; ++i) {
 586                        /*
 587                         * NOTE: temp[] is s8 and we assume 2's complement
 588                         *   "conversion" in the assignment
 589                         */
 590                        data->temp[i] =
 591                            adm1026_read_value(client, ADM1026_REG_TEMP[i]);
 592                }
 593
 594                data->pwm1.pwm = adm1026_read_value(client,
 595                        ADM1026_REG_PWM);
 596                data->analog_out = adm1026_read_value(client,
 597                        ADM1026_REG_DAC);
 598                /* GPIO16 is MSbit of alarms, move it to gpio */
 599                alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
 600                gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 601                alarms &= 0x7f;
 602                alarms <<= 8;
 603                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
 604                alarms <<= 8;
 605                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
 606                alarms <<= 8;
 607                alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
 608                data->alarms = alarms;
 609
 610                /* Read the GPIO values */
 611                gpio |= adm1026_read_value(client,
 612                        ADM1026_REG_GPIO_STATUS_8_15);
 613                gpio <<= 8;
 614                gpio |= adm1026_read_value(client,
 615                        ADM1026_REG_GPIO_STATUS_0_7);
 616                data->gpio = gpio;
 617
 618                data->last_reading = jiffies;
 619        }; /* last_reading */
 620
 621        if (!data->valid ||
 622            time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
 623                /* Things that don't change often */
 624                dev_dbg(&client->dev, "Reading config values\n");
 625                for (i = 0; i <= 16; ++i) {
 626                        data->in_min[i] = adm1026_read_value(client,
 627                                ADM1026_REG_IN_MIN[i]);
 628                        data->in_max[i] = adm1026_read_value(client,
 629                                ADM1026_REG_IN_MAX[i]);
 630                }
 631
 632                value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
 633                        | (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
 634                        << 8);
 635                for (i = 0; i <= 7; ++i) {
 636                        data->fan_min[i] = adm1026_read_value(client,
 637                                ADM1026_REG_FAN_MIN(i));
 638                        data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 639                        value >>= 2;
 640                }
 641
 642                for (i = 0; i <= 2; ++i) {
 643                        /*
 644                         * NOTE: temp_xxx[] are s8 and we assume 2's
 645                         *    complement "conversion" in the assignment
 646                         */
 647                        data->temp_min[i] = adm1026_read_value(client,
 648                                ADM1026_REG_TEMP_MIN[i]);
 649                        data->temp_max[i] = adm1026_read_value(client,
 650                                ADM1026_REG_TEMP_MAX[i]);
 651                        data->temp_tmin[i] = adm1026_read_value(client,
 652                                ADM1026_REG_TEMP_TMIN[i]);
 653                        data->temp_crit[i] = adm1026_read_value(client,
 654                                ADM1026_REG_TEMP_THERM[i]);
 655                        data->temp_offset[i] = adm1026_read_value(client,
 656                                ADM1026_REG_TEMP_OFFSET[i]);
 657                }
 658
 659                /* Read the STATUS/alarm masks */
 660                alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
 661                gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 662                alarms = (alarms & 0x7f) << 8;
 663                alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
 664                alarms <<= 8;
 665                alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
 666                alarms <<= 8;
 667                alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
 668                data->alarm_mask = alarms;
 669
 670                /* Read the GPIO values */
 671                gpio |= adm1026_read_value(client,
 672                        ADM1026_REG_GPIO_MASK_8_15);
 673                gpio <<= 8;
 674                gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
 675                data->gpio_mask = gpio;
 676
 677                /* Read various values from CONFIG1 */
 678                data->config1 = adm1026_read_value(client,
 679                        ADM1026_REG_CONFIG1);
 680                if (data->config1 & CFG1_PWM_AFC) {
 681                        data->pwm1.enable = 2;
 682                        data->pwm1.auto_pwm_min =
 683                                PWM_MIN_FROM_REG(data->pwm1.pwm);
 684                }
 685                /* Read the GPIO config */
 686                data->config2 = adm1026_read_value(client,
 687                        ADM1026_REG_CONFIG2);
 688                data->config3 = adm1026_read_value(client,
 689                        ADM1026_REG_CONFIG3);
 690                data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 691
 692                value = 0;
 693                for (i = 0; i <= 15; ++i) {
 694                        if ((i & 0x03) == 0) {
 695                                value = adm1026_read_value(client,
 696                                            ADM1026_REG_GPIO_CFG_0_3 + i/4);
 697                        }
 698                        data->gpio_config[i] = value & 0x03;
 699                        value >>= 2;
 700                }
 701
 702                data->last_config = jiffies;
 703        }; /* last_config */
 704
 705        data->valid = 1;
 706        mutex_unlock(&data->update_lock);
 707        return data;
 708}
 709
 710static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 711                char *buf)
 712{
 713        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 714        int nr = sensor_attr->index;
 715        struct adm1026_data *data = adm1026_update_device(dev);
 716        return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
 717}
 718static ssize_t show_in_min(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", INS_FROM_REG(nr, data->in_min[nr]));
 725}
 726static ssize_t set_in_min(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 i2c_client *client = to_i2c_client(dev);
 732        struct adm1026_data *data = i2c_get_clientdata(client);
 733        long val;
 734        int err;
 735
 736        err = kstrtol(buf, 10, &val);
 737        if (err)
 738                return err;
 739
 740        mutex_lock(&data->update_lock);
 741        data->in_min[nr] = INS_TO_REG(nr, val);
 742        adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
 743        mutex_unlock(&data->update_lock);
 744        return count;
 745}
 746static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
 747                char *buf)
 748{
 749        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 750        int nr = sensor_attr->index;
 751        struct adm1026_data *data = adm1026_update_device(dev);
 752        return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
 753}
 754static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 755                const char *buf, size_t count)
 756{
 757        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 758        int nr = sensor_attr->index;
 759        struct i2c_client *client = to_i2c_client(dev);
 760        struct adm1026_data *data = i2c_get_clientdata(client);
 761        long val;
 762        int err;
 763
 764        err = kstrtol(buf, 10, &val);
 765        if (err)
 766                return err;
 767
 768        mutex_lock(&data->update_lock);
 769        data->in_max[nr] = INS_TO_REG(nr, val);
 770        adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
 771        mutex_unlock(&data->update_lock);
 772        return count;
 773}
 774
 775#define in_reg(offset)                                          \
 776static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
 777                NULL, offset);                                  \
 778static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,  \
 779                show_in_min, set_in_min, offset);               \
 780static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,  \
 781                show_in_max, set_in_max, offset);
 782
 783
 784in_reg(0);
 785in_reg(1);
 786in_reg(2);
 787in_reg(3);
 788in_reg(4);
 789in_reg(5);
 790in_reg(6);
 791in_reg(7);
 792in_reg(8);
 793in_reg(9);
 794in_reg(10);
 795in_reg(11);
 796in_reg(12);
 797in_reg(13);
 798in_reg(14);
 799in_reg(15);
 800
 801static ssize_t show_in16(struct device *dev, struct device_attribute *attr,
 802                         char *buf)
 803{
 804        struct adm1026_data *data = adm1026_update_device(dev);
 805        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
 806                NEG12_OFFSET);
 807}
 808static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr,
 809                             char *buf)
 810{
 811        struct adm1026_data *data = adm1026_update_device(dev);
 812        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
 813                - NEG12_OFFSET);
 814}
 815static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
 816                            const char *buf, size_t count)
 817{
 818        struct i2c_client *client = to_i2c_client(dev);
 819        struct adm1026_data *data = i2c_get_clientdata(client);
 820        long val;
 821        int err;
 822
 823        err = kstrtol(buf, 10, &val);
 824        if (err)
 825                return err;
 826
 827        mutex_lock(&data->update_lock);
 828        data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET);
 829        adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
 830        mutex_unlock(&data->update_lock);
 831        return count;
 832}
 833static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr,
 834                             char *buf)
 835{
 836        struct adm1026_data *data = adm1026_update_device(dev);
 837        return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
 838                        - NEG12_OFFSET);
 839}
 840static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
 841                            const char *buf, size_t count)
 842{
 843        struct i2c_client *client = to_i2c_client(dev);
 844        struct adm1026_data *data = i2c_get_clientdata(client);
 845        long val;
 846        int err;
 847
 848        err = kstrtol(buf, 10, &val);
 849        if (err)
 850                return err;
 851
 852        mutex_lock(&data->update_lock);
 853        data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET);
 854        adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
 855        mutex_unlock(&data->update_lock);
 856        return count;
 857}
 858
 859static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
 860static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min,
 861                          set_in16_min, 16);
 862static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max,
 863                          set_in16_max, 16);
 864
 865
 866/* Now add fan read/write functions */
 867
 868static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 869                char *buf)
 870{
 871        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 872        int nr = sensor_attr->index;
 873        struct adm1026_data *data = adm1026_update_device(dev);
 874        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
 875                data->fan_div[nr]));
 876}
 877static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
 878                char *buf)
 879{
 880        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 881        int nr = sensor_attr->index;
 882        struct adm1026_data *data = adm1026_update_device(dev);
 883        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
 884                data->fan_div[nr]));
 885}
 886static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 887                const char *buf, size_t count)
 888{
 889        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 890        int nr = sensor_attr->index;
 891        struct i2c_client *client = to_i2c_client(dev);
 892        struct adm1026_data *data = i2c_get_clientdata(client);
 893        long val;
 894        int err;
 895
 896        err = kstrtol(buf, 10, &val);
 897        if (err)
 898                return err;
 899
 900        mutex_lock(&data->update_lock);
 901        data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
 902        adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
 903                data->fan_min[nr]);
 904        mutex_unlock(&data->update_lock);
 905        return count;
 906}
 907
 908#define fan_offset(offset)                                              \
 909static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
 910                offset - 1);                                            \
 911static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,         \
 912                show_fan_min, set_fan_min, offset - 1);
 913
 914fan_offset(1);
 915fan_offset(2);
 916fan_offset(3);
 917fan_offset(4);
 918fan_offset(5);
 919fan_offset(6);
 920fan_offset(7);
 921fan_offset(8);
 922
 923/* Adjust fan_min to account for new fan divisor */
 924static void fixup_fan_min(struct device *dev, int fan, int old_div)
 925{
 926        struct i2c_client *client = to_i2c_client(dev);
 927        struct adm1026_data *data = i2c_get_clientdata(client);
 928        int new_min;
 929        int new_div = data->fan_div[fan];
 930
 931        /* 0 and 0xff are special.  Don't adjust them */
 932        if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
 933                return;
 934
 935        new_min = data->fan_min[fan] * old_div / new_div;
 936        new_min = clamp_val(new_min, 1, 254);
 937        data->fan_min[fan] = new_min;
 938        adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
 939}
 940
 941/* Now add fan_div read/write functions */
 942static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 943                char *buf)
 944{
 945        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 946        int nr = sensor_attr->index;
 947        struct adm1026_data *data = adm1026_update_device(dev);
 948        return sprintf(buf, "%d\n", data->fan_div[nr]);
 949}
 950static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 951                const char *buf, size_t count)
 952{
 953        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 954        int nr = sensor_attr->index;
 955        struct i2c_client *client = to_i2c_client(dev);
 956        struct adm1026_data *data = i2c_get_clientdata(client);
 957        long val;
 958        int orig_div, new_div;
 959        int err;
 960
 961        err = kstrtol(buf, 10, &val);
 962        if (err)
 963                return err;
 964
 965        new_div = DIV_TO_REG(val);
 966
 967        mutex_lock(&data->update_lock);
 968        orig_div = data->fan_div[nr];
 969        data->fan_div[nr] = DIV_FROM_REG(new_div);
 970
 971        if (nr < 4) { /* 0 <= nr < 4 */
 972                adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
 973                                    (DIV_TO_REG(data->fan_div[0]) << 0) |
 974                                    (DIV_TO_REG(data->fan_div[1]) << 2) |
 975                                    (DIV_TO_REG(data->fan_div[2]) << 4) |
 976                                    (DIV_TO_REG(data->fan_div[3]) << 6));
 977        } else { /* 3 < nr < 8 */
 978                adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
 979                                    (DIV_TO_REG(data->fan_div[4]) << 0) |
 980                                    (DIV_TO_REG(data->fan_div[5]) << 2) |
 981                                    (DIV_TO_REG(data->fan_div[6]) << 4) |
 982                                    (DIV_TO_REG(data->fan_div[7]) << 6));
 983        }
 984
 985        if (data->fan_div[nr] != orig_div)
 986                fixup_fan_min(dev, nr, orig_div);
 987
 988        mutex_unlock(&data->update_lock);
 989        return count;
 990}
 991
 992#define fan_offset_div(offset)                                          \
 993static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR,         \
 994                show_fan_div, set_fan_div, offset - 1);
 995
 996fan_offset_div(1);
 997fan_offset_div(2);
 998fan_offset_div(3);
 999fan_offset_div(4);
1000fan_offset_div(5);
1001fan_offset_div(6);
1002fan_offset_div(7);
1003fan_offset_div(8);
1004
1005/* Temps */
1006static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
1007                char *buf)
1008{
1009        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1010        int nr = sensor_attr->index;
1011        struct adm1026_data *data = adm1026_update_device(dev);
1012        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
1013}
1014static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
1015                char *buf)
1016{
1017        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1018        int nr = sensor_attr->index;
1019        struct adm1026_data *data = adm1026_update_device(dev);
1020        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
1021}
1022static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
1023                const char *buf, size_t count)
1024{
1025        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1026        int nr = sensor_attr->index;
1027        struct i2c_client *client = to_i2c_client(dev);
1028        struct adm1026_data *data = i2c_get_clientdata(client);
1029        long val;
1030        int err;
1031
1032        err = kstrtol(buf, 10, &val);
1033        if (err)
1034                return err;
1035
1036        mutex_lock(&data->update_lock);
1037        data->temp_min[nr] = TEMP_TO_REG(val);
1038        adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
1039                data->temp_min[nr]);
1040        mutex_unlock(&data->update_lock);
1041        return count;
1042}
1043static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
1044                char *buf)
1045{
1046        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1047        int nr = sensor_attr->index;
1048        struct adm1026_data *data = adm1026_update_device(dev);
1049        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
1050}
1051static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
1052                const char *buf, size_t count)
1053{
1054        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1055        int nr = sensor_attr->index;
1056        struct i2c_client *client = to_i2c_client(dev);
1057        struct adm1026_data *data = i2c_get_clientdata(client);
1058        long val;
1059        int err;
1060
1061        err = kstrtol(buf, 10, &val);
1062        if (err)
1063                return err;
1064
1065        mutex_lock(&data->update_lock);
1066        data->temp_max[nr] = TEMP_TO_REG(val);
1067        adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
1068                data->temp_max[nr]);
1069        mutex_unlock(&data->update_lock);
1070        return count;
1071}
1072
1073#define temp_reg(offset)                                                \
1074static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,     \
1075                NULL, offset - 1);                                      \
1076static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,        \
1077                show_temp_min, set_temp_min, offset - 1);               \
1078static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,        \
1079                show_temp_max, set_temp_max, offset - 1);
1080
1081
1082temp_reg(1);
1083temp_reg(2);
1084temp_reg(3);
1085
1086static ssize_t show_temp_offset(struct device *dev,
1087                struct device_attribute *attr, char *buf)
1088{
1089        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1090        int nr = sensor_attr->index;
1091        struct adm1026_data *data = adm1026_update_device(dev);
1092        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
1093}
1094static ssize_t set_temp_offset(struct device *dev,
1095                struct device_attribute *attr, const char *buf,
1096                size_t count)
1097{
1098        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1099        int nr = sensor_attr->index;
1100        struct i2c_client *client = to_i2c_client(dev);
1101        struct adm1026_data *data = i2c_get_clientdata(client);
1102        long val;
1103        int err;
1104
1105        err = kstrtol(buf, 10, &val);
1106        if (err)
1107                return err;
1108
1109        mutex_lock(&data->update_lock);
1110        data->temp_offset[nr] = TEMP_TO_REG(val);
1111        adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
1112                data->temp_offset[nr]);
1113        mutex_unlock(&data->update_lock);
1114        return count;
1115}
1116
1117#define temp_offset_reg(offset)                                         \
1118static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR,     \
1119                show_temp_offset, set_temp_offset, offset - 1);
1120
1121temp_offset_reg(1);
1122temp_offset_reg(2);
1123temp_offset_reg(3);
1124
1125static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
1126                struct device_attribute *attr, char *buf)
1127{
1128        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1129        int nr = sensor_attr->index;
1130        struct adm1026_data *data = adm1026_update_device(dev);
1131        return sprintf(buf, "%d\n", TEMP_FROM_REG(
1132                ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
1133}
1134static ssize_t show_temp_auto_point2_temp(struct device *dev,
1135                struct device_attribute *attr, char *buf)
1136{
1137        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1138        int nr = sensor_attr->index;
1139        struct adm1026_data *data = adm1026_update_device(dev);
1140        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
1141                ADM1026_FAN_CONTROL_TEMP_RANGE));
1142}
1143static ssize_t show_temp_auto_point1_temp(struct device *dev,
1144                struct device_attribute *attr, char *buf)
1145{
1146        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1147        int nr = sensor_attr->index;
1148        struct adm1026_data *data = adm1026_update_device(dev);
1149        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
1150}
1151static ssize_t set_temp_auto_point1_temp(struct device *dev,
1152                struct device_attribute *attr, const char *buf, size_t count)
1153{
1154        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1155        int nr = sensor_attr->index;
1156        struct i2c_client *client = to_i2c_client(dev);
1157        struct adm1026_data *data = i2c_get_clientdata(client);
1158        long val;
1159        int err;
1160
1161        err = kstrtol(buf, 10, &val);
1162        if (err)
1163                return err;
1164
1165        mutex_lock(&data->update_lock);
1166        data->temp_tmin[nr] = TEMP_TO_REG(val);
1167        adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
1168                data->temp_tmin[nr]);
1169        mutex_unlock(&data->update_lock);
1170        return count;
1171}
1172
1173#define temp_auto_point(offset)                                         \
1174static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp,              \
1175                S_IRUGO | S_IWUSR, show_temp_auto_point1_temp,          \
1176                set_temp_auto_point1_temp, offset - 1);                 \
1177static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
1178                show_temp_auto_point1_temp_hyst, NULL, offset - 1);     \
1179static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO,     \
1180                show_temp_auto_point2_temp, NULL, offset - 1);
1181
1182temp_auto_point(1);
1183temp_auto_point(2);
1184temp_auto_point(3);
1185
1186static ssize_t show_temp_crit_enable(struct device *dev,
1187                struct device_attribute *attr, char *buf)
1188{
1189        struct adm1026_data *data = adm1026_update_device(dev);
1190        return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
1191}
1192static ssize_t set_temp_crit_enable(struct device *dev,
1193                struct device_attribute *attr, const char *buf, size_t count)
1194{
1195        struct i2c_client *client = to_i2c_client(dev);
1196        struct adm1026_data *data = i2c_get_clientdata(client);
1197        unsigned long val;
1198        int err;
1199
1200        err = kstrtoul(buf, 10, &val);
1201        if (err)
1202                return err;
1203
1204        if (val > 1)
1205                return -EINVAL;
1206
1207        mutex_lock(&data->update_lock);
1208        data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
1209        adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1210        mutex_unlock(&data->update_lock);
1211
1212        return count;
1213}
1214
1215#define temp_crit_enable(offset)                                \
1216static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
1217        show_temp_crit_enable, set_temp_crit_enable);
1218
1219temp_crit_enable(1);
1220temp_crit_enable(2);
1221temp_crit_enable(3);
1222
1223static ssize_t show_temp_crit(struct device *dev,
1224                struct device_attribute *attr, char *buf)
1225{
1226        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1227        int nr = sensor_attr->index;
1228        struct adm1026_data *data = adm1026_update_device(dev);
1229        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
1230}
1231static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
1232                const char *buf, size_t count)
1233{
1234        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1235        int nr = sensor_attr->index;
1236        struct i2c_client *client = to_i2c_client(dev);
1237        struct adm1026_data *data = i2c_get_clientdata(client);
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->temp_crit[nr] = TEMP_TO_REG(val);
1247        adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1248                data->temp_crit[nr]);
1249        mutex_unlock(&data->update_lock);
1250        return count;
1251}
1252
1253#define temp_crit_reg(offset)                                           \
1254static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR,       \
1255                show_temp_crit, set_temp_crit, offset - 1);
1256
1257temp_crit_reg(1);
1258temp_crit_reg(2);
1259temp_crit_reg(3);
1260
1261static ssize_t show_analog_out_reg(struct device *dev,
1262                                   struct device_attribute *attr, char *buf)
1263{
1264        struct adm1026_data *data = adm1026_update_device(dev);
1265        return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1266}
1267static ssize_t set_analog_out_reg(struct device *dev,
1268                                  struct device_attribute *attr,
1269                                  const char *buf, size_t count)
1270{
1271        struct i2c_client *client = to_i2c_client(dev);
1272        struct adm1026_data *data = i2c_get_clientdata(client);
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->analog_out = DAC_TO_REG(val);
1282        adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1283        mutex_unlock(&data->update_lock);
1284        return count;
1285}
1286
1287static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
1288        set_analog_out_reg);
1289
1290static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1291                            char *buf)
1292{
1293        struct adm1026_data *data = adm1026_update_device(dev);
1294        int vid = (data->gpio >> 11) & 0x1f;
1295
1296        dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1297        return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1298}
1299
1300static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1301
1302static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1303                            char *buf)
1304{
1305        struct adm1026_data *data = dev_get_drvdata(dev);
1306        return sprintf(buf, "%d\n", data->vrm);
1307}
1308
1309static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1310                             const char *buf, size_t count)
1311{
1312        struct adm1026_data *data = dev_get_drvdata(dev);
1313        unsigned long val;
1314        int err;
1315
1316        err = kstrtoul(buf, 10, &val);
1317        if (err)
1318                return err;
1319
1320        data->vrm = val;
1321        return count;
1322}
1323
1324static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1325
1326static ssize_t show_alarms_reg(struct device *dev,
1327                               struct device_attribute *attr, char *buf)
1328{
1329        struct adm1026_data *data = adm1026_update_device(dev);
1330        return sprintf(buf, "%ld\n", data->alarms);
1331}
1332
1333static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1334
1335static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1336                          char *buf)
1337{
1338        struct adm1026_data *data = adm1026_update_device(dev);
1339        int bitnr = to_sensor_dev_attr(attr)->index;
1340        return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1341}
1342
1343static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
1344static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
1345static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
1346static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
1347static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
1348static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
1349static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
1350static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
1351static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
1352static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1353static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1354static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1355static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1356static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1357static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1358static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1359static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1360static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
1361static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
1362static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
1363static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
1364static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
1365static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
1366static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
1367static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
1368static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
1369static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
1370static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);
1371
1372static ssize_t show_alarm_mask(struct device *dev,
1373                               struct device_attribute *attr, char *buf)
1374{
1375        struct adm1026_data *data = adm1026_update_device(dev);
1376        return sprintf(buf, "%ld\n", data->alarm_mask);
1377}
1378static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr,
1379                              const char *buf, size_t count)
1380{
1381        struct i2c_client *client = to_i2c_client(dev);
1382        struct adm1026_data *data = i2c_get_clientdata(client);
1383        unsigned long mask;
1384        long val;
1385        int err;
1386
1387        err = kstrtol(buf, 10, &val);
1388        if (err)
1389                return err;
1390
1391        mutex_lock(&data->update_lock);
1392        data->alarm_mask = val & 0x7fffffff;
1393        mask = data->alarm_mask
1394                | (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1395        adm1026_write_value(client, ADM1026_REG_MASK1,
1396                mask & 0xff);
1397        mask >>= 8;
1398        adm1026_write_value(client, ADM1026_REG_MASK2,
1399                mask & 0xff);
1400        mask >>= 8;
1401        adm1026_write_value(client, ADM1026_REG_MASK3,
1402                mask & 0xff);
1403        mask >>= 8;
1404        adm1026_write_value(client, ADM1026_REG_MASK4,
1405                mask & 0xff);
1406        mutex_unlock(&data->update_lock);
1407        return count;
1408}
1409
1410static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
1411        set_alarm_mask);
1412
1413
1414static ssize_t show_gpio(struct device *dev, struct device_attribute *attr,
1415                         char *buf)
1416{
1417        struct adm1026_data *data = adm1026_update_device(dev);
1418        return sprintf(buf, "%ld\n", data->gpio);
1419}
1420static ssize_t set_gpio(struct device *dev, struct device_attribute *attr,
1421                        const char *buf, size_t count)
1422{
1423        struct i2c_client *client = to_i2c_client(dev);
1424        struct adm1026_data *data = i2c_get_clientdata(client);
1425        long gpio;
1426        long val;
1427        int err;
1428
1429        err = kstrtol(buf, 10, &val);
1430        if (err)
1431                return err;
1432
1433        mutex_lock(&data->update_lock);
1434        data->gpio = val & 0x1ffff;
1435        gpio = data->gpio;
1436        adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1437        gpio >>= 8;
1438        adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1439        gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1440        adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1441        mutex_unlock(&data->update_lock);
1442        return count;
1443}
1444
1445static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);
1446
1447static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr,
1448                              char *buf)
1449{
1450        struct adm1026_data *data = adm1026_update_device(dev);
1451        return sprintf(buf, "%ld\n", data->gpio_mask);
1452}
1453static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr,
1454                             const char *buf, size_t count)
1455{
1456        struct i2c_client *client = to_i2c_client(dev);
1457        struct adm1026_data *data = i2c_get_clientdata(client);
1458        long mask;
1459        long val;
1460        int err;
1461
1462        err = kstrtol(buf, 10, &val);
1463        if (err)
1464                return err;
1465
1466        mutex_lock(&data->update_lock);
1467        data->gpio_mask = val & 0x1ffff;
1468        mask = data->gpio_mask;
1469        adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1470        mask >>= 8;
1471        adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1472        mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1473        adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1474        mutex_unlock(&data->update_lock);
1475        return count;
1476}
1477
1478static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);
1479
1480static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr,
1481                            char *buf)
1482{
1483        struct adm1026_data *data = adm1026_update_device(dev);
1484        return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1485}
1486
1487static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr,
1488                           const char *buf, size_t count)
1489{
1490        struct i2c_client *client = to_i2c_client(dev);
1491        struct adm1026_data *data = i2c_get_clientdata(client);
1492
1493        if (data->pwm1.enable == 1) {
1494                long val;
1495                int err;
1496
1497                err = kstrtol(buf, 10, &val);
1498                if (err)
1499                        return err;
1500
1501                mutex_lock(&data->update_lock);
1502                data->pwm1.pwm = PWM_TO_REG(val);
1503                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1504                mutex_unlock(&data->update_lock);
1505        }
1506        return count;
1507}
1508
1509static ssize_t show_auto_pwm_min(struct device *dev,
1510                                 struct device_attribute *attr, char *buf)
1511{
1512        struct adm1026_data *data = adm1026_update_device(dev);
1513        return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1514}
1515
1516static ssize_t set_auto_pwm_min(struct device *dev,
1517                                struct device_attribute *attr, const char *buf,
1518                                size_t count)
1519{
1520        struct i2c_client *client = to_i2c_client(dev);
1521        struct adm1026_data *data = i2c_get_clientdata(client);
1522        unsigned long val;
1523        int err;
1524
1525        err = kstrtoul(buf, 10, &val);
1526        if (err)
1527                return err;
1528
1529        mutex_lock(&data->update_lock);
1530        data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
1531        if (data->pwm1.enable == 2) { /* apply immediately */
1532                data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1533                        PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1534                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1535        }
1536        mutex_unlock(&data->update_lock);
1537        return count;
1538}
1539
1540static ssize_t show_auto_pwm_max(struct device *dev,
1541                                 struct device_attribute *attr, char *buf)
1542{
1543        return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1544}
1545
1546static ssize_t show_pwm_enable(struct device *dev,
1547                               struct device_attribute *attr, char *buf)
1548{
1549        struct adm1026_data *data = adm1026_update_device(dev);
1550        return sprintf(buf, "%d\n", data->pwm1.enable);
1551}
1552
1553static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1554                              const char *buf, size_t count)
1555{
1556        struct i2c_client *client = to_i2c_client(dev);
1557        struct adm1026_data *data = i2c_get_clientdata(client);
1558        int old_enable;
1559        unsigned long val;
1560        int err;
1561
1562        err = kstrtoul(buf, 10, &val);
1563        if (err)
1564                return err;
1565
1566        if (val >= 3)
1567                return -EINVAL;
1568
1569        mutex_lock(&data->update_lock);
1570        old_enable = data->pwm1.enable;
1571        data->pwm1.enable = val;
1572        data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1573                        | ((val == 2) ? CFG1_PWM_AFC : 0);
1574        adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1575        if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1576                data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1577                        PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1578                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1579        } else if (!((old_enable == 1) && (val == 1))) {
1580                /* set pwm to safe value */
1581                data->pwm1.pwm = 255;
1582                adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1583        }
1584        mutex_unlock(&data->update_lock);
1585
1586        return count;
1587}
1588
1589/* enable PWM fan control */
1590static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1591static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1592static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1593static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1594        set_pwm_enable);
1595static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1596        set_pwm_enable);
1597static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1598        set_pwm_enable);
1599static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1600        show_auto_pwm_min, set_auto_pwm_min);
1601static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1602        show_auto_pwm_min, set_auto_pwm_min);
1603static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1604        show_auto_pwm_min, set_auto_pwm_min);
1605
1606static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1607static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1608static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1609
1610static struct attribute *adm1026_attributes[] = {
1611        &sensor_dev_attr_in0_input.dev_attr.attr,
1612        &sensor_dev_attr_in0_max.dev_attr.attr,
1613        &sensor_dev_attr_in0_min.dev_attr.attr,
1614        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1615        &sensor_dev_attr_in1_input.dev_attr.attr,
1616        &sensor_dev_attr_in1_max.dev_attr.attr,
1617        &sensor_dev_attr_in1_min.dev_attr.attr,
1618        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1619        &sensor_dev_attr_in2_input.dev_attr.attr,
1620        &sensor_dev_attr_in2_max.dev_attr.attr,
1621        &sensor_dev_attr_in2_min.dev_attr.attr,
1622        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1623        &sensor_dev_attr_in3_input.dev_attr.attr,
1624        &sensor_dev_attr_in3_max.dev_attr.attr,
1625        &sensor_dev_attr_in3_min.dev_attr.attr,
1626        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1627        &sensor_dev_attr_in4_input.dev_attr.attr,
1628        &sensor_dev_attr_in4_max.dev_attr.attr,
1629        &sensor_dev_attr_in4_min.dev_attr.attr,
1630        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1631        &sensor_dev_attr_in5_input.dev_attr.attr,
1632        &sensor_dev_attr_in5_max.dev_attr.attr,
1633        &sensor_dev_attr_in5_min.dev_attr.attr,
1634        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1635        &sensor_dev_attr_in6_input.dev_attr.attr,
1636        &sensor_dev_attr_in6_max.dev_attr.attr,
1637        &sensor_dev_attr_in6_min.dev_attr.attr,
1638        &sensor_dev_attr_in6_alarm.dev_attr.attr,
1639        &sensor_dev_attr_in7_input.dev_attr.attr,
1640        &sensor_dev_attr_in7_max.dev_attr.attr,
1641        &sensor_dev_attr_in7_min.dev_attr.attr,
1642        &sensor_dev_attr_in7_alarm.dev_attr.attr,
1643        &sensor_dev_attr_in10_input.dev_attr.attr,
1644        &sensor_dev_attr_in10_max.dev_attr.attr,
1645        &sensor_dev_attr_in10_min.dev_attr.attr,
1646        &sensor_dev_attr_in10_alarm.dev_attr.attr,
1647        &sensor_dev_attr_in11_input.dev_attr.attr,
1648        &sensor_dev_attr_in11_max.dev_attr.attr,
1649        &sensor_dev_attr_in11_min.dev_attr.attr,
1650        &sensor_dev_attr_in11_alarm.dev_attr.attr,
1651        &sensor_dev_attr_in12_input.dev_attr.attr,
1652        &sensor_dev_attr_in12_max.dev_attr.attr,
1653        &sensor_dev_attr_in12_min.dev_attr.attr,
1654        &sensor_dev_attr_in12_alarm.dev_attr.attr,
1655        &sensor_dev_attr_in13_input.dev_attr.attr,
1656        &sensor_dev_attr_in13_max.dev_attr.attr,
1657        &sensor_dev_attr_in13_min.dev_attr.attr,
1658        &sensor_dev_attr_in13_alarm.dev_attr.attr,
1659        &sensor_dev_attr_in14_input.dev_attr.attr,
1660        &sensor_dev_attr_in14_max.dev_attr.attr,
1661        &sensor_dev_attr_in14_min.dev_attr.attr,
1662        &sensor_dev_attr_in14_alarm.dev_attr.attr,
1663        &sensor_dev_attr_in15_input.dev_attr.attr,
1664        &sensor_dev_attr_in15_max.dev_attr.attr,
1665        &sensor_dev_attr_in15_min.dev_attr.attr,
1666        &sensor_dev_attr_in15_alarm.dev_attr.attr,
1667        &sensor_dev_attr_in16_input.dev_attr.attr,
1668        &sensor_dev_attr_in16_max.dev_attr.attr,
1669        &sensor_dev_attr_in16_min.dev_attr.attr,
1670        &sensor_dev_attr_in16_alarm.dev_attr.attr,
1671        &sensor_dev_attr_fan1_input.dev_attr.attr,
1672        &sensor_dev_attr_fan1_div.dev_attr.attr,
1673        &sensor_dev_attr_fan1_min.dev_attr.attr,
1674        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1675        &sensor_dev_attr_fan2_input.dev_attr.attr,
1676        &sensor_dev_attr_fan2_div.dev_attr.attr,
1677        &sensor_dev_attr_fan2_min.dev_attr.attr,
1678        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1679        &sensor_dev_attr_fan3_input.dev_attr.attr,
1680        &sensor_dev_attr_fan3_div.dev_attr.attr,
1681        &sensor_dev_attr_fan3_min.dev_attr.attr,
1682        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1683        &sensor_dev_attr_fan4_input.dev_attr.attr,
1684        &sensor_dev_attr_fan4_div.dev_attr.attr,
1685        &sensor_dev_attr_fan4_min.dev_attr.attr,
1686        &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1687        &sensor_dev_attr_fan5_input.dev_attr.attr,
1688        &sensor_dev_attr_fan5_div.dev_attr.attr,
1689        &sensor_dev_attr_fan5_min.dev_attr.attr,
1690        &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1691        &sensor_dev_attr_fan6_input.dev_attr.attr,
1692        &sensor_dev_attr_fan6_div.dev_attr.attr,
1693        &sensor_dev_attr_fan6_min.dev_attr.attr,
1694        &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1695        &sensor_dev_attr_fan7_input.dev_attr.attr,
1696        &sensor_dev_attr_fan7_div.dev_attr.attr,
1697        &sensor_dev_attr_fan7_min.dev_attr.attr,
1698        &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1699        &sensor_dev_attr_fan8_input.dev_attr.attr,
1700        &sensor_dev_attr_fan8_div.dev_attr.attr,
1701        &sensor_dev_attr_fan8_min.dev_attr.attr,
1702        &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1703        &sensor_dev_attr_temp1_input.dev_attr.attr,
1704        &sensor_dev_attr_temp1_max.dev_attr.attr,
1705        &sensor_dev_attr_temp1_min.dev_attr.attr,
1706        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1707        &sensor_dev_attr_temp2_input.dev_attr.attr,
1708        &sensor_dev_attr_temp2_max.dev_attr.attr,
1709        &sensor_dev_attr_temp2_min.dev_attr.attr,
1710        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1711        &sensor_dev_attr_temp1_offset.dev_attr.attr,
1712        &sensor_dev_attr_temp2_offset.dev_attr.attr,
1713        &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1714        &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1715        &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1716        &sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1717        &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1718        &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1719        &sensor_dev_attr_temp1_crit.dev_attr.attr,
1720        &sensor_dev_attr_temp2_crit.dev_attr.attr,
1721        &dev_attr_temp1_crit_enable.attr,
1722        &dev_attr_temp2_crit_enable.attr,
1723        &dev_attr_cpu0_vid.attr,
1724        &dev_attr_vrm.attr,
1725        &dev_attr_alarms.attr,
1726        &dev_attr_alarm_mask.attr,
1727        &dev_attr_gpio.attr,
1728        &dev_attr_gpio_mask.attr,
1729        &dev_attr_pwm1.attr,
1730        &dev_attr_pwm2.attr,
1731        &dev_attr_pwm3.attr,
1732        &dev_attr_pwm1_enable.attr,
1733        &dev_attr_pwm2_enable.attr,
1734        &dev_attr_pwm3_enable.attr,
1735        &dev_attr_temp1_auto_point1_pwm.attr,
1736        &dev_attr_temp2_auto_point1_pwm.attr,
1737        &dev_attr_temp1_auto_point2_pwm.attr,
1738        &dev_attr_temp2_auto_point2_pwm.attr,
1739        &dev_attr_analog_out.attr,
1740        NULL
1741};
1742
1743static const struct attribute_group adm1026_group = {
1744        .attrs = adm1026_attributes,
1745};
1746
1747static struct attribute *adm1026_attributes_temp3[] = {
1748        &sensor_dev_attr_temp3_input.dev_attr.attr,
1749        &sensor_dev_attr_temp3_max.dev_attr.attr,
1750        &sensor_dev_attr_temp3_min.dev_attr.attr,
1751        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1752        &sensor_dev_attr_temp3_offset.dev_attr.attr,
1753        &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1754        &sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1755        &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1756        &sensor_dev_attr_temp3_crit.dev_attr.attr,
1757        &dev_attr_temp3_crit_enable.attr,
1758        &dev_attr_temp3_auto_point1_pwm.attr,
1759        &dev_attr_temp3_auto_point2_pwm.attr,
1760        NULL
1761};
1762
1763static const struct attribute_group adm1026_group_temp3 = {
1764        .attrs = adm1026_attributes_temp3,
1765};
1766
1767static struct attribute *adm1026_attributes_in8_9[] = {
1768        &sensor_dev_attr_in8_input.dev_attr.attr,
1769        &sensor_dev_attr_in8_max.dev_attr.attr,
1770        &sensor_dev_attr_in8_min.dev_attr.attr,
1771        &sensor_dev_attr_in8_alarm.dev_attr.attr,
1772        &sensor_dev_attr_in9_input.dev_attr.attr,
1773        &sensor_dev_attr_in9_max.dev_attr.attr,
1774        &sensor_dev_attr_in9_min.dev_attr.attr,
1775        &sensor_dev_attr_in9_alarm.dev_attr.attr,
1776        NULL
1777};
1778
1779static const struct attribute_group adm1026_group_in8_9 = {
1780        .attrs = adm1026_attributes_in8_9,
1781};
1782
1783/* Return 0 if detection is successful, -ENODEV otherwise */
1784static int adm1026_detect(struct i2c_client *client,
1785                          struct i2c_board_info *info)
1786{
1787        struct i2c_adapter *adapter = client->adapter;
1788        int address = client->addr;
1789        int company, verstep;
1790
1791        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1792                /* We need to be able to do byte I/O */
1793                return -ENODEV;
1794        };
1795
1796        /* Now, we do the remaining detection. */
1797
1798        company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1799        verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1800
1801        dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1802                " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1803                i2c_adapter_id(client->adapter), client->addr,
1804                company, verstep);
1805
1806        /* Determine the chip type. */
1807        dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1808                i2c_adapter_id(adapter), address);
1809        if (company == ADM1026_COMPANY_ANALOG_DEV
1810            && verstep == ADM1026_VERSTEP_ADM1026) {
1811                /* Analog Devices ADM1026 */
1812        } else if (company == ADM1026_COMPANY_ANALOG_DEV
1813                && (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1814                dev_err(&adapter->dev, "Unrecognized stepping "
1815                        "0x%02x. Defaulting to ADM1026.\n", verstep);
1816        } else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1817                dev_err(&adapter->dev, "Found version/stepping "
1818                        "0x%02x. Assuming generic ADM1026.\n",
1819                        verstep);
1820        } else {
1821                dev_dbg(&adapter->dev, "Autodetection failed\n");
1822                /* Not an ADM1026... */
1823                return -ENODEV;
1824        }
1825
1826        strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1827
1828        return 0;
1829}
1830
1831static int adm1026_probe(struct i2c_client *client,
1832                         const struct i2c_device_id *id)
1833{
1834        struct adm1026_data *data;
1835        int err;
1836
1837        data = devm_kzalloc(&client->dev, sizeof(struct adm1026_data),
1838                            GFP_KERNEL);
1839        if (!data)
1840                return -ENOMEM;
1841
1842        i2c_set_clientdata(client, data);
1843        mutex_init(&data->update_lock);
1844
1845        /* Set the VRM version */
1846        data->vrm = vid_which_vrm();
1847
1848        /* Initialize the ADM1026 chip */
1849        adm1026_init_client(client);
1850
1851        /* Register sysfs hooks */
1852        err = sysfs_create_group(&client->dev.kobj, &adm1026_group);
1853        if (err)
1854                return err;
1855        if (data->config1 & CFG1_AIN8_9)
1856                err = sysfs_create_group(&client->dev.kobj,
1857                                         &adm1026_group_in8_9);
1858        else
1859                err = sysfs_create_group(&client->dev.kobj,
1860                                         &adm1026_group_temp3);
1861        if (err)
1862                goto exitremove;
1863
1864        data->hwmon_dev = hwmon_device_register(&client->dev);
1865        if (IS_ERR(data->hwmon_dev)) {
1866                err = PTR_ERR(data->hwmon_dev);
1867                goto exitremove;
1868        }
1869
1870        return 0;
1871
1872        /* Error out and cleanup code */
1873exitremove:
1874        sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1875        if (data->config1 & CFG1_AIN8_9)
1876                sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1877        else
1878                sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1879        return err;
1880}
1881
1882static int adm1026_remove(struct i2c_client *client)
1883{
1884        struct adm1026_data *data = i2c_get_clientdata(client);
1885        hwmon_device_unregister(data->hwmon_dev);
1886        sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1887        if (data->config1 & CFG1_AIN8_9)
1888                sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1889        else
1890                sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1891        return 0;
1892}
1893
1894module_i2c_driver(adm1026_driver);
1895
1896MODULE_LICENSE("GPL");
1897MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1898              "Justin Thiessen <jthiessen@penguincomputing.com>");
1899MODULE_DESCRIPTION("ADM1026 driver");
1900
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