drivers/hwmon/adm1026.c

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This source file includes following definitions.
adm1026_read_value
adm1026_write_value
adm1026_update_device
in_show
in_min_show
in_min_store
in_max_show
in_max_store
in16_show
in16_min_show
in16_min_store
in16_max_show
in16_max_store
fan_show
fan_min_show
fan_min_store
fixup_fan_min
fan_div_show
fan_div_store
temp_show
temp_min_show
temp_min_store
temp_max_show
temp_max_store
temp_offset_show
temp_offset_store
temp_auto_point1_temp_hyst_show
temp_auto_point2_temp_show
temp_auto_point1_temp_show
temp_auto_point1_temp_store
show_temp_crit_enable
set_temp_crit_enable
temp_crit_show
temp_crit_store
analog_out_show
analog_out_store
cpu0_vid_show
vrm_show
vrm_store
alarms_show
alarm_show
alarm_mask_show
alarm_mask_store
gpio_show
gpio_store
gpio_mask_show
gpio_mask_store
pwm1_show
pwm1_store
temp1_auto_point1_pwm_show
temp1_auto_point1_pwm_store
temp1_auto_point2_pwm_show
pwm1_enable_show
pwm1_enable_store
adm1026_detect
adm1026_print_gpio
adm1026_fixup_gpio
adm1026_init_client
adm1026_probe
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
   4  *             monitoring
   5  * Copyright (C) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
   6  * Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
   7  *
   8  * Chip details at:
   9  *
  10  * <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>
  11  */
  12 
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/slab.h>
  16 #include <linux/jiffies.h>
  17 #include <linux/i2c.h>
  18 #include <linux/hwmon.h>
  19 #include <linux/hwmon-sysfs.h>
  20 #include <linux/hwmon-vid.h>
  21 #include <linux/err.h>
  22 #include <linux/mutex.h>
  23 
  24 /* Addresses to scan */
  25 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
  26 
  27 static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  28                                 -1, -1, -1, -1, -1, -1, -1, -1 };
  29 static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  30                                 -1, -1, -1, -1, -1, -1, -1, -1 };
  31 static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  32                                 -1, -1, -1, -1, -1, -1, -1, -1 };
  33 static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
  34                                 -1, -1, -1, -1, -1, -1, -1, -1 };
  35 static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
  36 module_param_array(gpio_input, int, NULL, 0);
  37 MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
  38 module_param_array(gpio_output, int, NULL, 0);
  39 MODULE_PARM_DESC(gpio_output,
  40                  "List of GPIO pins (0-16) to program as outputs");
  41 module_param_array(gpio_inverted, int, NULL, 0);
  42 MODULE_PARM_DESC(gpio_inverted,
  43                  "List of GPIO pins (0-16) to program as inverted");
  44 module_param_array(gpio_normal, int, NULL, 0);
  45 MODULE_PARM_DESC(gpio_normal,
  46                  "List of GPIO pins (0-16) to program as normal/non-inverted");
  47 module_param_array(gpio_fan, int, NULL, 0);
  48 MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");
  49 
  50 /* Many ADM1026 constants specified below */
  51 
  52 /* The ADM1026 registers */
  53 #define ADM1026_REG_CONFIG1     0x00
  54 #define CFG1_MONITOR            0x01
  55 #define CFG1_INT_ENABLE         0x02
  56 #define CFG1_INT_CLEAR          0x04
  57 #define CFG1_AIN8_9             0x08
  58 #define CFG1_THERM_HOT          0x10
  59 #define CFG1_DAC_AFC            0x20
  60 #define CFG1_PWM_AFC            0x40
  61 #define CFG1_RESET              0x80
  62 
  63 #define ADM1026_REG_CONFIG2     0x01
  64 /* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
  65 
  66 #define ADM1026_REG_CONFIG3     0x07
  67 #define CFG3_GPIO16_ENABLE      0x01
  68 #define CFG3_CI_CLEAR           0x02
  69 #define CFG3_VREF_250           0x04
  70 #define CFG3_GPIO16_DIR         0x40
  71 #define CFG3_GPIO16_POL         0x80
  72 
  73 #define ADM1026_REG_E2CONFIG    0x13
  74 #define E2CFG_READ              0x01
  75 #define E2CFG_WRITE             0x02
  76 #define E2CFG_ERASE             0x04
  77 #define E2CFG_ROM               0x08
  78 #define E2CFG_CLK_EXT           0x80
  79 
  80 /*
  81  * There are 10 general analog inputs and 7 dedicated inputs
  82  * They are:
  83  *    0 - 9  =  AIN0 - AIN9
  84  *       10  =  Vbat
  85  *       11  =  3.3V Standby
  86  *       12  =  3.3V Main
  87  *       13  =  +5V
  88  *       14  =  Vccp (CPU core voltage)
  89  *       15  =  +12V
  90  *       16  =  -12V
  91  */
  92 static u16 ADM1026_REG_IN[] = {
  93                 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
  94                 0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
  95                 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
  96         };
  97 static u16 ADM1026_REG_IN_MIN[] = {
  98                 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
  99                 0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
 100                 0x4b, 0x4c, 0x4d, 0x4e, 0x4f
 101         };
 102 static u16 ADM1026_REG_IN_MAX[] = {
 103                 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
 104                 0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
 105                 0x43, 0x44, 0x45, 0x46, 0x47
 106         };
 107 
 108 /*
 109  * Temperatures are:
 110  *    0 - Internal
 111  *    1 - External 1
 112  *    2 - External 2
 113  */
 114 static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
 115 static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
 116 static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
 117 static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
 118 static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
 119 static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
 120 
 121 #define ADM1026_REG_FAN(nr)             (0x38 + (nr))
 122 #define ADM1026_REG_FAN_MIN(nr)         (0x60 + (nr))
 123 #define ADM1026_REG_FAN_DIV_0_3         0x02
 124 #define ADM1026_REG_FAN_DIV_4_7         0x03
 125 
 126 #define ADM1026_REG_DAC                 0x04
 127 #define ADM1026_REG_PWM                 0x05
 128 
 129 #define ADM1026_REG_GPIO_CFG_0_3        0x08
 130 #define ADM1026_REG_GPIO_CFG_4_7        0x09
 131 #define ADM1026_REG_GPIO_CFG_8_11       0x0a
 132 #define ADM1026_REG_GPIO_CFG_12_15      0x0b
 133 /* CFG_16 in REG_CFG3 */
 134 #define ADM1026_REG_GPIO_STATUS_0_7     0x24
 135 #define ADM1026_REG_GPIO_STATUS_8_15    0x25
 136 /* STATUS_16 in REG_STATUS4 */
 137 #define ADM1026_REG_GPIO_MASK_0_7       0x1c
 138 #define ADM1026_REG_GPIO_MASK_8_15      0x1d
 139 /* MASK_16 in REG_MASK4 */
 140 
 141 #define ADM1026_REG_COMPANY             0x16
 142 #define ADM1026_REG_VERSTEP             0x17
 143 /* These are the recognized values for the above regs */
 144 #define ADM1026_COMPANY_ANALOG_DEV      0x41
 145 #define ADM1026_VERSTEP_GENERIC         0x40
 146 #define ADM1026_VERSTEP_ADM1026         0x44
 147 
 148 #define ADM1026_REG_MASK1               0x18
 149 #define ADM1026_REG_MASK2               0x19
 150 #define ADM1026_REG_MASK3               0x1a
 151 #define ADM1026_REG_MASK4               0x1b
 152 
 153 #define ADM1026_REG_STATUS1             0x20
 154 #define ADM1026_REG_STATUS2             0x21
 155 #define ADM1026_REG_STATUS3             0x22
 156 #define ADM1026_REG_STATUS4             0x23
 157 
 158 #define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
 159 #define ADM1026_FAN_CONTROL_TEMP_RANGE  20
 160 #define ADM1026_PWM_MAX                 255
 161 
 162 /*
 163  * Conversions. Rounding and limit checking is only done on the TO_REG
 164  * variants. Note that you should be a bit careful with which arguments
 165  * these macros are called: arguments may be evaluated more than once.
 166  */
 167 
 168 /*
 169  * IN are scaled according to built-in resistors.  These are the
 170  *   voltages corresponding to 3/4 of full scale (192 or 0xc0)
 171  *   NOTE: The -12V input needs an additional factor to account
 172  *      for the Vref pullup resistor.
 173  *      NEG12_OFFSET = SCALE * Vref / V-192 - Vref
 174  *                   = 13875 * 2.50 / 1.875 - 2500
 175  *                   = 16000
 176  *
 177  * The values in this table are based on Table II, page 15 of the
 178  *    datasheet.
 179  */
 180 static int adm1026_scaling[] = { /* .001 Volts */
 181                 2250, 2250, 2250, 2250, 2250, 2250,
 182                 1875, 1875, 1875, 1875, 3000, 3330,
 183                 3330, 4995, 2250, 12000, 13875
 184         };
 185 #define NEG12_OFFSET  16000
 186 #define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
 187 #define INS_TO_REG(n, val)      \
 188                 SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \
 189                       adm1026_scaling[n], 192)
 190 #define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
 191 
 192 /*
 193  * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
 194  *   and we assume a 2 pulse-per-rev fan tach signal
 195  *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
 196  */
 197 #define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
 198                                 clamp_val(1350000 / ((val) * (div)), \
 199                                               1, 254))
 200 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
 201                                 1350000 / ((val) * (div)))
 202 #define DIV_FROM_REG(val) (1 << (val))
 203 #define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
 204 
 205 /* Temperature is reported in 1 degC increments */
 206 #define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
 207                                            1000)
 208 #define TEMP_FROM_REG(val) ((val) * 1000)
 209 #define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
 210                                              1000)
 211 #define OFFSET_FROM_REG(val) ((val) * 1000)
 212 
 213 #define PWM_TO_REG(val) (clamp_val(val, 0, 255))
 214 #define PWM_FROM_REG(val) (val)
 215 
 216 #define PWM_MIN_TO_REG(val) ((val) & 0xf0)
 217 #define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
 218 
 219 /*
 220  * Analog output is a voltage, and scaled to millivolts.  The datasheet
 221  *   indicates that the DAC could be used to drive the fans, but in our
 222  *   example board (Arima HDAMA) it isn't connected to the fans at all.
 223  */
 224 #define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \
 225                                           2500)
 226 #define DAC_FROM_REG(val) (((val) * 2500) / 255)
 227 
 228 /*
 229  * Chip sampling rates
 230  *
 231  * Some sensors are not updated more frequently than once per second
 232  *    so it doesn't make sense to read them more often than that.
 233  *    We cache the results and return the saved data if the driver
 234  *    is called again before a second has elapsed.
 235  *
 236  * Also, there is significant configuration data for this chip
 237  *    So, we keep the config data up to date in the cache
 238  *    when it is written and only sample it once every 5 *minutes*
 239  */
 240 #define ADM1026_DATA_INTERVAL           (1 * HZ)
 241 #define ADM1026_CONFIG_INTERVAL         (5 * 60 * HZ)
 242 
 243 /*
 244  * We allow for multiple chips in a single system.
 245  *
 246  * For each registered ADM1026, we need to keep state information
 247  * at client->data. The adm1026_data structure is dynamically
 248  * allocated, when a new client structure is allocated.
 249  */
 250 
 251 struct pwm_data {
 252         u8 pwm;
 253         u8 enable;
 254         u8 auto_pwm_min;
 255 };
 256 
 257 struct adm1026_data {
 258         struct i2c_client *client;
 259         const struct attribute_group *groups[3];
 260 
 261         struct mutex update_lock;
 262         int valid;              /* !=0 if following fields are valid */
 263         unsigned long last_reading;     /* In jiffies */
 264         unsigned long last_config;      /* In jiffies */
 265 
 266         u8 in[17];              /* Register value */
 267         u8 in_max[17];          /* Register value */
 268         u8 in_min[17];          /* Register value */
 269         s8 temp[3];             /* Register value */
 270         s8 temp_min[3];         /* Register value */
 271         s8 temp_max[3];         /* Register value */
 272         s8 temp_tmin[3];        /* Register value */
 273         s8 temp_crit[3];        /* Register value */
 274         s8 temp_offset[3];      /* Register value */
 275         u8 fan[8];              /* Register value */
 276         u8 fan_min[8];          /* Register value */
 277         u8 fan_div[8];          /* Decoded value */
 278         struct pwm_data pwm1;   /* Pwm control values */
 279         u8 vrm;                 /* VRM version */
 280         u8 analog_out;          /* Register value (DAC) */
 281         long alarms;            /* Register encoding, combined */
 282         long alarm_mask;        /* Register encoding, combined */
 283         long gpio;              /* Register encoding, combined */
 284         long gpio_mask;         /* Register encoding, combined */
 285         u8 gpio_config[17];     /* Decoded value */
 286         u8 config1;             /* Register value */
 287         u8 config2;             /* Register value */
 288         u8 config3;             /* Register value */
 289 };
 290 
 291 static int adm1026_read_value(struct i2c_client *client, u8 reg)
 292 {
 293         int res;
 294 
 295         if (reg < 0x80) {
 296                 /* "RAM" locations */
 297                 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
 298         } else {
 299                 /* EEPROM, do nothing */
 300                 res = 0;
 301         }
 302         return res;
 303 }
 304 
 305 static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 306 {
 307         int res;
 308 
 309         if (reg < 0x80) {
 310                 /* "RAM" locations */
 311                 res = i2c_smbus_write_byte_data(client, reg, value);
 312         } else {
 313                 /* EEPROM, do nothing */
 314                 res = 0;
 315         }
 316         return res;
 317 }
 318 
 319 static struct adm1026_data *adm1026_update_device(struct device *dev)
 320 {
 321         struct adm1026_data *data = dev_get_drvdata(dev);
 322         struct i2c_client *client = data->client;
 323         int i;
 324         long value, alarms, gpio;
 325 
 326         mutex_lock(&data->update_lock);
 327         if (!data->valid
 328             || time_after(jiffies,
 329                           data->last_reading + ADM1026_DATA_INTERVAL)) {
 330                 /* Things that change quickly */
 331                 dev_dbg(&client->dev, "Reading sensor values\n");
 332                 for (i = 0; i <= 16; ++i) {
 333                         data->in[i] =
 334                             adm1026_read_value(client, ADM1026_REG_IN[i]);
 335                 }
 336 
 337                 for (i = 0; i <= 7; ++i) {
 338                         data->fan[i] =
 339                             adm1026_read_value(client, ADM1026_REG_FAN(i));
 340                 }
 341 
 342                 for (i = 0; i <= 2; ++i) {
 343                         /*
 344                          * NOTE: temp[] is s8 and we assume 2's complement
 345                          *   "conversion" in the assignment
 346                          */
 347                         data->temp[i] =
 348                             adm1026_read_value(client, ADM1026_REG_TEMP[i]);
 349                 }
 350 
 351                 data->pwm1.pwm = adm1026_read_value(client,
 352                         ADM1026_REG_PWM);
 353                 data->analog_out = adm1026_read_value(client,
 354                         ADM1026_REG_DAC);
 355                 /* GPIO16 is MSbit of alarms, move it to gpio */
 356                 alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
 357                 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 358                 alarms &= 0x7f;
 359                 alarms <<= 8;
 360                 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
 361                 alarms <<= 8;
 362                 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
 363                 alarms <<= 8;
 364                 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
 365                 data->alarms = alarms;
 366 
 367                 /* Read the GPIO values */
 368                 gpio |= adm1026_read_value(client,
 369                         ADM1026_REG_GPIO_STATUS_8_15);
 370                 gpio <<= 8;
 371                 gpio |= adm1026_read_value(client,
 372                         ADM1026_REG_GPIO_STATUS_0_7);
 373                 data->gpio = gpio;
 374 
 375                 data->last_reading = jiffies;
 376         }       /* last_reading */
 377 
 378         if (!data->valid ||
 379             time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
 380                 /* Things that don't change often */
 381                 dev_dbg(&client->dev, "Reading config values\n");
 382                 for (i = 0; i <= 16; ++i) {
 383                         data->in_min[i] = adm1026_read_value(client,
 384                                 ADM1026_REG_IN_MIN[i]);
 385                         data->in_max[i] = adm1026_read_value(client,
 386                                 ADM1026_REG_IN_MAX[i]);
 387                 }
 388 
 389                 value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
 390                         | (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
 391                         << 8);
 392                 for (i = 0; i <= 7; ++i) {
 393                         data->fan_min[i] = adm1026_read_value(client,
 394                                 ADM1026_REG_FAN_MIN(i));
 395                         data->fan_div[i] = DIV_FROM_REG(value & 0x03);
 396                         value >>= 2;
 397                 }
 398 
 399                 for (i = 0; i <= 2; ++i) {
 400                         /*
 401                          * NOTE: temp_xxx[] are s8 and we assume 2's
 402                          *    complement "conversion" in the assignment
 403                          */
 404                         data->temp_min[i] = adm1026_read_value(client,
 405                                 ADM1026_REG_TEMP_MIN[i]);
 406                         data->temp_max[i] = adm1026_read_value(client,
 407                                 ADM1026_REG_TEMP_MAX[i]);
 408                         data->temp_tmin[i] = adm1026_read_value(client,
 409                                 ADM1026_REG_TEMP_TMIN[i]);
 410                         data->temp_crit[i] = adm1026_read_value(client,
 411                                 ADM1026_REG_TEMP_THERM[i]);
 412                         data->temp_offset[i] = adm1026_read_value(client,
 413                                 ADM1026_REG_TEMP_OFFSET[i]);
 414                 }
 415 
 416                 /* Read the STATUS/alarm masks */
 417                 alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
 418                 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
 419                 alarms = (alarms & 0x7f) << 8;
 420                 alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
 421                 alarms <<= 8;
 422                 alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
 423                 alarms <<= 8;
 424                 alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
 425                 data->alarm_mask = alarms;
 426 
 427                 /* Read the GPIO values */
 428                 gpio |= adm1026_read_value(client,
 429                         ADM1026_REG_GPIO_MASK_8_15);
 430                 gpio <<= 8;
 431                 gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
 432                 data->gpio_mask = gpio;
 433 
 434                 /* Read various values from CONFIG1 */
 435                 data->config1 = adm1026_read_value(client,
 436                         ADM1026_REG_CONFIG1);
 437                 if (data->config1 & CFG1_PWM_AFC) {
 438                         data->pwm1.enable = 2;
 439                         data->pwm1.auto_pwm_min =
 440                                 PWM_MIN_FROM_REG(data->pwm1.pwm);
 441                 }
 442                 /* Read the GPIO config */
 443                 data->config2 = adm1026_read_value(client,
 444                         ADM1026_REG_CONFIG2);
 445                 data->config3 = adm1026_read_value(client,
 446                         ADM1026_REG_CONFIG3);
 447                 data->gpio_config[16] = (data->config3 >> 6) & 0x03;
 448 
 449                 value = 0;
 450                 for (i = 0; i <= 15; ++i) {
 451                         if ((i & 0x03) == 0) {
 452                                 value = adm1026_read_value(client,
 453                                             ADM1026_REG_GPIO_CFG_0_3 + i/4);
 454                         }
 455                         data->gpio_config[i] = value & 0x03;
 456                         value >>= 2;
 457                 }
 458 
 459                 data->last_config = jiffies;
 460         }       /* last_config */
 461 
 462         data->valid = 1;
 463         mutex_unlock(&data->update_lock);
 464         return data;
 465 }
 466 
 467 static ssize_t in_show(struct device *dev, struct device_attribute *attr,
 468                        char *buf)
 469 {
 470         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 471         int nr = sensor_attr->index;
 472         struct adm1026_data *data = adm1026_update_device(dev);
 473         return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
 474 }
 475 static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
 476                            char *buf)
 477 {
 478         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 479         int nr = sensor_attr->index;
 480         struct adm1026_data *data = adm1026_update_device(dev);
 481         return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
 482 }
 483 static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
 484                             const char *buf, size_t count)
 485 {
 486         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 487         int nr = sensor_attr->index;
 488         struct adm1026_data *data = dev_get_drvdata(dev);
 489         struct i2c_client *client = data->client;
 490         long val;
 491         int err;
 492 
 493         err = kstrtol(buf, 10, &val);
 494         if (err)
 495                 return err;
 496 
 497         mutex_lock(&data->update_lock);
 498         data->in_min[nr] = INS_TO_REG(nr, val);
 499         adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
 500         mutex_unlock(&data->update_lock);
 501         return count;
 502 }
 503 static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
 504                            char *buf)
 505 {
 506         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 507         int nr = sensor_attr->index;
 508         struct adm1026_data *data = adm1026_update_device(dev);
 509         return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
 510 }
 511 static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
 512                             const char *buf, size_t count)
 513 {
 514         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 515         int nr = sensor_attr->index;
 516         struct adm1026_data *data = dev_get_drvdata(dev);
 517         struct i2c_client *client = data->client;
 518         long val;
 519         int err;
 520 
 521         err = kstrtol(buf, 10, &val);
 522         if (err)
 523                 return err;
 524 
 525         mutex_lock(&data->update_lock);
 526         data->in_max[nr] = INS_TO_REG(nr, val);
 527         adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
 528         mutex_unlock(&data->update_lock);
 529         return count;
 530 }
 531 
 532 static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
 533 static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
 534 static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
 535 static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
 536 static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
 537 static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
 538 static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
 539 static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
 540 static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
 541 static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
 542 static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
 543 static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
 544 static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
 545 static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
 546 static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
 547 static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
 548 static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
 549 static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
 550 static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
 551 static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
 552 static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
 553 static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7);
 554 static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
 555 static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
 556 static SENSOR_DEVICE_ATTR_RO(in8_input, in, 8);
 557 static SENSOR_DEVICE_ATTR_RW(in8_min, in_min, 8);
 558 static SENSOR_DEVICE_ATTR_RW(in8_max, in_max, 8);
 559 static SENSOR_DEVICE_ATTR_RO(in9_input, in, 9);
 560 static SENSOR_DEVICE_ATTR_RW(in9_min, in_min, 9);
 561 static SENSOR_DEVICE_ATTR_RW(in9_max, in_max, 9);
 562 static SENSOR_DEVICE_ATTR_RO(in10_input, in, 10);
 563 static SENSOR_DEVICE_ATTR_RW(in10_min, in_min, 10);
 564 static SENSOR_DEVICE_ATTR_RW(in10_max, in_max, 10);
 565 static SENSOR_DEVICE_ATTR_RO(in11_input, in, 11);
 566 static SENSOR_DEVICE_ATTR_RW(in11_min, in_min, 11);
 567 static SENSOR_DEVICE_ATTR_RW(in11_max, in_max, 11);
 568 static SENSOR_DEVICE_ATTR_RO(in12_input, in, 12);
 569 static SENSOR_DEVICE_ATTR_RW(in12_min, in_min, 12);
 570 static SENSOR_DEVICE_ATTR_RW(in12_max, in_max, 12);
 571 static SENSOR_DEVICE_ATTR_RO(in13_input, in, 13);
 572 static SENSOR_DEVICE_ATTR_RW(in13_min, in_min, 13);
 573 static SENSOR_DEVICE_ATTR_RW(in13_max, in_max, 13);
 574 static SENSOR_DEVICE_ATTR_RO(in14_input, in, 14);
 575 static SENSOR_DEVICE_ATTR_RW(in14_min, in_min, 14);
 576 static SENSOR_DEVICE_ATTR_RW(in14_max, in_max, 14);
 577 static SENSOR_DEVICE_ATTR_RO(in15_input, in, 15);
 578 static SENSOR_DEVICE_ATTR_RW(in15_min, in_min, 15);
 579 static SENSOR_DEVICE_ATTR_RW(in15_max, in_max, 15);
 580 
 581 static ssize_t in16_show(struct device *dev, struct device_attribute *attr,
 582                          char *buf)
 583 {
 584         struct adm1026_data *data = adm1026_update_device(dev);
 585         return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
 586                 NEG12_OFFSET);
 587 }
 588 static ssize_t in16_min_show(struct device *dev,
 589                              struct device_attribute *attr, char *buf)
 590 {
 591         struct adm1026_data *data = adm1026_update_device(dev);
 592         return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
 593                 - NEG12_OFFSET);
 594 }
 595 static ssize_t in16_min_store(struct device *dev,
 596                               struct device_attribute *attr, const char *buf,
 597                               size_t count)
 598 {
 599         struct adm1026_data *data = dev_get_drvdata(dev);
 600         struct i2c_client *client = data->client;
 601         long val;
 602         int err;
 603 
 604         err = kstrtol(buf, 10, &val);
 605         if (err)
 606                 return err;
 607 
 608         mutex_lock(&data->update_lock);
 609         data->in_min[16] = INS_TO_REG(16,
 610                                       clamp_val(val, INT_MIN,
 611                                                 INT_MAX - NEG12_OFFSET) +
 612                                       NEG12_OFFSET);
 613         adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
 614         mutex_unlock(&data->update_lock);
 615         return count;
 616 }
 617 static ssize_t in16_max_show(struct device *dev,
 618                              struct device_attribute *attr, char *buf)
 619 {
 620         struct adm1026_data *data = adm1026_update_device(dev);
 621         return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
 622                         - NEG12_OFFSET);
 623 }
 624 static ssize_t in16_max_store(struct device *dev,
 625                               struct device_attribute *attr, const char *buf,
 626                               size_t count)
 627 {
 628         struct adm1026_data *data = dev_get_drvdata(dev);
 629         struct i2c_client *client = data->client;
 630         long val;
 631         int err;
 632 
 633         err = kstrtol(buf, 10, &val);
 634         if (err)
 635                 return err;
 636 
 637         mutex_lock(&data->update_lock);
 638         data->in_max[16] = INS_TO_REG(16,
 639                                       clamp_val(val, INT_MIN,
 640                                                 INT_MAX - NEG12_OFFSET) +
 641                                       NEG12_OFFSET);
 642         adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
 643         mutex_unlock(&data->update_lock);
 644         return count;
 645 }
 646 
 647 static SENSOR_DEVICE_ATTR_RO(in16_input, in16, 16);
 648 static SENSOR_DEVICE_ATTR_RW(in16_min, in16_min, 16);
 649 static SENSOR_DEVICE_ATTR_RW(in16_max, in16_max, 16);
 650 
 651 /* Now add fan read/write functions */
 652 
 653 static ssize_t fan_show(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[nr],
 660                 data->fan_div[nr]));
 661 }
 662 static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
 663                             char *buf)
 664 {
 665         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 666         int nr = sensor_attr->index;
 667         struct adm1026_data *data = adm1026_update_device(dev);
 668         return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
 669                 data->fan_div[nr]));
 670 }
 671 static ssize_t fan_min_store(struct device *dev,
 672                              struct device_attribute *attr, const char *buf,
 673                              size_t count)
 674 {
 675         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 676         int nr = sensor_attr->index;
 677         struct adm1026_data *data = dev_get_drvdata(dev);
 678         struct i2c_client *client = data->client;
 679         long val;
 680         int err;
 681 
 682         err = kstrtol(buf, 10, &val);
 683         if (err)
 684                 return err;
 685 
 686         mutex_lock(&data->update_lock);
 687         data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
 688         adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
 689                 data->fan_min[nr]);
 690         mutex_unlock(&data->update_lock);
 691         return count;
 692 }
 693 
 694 static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
 695 static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
 696 static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
 697 static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
 698 static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
 699 static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
 700 static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3);
 701 static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3);
 702 static SENSOR_DEVICE_ATTR_RO(fan5_input, fan, 4);
 703 static SENSOR_DEVICE_ATTR_RW(fan5_min, fan_min, 4);
 704 static SENSOR_DEVICE_ATTR_RO(fan6_input, fan, 5);
 705 static SENSOR_DEVICE_ATTR_RW(fan6_min, fan_min, 5);
 706 static SENSOR_DEVICE_ATTR_RO(fan7_input, fan, 6);
 707 static SENSOR_DEVICE_ATTR_RW(fan7_min, fan_min, 6);
 708 static SENSOR_DEVICE_ATTR_RO(fan8_input, fan, 7);
 709 static SENSOR_DEVICE_ATTR_RW(fan8_min, fan_min, 7);
 710 
 711 /* Adjust fan_min to account for new fan divisor */
 712 static void fixup_fan_min(struct device *dev, int fan, int old_div)
 713 {
 714         struct adm1026_data *data = dev_get_drvdata(dev);
 715         struct i2c_client *client = data->client;
 716         int new_min;
 717         int new_div = data->fan_div[fan];
 718 
 719         /* 0 and 0xff are special.  Don't adjust them */
 720         if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
 721                 return;
 722 
 723         new_min = data->fan_min[fan] * old_div / new_div;
 724         new_min = clamp_val(new_min, 1, 254);
 725         data->fan_min[fan] = new_min;
 726         adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
 727 }
 728 
 729 /* Now add fan_div read/write functions */
 730 static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
 731                             char *buf)
 732 {
 733         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 734         int nr = sensor_attr->index;
 735         struct adm1026_data *data = adm1026_update_device(dev);
 736         return sprintf(buf, "%d\n", data->fan_div[nr]);
 737 }
 738 static ssize_t fan_div_store(struct device *dev,
 739                              struct device_attribute *attr, const char *buf,
 740                              size_t count)
 741 {
 742         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 743         int nr = sensor_attr->index;
 744         struct adm1026_data *data = dev_get_drvdata(dev);
 745         struct i2c_client *client = data->client;
 746         long val;
 747         int orig_div, new_div;
 748         int err;
 749 
 750         err = kstrtol(buf, 10, &val);
 751         if (err)
 752                 return err;
 753 
 754         new_div = DIV_TO_REG(val);
 755 
 756         mutex_lock(&data->update_lock);
 757         orig_div = data->fan_div[nr];
 758         data->fan_div[nr] = DIV_FROM_REG(new_div);
 759 
 760         if (nr < 4) { /* 0 <= nr < 4 */
 761                 adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
 762                                     (DIV_TO_REG(data->fan_div[0]) << 0) |
 763                                     (DIV_TO_REG(data->fan_div[1]) << 2) |
 764                                     (DIV_TO_REG(data->fan_div[2]) << 4) |
 765                                     (DIV_TO_REG(data->fan_div[3]) << 6));
 766         } else { /* 3 < nr < 8 */
 767                 adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
 768                                     (DIV_TO_REG(data->fan_div[4]) << 0) |
 769                                     (DIV_TO_REG(data->fan_div[5]) << 2) |
 770                                     (DIV_TO_REG(data->fan_div[6]) << 4) |
 771                                     (DIV_TO_REG(data->fan_div[7]) << 6));
 772         }
 773 
 774         if (data->fan_div[nr] != orig_div)
 775                 fixup_fan_min(dev, nr, orig_div);
 776 
 777         mutex_unlock(&data->update_lock);
 778         return count;
 779 }
 780 
 781 static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
 782 static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
 783 static SENSOR_DEVICE_ATTR_RW(fan3_div, fan_div, 2);
 784 static SENSOR_DEVICE_ATTR_RW(fan4_div, fan_div, 3);
 785 static SENSOR_DEVICE_ATTR_RW(fan5_div, fan_div, 4);
 786 static SENSOR_DEVICE_ATTR_RW(fan6_div, fan_div, 5);
 787 static SENSOR_DEVICE_ATTR_RW(fan7_div, fan_div, 6);
 788 static SENSOR_DEVICE_ATTR_RW(fan8_div, fan_div, 7);
 789 
 790 /* Temps */
 791 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
 792                          char *buf)
 793 {
 794         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 795         int nr = sensor_attr->index;
 796         struct adm1026_data *data = adm1026_update_device(dev);
 797         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
 798 }
 799 static ssize_t temp_min_show(struct device *dev,
 800                              struct device_attribute *attr, char *buf)
 801 {
 802         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 803         int nr = sensor_attr->index;
 804         struct adm1026_data *data = adm1026_update_device(dev);
 805         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
 806 }
 807 static ssize_t temp_min_store(struct device *dev,
 808                               struct device_attribute *attr, const char *buf,
 809                               size_t count)
 810 {
 811         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 812         int nr = sensor_attr->index;
 813         struct adm1026_data *data = dev_get_drvdata(dev);
 814         struct i2c_client *client = data->client;
 815         long val;
 816         int err;
 817 
 818         err = kstrtol(buf, 10, &val);
 819         if (err)
 820                 return err;
 821 
 822         mutex_lock(&data->update_lock);
 823         data->temp_min[nr] = TEMP_TO_REG(val);
 824         adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
 825                 data->temp_min[nr]);
 826         mutex_unlock(&data->update_lock);
 827         return count;
 828 }
 829 static ssize_t temp_max_show(struct device *dev,
 830                              struct device_attribute *attr, char *buf)
 831 {
 832         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 833         int nr = sensor_attr->index;
 834         struct adm1026_data *data = adm1026_update_device(dev);
 835         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
 836 }
 837 static ssize_t temp_max_store(struct device *dev,
 838                               struct device_attribute *attr, const char *buf,
 839                               size_t count)
 840 {
 841         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 842         int nr = sensor_attr->index;
 843         struct adm1026_data *data = dev_get_drvdata(dev);
 844         struct i2c_client *client = data->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->temp_max[nr] = TEMP_TO_REG(val);
 854         adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
 855                 data->temp_max[nr]);
 856         mutex_unlock(&data->update_lock);
 857         return count;
 858 }
 859 
 860 static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
 861 static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
 862 static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
 863 static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
 864 static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
 865 static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
 866 static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
 867 static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
 868 static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
 869 
 870 static ssize_t temp_offset_show(struct device *dev,
 871                                 struct device_attribute *attr, char *buf)
 872 {
 873         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 874         int nr = sensor_attr->index;
 875         struct adm1026_data *data = adm1026_update_device(dev);
 876         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
 877 }
 878 static ssize_t temp_offset_store(struct device *dev,
 879                                  struct device_attribute *attr,
 880                                  const char *buf, size_t count)
 881 {
 882         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 883         int nr = sensor_attr->index;
 884         struct adm1026_data *data = dev_get_drvdata(dev);
 885         struct i2c_client *client = data->client;
 886         long val;
 887         int err;
 888 
 889         err = kstrtol(buf, 10, &val);
 890         if (err)
 891                 return err;
 892 
 893         mutex_lock(&data->update_lock);
 894         data->temp_offset[nr] = TEMP_TO_REG(val);
 895         adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
 896                 data->temp_offset[nr]);
 897         mutex_unlock(&data->update_lock);
 898         return count;
 899 }
 900 
 901 static SENSOR_DEVICE_ATTR_RW(temp1_offset, temp_offset, 0);
 902 static SENSOR_DEVICE_ATTR_RW(temp2_offset, temp_offset, 1);
 903 static SENSOR_DEVICE_ATTR_RW(temp3_offset, temp_offset, 2);
 904 
 905 static ssize_t temp_auto_point1_temp_hyst_show(struct device *dev,
 906                                                struct device_attribute *attr,
 907                                                char *buf)
 908 {
 909         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 910         int nr = sensor_attr->index;
 911         struct adm1026_data *data = adm1026_update_device(dev);
 912         return sprintf(buf, "%d\n", TEMP_FROM_REG(
 913                 ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
 914 }
 915 static ssize_t temp_auto_point2_temp_show(struct device *dev,
 916                                           struct device_attribute *attr,
 917                                           char *buf)
 918 {
 919         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 920         int nr = sensor_attr->index;
 921         struct adm1026_data *data = adm1026_update_device(dev);
 922         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
 923                 ADM1026_FAN_CONTROL_TEMP_RANGE));
 924 }
 925 static ssize_t temp_auto_point1_temp_show(struct device *dev,
 926                                           struct device_attribute *attr,
 927                                           char *buf)
 928 {
 929         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 930         int nr = sensor_attr->index;
 931         struct adm1026_data *data = adm1026_update_device(dev);
 932         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
 933 }
 934 static ssize_t temp_auto_point1_temp_store(struct device *dev,
 935                                            struct device_attribute *attr,
 936                                            const char *buf, size_t count)
 937 {
 938         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 939         int nr = sensor_attr->index;
 940         struct adm1026_data *data = dev_get_drvdata(dev);
 941         struct i2c_client *client = data->client;
 942         long val;
 943         int err;
 944 
 945         err = kstrtol(buf, 10, &val);
 946         if (err)
 947                 return err;
 948 
 949         mutex_lock(&data->update_lock);
 950         data->temp_tmin[nr] = TEMP_TO_REG(val);
 951         adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
 952                 data->temp_tmin[nr]);
 953         mutex_unlock(&data->update_lock);
 954         return count;
 955 }
 956 
 957 static SENSOR_DEVICE_ATTR_RW(temp1_auto_point1_temp, temp_auto_point1_temp, 0);
 958 static SENSOR_DEVICE_ATTR_RO(temp1_auto_point1_temp_hyst,
 959                              temp_auto_point1_temp_hyst, 0);
 960 static SENSOR_DEVICE_ATTR_RO(temp1_auto_point2_temp, temp_auto_point2_temp, 0);
 961 static SENSOR_DEVICE_ATTR_RW(temp2_auto_point1_temp, temp_auto_point1_temp, 1);
 962 static SENSOR_DEVICE_ATTR_RO(temp2_auto_point1_temp_hyst,
 963                              temp_auto_point1_temp_hyst, 1);
 964 static SENSOR_DEVICE_ATTR_RO(temp2_auto_point2_temp, temp_auto_point2_temp, 1);
 965 static SENSOR_DEVICE_ATTR_RW(temp3_auto_point1_temp, temp_auto_point1_temp, 2);
 966 static SENSOR_DEVICE_ATTR_RO(temp3_auto_point1_temp_hyst,
 967                              temp_auto_point1_temp_hyst, 2);
 968 static SENSOR_DEVICE_ATTR_RO(temp3_auto_point2_temp, temp_auto_point2_temp, 2);
 969 
 970 static ssize_t show_temp_crit_enable(struct device *dev,
 971                 struct device_attribute *attr, char *buf)
 972 {
 973         struct adm1026_data *data = adm1026_update_device(dev);
 974         return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
 975 }
 976 static ssize_t set_temp_crit_enable(struct device *dev,
 977                 struct device_attribute *attr, const char *buf, size_t count)
 978 {
 979         struct adm1026_data *data = dev_get_drvdata(dev);
 980         struct i2c_client *client = data->client;
 981         unsigned long val;
 982         int err;
 983 
 984         err = kstrtoul(buf, 10, &val);
 985         if (err)
 986                 return err;
 987 
 988         if (val > 1)
 989                 return -EINVAL;
 990 
 991         mutex_lock(&data->update_lock);
 992         data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
 993         adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
 994         mutex_unlock(&data->update_lock);
 995 
 996         return count;
 997 }
 998 
 999 static DEVICE_ATTR(temp1_crit_enable, 0644, show_temp_crit_enable,
1000                    set_temp_crit_enable);
1001 static DEVICE_ATTR(temp2_crit_enable, 0644, show_temp_crit_enable,
1002                    set_temp_crit_enable);
1003 static DEVICE_ATTR(temp3_crit_enable, 0644, show_temp_crit_enable,
1004                    set_temp_crit_enable);
1005 
1006 static ssize_t temp_crit_show(struct device *dev,
1007                               struct device_attribute *attr, 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_crit[nr]));
1013 }
1014 static ssize_t temp_crit_store(struct device *dev,
1015                                struct device_attribute *attr, const char *buf,
1016                                size_t count)
1017 {
1018         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1019         int nr = sensor_attr->index;
1020         struct adm1026_data *data = dev_get_drvdata(dev);
1021         struct i2c_client *client = data->client;
1022         long val;
1023         int err;
1024 
1025         err = kstrtol(buf, 10, &val);
1026         if (err)
1027                 return err;
1028 
1029         mutex_lock(&data->update_lock);
1030         data->temp_crit[nr] = TEMP_TO_REG(val);
1031         adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1032                 data->temp_crit[nr]);
1033         mutex_unlock(&data->update_lock);
1034         return count;
1035 }
1036 
1037 static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp_crit, 0);
1038 static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp_crit, 1);
1039 static SENSOR_DEVICE_ATTR_RW(temp3_crit, temp_crit, 2);
1040 
1041 static ssize_t analog_out_show(struct device *dev,
1042                                struct device_attribute *attr, char *buf)
1043 {
1044         struct adm1026_data *data = adm1026_update_device(dev);
1045         return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1046 }
1047 static ssize_t analog_out_store(struct device *dev,
1048                                 struct device_attribute *attr,
1049                                 const char *buf, size_t count)
1050 {
1051         struct adm1026_data *data = dev_get_drvdata(dev);
1052         struct i2c_client *client = data->client;
1053         long val;
1054         int err;
1055 
1056         err = kstrtol(buf, 10, &val);
1057         if (err)
1058                 return err;
1059 
1060         mutex_lock(&data->update_lock);
1061         data->analog_out = DAC_TO_REG(val);
1062         adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1063         mutex_unlock(&data->update_lock);
1064         return count;
1065 }
1066 
1067 static DEVICE_ATTR_RW(analog_out);
1068 
1069 static ssize_t cpu0_vid_show(struct device *dev,
1070                              struct device_attribute *attr, char *buf)
1071 {
1072         struct adm1026_data *data = adm1026_update_device(dev);
1073         int vid = (data->gpio >> 11) & 0x1f;
1074 
1075         dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1076         return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1077 }
1078 
1079 static DEVICE_ATTR_RO(cpu0_vid);
1080 
1081 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1082                         char *buf)
1083 {
1084         struct adm1026_data *data = dev_get_drvdata(dev);
1085         return sprintf(buf, "%d\n", data->vrm);
1086 }
1087 
1088 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1089                          const char *buf, size_t count)
1090 {
1091         struct adm1026_data *data = dev_get_drvdata(dev);
1092         unsigned long val;
1093         int err;
1094 
1095         err = kstrtoul(buf, 10, &val);
1096         if (err)
1097                 return err;
1098 
1099         if (val > 255)
1100                 return -EINVAL;
1101 
1102         data->vrm = val;
1103         return count;
1104 }
1105 
1106 static DEVICE_ATTR_RW(vrm);
1107 
1108 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1109                            char *buf)
1110 {
1111         struct adm1026_data *data = adm1026_update_device(dev);
1112         return sprintf(buf, "%ld\n", data->alarms);
1113 }
1114 
1115 static DEVICE_ATTR_RO(alarms);
1116 
1117 static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
1118                           char *buf)
1119 {
1120         struct adm1026_data *data = adm1026_update_device(dev);
1121         int bitnr = to_sensor_dev_attr(attr)->index;
1122         return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1123 }
1124 
1125 static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 0);
1126 static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 1);
1127 static SENSOR_DEVICE_ATTR_RO(in9_alarm, alarm, 1);
1128 static SENSOR_DEVICE_ATTR_RO(in11_alarm, alarm, 2);
1129 static SENSOR_DEVICE_ATTR_RO(in12_alarm, alarm, 3);
1130 static SENSOR_DEVICE_ATTR_RO(in13_alarm, alarm, 4);
1131 static SENSOR_DEVICE_ATTR_RO(in14_alarm, alarm, 5);
1132 static SENSOR_DEVICE_ATTR_RO(in15_alarm, alarm, 6);
1133 static SENSOR_DEVICE_ATTR_RO(in16_alarm, alarm, 7);
1134 static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 8);
1135 static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 9);
1136 static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 10);
1137 static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 11);
1138 static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 12);
1139 static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 13);
1140 static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 14);
1141 static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 15);
1142 static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 16);
1143 static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 17);
1144 static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 18);
1145 static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, 19);
1146 static SENSOR_DEVICE_ATTR_RO(fan5_alarm, alarm, 20);
1147 static SENSOR_DEVICE_ATTR_RO(fan6_alarm, alarm, 21);
1148 static SENSOR_DEVICE_ATTR_RO(fan7_alarm, alarm, 22);
1149 static SENSOR_DEVICE_ATTR_RO(fan8_alarm, alarm, 23);
1150 static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 24);
1151 static SENSOR_DEVICE_ATTR_RO(in10_alarm, alarm, 25);
1152 static SENSOR_DEVICE_ATTR_RO(in8_alarm, alarm, 26);
1153 
1154 static ssize_t alarm_mask_show(struct device *dev,
1155                                struct device_attribute *attr, char *buf)
1156 {
1157         struct adm1026_data *data = adm1026_update_device(dev);
1158         return sprintf(buf, "%ld\n", data->alarm_mask);
1159 }
1160 static ssize_t alarm_mask_store(struct device *dev,
1161                                 struct device_attribute *attr,
1162                                 const char *buf, size_t count)
1163 {
1164         struct adm1026_data *data = dev_get_drvdata(dev);
1165         struct i2c_client *client = data->client;
1166         unsigned long mask;
1167         long val;
1168         int err;
1169 
1170         err = kstrtol(buf, 10, &val);
1171         if (err)
1172                 return err;
1173 
1174         mutex_lock(&data->update_lock);
1175         data->alarm_mask = val & 0x7fffffff;
1176         mask = data->alarm_mask
1177                 | (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1178         adm1026_write_value(client, ADM1026_REG_MASK1,
1179                 mask & 0xff);
1180         mask >>= 8;
1181         adm1026_write_value(client, ADM1026_REG_MASK2,
1182                 mask & 0xff);
1183         mask >>= 8;
1184         adm1026_write_value(client, ADM1026_REG_MASK3,
1185                 mask & 0xff);
1186         mask >>= 8;
1187         adm1026_write_value(client, ADM1026_REG_MASK4,
1188                 mask & 0xff);
1189         mutex_unlock(&data->update_lock);
1190         return count;
1191 }
1192 
1193 static DEVICE_ATTR_RW(alarm_mask);
1194 
1195 static ssize_t gpio_show(struct device *dev, struct device_attribute *attr,
1196                          char *buf)
1197 {
1198         struct adm1026_data *data = adm1026_update_device(dev);
1199         return sprintf(buf, "%ld\n", data->gpio);
1200 }
1201 static ssize_t gpio_store(struct device *dev, struct device_attribute *attr,
1202                           const char *buf, size_t count)
1203 {
1204         struct adm1026_data *data = dev_get_drvdata(dev);
1205         struct i2c_client *client = data->client;
1206         long gpio;
1207         long val;
1208         int err;
1209 
1210         err = kstrtol(buf, 10, &val);
1211         if (err)
1212                 return err;
1213 
1214         mutex_lock(&data->update_lock);
1215         data->gpio = val & 0x1ffff;
1216         gpio = data->gpio;
1217         adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1218         gpio >>= 8;
1219         adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1220         gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1221         adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1222         mutex_unlock(&data->update_lock);
1223         return count;
1224 }
1225 
1226 static DEVICE_ATTR_RW(gpio);
1227 
1228 static ssize_t gpio_mask_show(struct device *dev,
1229                               struct device_attribute *attr,
1230                               char *buf)
1231 {
1232         struct adm1026_data *data = adm1026_update_device(dev);
1233         return sprintf(buf, "%ld\n", data->gpio_mask);
1234 }
1235 static ssize_t gpio_mask_store(struct device *dev,
1236                                struct device_attribute *attr, const char *buf,
1237                                size_t count)
1238 {
1239         struct adm1026_data *data = dev_get_drvdata(dev);
1240         struct i2c_client *client = data->client;
1241         long mask;
1242         long val;
1243         int err;
1244 
1245         err = kstrtol(buf, 10, &val);
1246         if (err)
1247                 return err;
1248 
1249         mutex_lock(&data->update_lock);
1250         data->gpio_mask = val & 0x1ffff;
1251         mask = data->gpio_mask;
1252         adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1253         mask >>= 8;
1254         adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1255         mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1256         adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1257         mutex_unlock(&data->update_lock);
1258         return count;
1259 }
1260 
1261 static DEVICE_ATTR_RW(gpio_mask);
1262 
1263 static ssize_t pwm1_show(struct device *dev, struct device_attribute *attr,
1264                          char *buf)
1265 {
1266         struct adm1026_data *data = adm1026_update_device(dev);
1267         return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1268 }
1269 
1270 static ssize_t pwm1_store(struct device *dev, struct device_attribute *attr,
1271                           const char *buf, size_t count)
1272 {
1273         struct adm1026_data *data = dev_get_drvdata(dev);
1274         struct i2c_client *client = data->client;
1275 
1276         if (data->pwm1.enable == 1) {
1277                 long val;
1278                 int err;
1279 
1280                 err = kstrtol(buf, 10, &val);
1281                 if (err)
1282                         return err;
1283 
1284                 mutex_lock(&data->update_lock);
1285                 data->pwm1.pwm = PWM_TO_REG(val);
1286                 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1287                 mutex_unlock(&data->update_lock);
1288         }
1289         return count;
1290 }
1291 
1292 static ssize_t temp1_auto_point1_pwm_show(struct device *dev,
1293                                           struct device_attribute *attr,
1294                                           char *buf)
1295 {
1296         struct adm1026_data *data = adm1026_update_device(dev);
1297         return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1298 }
1299 
1300 static ssize_t temp1_auto_point1_pwm_store(struct device *dev,
1301                                            struct device_attribute *attr,
1302                                            const char *buf, size_t count)
1303 {
1304         struct adm1026_data *data = dev_get_drvdata(dev);
1305         struct i2c_client *client = data->client;
1306         unsigned long val;
1307         int err;
1308 
1309         err = kstrtoul(buf, 10, &val);
1310         if (err)
1311                 return err;
1312 
1313         mutex_lock(&data->update_lock);
1314         data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
1315         if (data->pwm1.enable == 2) { /* apply immediately */
1316                 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1317                         PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1318                 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1319         }
1320         mutex_unlock(&data->update_lock);
1321         return count;
1322 }
1323 
1324 static ssize_t temp1_auto_point2_pwm_show(struct device *dev,
1325                                           struct device_attribute *attr,
1326                                           char *buf)
1327 {
1328         return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1329 }
1330 
1331 static ssize_t pwm1_enable_show(struct device *dev,
1332                                 struct device_attribute *attr, char *buf)
1333 {
1334         struct adm1026_data *data = adm1026_update_device(dev);
1335         return sprintf(buf, "%d\n", data->pwm1.enable);
1336 }
1337 
1338 static ssize_t pwm1_enable_store(struct device *dev,
1339                                  struct device_attribute *attr,
1340                                  const char *buf, size_t count)
1341 {
1342         struct adm1026_data *data = dev_get_drvdata(dev);
1343         struct i2c_client *client = data->client;
1344         int old_enable;
1345         unsigned long val;
1346         int err;
1347 
1348         err = kstrtoul(buf, 10, &val);
1349         if (err)
1350                 return err;
1351 
1352         if (val >= 3)
1353                 return -EINVAL;
1354 
1355         mutex_lock(&data->update_lock);
1356         old_enable = data->pwm1.enable;
1357         data->pwm1.enable = val;
1358         data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1359                         | ((val == 2) ? CFG1_PWM_AFC : 0);
1360         adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1361         if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1362                 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1363                         PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1364                 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1365         } else if (!((old_enable == 1) && (val == 1))) {
1366                 /* set pwm to safe value */
1367                 data->pwm1.pwm = 255;
1368                 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1369         }
1370         mutex_unlock(&data->update_lock);
1371 
1372         return count;
1373 }
1374 
1375 /* enable PWM fan control */
1376 static DEVICE_ATTR_RW(pwm1);
1377 static DEVICE_ATTR(pwm2, 0644, pwm1_show, pwm1_store);
1378 static DEVICE_ATTR(pwm3, 0644, pwm1_show, pwm1_store);
1379 static DEVICE_ATTR_RW(pwm1_enable);
1380 static DEVICE_ATTR(pwm2_enable, 0644, pwm1_enable_show,
1381                    pwm1_enable_store);
1382 static DEVICE_ATTR(pwm3_enable, 0644, pwm1_enable_show,
1383                    pwm1_enable_store);
1384 static DEVICE_ATTR_RW(temp1_auto_point1_pwm);
1385 static DEVICE_ATTR(temp2_auto_point1_pwm, 0644,
1386                    temp1_auto_point1_pwm_show, temp1_auto_point1_pwm_store);
1387 static DEVICE_ATTR(temp3_auto_point1_pwm, 0644,
1388                    temp1_auto_point1_pwm_show, temp1_auto_point1_pwm_store);
1389 
1390 static DEVICE_ATTR_RO(temp1_auto_point2_pwm);
1391 static DEVICE_ATTR(temp2_auto_point2_pwm, 0444, temp1_auto_point2_pwm_show,
1392                    NULL);
1393 static DEVICE_ATTR(temp3_auto_point2_pwm, 0444, temp1_auto_point2_pwm_show,
1394                    NULL);
1395 
1396 static struct attribute *adm1026_attributes[] = {
1397         &sensor_dev_attr_in0_input.dev_attr.attr,
1398         &sensor_dev_attr_in0_max.dev_attr.attr,
1399         &sensor_dev_attr_in0_min.dev_attr.attr,
1400         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1401         &sensor_dev_attr_in1_input.dev_attr.attr,
1402         &sensor_dev_attr_in1_max.dev_attr.attr,
1403         &sensor_dev_attr_in1_min.dev_attr.attr,
1404         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1405         &sensor_dev_attr_in2_input.dev_attr.attr,
1406         &sensor_dev_attr_in2_max.dev_attr.attr,
1407         &sensor_dev_attr_in2_min.dev_attr.attr,
1408         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1409         &sensor_dev_attr_in3_input.dev_attr.attr,
1410         &sensor_dev_attr_in3_max.dev_attr.attr,
1411         &sensor_dev_attr_in3_min.dev_attr.attr,
1412         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1413         &sensor_dev_attr_in4_input.dev_attr.attr,
1414         &sensor_dev_attr_in4_max.dev_attr.attr,
1415         &sensor_dev_attr_in4_min.dev_attr.attr,
1416         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1417         &sensor_dev_attr_in5_input.dev_attr.attr,
1418         &sensor_dev_attr_in5_max.dev_attr.attr,
1419         &sensor_dev_attr_in5_min.dev_attr.attr,
1420         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1421         &sensor_dev_attr_in6_input.dev_attr.attr,
1422         &sensor_dev_attr_in6_max.dev_attr.attr,
1423         &sensor_dev_attr_in6_min.dev_attr.attr,
1424         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1425         &sensor_dev_attr_in7_input.dev_attr.attr,
1426         &sensor_dev_attr_in7_max.dev_attr.attr,
1427         &sensor_dev_attr_in7_min.dev_attr.attr,
1428         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1429         &sensor_dev_attr_in10_input.dev_attr.attr,
1430         &sensor_dev_attr_in10_max.dev_attr.attr,
1431         &sensor_dev_attr_in10_min.dev_attr.attr,
1432         &sensor_dev_attr_in10_alarm.dev_attr.attr,
1433         &sensor_dev_attr_in11_input.dev_attr.attr,
1434         &sensor_dev_attr_in11_max.dev_attr.attr,
1435         &sensor_dev_attr_in11_min.dev_attr.attr,
1436         &sensor_dev_attr_in11_alarm.dev_attr.attr,
1437         &sensor_dev_attr_in12_input.dev_attr.attr,
1438         &sensor_dev_attr_in12_max.dev_attr.attr,
1439         &sensor_dev_attr_in12_min.dev_attr.attr,
1440         &sensor_dev_attr_in12_alarm.dev_attr.attr,
1441         &sensor_dev_attr_in13_input.dev_attr.attr,
1442         &sensor_dev_attr_in13_max.dev_attr.attr,
1443         &sensor_dev_attr_in13_min.dev_attr.attr,
1444         &sensor_dev_attr_in13_alarm.dev_attr.attr,
1445         &sensor_dev_attr_in14_input.dev_attr.attr,
1446         &sensor_dev_attr_in14_max.dev_attr.attr,
1447         &sensor_dev_attr_in14_min.dev_attr.attr,
1448         &sensor_dev_attr_in14_alarm.dev_attr.attr,
1449         &sensor_dev_attr_in15_input.dev_attr.attr,
1450         &sensor_dev_attr_in15_max.dev_attr.attr,
1451         &sensor_dev_attr_in15_min.dev_attr.attr,
1452         &sensor_dev_attr_in15_alarm.dev_attr.attr,
1453         &sensor_dev_attr_in16_input.dev_attr.attr,
1454         &sensor_dev_attr_in16_max.dev_attr.attr,
1455         &sensor_dev_attr_in16_min.dev_attr.attr,
1456         &sensor_dev_attr_in16_alarm.dev_attr.attr,
1457         &sensor_dev_attr_fan1_input.dev_attr.attr,
1458         &sensor_dev_attr_fan1_div.dev_attr.attr,
1459         &sensor_dev_attr_fan1_min.dev_attr.attr,
1460         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1461         &sensor_dev_attr_fan2_input.dev_attr.attr,
1462         &sensor_dev_attr_fan2_div.dev_attr.attr,
1463         &sensor_dev_attr_fan2_min.dev_attr.attr,
1464         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1465         &sensor_dev_attr_fan3_input.dev_attr.attr,
1466         &sensor_dev_attr_fan3_div.dev_attr.attr,
1467         &sensor_dev_attr_fan3_min.dev_attr.attr,
1468         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1469         &sensor_dev_attr_fan4_input.dev_attr.attr,
1470         &sensor_dev_attr_fan4_div.dev_attr.attr,
1471         &sensor_dev_attr_fan4_min.dev_attr.attr,
1472         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1473         &sensor_dev_attr_fan5_input.dev_attr.attr,
1474         &sensor_dev_attr_fan5_div.dev_attr.attr,
1475         &sensor_dev_attr_fan5_min.dev_attr.attr,
1476         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1477         &sensor_dev_attr_fan6_input.dev_attr.attr,
1478         &sensor_dev_attr_fan6_div.dev_attr.attr,
1479         &sensor_dev_attr_fan6_min.dev_attr.attr,
1480         &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1481         &sensor_dev_attr_fan7_input.dev_attr.attr,
1482         &sensor_dev_attr_fan7_div.dev_attr.attr,
1483         &sensor_dev_attr_fan7_min.dev_attr.attr,
1484         &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1485         &sensor_dev_attr_fan8_input.dev_attr.attr,
1486         &sensor_dev_attr_fan8_div.dev_attr.attr,
1487         &sensor_dev_attr_fan8_min.dev_attr.attr,
1488         &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1489         &sensor_dev_attr_temp1_input.dev_attr.attr,
1490         &sensor_dev_attr_temp1_max.dev_attr.attr,
1491         &sensor_dev_attr_temp1_min.dev_attr.attr,
1492         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1493         &sensor_dev_attr_temp2_input.dev_attr.attr,
1494         &sensor_dev_attr_temp2_max.dev_attr.attr,
1495         &sensor_dev_attr_temp2_min.dev_attr.attr,
1496         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1497         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1498         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1499         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1500         &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1501         &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1502         &sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1503         &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1504         &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1505         &sensor_dev_attr_temp1_crit.dev_attr.attr,
1506         &sensor_dev_attr_temp2_crit.dev_attr.attr,
1507         &dev_attr_temp1_crit_enable.attr,
1508         &dev_attr_temp2_crit_enable.attr,
1509         &dev_attr_cpu0_vid.attr,
1510         &dev_attr_vrm.attr,
1511         &dev_attr_alarms.attr,
1512         &dev_attr_alarm_mask.attr,
1513         &dev_attr_gpio.attr,
1514         &dev_attr_gpio_mask.attr,
1515         &dev_attr_pwm1.attr,
1516         &dev_attr_pwm2.attr,
1517         &dev_attr_pwm3.attr,
1518         &dev_attr_pwm1_enable.attr,
1519         &dev_attr_pwm2_enable.attr,
1520         &dev_attr_pwm3_enable.attr,
1521         &dev_attr_temp1_auto_point1_pwm.attr,
1522         &dev_attr_temp2_auto_point1_pwm.attr,
1523         &dev_attr_temp1_auto_point2_pwm.attr,
1524         &dev_attr_temp2_auto_point2_pwm.attr,
1525         &dev_attr_analog_out.attr,
1526         NULL
1527 };
1528 
1529 static const struct attribute_group adm1026_group = {
1530         .attrs = adm1026_attributes,
1531 };
1532 
1533 static struct attribute *adm1026_attributes_temp3[] = {
1534         &sensor_dev_attr_temp3_input.dev_attr.attr,
1535         &sensor_dev_attr_temp3_max.dev_attr.attr,
1536         &sensor_dev_attr_temp3_min.dev_attr.attr,
1537         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1538         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1539         &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1540         &sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1541         &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1542         &sensor_dev_attr_temp3_crit.dev_attr.attr,
1543         &dev_attr_temp3_crit_enable.attr,
1544         &dev_attr_temp3_auto_point1_pwm.attr,
1545         &dev_attr_temp3_auto_point2_pwm.attr,
1546         NULL
1547 };
1548 
1549 static const struct attribute_group adm1026_group_temp3 = {
1550         .attrs = adm1026_attributes_temp3,
1551 };
1552 
1553 static struct attribute *adm1026_attributes_in8_9[] = {
1554         &sensor_dev_attr_in8_input.dev_attr.attr,
1555         &sensor_dev_attr_in8_max.dev_attr.attr,
1556         &sensor_dev_attr_in8_min.dev_attr.attr,
1557         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1558         &sensor_dev_attr_in9_input.dev_attr.attr,
1559         &sensor_dev_attr_in9_max.dev_attr.attr,
1560         &sensor_dev_attr_in9_min.dev_attr.attr,
1561         &sensor_dev_attr_in9_alarm.dev_attr.attr,
1562         NULL
1563 };
1564 
1565 static const struct attribute_group adm1026_group_in8_9 = {
1566         .attrs = adm1026_attributes_in8_9,
1567 };
1568 
1569 /* Return 0 if detection is successful, -ENODEV otherwise */
1570 static int adm1026_detect(struct i2c_client *client,
1571                           struct i2c_board_info *info)
1572 {
1573         struct i2c_adapter *adapter = client->adapter;
1574         int address = client->addr;
1575         int company, verstep;
1576 
1577         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1578                 /* We need to be able to do byte I/O */
1579                 return -ENODEV;
1580         }
1581 
1582         /* Now, we do the remaining detection. */
1583 
1584         company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1585         verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1586 
1587         dev_dbg(&adapter->dev,
1588                 "Detecting device at %d,0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1589                 i2c_adapter_id(client->adapter), client->addr,
1590                 company, verstep);
1591 
1592         /* Determine the chip type. */
1593         dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1594                 i2c_adapter_id(adapter), address);
1595         if (company == ADM1026_COMPANY_ANALOG_DEV
1596             && verstep == ADM1026_VERSTEP_ADM1026) {
1597                 /* Analog Devices ADM1026 */
1598         } else if (company == ADM1026_COMPANY_ANALOG_DEV
1599                 && (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1600                 dev_err(&adapter->dev,
1601                         "Unrecognized stepping 0x%02x. Defaulting to ADM1026.\n",
1602                         verstep);
1603         } else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1604                 dev_err(&adapter->dev,
1605                         "Found version/stepping 0x%02x. Assuming generic ADM1026.\n",
1606                         verstep);
1607         } else {
1608                 dev_dbg(&adapter->dev, "Autodetection failed\n");
1609                 /* Not an ADM1026... */
1610                 return -ENODEV;
1611         }
1612 
1613         strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1614 
1615         return 0;
1616 }
1617 
1618 static void adm1026_print_gpio(struct i2c_client *client)
1619 {
1620         struct adm1026_data *data = i2c_get_clientdata(client);
1621         int i;
1622 
1623         dev_dbg(&client->dev, "GPIO config is:\n");
1624         for (i = 0; i <= 7; ++i) {
1625                 if (data->config2 & (1 << i)) {
1626                         dev_dbg(&client->dev, "\t%sGP%s%d\n",
1627                                 data->gpio_config[i] & 0x02 ? "" : "!",
1628                                 data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1629                                 i);
1630                 } else {
1631                         dev_dbg(&client->dev, "\tFAN%d\n", i);
1632                 }
1633         }
1634         for (i = 8; i <= 15; ++i) {
1635                 dev_dbg(&client->dev, "\t%sGP%s%d\n",
1636                         data->gpio_config[i] & 0x02 ? "" : "!",
1637                         data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1638                         i);
1639         }
1640         if (data->config3 & CFG3_GPIO16_ENABLE) {
1641                 dev_dbg(&client->dev, "\t%sGP%s16\n",
1642                         data->gpio_config[16] & 0x02 ? "" : "!",
1643                         data->gpio_config[16] & 0x01 ? "OUT" : "IN");
1644         } else {
1645                 /* GPIO16 is THERM */
1646                 dev_dbg(&client->dev, "\tTHERM\n");
1647         }
1648 }
1649 
1650 static void adm1026_fixup_gpio(struct i2c_client *client)
1651 {
1652         struct adm1026_data *data = i2c_get_clientdata(client);
1653         int i;
1654         int value;
1655 
1656         /* Make the changes requested. */
1657         /*
1658          * We may need to unlock/stop monitoring or soft-reset the
1659          *    chip before we can make changes.  This hasn't been
1660          *    tested much.  FIXME
1661          */
1662 
1663         /* Make outputs */
1664         for (i = 0; i <= 16; ++i) {
1665                 if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
1666                         data->gpio_config[gpio_output[i]] |= 0x01;
1667                 /* if GPIO0-7 is output, it isn't a FAN tach */
1668                 if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
1669                         data->config2 |= 1 << gpio_output[i];
1670         }
1671 
1672         /* Input overrides output */
1673         for (i = 0; i <= 16; ++i) {
1674                 if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
1675                         data->gpio_config[gpio_input[i]] &= ~0x01;
1676                 /* if GPIO0-7 is input, it isn't a FAN tach */
1677                 if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
1678                         data->config2 |= 1 << gpio_input[i];
1679         }
1680 
1681         /* Inverted */
1682         for (i = 0; i <= 16; ++i) {
1683                 if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
1684                         data->gpio_config[gpio_inverted[i]] &= ~0x02;
1685         }
1686 
1687         /* Normal overrides inverted */
1688         for (i = 0; i <= 16; ++i) {
1689                 if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
1690                         data->gpio_config[gpio_normal[i]] |= 0x02;
1691         }
1692 
1693         /* Fan overrides input and output */
1694         for (i = 0; i <= 7; ++i) {
1695                 if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
1696                         data->config2 &= ~(1 << gpio_fan[i]);
1697         }
1698 
1699         /* Write new configs to registers */
1700         adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
1701         data->config3 = (data->config3 & 0x3f)
1702                         | ((data->gpio_config[16] & 0x03) << 6);
1703         adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
1704         for (i = 15, value = 0; i >= 0; --i) {
1705                 value <<= 2;
1706                 value |= data->gpio_config[i] & 0x03;
1707                 if ((i & 0x03) == 0) {
1708                         adm1026_write_value(client,
1709                                         ADM1026_REG_GPIO_CFG_0_3 + i/4,
1710                                         value);
1711                         value = 0;
1712                 }
1713         }
1714 
1715         /* Print the new config */
1716         adm1026_print_gpio(client);
1717 }
1718 
1719 static void adm1026_init_client(struct i2c_client *client)
1720 {
1721         int value, i;
1722         struct adm1026_data *data = i2c_get_clientdata(client);
1723 
1724         dev_dbg(&client->dev, "Initializing device\n");
1725         /* Read chip config */
1726         data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1727         data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
1728         data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
1729 
1730         /* Inform user of chip config */
1731         dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
1732                 data->config1);
1733         if ((data->config1 & CFG1_MONITOR) == 0) {
1734                 dev_dbg(&client->dev,
1735                         "Monitoring not currently enabled.\n");
1736         }
1737         if (data->config1 & CFG1_INT_ENABLE) {
1738                 dev_dbg(&client->dev,
1739                         "SMBALERT interrupts are enabled.\n");
1740         }
1741         if (data->config1 & CFG1_AIN8_9) {
1742                 dev_dbg(&client->dev,
1743                         "in8 and in9 enabled. temp3 disabled.\n");
1744         } else {
1745                 dev_dbg(&client->dev,
1746                         "temp3 enabled.  in8 and in9 disabled.\n");
1747         }
1748         if (data->config1 & CFG1_THERM_HOT) {
1749                 dev_dbg(&client->dev,
1750                         "Automatic THERM, PWM, and temp limits enabled.\n");
1751         }
1752 
1753         if (data->config3 & CFG3_GPIO16_ENABLE) {
1754                 dev_dbg(&client->dev,
1755                         "GPIO16 enabled.  THERM pin disabled.\n");
1756         } else {
1757                 dev_dbg(&client->dev,
1758                         "THERM pin enabled.  GPIO16 disabled.\n");
1759         }
1760         if (data->config3 & CFG3_VREF_250)
1761                 dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
1762         else
1763                 dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
1764         /* Read and pick apart the existing GPIO configuration */
1765         value = 0;
1766         for (i = 0; i <= 15; ++i) {
1767                 if ((i & 0x03) == 0) {
1768                         value = adm1026_read_value(client,
1769                                         ADM1026_REG_GPIO_CFG_0_3 + i / 4);
1770                 }
1771                 data->gpio_config[i] = value & 0x03;
1772                 value >>= 2;
1773         }
1774         data->gpio_config[16] = (data->config3 >> 6) & 0x03;
1775 
1776         /* ... and then print it */
1777         adm1026_print_gpio(client);
1778 
1779         /*
1780          * If the user asks us to reprogram the GPIO config, then
1781          * do it now.
1782          */
1783         if (gpio_input[0] != -1 || gpio_output[0] != -1
1784                 || gpio_inverted[0] != -1 || gpio_normal[0] != -1
1785                 || gpio_fan[0] != -1) {
1786                 adm1026_fixup_gpio(client);
1787         }
1788 
1789         /*
1790          * WE INTENTIONALLY make no changes to the limits,
1791          *   offsets, pwms, fans and zones.  If they were
1792          *   configured, we don't want to mess with them.
1793          *   If they weren't, the default is 100% PWM, no
1794          *   control and will suffice until 'sensors -s'
1795          *   can be run by the user.  We DO set the default
1796          *   value for pwm1.auto_pwm_min to its maximum
1797          *   so that enabling automatic pwm fan control
1798          *   without first setting a value for pwm1.auto_pwm_min
1799          *   will not result in potentially dangerous fan speed decrease.
1800          */
1801         data->pwm1.auto_pwm_min = 255;
1802         /* Start monitoring */
1803         value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1804         /* Set MONITOR, clear interrupt acknowledge and s/w reset */
1805         value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
1806         dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1807         data->config1 = value;
1808         adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
1809 
1810         /* initialize fan_div[] to hardware defaults */
1811         value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
1812                 (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
1813         for (i = 0; i <= 7; ++i) {
1814                 data->fan_div[i] = DIV_FROM_REG(value & 0x03);
1815                 value >>= 2;
1816         }
1817 }
1818 
1819 static int adm1026_probe(struct i2c_client *client,
1820                          const struct i2c_device_id *id)
1821 {
1822         struct device *dev = &client->dev;
1823         struct device *hwmon_dev;
1824         struct adm1026_data *data;
1825 
1826         data = devm_kzalloc(dev, sizeof(struct adm1026_data), GFP_KERNEL);
1827         if (!data)
1828                 return -ENOMEM;
1829 
1830         i2c_set_clientdata(client, data);
1831         data->client = client;
1832         mutex_init(&data->update_lock);
1833 
1834         /* Set the VRM version */
1835         data->vrm = vid_which_vrm();
1836 
1837         /* Initialize the ADM1026 chip */
1838         adm1026_init_client(client);
1839 
1840         /* sysfs hooks */
1841         data->groups[0] = &adm1026_group;
1842         if (data->config1 & CFG1_AIN8_9)
1843                 data->groups[1] = &adm1026_group_in8_9;
1844         else
1845                 data->groups[1] = &adm1026_group_temp3;
1846 
1847         hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1848                                                            data, data->groups);
1849         return PTR_ERR_OR_ZERO(hwmon_dev);
1850 }
1851 
1852 static const struct i2c_device_id adm1026_id[] = {
1853         { "adm1026", 0 },
1854         { }
1855 };
1856 MODULE_DEVICE_TABLE(i2c, adm1026_id);
1857 
1858 static struct i2c_driver adm1026_driver = {
1859         .class          = I2C_CLASS_HWMON,
1860         .driver = {
1861                 .name   = "adm1026",
1862         },
1863         .probe          = adm1026_probe,
1864         .id_table       = adm1026_id,
1865         .detect         = adm1026_detect,
1866         .address_list   = normal_i2c,
1867 };
1868 
1869 module_i2c_driver(adm1026_driver);
1870 
1871 MODULE_LICENSE("GPL");
1872 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1873               "Justin Thiessen <jthiessen@penguincomputing.com>");
1874 MODULE_DESCRIPTION("ADM1026 driver");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/hwmon/adm1026.c

DEFINITIONS
