1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027, 4 * and SCH5127 Super-I/O chips integrated hardware monitoring 5 * features. 6 * Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com> 7 * 8 * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access 9 * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus 10 * if a SCH311x or SCH5127 chip is found. Both types of chips have very 11 * similar hardware monitoring capabilities but differ in the way they can be 12 * accessed. 13 */ 14 15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/slab.h> 20 #include <linux/jiffies.h> 21 #include <linux/i2c.h> 22 #include <linux/platform_device.h> 23 #include <linux/hwmon.h> 24 #include <linux/hwmon-sysfs.h> 25 #include <linux/hwmon-vid.h> 26 #include <linux/err.h> 27 #include <linux/mutex.h> 28 #include <linux/acpi.h> 29 #include <linux/io.h> 30 31 /* ISA device, if found */ 32 static struct platform_device *pdev; 33 34 /* Module load parameters */ 35 static bool force_start; 36 module_param(force_start, bool, 0); 37 MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs"); 38 39 static unsigned short force_id; 40 module_param(force_id, ushort, 0); 41 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 42 43 static bool probe_all_addr; 44 module_param(probe_all_addr, bool, 0); 45 MODULE_PARM_DESC(probe_all_addr, 46 "Include probing of non-standard LPC addresses"); 47 48 /* Addresses to scan */ 49 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END}; 50 51 enum chips { dme1737, sch5027, sch311x, sch5127 }; 52 53 #define DO_REPORT "Please report to the driver maintainer." 54 55 /* --------------------------------------------------------------------- 56 * Registers 57 * 58 * The sensors are defined as follows: 59 * 60 * Voltages Temperatures 61 * -------- ------------ 62 * in0 +5VTR (+5V stdby) temp1 Remote diode 1 63 * in1 Vccp (proc core) temp2 Internal temp 64 * in2 VCC (internal +3.3V) temp3 Remote diode 2 65 * in3 +5V 66 * in4 +12V 67 * in5 VTR (+3.3V stby) 68 * in6 Vbat 69 * in7 Vtrip (sch5127 only) 70 * 71 * --------------------------------------------------------------------- */ 72 73 /* Voltages (in) numbered 0-7 (ix) */ 74 #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \ 75 (ix) < 7 ? 0x94 + (ix) : \ 76 0x1f) 77 #define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \ 78 : 0x91 + (ix) * 2) 79 #define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \ 80 : 0x92 + (ix) * 2) 81 82 /* Temperatures (temp) numbered 0-2 (ix) */ 83 #define DME1737_REG_TEMP(ix) (0x25 + (ix)) 84 #define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2) 85 #define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2) 86 #define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \ 87 : 0x1c + (ix)) 88 89 /* 90 * Voltage and temperature LSBs 91 * The LSBs (4 bits each) are stored in 5 registers with the following layouts: 92 * IN_TEMP_LSB(0) = [in5, in6] 93 * IN_TEMP_LSB(1) = [temp3, temp1] 94 * IN_TEMP_LSB(2) = [in4, temp2] 95 * IN_TEMP_LSB(3) = [in3, in0] 96 * IN_TEMP_LSB(4) = [in2, in1] 97 * IN_TEMP_LSB(5) = [res, in7] 98 */ 99 #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix)) 100 static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5}; 101 static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4}; 102 static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1}; 103 static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0}; 104 105 /* Fans numbered 0-5 (ix) */ 106 #define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \ 107 : 0xa1 + (ix) * 2) 108 #define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \ 109 : 0xa5 + (ix) * 2) 110 #define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \ 111 : 0xb2 + (ix)) 112 #define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */ 113 114 /* PWMs numbered 0-2, 4-5 (ix) */ 115 #define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \ 116 : 0xa1 + (ix)) 117 #define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */ 118 #define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */ 119 #define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \ 120 : 0xa3 + (ix)) 121 /* 122 * The layout of the ramp rate registers is different from the other pwm 123 * registers. The bits for the 3 PWMs are stored in 2 registers: 124 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0] 125 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0] 126 */ 127 #define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */ 128 129 /* Thermal zones 0-2 */ 130 #define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix)) 131 #define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix)) 132 /* 133 * The layout of the hysteresis registers is different from the other zone 134 * registers. The bits for the 3 zones are stored in 2 registers: 135 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0] 136 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES] 137 */ 138 #define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix)) 139 140 /* 141 * Alarm registers and bit mapping 142 * The 3 8-bit alarm registers will be concatenated to a single 32-bit 143 * alarm value [0, ALARM3, ALARM2, ALARM1]. 144 */ 145 #define DME1737_REG_ALARM1 0x41 146 #define DME1737_REG_ALARM2 0x42 147 #define DME1737_REG_ALARM3 0x83 148 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18}; 149 static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6}; 150 static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23}; 151 152 /* Miscellaneous registers */ 153 #define DME1737_REG_DEVICE 0x3d 154 #define DME1737_REG_COMPANY 0x3e 155 #define DME1737_REG_VERSTEP 0x3f 156 #define DME1737_REG_CONFIG 0x40 157 #define DME1737_REG_CONFIG2 0x7f 158 #define DME1737_REG_VID 0x43 159 #define DME1737_REG_TACH_PWM 0x81 160 161 /* --------------------------------------------------------------------- 162 * Misc defines 163 * --------------------------------------------------------------------- */ 164 165 /* Chip identification */ 166 #define DME1737_COMPANY_SMSC 0x5c 167 #define DME1737_VERSTEP 0x88 168 #define DME1737_VERSTEP_MASK 0xf8 169 #define SCH311X_DEVICE 0x8c 170 #define SCH5027_VERSTEP 0x69 171 #define SCH5127_DEVICE 0x8e 172 173 /* Device ID values (global configuration register index 0x20) */ 174 #define DME1737_ID_1 0x77 175 #define DME1737_ID_2 0x78 176 #define SCH3112_ID 0x7c 177 #define SCH3114_ID 0x7d 178 #define SCH3116_ID 0x7f 179 #define SCH5027_ID 0x89 180 #define SCH5127_ID 0x86 181 182 /* Length of ISA address segment */ 183 #define DME1737_EXTENT 2 184 185 /* chip-dependent features */ 186 #define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */ 187 #define HAS_VID (1 << 1) /* bit 1 */ 188 #define HAS_ZONE3 (1 << 2) /* bit 2 */ 189 #define HAS_ZONE_HYST (1 << 3) /* bit 3 */ 190 #define HAS_PWM_MIN (1 << 4) /* bit 4 */ 191 #define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */ 192 #define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */ 193 #define HAS_IN7 (1 << 17) /* bit 17 */ 194 195 /* --------------------------------------------------------------------- 196 * Data structures and manipulation thereof 197 * --------------------------------------------------------------------- */ 198 199 struct dme1737_data { 200 struct i2c_client *client; /* for I2C devices only */ 201 struct device *hwmon_dev; 202 const char *name; 203 unsigned int addr; /* for ISA devices only */ 204 205 struct mutex update_lock; 206 bool valid; /* true if following fields are valid */ 207 unsigned long last_update; /* in jiffies */ 208 unsigned long last_vbat; /* in jiffies */ 209 enum chips type; 210 const int *in_nominal; /* pointer to IN_NOMINAL array */ 211 212 u8 vid; 213 u8 pwm_rr_en; 214 u32 has_features; 215 216 /* Register values */ 217 u16 in[8]; 218 u8 in_min[8]; 219 u8 in_max[8]; 220 s16 temp[3]; 221 s8 temp_min[3]; 222 s8 temp_max[3]; 223 s8 temp_offset[3]; 224 u8 config; 225 u8 config2; 226 u8 vrm; 227 u16 fan[6]; 228 u16 fan_min[6]; 229 u8 fan_max[2]; 230 u8 fan_opt[6]; 231 u8 pwm[6]; 232 u8 pwm_min[3]; 233 u8 pwm_config[3]; 234 u8 pwm_acz[3]; 235 u8 pwm_freq[6]; 236 u8 pwm_rr[2]; 237 s8 zone_low[3]; 238 s8 zone_abs[3]; 239 u8 zone_hyst[2]; 240 u32 alarms; 241 }; 242 243 /* Nominal voltage values */ 244 static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300, 245 3300}; 246 static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300, 247 3300}; 248 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300, 249 3300}; 250 static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300, 251 3300, 1500}; 252 #define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \ 253 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \ 254 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \ 255 IN_NOMINAL_DME1737) 256 257 /* 258 * Voltage input 259 * Voltage inputs have 16 bits resolution, limit values have 8 bits 260 * resolution. 261 */ IN_FROM_REG(int reg,int nominal,int res)262 static inline int IN_FROM_REG(int reg, int nominal, int res) 263 { 264 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2)); 265 } 266 IN_TO_REG(long val,int nominal)267 static inline int IN_TO_REG(long val, int nominal) 268 { 269 val = clamp_val(val, 0, 255 * nominal / 192); 270 return DIV_ROUND_CLOSEST(val * 192, nominal); 271 } 272 273 /* 274 * Temperature input 275 * The register values represent temperatures in 2's complement notation from 276 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit 277 * values have 8 bits resolution. 278 */ TEMP_FROM_REG(int reg,int res)279 static inline int TEMP_FROM_REG(int reg, int res) 280 { 281 return (reg * 1000) >> (res - 8); 282 } 283 TEMP_TO_REG(long val)284 static inline int TEMP_TO_REG(long val) 285 { 286 val = clamp_val(val, -128000, 127000); 287 return DIV_ROUND_CLOSEST(val, 1000); 288 } 289 290 /* Temperature range */ 291 static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000, 292 10000, 13333, 16000, 20000, 26666, 32000, 293 40000, 53333, 80000}; 294 TEMP_RANGE_FROM_REG(int reg)295 static inline int TEMP_RANGE_FROM_REG(int reg) 296 { 297 return TEMP_RANGE[(reg >> 4) & 0x0f]; 298 } 299 TEMP_RANGE_TO_REG(long val,int reg)300 static int TEMP_RANGE_TO_REG(long val, int reg) 301 { 302 int i; 303 304 for (i = 15; i > 0; i--) { 305 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2) 306 break; 307 } 308 309 return (reg & 0x0f) | (i << 4); 310 } 311 312 /* 313 * Temperature hysteresis 314 * Register layout: 315 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0] 316 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx] 317 */ TEMP_HYST_FROM_REG(int reg,int ix)318 static inline int TEMP_HYST_FROM_REG(int reg, int ix) 319 { 320 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000; 321 } 322 TEMP_HYST_TO_REG(int temp,long hyst,int ix,int reg)323 static inline int TEMP_HYST_TO_REG(int temp, long hyst, int ix, int reg) 324 { 325 hyst = clamp_val(hyst, temp - 15000, temp); 326 hyst = DIV_ROUND_CLOSEST(temp - hyst, 1000); 327 328 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4); 329 } 330 331 /* Fan input RPM */ FAN_FROM_REG(int reg,int tpc)332 static inline int FAN_FROM_REG(int reg, int tpc) 333 { 334 if (tpc) 335 return tpc * reg; 336 else 337 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg; 338 } 339 FAN_TO_REG(long val,int tpc)340 static inline int FAN_TO_REG(long val, int tpc) 341 { 342 if (tpc) { 343 return clamp_val(val / tpc, 0, 0xffff); 344 } else { 345 return (val <= 0) ? 0xffff : 346 clamp_val(90000 * 60 / val, 0, 0xfffe); 347 } 348 } 349 350 /* 351 * Fan TPC (tach pulse count) 352 * Converts a register value to a TPC multiplier or returns 0 if the tachometer 353 * is configured in legacy (non-tpc) mode 354 */ FAN_TPC_FROM_REG(int reg)355 static inline int FAN_TPC_FROM_REG(int reg) 356 { 357 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03); 358 } 359 360 /* 361 * Fan type 362 * The type of a fan is expressed in number of pulses-per-revolution that it 363 * emits 364 */ FAN_TYPE_FROM_REG(int reg)365 static inline int FAN_TYPE_FROM_REG(int reg) 366 { 367 int edge = (reg >> 1) & 0x03; 368 369 return (edge > 0) ? 1 << (edge - 1) : 0; 370 } 371 FAN_TYPE_TO_REG(long val,int reg)372 static inline int FAN_TYPE_TO_REG(long val, int reg) 373 { 374 int edge = (val == 4) ? 3 : val; 375 376 return (reg & 0xf9) | (edge << 1); 377 } 378 379 /* Fan max RPM */ 380 static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12, 381 0x11, 0x0f, 0x0e}; 382 FAN_MAX_FROM_REG(int reg)383 static int FAN_MAX_FROM_REG(int reg) 384 { 385 int i; 386 387 for (i = 10; i > 0; i--) { 388 if (reg == FAN_MAX[i]) 389 break; 390 } 391 392 return 1000 + i * 500; 393 } 394 FAN_MAX_TO_REG(long val)395 static int FAN_MAX_TO_REG(long val) 396 { 397 int i; 398 399 for (i = 10; i > 0; i--) { 400 if (val > (1000 + (i - 1) * 500)) 401 break; 402 } 403 404 return FAN_MAX[i]; 405 } 406 407 /* 408 * PWM enable 409 * Register to enable mapping: 410 * 000: 2 fan on zone 1 auto 411 * 001: 2 fan on zone 2 auto 412 * 010: 2 fan on zone 3 auto 413 * 011: 0 fan full on 414 * 100: -1 fan disabled 415 * 101: 2 fan on hottest of zones 2,3 auto 416 * 110: 2 fan on hottest of zones 1,2,3 auto 417 * 111: 1 fan in manual mode 418 */ PWM_EN_FROM_REG(int reg)419 static inline int PWM_EN_FROM_REG(int reg) 420 { 421 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1}; 422 423 return en[(reg >> 5) & 0x07]; 424 } 425 PWM_EN_TO_REG(int val,int reg)426 static inline int PWM_EN_TO_REG(int val, int reg) 427 { 428 int en = (val == 1) ? 7 : 3; 429 430 return (reg & 0x1f) | ((en & 0x07) << 5); 431 } 432 433 /* 434 * PWM auto channels zone 435 * Register to auto channels zone mapping (ACZ is a bitfield with bit x 436 * corresponding to zone x+1): 437 * 000: 001 fan on zone 1 auto 438 * 001: 010 fan on zone 2 auto 439 * 010: 100 fan on zone 3 auto 440 * 011: 000 fan full on 441 * 100: 000 fan disabled 442 * 101: 110 fan on hottest of zones 2,3 auto 443 * 110: 111 fan on hottest of zones 1,2,3 auto 444 * 111: 000 fan in manual mode 445 */ PWM_ACZ_FROM_REG(int reg)446 static inline int PWM_ACZ_FROM_REG(int reg) 447 { 448 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0}; 449 450 return acz[(reg >> 5) & 0x07]; 451 } 452 PWM_ACZ_TO_REG(long val,int reg)453 static inline int PWM_ACZ_TO_REG(long val, int reg) 454 { 455 int acz = (val == 4) ? 2 : val - 1; 456 457 return (reg & 0x1f) | ((acz & 0x07) << 5); 458 } 459 460 /* PWM frequency */ 461 static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88, 462 15000, 20000, 30000, 25000, 0, 0, 0, 0}; 463 PWM_FREQ_FROM_REG(int reg)464 static inline int PWM_FREQ_FROM_REG(int reg) 465 { 466 return PWM_FREQ[reg & 0x0f]; 467 } 468 PWM_FREQ_TO_REG(long val,int reg)469 static int PWM_FREQ_TO_REG(long val, int reg) 470 { 471 int i; 472 473 /* the first two cases are special - stupid chip design! */ 474 if (val > 27500) { 475 i = 10; 476 } else if (val > 22500) { 477 i = 11; 478 } else { 479 for (i = 9; i > 0; i--) { 480 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2) 481 break; 482 } 483 } 484 485 return (reg & 0xf0) | i; 486 } 487 488 /* 489 * PWM ramp rate 490 * Register layout: 491 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0] 492 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0] 493 */ 494 static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5}; 495 PWM_RR_FROM_REG(int reg,int ix)496 static inline int PWM_RR_FROM_REG(int reg, int ix) 497 { 498 int rr = (ix == 1) ? reg >> 4 : reg; 499 500 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0; 501 } 502 PWM_RR_TO_REG(long val,int ix,int reg)503 static int PWM_RR_TO_REG(long val, int ix, int reg) 504 { 505 int i; 506 507 for (i = 0; i < 7; i++) { 508 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2) 509 break; 510 } 511 512 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i; 513 } 514 515 /* PWM ramp rate enable */ PWM_RR_EN_FROM_REG(int reg,int ix)516 static inline int PWM_RR_EN_FROM_REG(int reg, int ix) 517 { 518 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0; 519 } 520 PWM_RR_EN_TO_REG(long val,int ix,int reg)521 static inline int PWM_RR_EN_TO_REG(long val, int ix, int reg) 522 { 523 int en = (ix == 1) ? 0x80 : 0x08; 524 525 return val ? reg | en : reg & ~en; 526 } 527 528 /* 529 * PWM min/off 530 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for 531 * the register layout). 532 */ PWM_OFF_FROM_REG(int reg,int ix)533 static inline int PWM_OFF_FROM_REG(int reg, int ix) 534 { 535 return (reg >> (ix + 5)) & 0x01; 536 } 537 PWM_OFF_TO_REG(int val,int ix,int reg)538 static inline int PWM_OFF_TO_REG(int val, int ix, int reg) 539 { 540 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5)); 541 } 542 543 /* --------------------------------------------------------------------- 544 * Device I/O access 545 * 546 * ISA access is performed through an index/data register pair and needs to 547 * be protected by a mutex during runtime (not required for initialization). 548 * We use data->update_lock for this and need to ensure that we acquire it 549 * before calling dme1737_read or dme1737_write. 550 * --------------------------------------------------------------------- */ 551 dme1737_read(const struct dme1737_data * data,u8 reg)552 static u8 dme1737_read(const struct dme1737_data *data, u8 reg) 553 { 554 struct i2c_client *client = data->client; 555 s32 val; 556 557 if (client) { /* I2C device */ 558 val = i2c_smbus_read_byte_data(client, reg); 559 560 if (val < 0) { 561 dev_warn(&client->dev, 562 "Read from register 0x%02x failed! %s\n", 563 reg, DO_REPORT); 564 } 565 } else { /* ISA device */ 566 outb(reg, data->addr); 567 val = inb(data->addr + 1); 568 } 569 570 return val; 571 } 572 dme1737_write(const struct dme1737_data * data,u8 reg,u8 val)573 static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val) 574 { 575 struct i2c_client *client = data->client; 576 s32 res = 0; 577 578 if (client) { /* I2C device */ 579 res = i2c_smbus_write_byte_data(client, reg, val); 580 581 if (res < 0) { 582 dev_warn(&client->dev, 583 "Write to register 0x%02x failed! %s\n", 584 reg, DO_REPORT); 585 } 586 } else { /* ISA device */ 587 outb(reg, data->addr); 588 outb(val, data->addr + 1); 589 } 590 591 return res; 592 } 593 dme1737_update_device(struct device * dev)594 static struct dme1737_data *dme1737_update_device(struct device *dev) 595 { 596 struct dme1737_data *data = dev_get_drvdata(dev); 597 int ix; 598 u8 lsb[6]; 599 600 mutex_lock(&data->update_lock); 601 602 /* Enable a Vbat monitoring cycle every 10 mins */ 603 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) { 604 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data, 605 DME1737_REG_CONFIG) | 0x10); 606 data->last_vbat = jiffies; 607 } 608 609 /* Sample register contents every 1 sec */ 610 if (time_after(jiffies, data->last_update + HZ) || !data->valid) { 611 if (data->has_features & HAS_VID) { 612 data->vid = dme1737_read(data, DME1737_REG_VID) & 613 0x3f; 614 } 615 616 /* In (voltage) registers */ 617 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { 618 /* 619 * Voltage inputs are stored as 16 bit values even 620 * though they have only 12 bits resolution. This is 621 * to make it consistent with the temp inputs. 622 */ 623 if (ix == 7 && !(data->has_features & HAS_IN7)) 624 continue; 625 data->in[ix] = dme1737_read(data, 626 DME1737_REG_IN(ix)) << 8; 627 data->in_min[ix] = dme1737_read(data, 628 DME1737_REG_IN_MIN(ix)); 629 data->in_max[ix] = dme1737_read(data, 630 DME1737_REG_IN_MAX(ix)); 631 } 632 633 /* Temp registers */ 634 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { 635 /* 636 * Temp inputs are stored as 16 bit values even 637 * though they have only 12 bits resolution. This is 638 * to take advantage of implicit conversions between 639 * register values (2's complement) and temp values 640 * (signed decimal). 641 */ 642 data->temp[ix] = dme1737_read(data, 643 DME1737_REG_TEMP(ix)) << 8; 644 data->temp_min[ix] = dme1737_read(data, 645 DME1737_REG_TEMP_MIN(ix)); 646 data->temp_max[ix] = dme1737_read(data, 647 DME1737_REG_TEMP_MAX(ix)); 648 if (data->has_features & HAS_TEMP_OFFSET) { 649 data->temp_offset[ix] = dme1737_read(data, 650 DME1737_REG_TEMP_OFFSET(ix)); 651 } 652 } 653 654 /* 655 * In and temp LSB registers 656 * The LSBs are latched when the MSBs are read, so the order in 657 * which the registers are read (MSB first, then LSB) is 658 * important! 659 */ 660 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) { 661 if (ix == 5 && !(data->has_features & HAS_IN7)) 662 continue; 663 lsb[ix] = dme1737_read(data, 664 DME1737_REG_IN_TEMP_LSB(ix)); 665 } 666 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { 667 if (ix == 7 && !(data->has_features & HAS_IN7)) 668 continue; 669 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] << 670 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0; 671 } 672 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { 673 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] << 674 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0; 675 } 676 677 /* Fan registers */ 678 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { 679 /* 680 * Skip reading registers if optional fans are not 681 * present 682 */ 683 if (!(data->has_features & HAS_FAN(ix))) 684 continue; 685 data->fan[ix] = dme1737_read(data, 686 DME1737_REG_FAN(ix)); 687 data->fan[ix] |= dme1737_read(data, 688 DME1737_REG_FAN(ix) + 1) << 8; 689 data->fan_min[ix] = dme1737_read(data, 690 DME1737_REG_FAN_MIN(ix)); 691 data->fan_min[ix] |= dme1737_read(data, 692 DME1737_REG_FAN_MIN(ix) + 1) << 8; 693 data->fan_opt[ix] = dme1737_read(data, 694 DME1737_REG_FAN_OPT(ix)); 695 /* fan_max exists only for fan[5-6] */ 696 if (ix > 3) { 697 data->fan_max[ix - 4] = dme1737_read(data, 698 DME1737_REG_FAN_MAX(ix)); 699 } 700 } 701 702 /* PWM registers */ 703 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) { 704 /* 705 * Skip reading registers if optional PWMs are not 706 * present 707 */ 708 if (!(data->has_features & HAS_PWM(ix))) 709 continue; 710 data->pwm[ix] = dme1737_read(data, 711 DME1737_REG_PWM(ix)); 712 data->pwm_freq[ix] = dme1737_read(data, 713 DME1737_REG_PWM_FREQ(ix)); 714 /* pwm_config and pwm_min exist only for pwm[1-3] */ 715 if (ix < 3) { 716 data->pwm_config[ix] = dme1737_read(data, 717 DME1737_REG_PWM_CONFIG(ix)); 718 data->pwm_min[ix] = dme1737_read(data, 719 DME1737_REG_PWM_MIN(ix)); 720 } 721 } 722 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) { 723 data->pwm_rr[ix] = dme1737_read(data, 724 DME1737_REG_PWM_RR(ix)); 725 } 726 727 /* Thermal zone registers */ 728 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) { 729 /* Skip reading registers if zone3 is not present */ 730 if ((ix == 2) && !(data->has_features & HAS_ZONE3)) 731 continue; 732 /* sch5127 zone2 registers are special */ 733 if ((ix == 1) && (data->type == sch5127)) { 734 data->zone_low[1] = dme1737_read(data, 735 DME1737_REG_ZONE_LOW(2)); 736 data->zone_abs[1] = dme1737_read(data, 737 DME1737_REG_ZONE_ABS(2)); 738 } else { 739 data->zone_low[ix] = dme1737_read(data, 740 DME1737_REG_ZONE_LOW(ix)); 741 data->zone_abs[ix] = dme1737_read(data, 742 DME1737_REG_ZONE_ABS(ix)); 743 } 744 } 745 if (data->has_features & HAS_ZONE_HYST) { 746 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) { 747 data->zone_hyst[ix] = dme1737_read(data, 748 DME1737_REG_ZONE_HYST(ix)); 749 } 750 } 751 752 /* Alarm registers */ 753 data->alarms = dme1737_read(data, 754 DME1737_REG_ALARM1); 755 /* 756 * Bit 7 tells us if the other alarm registers are non-zero and 757 * therefore also need to be read 758 */ 759 if (data->alarms & 0x80) { 760 data->alarms |= dme1737_read(data, 761 DME1737_REG_ALARM2) << 8; 762 data->alarms |= dme1737_read(data, 763 DME1737_REG_ALARM3) << 16; 764 } 765 766 /* 767 * The ISA chips require explicit clearing of alarm bits. 768 * Don't worry, an alarm will come back if the condition 769 * that causes it still exists 770 */ 771 if (!data->client) { 772 if (data->alarms & 0xff0000) 773 dme1737_write(data, DME1737_REG_ALARM3, 0xff); 774 if (data->alarms & 0xff00) 775 dme1737_write(data, DME1737_REG_ALARM2, 0xff); 776 if (data->alarms & 0xff) 777 dme1737_write(data, DME1737_REG_ALARM1, 0xff); 778 } 779 780 data->last_update = jiffies; 781 data->valid = true; 782 } 783 784 mutex_unlock(&data->update_lock); 785 786 return data; 787 } 788 789 /* --------------------------------------------------------------------- 790 * Voltage sysfs attributes 791 * ix = [0-7] 792 * --------------------------------------------------------------------- */ 793 794 #define SYS_IN_INPUT 0 795 #define SYS_IN_MIN 1 796 #define SYS_IN_MAX 2 797 #define SYS_IN_ALARM 3 798 show_in(struct device * dev,struct device_attribute * attr,char * buf)799 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 800 char *buf) 801 { 802 struct dme1737_data *data = dme1737_update_device(dev); 803 struct sensor_device_attribute_2 804 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 805 int ix = sensor_attr_2->index; 806 int fn = sensor_attr_2->nr; 807 int res; 808 809 switch (fn) { 810 case SYS_IN_INPUT: 811 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16); 812 break; 813 case SYS_IN_MIN: 814 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8); 815 break; 816 case SYS_IN_MAX: 817 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8); 818 break; 819 case SYS_IN_ALARM: 820 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01; 821 break; 822 default: 823 res = 0; 824 dev_dbg(dev, "Unknown function %d.\n", fn); 825 } 826 827 return sprintf(buf, "%d\n", res); 828 } 829 set_in(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)830 static ssize_t set_in(struct device *dev, struct device_attribute *attr, 831 const char *buf, size_t count) 832 { 833 struct dme1737_data *data = dev_get_drvdata(dev); 834 struct sensor_device_attribute_2 835 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 836 int ix = sensor_attr_2->index; 837 int fn = sensor_attr_2->nr; 838 long val; 839 int err; 840 841 err = kstrtol(buf, 10, &val); 842 if (err) 843 return err; 844 845 mutex_lock(&data->update_lock); 846 switch (fn) { 847 case SYS_IN_MIN: 848 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]); 849 dme1737_write(data, DME1737_REG_IN_MIN(ix), 850 data->in_min[ix]); 851 break; 852 case SYS_IN_MAX: 853 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]); 854 dme1737_write(data, DME1737_REG_IN_MAX(ix), 855 data->in_max[ix]); 856 break; 857 default: 858 dev_dbg(dev, "Unknown function %d.\n", fn); 859 } 860 mutex_unlock(&data->update_lock); 861 862 return count; 863 } 864 865 /* --------------------------------------------------------------------- 866 * Temperature sysfs attributes 867 * ix = [0-2] 868 * --------------------------------------------------------------------- */ 869 870 #define SYS_TEMP_INPUT 0 871 #define SYS_TEMP_MIN 1 872 #define SYS_TEMP_MAX 2 873 #define SYS_TEMP_OFFSET 3 874 #define SYS_TEMP_ALARM 4 875 #define SYS_TEMP_FAULT 5 876 show_temp(struct device * dev,struct device_attribute * attr,char * buf)877 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 878 char *buf) 879 { 880 struct dme1737_data *data = dme1737_update_device(dev); 881 struct sensor_device_attribute_2 882 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 883 int ix = sensor_attr_2->index; 884 int fn = sensor_attr_2->nr; 885 int res; 886 887 switch (fn) { 888 case SYS_TEMP_INPUT: 889 res = TEMP_FROM_REG(data->temp[ix], 16); 890 break; 891 case SYS_TEMP_MIN: 892 res = TEMP_FROM_REG(data->temp_min[ix], 8); 893 break; 894 case SYS_TEMP_MAX: 895 res = TEMP_FROM_REG(data->temp_max[ix], 8); 896 break; 897 case SYS_TEMP_OFFSET: 898 res = TEMP_FROM_REG(data->temp_offset[ix], 8); 899 break; 900 case SYS_TEMP_ALARM: 901 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01; 902 break; 903 case SYS_TEMP_FAULT: 904 res = (((u16)data->temp[ix] & 0xff00) == 0x8000); 905 break; 906 default: 907 res = 0; 908 dev_dbg(dev, "Unknown function %d.\n", fn); 909 } 910 911 return sprintf(buf, "%d\n", res); 912 } 913 set_temp(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)914 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 915 const char *buf, size_t count) 916 { 917 struct dme1737_data *data = dev_get_drvdata(dev); 918 struct sensor_device_attribute_2 919 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 920 int ix = sensor_attr_2->index; 921 int fn = sensor_attr_2->nr; 922 long val; 923 int err; 924 925 err = kstrtol(buf, 10, &val); 926 if (err) 927 return err; 928 929 mutex_lock(&data->update_lock); 930 switch (fn) { 931 case SYS_TEMP_MIN: 932 data->temp_min[ix] = TEMP_TO_REG(val); 933 dme1737_write(data, DME1737_REG_TEMP_MIN(ix), 934 data->temp_min[ix]); 935 break; 936 case SYS_TEMP_MAX: 937 data->temp_max[ix] = TEMP_TO_REG(val); 938 dme1737_write(data, DME1737_REG_TEMP_MAX(ix), 939 data->temp_max[ix]); 940 break; 941 case SYS_TEMP_OFFSET: 942 data->temp_offset[ix] = TEMP_TO_REG(val); 943 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix), 944 data->temp_offset[ix]); 945 break; 946 default: 947 dev_dbg(dev, "Unknown function %d.\n", fn); 948 } 949 mutex_unlock(&data->update_lock); 950 951 return count; 952 } 953 954 /* --------------------------------------------------------------------- 955 * Zone sysfs attributes 956 * ix = [0-2] 957 * --------------------------------------------------------------------- */ 958 959 #define SYS_ZONE_AUTO_CHANNELS_TEMP 0 960 #define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1 961 #define SYS_ZONE_AUTO_POINT1_TEMP 2 962 #define SYS_ZONE_AUTO_POINT2_TEMP 3 963 #define SYS_ZONE_AUTO_POINT3_TEMP 4 964 show_zone(struct device * dev,struct device_attribute * attr,char * buf)965 static ssize_t show_zone(struct device *dev, struct device_attribute *attr, 966 char *buf) 967 { 968 struct dme1737_data *data = dme1737_update_device(dev); 969 struct sensor_device_attribute_2 970 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 971 int ix = sensor_attr_2->index; 972 int fn = sensor_attr_2->nr; 973 int res; 974 975 switch (fn) { 976 case SYS_ZONE_AUTO_CHANNELS_TEMP: 977 /* check config2 for non-standard temp-to-zone mapping */ 978 if ((ix == 1) && (data->config2 & 0x02)) 979 res = 4; 980 else 981 res = 1 << ix; 982 break; 983 case SYS_ZONE_AUTO_POINT1_TEMP_HYST: 984 res = TEMP_FROM_REG(data->zone_low[ix], 8) - 985 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix); 986 break; 987 case SYS_ZONE_AUTO_POINT1_TEMP: 988 res = TEMP_FROM_REG(data->zone_low[ix], 8); 989 break; 990 case SYS_ZONE_AUTO_POINT2_TEMP: 991 /* pwm_freq holds the temp range bits in the upper nibble */ 992 res = TEMP_FROM_REG(data->zone_low[ix], 8) + 993 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]); 994 break; 995 case SYS_ZONE_AUTO_POINT3_TEMP: 996 res = TEMP_FROM_REG(data->zone_abs[ix], 8); 997 break; 998 default: 999 res = 0; 1000 dev_dbg(dev, "Unknown function %d.\n", fn); 1001 } 1002 1003 return sprintf(buf, "%d\n", res); 1004 } 1005 set_zone(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1006 static ssize_t set_zone(struct device *dev, struct device_attribute *attr, 1007 const char *buf, size_t count) 1008 { 1009 struct dme1737_data *data = dev_get_drvdata(dev); 1010 struct sensor_device_attribute_2 1011 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 1012 int ix = sensor_attr_2->index; 1013 int fn = sensor_attr_2->nr; 1014 long val; 1015 int temp; 1016 int err; 1017 u8 reg; 1018 1019 err = kstrtol(buf, 10, &val); 1020 if (err) 1021 return err; 1022 1023 mutex_lock(&data->update_lock); 1024 switch (fn) { 1025 case SYS_ZONE_AUTO_POINT1_TEMP_HYST: 1026 /* Refresh the cache */ 1027 data->zone_low[ix] = dme1737_read(data, 1028 DME1737_REG_ZONE_LOW(ix)); 1029 /* Modify the temp hyst value */ 1030 temp = TEMP_FROM_REG(data->zone_low[ix], 8); 1031 reg = dme1737_read(data, DME1737_REG_ZONE_HYST(ix == 2)); 1032 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(temp, val, ix, reg); 1033 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2), 1034 data->zone_hyst[ix == 2]); 1035 break; 1036 case SYS_ZONE_AUTO_POINT1_TEMP: 1037 data->zone_low[ix] = TEMP_TO_REG(val); 1038 dme1737_write(data, DME1737_REG_ZONE_LOW(ix), 1039 data->zone_low[ix]); 1040 break; 1041 case SYS_ZONE_AUTO_POINT2_TEMP: 1042 /* Refresh the cache */ 1043 data->zone_low[ix] = dme1737_read(data, 1044 DME1737_REG_ZONE_LOW(ix)); 1045 /* 1046 * Modify the temp range value (which is stored in the upper 1047 * nibble of the pwm_freq register) 1048 */ 1049 temp = TEMP_FROM_REG(data->zone_low[ix], 8); 1050 val = clamp_val(val, temp, temp + 80000); 1051 reg = dme1737_read(data, DME1737_REG_PWM_FREQ(ix)); 1052 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val - temp, reg); 1053 dme1737_write(data, DME1737_REG_PWM_FREQ(ix), 1054 data->pwm_freq[ix]); 1055 break; 1056 case SYS_ZONE_AUTO_POINT3_TEMP: 1057 data->zone_abs[ix] = TEMP_TO_REG(val); 1058 dme1737_write(data, DME1737_REG_ZONE_ABS(ix), 1059 data->zone_abs[ix]); 1060 break; 1061 default: 1062 dev_dbg(dev, "Unknown function %d.\n", fn); 1063 } 1064 mutex_unlock(&data->update_lock); 1065 1066 return count; 1067 } 1068 1069 /* --------------------------------------------------------------------- 1070 * Fan sysfs attributes 1071 * ix = [0-5] 1072 * --------------------------------------------------------------------- */ 1073 1074 #define SYS_FAN_INPUT 0 1075 #define SYS_FAN_MIN 1 1076 #define SYS_FAN_MAX 2 1077 #define SYS_FAN_ALARM 3 1078 #define SYS_FAN_TYPE 4 1079 show_fan(struct device * dev,struct device_attribute * attr,char * buf)1080 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 1081 char *buf) 1082 { 1083 struct dme1737_data *data = dme1737_update_device(dev); 1084 struct sensor_device_attribute_2 1085 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 1086 int ix = sensor_attr_2->index; 1087 int fn = sensor_attr_2->nr; 1088 int res; 1089 1090 switch (fn) { 1091 case SYS_FAN_INPUT: 1092 res = FAN_FROM_REG(data->fan[ix], 1093 ix < 4 ? 0 : 1094 FAN_TPC_FROM_REG(data->fan_opt[ix])); 1095 break; 1096 case SYS_FAN_MIN: 1097 res = FAN_FROM_REG(data->fan_min[ix], 1098 ix < 4 ? 0 : 1099 FAN_TPC_FROM_REG(data->fan_opt[ix])); 1100 break; 1101 case SYS_FAN_MAX: 1102 /* only valid for fan[5-6] */ 1103 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]); 1104 break; 1105 case SYS_FAN_ALARM: 1106 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01; 1107 break; 1108 case SYS_FAN_TYPE: 1109 /* only valid for fan[1-4] */ 1110 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]); 1111 break; 1112 default: 1113 res = 0; 1114 dev_dbg(dev, "Unknown function %d.\n", fn); 1115 } 1116 1117 return sprintf(buf, "%d\n", res); 1118 } 1119 set_fan(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1120 static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 1121 const char *buf, size_t count) 1122 { 1123 struct dme1737_data *data = dev_get_drvdata(dev); 1124 struct sensor_device_attribute_2 1125 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 1126 int ix = sensor_attr_2->index; 1127 int fn = sensor_attr_2->nr; 1128 long val; 1129 int err; 1130 1131 err = kstrtol(buf, 10, &val); 1132 if (err) 1133 return err; 1134 1135 mutex_lock(&data->update_lock); 1136 switch (fn) { 1137 case SYS_FAN_MIN: 1138 if (ix < 4) { 1139 data->fan_min[ix] = FAN_TO_REG(val, 0); 1140 } else { 1141 /* Refresh the cache */ 1142 data->fan_opt[ix] = dme1737_read(data, 1143 DME1737_REG_FAN_OPT(ix)); 1144 /* Modify the fan min value */ 1145 data->fan_min[ix] = FAN_TO_REG(val, 1146 FAN_TPC_FROM_REG(data->fan_opt[ix])); 1147 } 1148 dme1737_write(data, DME1737_REG_FAN_MIN(ix), 1149 data->fan_min[ix] & 0xff); 1150 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1, 1151 data->fan_min[ix] >> 8); 1152 break; 1153 case SYS_FAN_MAX: 1154 /* Only valid for fan[5-6] */ 1155 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val); 1156 dme1737_write(data, DME1737_REG_FAN_MAX(ix), 1157 data->fan_max[ix - 4]); 1158 break; 1159 case SYS_FAN_TYPE: 1160 /* Only valid for fan[1-4] */ 1161 if (!(val == 1 || val == 2 || val == 4)) { 1162 count = -EINVAL; 1163 dev_warn(dev, 1164 "Fan type value %ld not supported. Choose one of 1, 2, or 4.\n", 1165 val); 1166 goto exit; 1167 } 1168 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data, 1169 DME1737_REG_FAN_OPT(ix))); 1170 dme1737_write(data, DME1737_REG_FAN_OPT(ix), 1171 data->fan_opt[ix]); 1172 break; 1173 default: 1174 dev_dbg(dev, "Unknown function %d.\n", fn); 1175 } 1176 exit: 1177 mutex_unlock(&data->update_lock); 1178 1179 return count; 1180 } 1181 1182 /* --------------------------------------------------------------------- 1183 * PWM sysfs attributes 1184 * ix = [0-4] 1185 * --------------------------------------------------------------------- */ 1186 1187 #define SYS_PWM 0 1188 #define SYS_PWM_FREQ 1 1189 #define SYS_PWM_ENABLE 2 1190 #define SYS_PWM_RAMP_RATE 3 1191 #define SYS_PWM_AUTO_CHANNELS_ZONE 4 1192 #define SYS_PWM_AUTO_PWM_MIN 5 1193 #define SYS_PWM_AUTO_POINT1_PWM 6 1194 #define SYS_PWM_AUTO_POINT2_PWM 7 1195 show_pwm(struct device * dev,struct device_attribute * attr,char * buf)1196 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 1197 char *buf) 1198 { 1199 struct dme1737_data *data = dme1737_update_device(dev); 1200 struct sensor_device_attribute_2 1201 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 1202 int ix = sensor_attr_2->index; 1203 int fn = sensor_attr_2->nr; 1204 int res; 1205 1206 switch (fn) { 1207 case SYS_PWM: 1208 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0) 1209 res = 255; 1210 else 1211 res = data->pwm[ix]; 1212 break; 1213 case SYS_PWM_FREQ: 1214 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]); 1215 break; 1216 case SYS_PWM_ENABLE: 1217 if (ix >= 3) 1218 res = 1; /* pwm[5-6] hard-wired to manual mode */ 1219 else 1220 res = PWM_EN_FROM_REG(data->pwm_config[ix]); 1221 break; 1222 case SYS_PWM_RAMP_RATE: 1223 /* Only valid for pwm[1-3] */ 1224 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix); 1225 break; 1226 case SYS_PWM_AUTO_CHANNELS_ZONE: 1227 /* Only valid for pwm[1-3] */ 1228 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) 1229 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]); 1230 else 1231 res = data->pwm_acz[ix]; 1232 break; 1233 case SYS_PWM_AUTO_PWM_MIN: 1234 /* Only valid for pwm[1-3] */ 1235 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix)) 1236 res = data->pwm_min[ix]; 1237 else 1238 res = 0; 1239 break; 1240 case SYS_PWM_AUTO_POINT1_PWM: 1241 /* Only valid for pwm[1-3] */ 1242 res = data->pwm_min[ix]; 1243 break; 1244 case SYS_PWM_AUTO_POINT2_PWM: 1245 /* Only valid for pwm[1-3] */ 1246 res = 255; /* hard-wired */ 1247 break; 1248 default: 1249 res = 0; 1250 dev_dbg(dev, "Unknown function %d.\n", fn); 1251 } 1252 1253 return sprintf(buf, "%d\n", res); 1254 } 1255 1256 static struct attribute *dme1737_pwm_chmod_attr[]; 1257 static void dme1737_chmod_file(struct device*, struct attribute*, umode_t); 1258 set_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1259 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 1260 const char *buf, size_t count) 1261 { 1262 struct dme1737_data *data = dev_get_drvdata(dev); 1263 struct sensor_device_attribute_2 1264 *sensor_attr_2 = to_sensor_dev_attr_2(attr); 1265 int ix = sensor_attr_2->index; 1266 int fn = sensor_attr_2->nr; 1267 long val; 1268 int err; 1269 1270 err = kstrtol(buf, 10, &val); 1271 if (err) 1272 return err; 1273 1274 mutex_lock(&data->update_lock); 1275 switch (fn) { 1276 case SYS_PWM: 1277 data->pwm[ix] = clamp_val(val, 0, 255); 1278 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]); 1279 break; 1280 case SYS_PWM_FREQ: 1281 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data, 1282 DME1737_REG_PWM_FREQ(ix))); 1283 dme1737_write(data, DME1737_REG_PWM_FREQ(ix), 1284 data->pwm_freq[ix]); 1285 break; 1286 case SYS_PWM_ENABLE: 1287 /* Only valid for pwm[1-3] */ 1288 if (val < 0 || val > 2) { 1289 count = -EINVAL; 1290 dev_warn(dev, 1291 "PWM enable %ld not supported. Choose one of 0, 1, or 2.\n", 1292 val); 1293 goto exit; 1294 } 1295 /* Refresh the cache */ 1296 data->pwm_config[ix] = dme1737_read(data, 1297 DME1737_REG_PWM_CONFIG(ix)); 1298 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) { 1299 /* Bail out if no change */ 1300 goto exit; 1301 } 1302 /* Do some housekeeping if we are currently in auto mode */ 1303 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { 1304 /* Save the current zone channel assignment */ 1305 data->pwm_acz[ix] = PWM_ACZ_FROM_REG( 1306 data->pwm_config[ix]); 1307 /* Save the current ramp rate state and disable it */ 1308 data->pwm_rr[ix > 0] = dme1737_read(data, 1309 DME1737_REG_PWM_RR(ix > 0)); 1310 data->pwm_rr_en &= ~(1 << ix); 1311 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) { 1312 data->pwm_rr_en |= (1 << ix); 1313 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix, 1314 data->pwm_rr[ix > 0]); 1315 dme1737_write(data, 1316 DME1737_REG_PWM_RR(ix > 0), 1317 data->pwm_rr[ix > 0]); 1318 } 1319 } 1320 /* Set the new PWM mode */ 1321 switch (val) { 1322 case 0: 1323 /* Change permissions of pwm[ix] to read-only */ 1324 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], 1325 S_IRUGO); 1326 /* Turn fan fully on */ 1327 data->pwm_config[ix] = PWM_EN_TO_REG(0, 1328 data->pwm_config[ix]); 1329 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), 1330 data->pwm_config[ix]); 1331 break; 1332 case 1: 1333 /* Turn on manual mode */ 1334 data->pwm_config[ix] = PWM_EN_TO_REG(1, 1335 data->pwm_config[ix]); 1336 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), 1337 data->pwm_config[ix]); 1338 /* Change permissions of pwm[ix] to read-writeable */ 1339 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], 1340 S_IRUGO | S_IWUSR); 1341 break; 1342 case 2: 1343 /* Change permissions of pwm[ix] to read-only */ 1344 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], 1345 S_IRUGO); 1346 /* 1347 * Turn on auto mode using the saved zone channel 1348 * assignment 1349 */ 1350 data->pwm_config[ix] = PWM_ACZ_TO_REG( 1351 data->pwm_acz[ix], 1352 data->pwm_config[ix]); 1353 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), 1354 data->pwm_config[ix]); 1355 /* Enable PWM ramp rate if previously enabled */ 1356 if (data->pwm_rr_en & (1 << ix)) { 1357 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix, 1358 dme1737_read(data, 1359 DME1737_REG_PWM_RR(ix > 0))); 1360 dme1737_write(data, 1361 DME1737_REG_PWM_RR(ix > 0), 1362 data->pwm_rr[ix > 0]); 1363 } 1364 break; 1365 } 1366 break; 1367 case SYS_PWM_RAMP_RATE: 1368 /* Only valid for pwm[1-3] */ 1369 /* Refresh the cache */ 1370 data->pwm_config[ix] = dme1737_read(data, 1371 DME1737_REG_PWM_CONFIG(ix)); 1372 data->pwm_rr[ix > 0] = dme1737_read(data, 1373 DME1737_REG_PWM_RR(ix > 0)); 1374 /* Set the ramp rate value */ 1375 if (val > 0) { 1376 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix, 1377 data->pwm_rr[ix > 0]); 1378 } 1379 /* 1380 * Enable/disable the feature only if the associated PWM 1381 * output is in automatic mode. 1382 */ 1383 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { 1384 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix, 1385 data->pwm_rr[ix > 0]); 1386 } 1387 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0), 1388 data->pwm_rr[ix > 0]); 1389 break; 1390 case SYS_PWM_AUTO_CHANNELS_ZONE: 1391 /* Only valid for pwm[1-3] */ 1392 if (!(val == 1 || val == 2 || val == 4 || 1393 val == 6 || val == 7)) { 1394 count = -EINVAL; 1395 dev_warn(dev, 1396 "PWM auto channels zone %ld not supported. Choose one of 1, 2, 4, 6, " 1397 "or 7.\n", val); 1398 goto exit; 1399 } 1400 /* Refresh the cache */ 1401 data->pwm_config[ix] = dme1737_read(data, 1402 DME1737_REG_PWM_CONFIG(ix)); 1403 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { 1404 /* 1405 * PWM is already in auto mode so update the temp 1406 * channel assignment 1407 */ 1408 data->pwm_config[ix] = PWM_ACZ_TO_REG(val, 1409 data->pwm_config[ix]); 1410 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), 1411 data->pwm_config[ix]); 1412 } else { 1413 /* 1414 * PWM is not in auto mode so we save the temp 1415 * channel assignment for later use 1416 */ 1417 data->pwm_acz[ix] = val; 1418 } 1419 break; 1420 case SYS_PWM_AUTO_PWM_MIN: 1421 /* Only valid for pwm[1-3] */ 1422 /* Refresh the cache */ 1423 data->pwm_min[ix] = dme1737_read(data, 1424 DME1737_REG_PWM_MIN(ix)); 1425 /* 1426 * There are only 2 values supported for the auto_pwm_min 1427 * value: 0 or auto_point1_pwm. So if the temperature drops 1428 * below the auto_point1_temp_hyst value, the fan either turns 1429 * off or runs at auto_point1_pwm duty-cycle. 1430 */ 1431 if (val > ((data->pwm_min[ix] + 1) / 2)) { 1432 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix, 1433 dme1737_read(data, 1434 DME1737_REG_PWM_RR(0))); 1435 } else { 1436 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix, 1437 dme1737_read(data, 1438 DME1737_REG_PWM_RR(0))); 1439 } 1440 dme1737_write(data, DME1737_REG_PWM_RR(0), 1441 data->pwm_rr[0]); 1442 break; 1443 case SYS_PWM_AUTO_POINT1_PWM: 1444 /* Only valid for pwm[1-3] */ 1445 data->pwm_min[ix] = clamp_val(val, 0, 255); 1446 dme1737_write(data, DME1737_REG_PWM_MIN(ix), 1447 data->pwm_min[ix]); 1448 break; 1449 default: 1450 dev_dbg(dev, "Unknown function %d.\n", fn); 1451 } 1452 exit: 1453 mutex_unlock(&data->update_lock); 1454 1455 return count; 1456 } 1457 1458 /* --------------------------------------------------------------------- 1459 * Miscellaneous sysfs attributes 1460 * --------------------------------------------------------------------- */ 1461 vrm_show(struct device * dev,struct device_attribute * attr,char * buf)1462 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, 1463 char *buf) 1464 { 1465 struct i2c_client *client = to_i2c_client(dev); 1466 struct dme1737_data *data = i2c_get_clientdata(client); 1467 1468 return sprintf(buf, "%d\n", data->vrm); 1469 } 1470 vrm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1471 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, 1472 const char *buf, size_t count) 1473 { 1474 struct dme1737_data *data = dev_get_drvdata(dev); 1475 unsigned long val; 1476 int err; 1477 1478 err = kstrtoul(buf, 10, &val); 1479 if (err) 1480 return err; 1481 1482 if (val > 255) 1483 return -EINVAL; 1484 1485 data->vrm = val; 1486 return count; 1487 } 1488 cpu0_vid_show(struct device * dev,struct device_attribute * attr,char * buf)1489 static ssize_t cpu0_vid_show(struct device *dev, 1490 struct device_attribute *attr, char *buf) 1491 { 1492 struct dme1737_data *data = dme1737_update_device(dev); 1493 1494 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1495 } 1496 name_show(struct device * dev,struct device_attribute * attr,char * buf)1497 static ssize_t name_show(struct device *dev, struct device_attribute *attr, 1498 char *buf) 1499 { 1500 struct dme1737_data *data = dev_get_drvdata(dev); 1501 1502 return sprintf(buf, "%s\n", data->name); 1503 } 1504 1505 /* --------------------------------------------------------------------- 1506 * Sysfs device attribute defines and structs 1507 * --------------------------------------------------------------------- */ 1508 1509 /* Voltages 0-7 */ 1510 1511 #define SENSOR_DEVICE_ATTR_IN(ix) \ 1512 static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \ 1513 show_in, NULL, SYS_IN_INPUT, ix); \ 1514 static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \ 1515 show_in, set_in, SYS_IN_MIN, ix); \ 1516 static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \ 1517 show_in, set_in, SYS_IN_MAX, ix); \ 1518 static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \ 1519 show_in, NULL, SYS_IN_ALARM, ix) 1520 1521 SENSOR_DEVICE_ATTR_IN(0); 1522 SENSOR_DEVICE_ATTR_IN(1); 1523 SENSOR_DEVICE_ATTR_IN(2); 1524 SENSOR_DEVICE_ATTR_IN(3); 1525 SENSOR_DEVICE_ATTR_IN(4); 1526 SENSOR_DEVICE_ATTR_IN(5); 1527 SENSOR_DEVICE_ATTR_IN(6); 1528 SENSOR_DEVICE_ATTR_IN(7); 1529 1530 /* Temperatures 1-3 */ 1531 1532 #define SENSOR_DEVICE_ATTR_TEMP(ix) \ 1533 static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \ 1534 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \ 1535 static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \ 1536 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \ 1537 static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \ 1538 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \ 1539 static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \ 1540 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \ 1541 static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \ 1542 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \ 1543 static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \ 1544 show_temp, NULL, SYS_TEMP_FAULT, ix-1) 1545 1546 SENSOR_DEVICE_ATTR_TEMP(1); 1547 SENSOR_DEVICE_ATTR_TEMP(2); 1548 SENSOR_DEVICE_ATTR_TEMP(3); 1549 1550 /* Zones 1-3 */ 1551 1552 #define SENSOR_DEVICE_ATTR_ZONE(ix) \ 1553 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \ 1554 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \ 1555 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \ 1556 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \ 1557 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \ 1558 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \ 1559 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \ 1560 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \ 1561 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \ 1562 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1) 1563 1564 SENSOR_DEVICE_ATTR_ZONE(1); 1565 SENSOR_DEVICE_ATTR_ZONE(2); 1566 SENSOR_DEVICE_ATTR_ZONE(3); 1567 1568 /* Fans 1-4 */ 1569 1570 #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \ 1571 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \ 1572 show_fan, NULL, SYS_FAN_INPUT, ix-1); \ 1573 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ 1574 show_fan, set_fan, SYS_FAN_MIN, ix-1); \ 1575 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \ 1576 show_fan, NULL, SYS_FAN_ALARM, ix-1); \ 1577 static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \ 1578 show_fan, set_fan, SYS_FAN_TYPE, ix-1) 1579 1580 SENSOR_DEVICE_ATTR_FAN_1TO4(1); 1581 SENSOR_DEVICE_ATTR_FAN_1TO4(2); 1582 SENSOR_DEVICE_ATTR_FAN_1TO4(3); 1583 SENSOR_DEVICE_ATTR_FAN_1TO4(4); 1584 1585 /* Fans 5-6 */ 1586 1587 #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \ 1588 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \ 1589 show_fan, NULL, SYS_FAN_INPUT, ix-1); \ 1590 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ 1591 show_fan, set_fan, SYS_FAN_MIN, ix-1); \ 1592 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \ 1593 show_fan, NULL, SYS_FAN_ALARM, ix-1); \ 1594 static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \ 1595 show_fan, set_fan, SYS_FAN_MAX, ix-1) 1596 1597 SENSOR_DEVICE_ATTR_FAN_5TO6(5); 1598 SENSOR_DEVICE_ATTR_FAN_5TO6(6); 1599 1600 /* PWMs 1-3 */ 1601 1602 #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \ 1603 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \ 1604 show_pwm, set_pwm, SYS_PWM, ix-1); \ 1605 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \ 1606 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \ 1607 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \ 1608 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \ 1609 static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \ 1610 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \ 1611 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \ 1612 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \ 1613 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \ 1614 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \ 1615 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \ 1616 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \ 1617 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \ 1618 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1) 1619 1620 SENSOR_DEVICE_ATTR_PWM_1TO3(1); 1621 SENSOR_DEVICE_ATTR_PWM_1TO3(2); 1622 SENSOR_DEVICE_ATTR_PWM_1TO3(3); 1623 1624 /* PWMs 5-6 */ 1625 1626 #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \ 1627 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \ 1628 show_pwm, set_pwm, SYS_PWM, ix-1); \ 1629 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \ 1630 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \ 1631 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \ 1632 show_pwm, NULL, SYS_PWM_ENABLE, ix-1) 1633 1634 SENSOR_DEVICE_ATTR_PWM_5TO6(5); 1635 SENSOR_DEVICE_ATTR_PWM_5TO6(6); 1636 1637 /* Misc */ 1638 1639 static DEVICE_ATTR_RW(vrm); 1640 static DEVICE_ATTR_RO(cpu0_vid); 1641 static DEVICE_ATTR_RO(name); /* for ISA devices */ 1642 1643 /* 1644 * This struct holds all the attributes that are always present and need to be 1645 * created unconditionally. The attributes that need modification of their 1646 * permissions are created read-only and write permissions are added or removed 1647 * on the fly when required 1648 */ 1649 static struct attribute *dme1737_attr[] = { 1650 /* Voltages */ 1651 &sensor_dev_attr_in0_input.dev_attr.attr, 1652 &sensor_dev_attr_in0_min.dev_attr.attr, 1653 &sensor_dev_attr_in0_max.dev_attr.attr, 1654 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1655 &sensor_dev_attr_in1_input.dev_attr.attr, 1656 &sensor_dev_attr_in1_min.dev_attr.attr, 1657 &sensor_dev_attr_in1_max.dev_attr.attr, 1658 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1659 &sensor_dev_attr_in2_input.dev_attr.attr, 1660 &sensor_dev_attr_in2_min.dev_attr.attr, 1661 &sensor_dev_attr_in2_max.dev_attr.attr, 1662 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1663 &sensor_dev_attr_in3_input.dev_attr.attr, 1664 &sensor_dev_attr_in3_min.dev_attr.attr, 1665 &sensor_dev_attr_in3_max.dev_attr.attr, 1666 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1667 &sensor_dev_attr_in4_input.dev_attr.attr, 1668 &sensor_dev_attr_in4_min.dev_attr.attr, 1669 &sensor_dev_attr_in4_max.dev_attr.attr, 1670 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1671 &sensor_dev_attr_in5_input.dev_attr.attr, 1672 &sensor_dev_attr_in5_min.dev_attr.attr, 1673 &sensor_dev_attr_in5_max.dev_attr.attr, 1674 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1675 &sensor_dev_attr_in6_input.dev_attr.attr, 1676 &sensor_dev_attr_in6_min.dev_attr.attr, 1677 &sensor_dev_attr_in6_max.dev_attr.attr, 1678 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1679 /* Temperatures */ 1680 &sensor_dev_attr_temp1_input.dev_attr.attr, 1681 &sensor_dev_attr_temp1_min.dev_attr.attr, 1682 &sensor_dev_attr_temp1_max.dev_attr.attr, 1683 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1684 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1685 &sensor_dev_attr_temp2_input.dev_attr.attr, 1686 &sensor_dev_attr_temp2_min.dev_attr.attr, 1687 &sensor_dev_attr_temp2_max.dev_attr.attr, 1688 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1689 &sensor_dev_attr_temp2_fault.dev_attr.attr, 1690 &sensor_dev_attr_temp3_input.dev_attr.attr, 1691 &sensor_dev_attr_temp3_min.dev_attr.attr, 1692 &sensor_dev_attr_temp3_max.dev_attr.attr, 1693 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1694 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1695 /* Zones */ 1696 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr, 1697 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr, 1698 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr, 1699 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr, 1700 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr, 1701 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr, 1702 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr, 1703 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr, 1704 NULL 1705 }; 1706 1707 static const struct attribute_group dme1737_group = { 1708 .attrs = dme1737_attr, 1709 }; 1710 1711 /* 1712 * The following struct holds temp offset attributes, which are not available 1713 * in all chips. The following chips support them: 1714 * DME1737, SCH311x 1715 */ 1716 static struct attribute *dme1737_temp_offset_attr[] = { 1717 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1718 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1719 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1720 NULL 1721 }; 1722 1723 static const struct attribute_group dme1737_temp_offset_group = { 1724 .attrs = dme1737_temp_offset_attr, 1725 }; 1726 1727 /* 1728 * The following struct holds VID related attributes, which are not available 1729 * in all chips. The following chips support them: 1730 * DME1737 1731 */ 1732 static struct attribute *dme1737_vid_attr[] = { 1733 &dev_attr_vrm.attr, 1734 &dev_attr_cpu0_vid.attr, 1735 NULL 1736 }; 1737 1738 static const struct attribute_group dme1737_vid_group = { 1739 .attrs = dme1737_vid_attr, 1740 }; 1741 1742 /* 1743 * The following struct holds temp zone 3 related attributes, which are not 1744 * available in all chips. The following chips support them: 1745 * DME1737, SCH311x, SCH5027 1746 */ 1747 static struct attribute *dme1737_zone3_attr[] = { 1748 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr, 1749 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr, 1750 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr, 1751 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr, 1752 NULL 1753 }; 1754 1755 static const struct attribute_group dme1737_zone3_group = { 1756 .attrs = dme1737_zone3_attr, 1757 }; 1758 1759 1760 /* 1761 * The following struct holds temp zone hysteresis related attributes, which 1762 * are not available in all chips. The following chips support them: 1763 * DME1737, SCH311x 1764 */ 1765 static struct attribute *dme1737_zone_hyst_attr[] = { 1766 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr, 1767 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr, 1768 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr, 1769 NULL 1770 }; 1771 1772 static const struct attribute_group dme1737_zone_hyst_group = { 1773 .attrs = dme1737_zone_hyst_attr, 1774 }; 1775 1776 /* 1777 * The following struct holds voltage in7 related attributes, which 1778 * are not available in all chips. The following chips support them: 1779 * SCH5127 1780 */ 1781 static struct attribute *dme1737_in7_attr[] = { 1782 &sensor_dev_attr_in7_input.dev_attr.attr, 1783 &sensor_dev_attr_in7_min.dev_attr.attr, 1784 &sensor_dev_attr_in7_max.dev_attr.attr, 1785 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1786 NULL 1787 }; 1788 1789 static const struct attribute_group dme1737_in7_group = { 1790 .attrs = dme1737_in7_attr, 1791 }; 1792 1793 /* 1794 * The following structs hold the PWM attributes, some of which are optional. 1795 * Their creation depends on the chip configuration which is determined during 1796 * module load. 1797 */ 1798 static struct attribute *dme1737_pwm1_attr[] = { 1799 &sensor_dev_attr_pwm1.dev_attr.attr, 1800 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1801 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1802 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr, 1803 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr, 1804 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1805 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1806 NULL 1807 }; 1808 static struct attribute *dme1737_pwm2_attr[] = { 1809 &sensor_dev_attr_pwm2.dev_attr.attr, 1810 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1811 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1812 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr, 1813 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr, 1814 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1815 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1816 NULL 1817 }; 1818 static struct attribute *dme1737_pwm3_attr[] = { 1819 &sensor_dev_attr_pwm3.dev_attr.attr, 1820 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1821 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1822 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr, 1823 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr, 1824 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1825 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1826 NULL 1827 }; 1828 static struct attribute *dme1737_pwm5_attr[] = { 1829 &sensor_dev_attr_pwm5.dev_attr.attr, 1830 &sensor_dev_attr_pwm5_freq.dev_attr.attr, 1831 &sensor_dev_attr_pwm5_enable.dev_attr.attr, 1832 NULL 1833 }; 1834 static struct attribute *dme1737_pwm6_attr[] = { 1835 &sensor_dev_attr_pwm6.dev_attr.attr, 1836 &sensor_dev_attr_pwm6_freq.dev_attr.attr, 1837 &sensor_dev_attr_pwm6_enable.dev_attr.attr, 1838 NULL 1839 }; 1840 1841 static const struct attribute_group dme1737_pwm_group[] = { 1842 { .attrs = dme1737_pwm1_attr }, 1843 { .attrs = dme1737_pwm2_attr }, 1844 { .attrs = dme1737_pwm3_attr }, 1845 { .attrs = NULL }, 1846 { .attrs = dme1737_pwm5_attr }, 1847 { .attrs = dme1737_pwm6_attr }, 1848 }; 1849 1850 /* 1851 * The following struct holds auto PWM min attributes, which are not available 1852 * in all chips. Their creation depends on the chip type which is determined 1853 * during module load. 1854 */ 1855 static struct attribute *dme1737_auto_pwm_min_attr[] = { 1856 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1857 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1858 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1859 }; 1860 1861 /* 1862 * The following structs hold the fan attributes, some of which are optional. 1863 * Their creation depends on the chip configuration which is determined during 1864 * module load. 1865 */ 1866 static struct attribute *dme1737_fan1_attr[] = { 1867 &sensor_dev_attr_fan1_input.dev_attr.attr, 1868 &sensor_dev_attr_fan1_min.dev_attr.attr, 1869 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1870 &sensor_dev_attr_fan1_type.dev_attr.attr, 1871 NULL 1872 }; 1873 static struct attribute *dme1737_fan2_attr[] = { 1874 &sensor_dev_attr_fan2_input.dev_attr.attr, 1875 &sensor_dev_attr_fan2_min.dev_attr.attr, 1876 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1877 &sensor_dev_attr_fan2_type.dev_attr.attr, 1878 NULL 1879 }; 1880 static struct attribute *dme1737_fan3_attr[] = { 1881 &sensor_dev_attr_fan3_input.dev_attr.attr, 1882 &sensor_dev_attr_fan3_min.dev_attr.attr, 1883 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1884 &sensor_dev_attr_fan3_type.dev_attr.attr, 1885 NULL 1886 }; 1887 static struct attribute *dme1737_fan4_attr[] = { 1888 &sensor_dev_attr_fan4_input.dev_attr.attr, 1889 &sensor_dev_attr_fan4_min.dev_attr.attr, 1890 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1891 &sensor_dev_attr_fan4_type.dev_attr.attr, 1892 NULL 1893 }; 1894 static struct attribute *dme1737_fan5_attr[] = { 1895 &sensor_dev_attr_fan5_input.dev_attr.attr, 1896 &sensor_dev_attr_fan5_min.dev_attr.attr, 1897 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1898 &sensor_dev_attr_fan5_max.dev_attr.attr, 1899 NULL 1900 }; 1901 static struct attribute *dme1737_fan6_attr[] = { 1902 &sensor_dev_attr_fan6_input.dev_attr.attr, 1903 &sensor_dev_attr_fan6_min.dev_attr.attr, 1904 &sensor_dev_attr_fan6_alarm.dev_attr.attr, 1905 &sensor_dev_attr_fan6_max.dev_attr.attr, 1906 NULL 1907 }; 1908 1909 static const struct attribute_group dme1737_fan_group[] = { 1910 { .attrs = dme1737_fan1_attr }, 1911 { .attrs = dme1737_fan2_attr }, 1912 { .attrs = dme1737_fan3_attr }, 1913 { .attrs = dme1737_fan4_attr }, 1914 { .attrs = dme1737_fan5_attr }, 1915 { .attrs = dme1737_fan6_attr }, 1916 }; 1917 1918 /* 1919 * The permissions of the following zone attributes are changed to read- 1920 * writeable if the chip is *not* locked. Otherwise they stay read-only. 1921 */ 1922 static struct attribute *dme1737_zone_chmod_attr[] = { 1923 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr, 1924 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr, 1925 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr, 1926 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr, 1927 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr, 1928 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr, 1929 NULL 1930 }; 1931 1932 static const struct attribute_group dme1737_zone_chmod_group = { 1933 .attrs = dme1737_zone_chmod_attr, 1934 }; 1935 1936 1937 /* 1938 * The permissions of the following zone 3 attributes are changed to read- 1939 * writeable if the chip is *not* locked. Otherwise they stay read-only. 1940 */ 1941 static struct attribute *dme1737_zone3_chmod_attr[] = { 1942 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr, 1943 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr, 1944 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr, 1945 NULL 1946 }; 1947 1948 static const struct attribute_group dme1737_zone3_chmod_group = { 1949 .attrs = dme1737_zone3_chmod_attr, 1950 }; 1951 1952 /* 1953 * The permissions of the following PWM attributes are changed to read- 1954 * writeable if the chip is *not* locked and the respective PWM is available. 1955 * Otherwise they stay read-only. 1956 */ 1957 static struct attribute *dme1737_pwm1_chmod_attr[] = { 1958 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1959 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1960 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr, 1961 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr, 1962 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1963 NULL 1964 }; 1965 static struct attribute *dme1737_pwm2_chmod_attr[] = { 1966 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1967 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1968 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr, 1969 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr, 1970 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1971 NULL 1972 }; 1973 static struct attribute *dme1737_pwm3_chmod_attr[] = { 1974 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1975 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1976 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr, 1977 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr, 1978 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1979 NULL 1980 }; 1981 static struct attribute *dme1737_pwm5_chmod_attr[] = { 1982 &sensor_dev_attr_pwm5.dev_attr.attr, 1983 &sensor_dev_attr_pwm5_freq.dev_attr.attr, 1984 NULL 1985 }; 1986 static struct attribute *dme1737_pwm6_chmod_attr[] = { 1987 &sensor_dev_attr_pwm6.dev_attr.attr, 1988 &sensor_dev_attr_pwm6_freq.dev_attr.attr, 1989 NULL 1990 }; 1991 1992 static const struct attribute_group dme1737_pwm_chmod_group[] = { 1993 { .attrs = dme1737_pwm1_chmod_attr }, 1994 { .attrs = dme1737_pwm2_chmod_attr }, 1995 { .attrs = dme1737_pwm3_chmod_attr }, 1996 { .attrs = NULL }, 1997 { .attrs = dme1737_pwm5_chmod_attr }, 1998 { .attrs = dme1737_pwm6_chmod_attr }, 1999 }; 2000 2001 /* 2002 * Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the 2003 * chip is not locked. Otherwise they are read-only. 2004 */ 2005 static struct attribute *dme1737_pwm_chmod_attr[] = { 2006 &sensor_dev_attr_pwm1.dev_attr.attr, 2007 &sensor_dev_attr_pwm2.dev_attr.attr, 2008 &sensor_dev_attr_pwm3.dev_attr.attr, 2009 }; 2010 2011 /* --------------------------------------------------------------------- 2012 * Super-IO functions 2013 * --------------------------------------------------------------------- */ 2014 dme1737_sio_enter(int sio_cip)2015 static inline void dme1737_sio_enter(int sio_cip) 2016 { 2017 outb(0x55, sio_cip); 2018 } 2019 dme1737_sio_exit(int sio_cip)2020 static inline void dme1737_sio_exit(int sio_cip) 2021 { 2022 outb(0xaa, sio_cip); 2023 } 2024 dme1737_sio_inb(int sio_cip,int reg)2025 static inline int dme1737_sio_inb(int sio_cip, int reg) 2026 { 2027 outb(reg, sio_cip); 2028 return inb(sio_cip + 1); 2029 } 2030 dme1737_sio_outb(int sio_cip,int reg,int val)2031 static inline void dme1737_sio_outb(int sio_cip, int reg, int val) 2032 { 2033 outb(reg, sio_cip); 2034 outb(val, sio_cip + 1); 2035 } 2036 2037 /* --------------------------------------------------------------------- 2038 * Device initialization 2039 * --------------------------------------------------------------------- */ 2040 2041 static int dme1737_i2c_get_features(int, struct dme1737_data*); 2042 dme1737_chmod_file(struct device * dev,struct attribute * attr,umode_t mode)2043 static void dme1737_chmod_file(struct device *dev, 2044 struct attribute *attr, umode_t mode) 2045 { 2046 if (sysfs_chmod_file(&dev->kobj, attr, mode)) { 2047 dev_warn(dev, "Failed to change permissions of %s.\n", 2048 attr->name); 2049 } 2050 } 2051 dme1737_chmod_group(struct device * dev,const struct attribute_group * group,umode_t mode)2052 static void dme1737_chmod_group(struct device *dev, 2053 const struct attribute_group *group, 2054 umode_t mode) 2055 { 2056 struct attribute **attr; 2057 2058 for (attr = group->attrs; *attr; attr++) 2059 dme1737_chmod_file(dev, *attr, mode); 2060 } 2061 dme1737_remove_files(struct device * dev)2062 static void dme1737_remove_files(struct device *dev) 2063 { 2064 struct dme1737_data *data = dev_get_drvdata(dev); 2065 int ix; 2066 2067 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) { 2068 if (data->has_features & HAS_FAN(ix)) { 2069 sysfs_remove_group(&dev->kobj, 2070 &dme1737_fan_group[ix]); 2071 } 2072 } 2073 2074 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { 2075 if (data->has_features & HAS_PWM(ix)) { 2076 sysfs_remove_group(&dev->kobj, 2077 &dme1737_pwm_group[ix]); 2078 if ((data->has_features & HAS_PWM_MIN) && ix < 3) { 2079 sysfs_remove_file(&dev->kobj, 2080 dme1737_auto_pwm_min_attr[ix]); 2081 } 2082 } 2083 } 2084 2085 if (data->has_features & HAS_TEMP_OFFSET) 2086 sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group); 2087 if (data->has_features & HAS_VID) 2088 sysfs_remove_group(&dev->kobj, &dme1737_vid_group); 2089 if (data->has_features & HAS_ZONE3) 2090 sysfs_remove_group(&dev->kobj, &dme1737_zone3_group); 2091 if (data->has_features & HAS_ZONE_HYST) 2092 sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group); 2093 if (data->has_features & HAS_IN7) 2094 sysfs_remove_group(&dev->kobj, &dme1737_in7_group); 2095 sysfs_remove_group(&dev->kobj, &dme1737_group); 2096 2097 if (!data->client) 2098 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr); 2099 } 2100 dme1737_create_files(struct device * dev)2101 static int dme1737_create_files(struct device *dev) 2102 { 2103 struct dme1737_data *data = dev_get_drvdata(dev); 2104 int err, ix; 2105 2106 /* Create a name attribute for ISA devices */ 2107 if (!data->client) { 2108 err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr); 2109 if (err) 2110 goto exit; 2111 } 2112 2113 /* Create standard sysfs attributes */ 2114 err = sysfs_create_group(&dev->kobj, &dme1737_group); 2115 if (err) 2116 goto exit_remove; 2117 2118 /* Create chip-dependent sysfs attributes */ 2119 if (data->has_features & HAS_TEMP_OFFSET) { 2120 err = sysfs_create_group(&dev->kobj, 2121 &dme1737_temp_offset_group); 2122 if (err) 2123 goto exit_remove; 2124 } 2125 if (data->has_features & HAS_VID) { 2126 err = sysfs_create_group(&dev->kobj, &dme1737_vid_group); 2127 if (err) 2128 goto exit_remove; 2129 } 2130 if (data->has_features & HAS_ZONE3) { 2131 err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group); 2132 if (err) 2133 goto exit_remove; 2134 } 2135 if (data->has_features & HAS_ZONE_HYST) { 2136 err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group); 2137 if (err) 2138 goto exit_remove; 2139 } 2140 if (data->has_features & HAS_IN7) { 2141 err = sysfs_create_group(&dev->kobj, &dme1737_in7_group); 2142 if (err) 2143 goto exit_remove; 2144 } 2145 2146 /* Create fan sysfs attributes */ 2147 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) { 2148 if (data->has_features & HAS_FAN(ix)) { 2149 err = sysfs_create_group(&dev->kobj, 2150 &dme1737_fan_group[ix]); 2151 if (err) 2152 goto exit_remove; 2153 } 2154 } 2155 2156 /* Create PWM sysfs attributes */ 2157 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { 2158 if (data->has_features & HAS_PWM(ix)) { 2159 err = sysfs_create_group(&dev->kobj, 2160 &dme1737_pwm_group[ix]); 2161 if (err) 2162 goto exit_remove; 2163 if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) { 2164 err = sysfs_create_file(&dev->kobj, 2165 dme1737_auto_pwm_min_attr[ix]); 2166 if (err) 2167 goto exit_remove; 2168 } 2169 } 2170 } 2171 2172 /* 2173 * Inform if the device is locked. Otherwise change the permissions of 2174 * selected attributes from read-only to read-writeable. 2175 */ 2176 if (data->config & 0x02) { 2177 dev_info(dev, 2178 "Device is locked. Some attributes will be read-only.\n"); 2179 } else { 2180 /* Change permissions of zone sysfs attributes */ 2181 dme1737_chmod_group(dev, &dme1737_zone_chmod_group, 2182 S_IRUGO | S_IWUSR); 2183 2184 /* Change permissions of chip-dependent sysfs attributes */ 2185 if (data->has_features & HAS_TEMP_OFFSET) { 2186 dme1737_chmod_group(dev, &dme1737_temp_offset_group, 2187 S_IRUGO | S_IWUSR); 2188 } 2189 if (data->has_features & HAS_ZONE3) { 2190 dme1737_chmod_group(dev, &dme1737_zone3_chmod_group, 2191 S_IRUGO | S_IWUSR); 2192 } 2193 if (data->has_features & HAS_ZONE_HYST) { 2194 dme1737_chmod_group(dev, &dme1737_zone_hyst_group, 2195 S_IRUGO | S_IWUSR); 2196 } 2197 2198 /* Change permissions of PWM sysfs attributes */ 2199 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) { 2200 if (data->has_features & HAS_PWM(ix)) { 2201 dme1737_chmod_group(dev, 2202 &dme1737_pwm_chmod_group[ix], 2203 S_IRUGO | S_IWUSR); 2204 if ((data->has_features & HAS_PWM_MIN) && 2205 ix < 3) { 2206 dme1737_chmod_file(dev, 2207 dme1737_auto_pwm_min_attr[ix], 2208 S_IRUGO | S_IWUSR); 2209 } 2210 } 2211 } 2212 2213 /* Change permissions of pwm[1-3] if in manual mode */ 2214 for (ix = 0; ix < 3; ix++) { 2215 if ((data->has_features & HAS_PWM(ix)) && 2216 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) { 2217 dme1737_chmod_file(dev, 2218 dme1737_pwm_chmod_attr[ix], 2219 S_IRUGO | S_IWUSR); 2220 } 2221 } 2222 } 2223 2224 return 0; 2225 2226 exit_remove: 2227 dme1737_remove_files(dev); 2228 exit: 2229 return err; 2230 } 2231 dme1737_init_device(struct device * dev)2232 static int dme1737_init_device(struct device *dev) 2233 { 2234 struct dme1737_data *data = dev_get_drvdata(dev); 2235 struct i2c_client *client = data->client; 2236 int ix; 2237 u8 reg; 2238 2239 /* Point to the right nominal voltages array */ 2240 data->in_nominal = IN_NOMINAL(data->type); 2241 2242 data->config = dme1737_read(data, DME1737_REG_CONFIG); 2243 /* Inform if part is not monitoring/started */ 2244 if (!(data->config & 0x01)) { 2245 if (!force_start) { 2246 dev_err(dev, 2247 "Device is not monitoring. Use the force_start load parameter to override.\n"); 2248 return -EFAULT; 2249 } 2250 2251 /* Force monitoring */ 2252 data->config |= 0x01; 2253 dme1737_write(data, DME1737_REG_CONFIG, data->config); 2254 } 2255 /* Inform if part is not ready */ 2256 if (!(data->config & 0x04)) { 2257 dev_err(dev, "Device is not ready.\n"); 2258 return -EFAULT; 2259 } 2260 2261 /* 2262 * Determine which optional fan and pwm features are enabled (only 2263 * valid for I2C devices) 2264 */ 2265 if (client) { /* I2C chip */ 2266 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2); 2267 /* Check if optional fan3 input is enabled */ 2268 if (data->config2 & 0x04) 2269 data->has_features |= HAS_FAN(2); 2270 2271 /* 2272 * Fan4 and pwm3 are only available if the client's I2C address 2273 * is the default 0x2e. Otherwise the I/Os associated with 2274 * these functions are used for addr enable/select. 2275 */ 2276 if (client->addr == 0x2e) 2277 data->has_features |= HAS_FAN(3) | HAS_PWM(2); 2278 2279 /* 2280 * Determine which of the optional fan[5-6] and pwm[5-6] 2281 * features are enabled. For this, we need to query the runtime 2282 * registers through the Super-IO LPC interface. Try both 2283 * config ports 0x2e and 0x4e. 2284 */ 2285 if (dme1737_i2c_get_features(0x2e, data) && 2286 dme1737_i2c_get_features(0x4e, data)) { 2287 dev_warn(dev, 2288 "Failed to query Super-IO for optional features.\n"); 2289 } 2290 } 2291 2292 /* Fan[1-2] and pwm[1-2] are present in all chips */ 2293 data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1); 2294 2295 /* Chip-dependent features */ 2296 switch (data->type) { 2297 case dme1737: 2298 data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 | 2299 HAS_ZONE_HYST | HAS_PWM_MIN; 2300 break; 2301 case sch311x: 2302 data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 | 2303 HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2); 2304 break; 2305 case sch5027: 2306 data->has_features |= HAS_ZONE3; 2307 break; 2308 case sch5127: 2309 data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7; 2310 break; 2311 default: 2312 break; 2313 } 2314 2315 dev_info(dev, 2316 "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n", 2317 (data->has_features & HAS_PWM(2)) ? "yes" : "no", 2318 (data->has_features & HAS_PWM(4)) ? "yes" : "no", 2319 (data->has_features & HAS_PWM(5)) ? "yes" : "no", 2320 (data->has_features & HAS_FAN(2)) ? "yes" : "no", 2321 (data->has_features & HAS_FAN(3)) ? "yes" : "no", 2322 (data->has_features & HAS_FAN(4)) ? "yes" : "no", 2323 (data->has_features & HAS_FAN(5)) ? "yes" : "no"); 2324 2325 reg = dme1737_read(data, DME1737_REG_TACH_PWM); 2326 /* Inform if fan-to-pwm mapping differs from the default */ 2327 if (client && reg != 0xa4) { /* I2C chip */ 2328 dev_warn(dev, 2329 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, fan4->pwm%d. %s\n", 2330 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, 2331 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1, 2332 DO_REPORT); 2333 } else if (!client && reg != 0x24) { /* ISA chip */ 2334 dev_warn(dev, 2335 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. %s\n", 2336 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, 2337 ((reg >> 4) & 0x03) + 1, DO_REPORT); 2338 } 2339 2340 /* 2341 * Switch pwm[1-3] to manual mode if they are currently disabled and 2342 * set the duty-cycles to 0% (which is identical to the PWMs being 2343 * disabled). 2344 */ 2345 if (!(data->config & 0x02)) { 2346 for (ix = 0; ix < 3; ix++) { 2347 data->pwm_config[ix] = dme1737_read(data, 2348 DME1737_REG_PWM_CONFIG(ix)); 2349 if ((data->has_features & HAS_PWM(ix)) && 2350 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) { 2351 dev_info(dev, 2352 "Switching pwm%d to manual mode.\n", 2353 ix + 1); 2354 data->pwm_config[ix] = PWM_EN_TO_REG(1, 2355 data->pwm_config[ix]); 2356 dme1737_write(data, DME1737_REG_PWM(ix), 0); 2357 dme1737_write(data, 2358 DME1737_REG_PWM_CONFIG(ix), 2359 data->pwm_config[ix]); 2360 } 2361 } 2362 } 2363 2364 /* Initialize the default PWM auto channels zone (acz) assignments */ 2365 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */ 2366 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */ 2367 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */ 2368 2369 /* Set VRM */ 2370 if (data->has_features & HAS_VID) 2371 data->vrm = vid_which_vrm(); 2372 2373 return 0; 2374 } 2375 2376 /* --------------------------------------------------------------------- 2377 * I2C device detection and registration 2378 * --------------------------------------------------------------------- */ 2379 2380 static struct i2c_driver dme1737_i2c_driver; 2381 dme1737_i2c_get_features(int sio_cip,struct dme1737_data * data)2382 static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data) 2383 { 2384 int err = 0, reg; 2385 u16 addr; 2386 2387 dme1737_sio_enter(sio_cip); 2388 2389 /* 2390 * Check device ID 2391 * We currently know about two kinds of DME1737 and SCH5027. 2392 */ 2393 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20); 2394 if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 || 2395 reg == SCH5027_ID)) { 2396 err = -ENODEV; 2397 goto exit; 2398 } 2399 2400 /* Select logical device A (runtime registers) */ 2401 dme1737_sio_outb(sio_cip, 0x07, 0x0a); 2402 2403 /* Get the base address of the runtime registers */ 2404 addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | 2405 dme1737_sio_inb(sio_cip, 0x61); 2406 if (!addr) { 2407 err = -ENODEV; 2408 goto exit; 2409 } 2410 2411 /* 2412 * Read the runtime registers to determine which optional features 2413 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set 2414 * to '10' if the respective feature is enabled. 2415 */ 2416 if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */ 2417 data->has_features |= HAS_FAN(5); 2418 if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */ 2419 data->has_features |= HAS_PWM(5); 2420 if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */ 2421 data->has_features |= HAS_FAN(4); 2422 if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */ 2423 data->has_features |= HAS_PWM(4); 2424 2425 exit: 2426 dme1737_sio_exit(sio_cip); 2427 2428 return err; 2429 } 2430 2431 /* Return 0 if detection is successful, -ENODEV otherwise */ dme1737_i2c_detect(struct i2c_client * client,struct i2c_board_info * info)2432 static int dme1737_i2c_detect(struct i2c_client *client, 2433 struct i2c_board_info *info) 2434 { 2435 struct i2c_adapter *adapter = client->adapter; 2436 struct device *dev = &adapter->dev; 2437 u8 company, verstep = 0; 2438 const char *name; 2439 2440 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 2441 return -ENODEV; 2442 2443 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY); 2444 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP); 2445 2446 if (company == DME1737_COMPANY_SMSC && 2447 verstep == SCH5027_VERSTEP) { 2448 name = "sch5027"; 2449 } else if (company == DME1737_COMPANY_SMSC && 2450 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) { 2451 name = "dme1737"; 2452 } else { 2453 return -ENODEV; 2454 } 2455 2456 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n", 2457 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737", 2458 client->addr, verstep); 2459 strscpy(info->type, name, I2C_NAME_SIZE); 2460 2461 return 0; 2462 } 2463 2464 static const struct i2c_device_id dme1737_id[]; 2465 dme1737_i2c_probe(struct i2c_client * client)2466 static int dme1737_i2c_probe(struct i2c_client *client) 2467 { 2468 struct dme1737_data *data; 2469 struct device *dev = &client->dev; 2470 int err; 2471 2472 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL); 2473 if (!data) 2474 return -ENOMEM; 2475 2476 i2c_set_clientdata(client, data); 2477 data->type = i2c_match_id(dme1737_id, client)->driver_data; 2478 data->client = client; 2479 data->name = client->name; 2480 mutex_init(&data->update_lock); 2481 2482 /* Initialize the DME1737 chip */ 2483 err = dme1737_init_device(dev); 2484 if (err) { 2485 dev_err(dev, "Failed to initialize device.\n"); 2486 return err; 2487 } 2488 2489 /* Create sysfs files */ 2490 err = dme1737_create_files(dev); 2491 if (err) { 2492 dev_err(dev, "Failed to create sysfs files.\n"); 2493 return err; 2494 } 2495 2496 /* Register device */ 2497 data->hwmon_dev = hwmon_device_register(dev); 2498 if (IS_ERR(data->hwmon_dev)) { 2499 dev_err(dev, "Failed to register device.\n"); 2500 err = PTR_ERR(data->hwmon_dev); 2501 goto exit_remove; 2502 } 2503 2504 return 0; 2505 2506 exit_remove: 2507 dme1737_remove_files(dev); 2508 return err; 2509 } 2510 dme1737_i2c_remove(struct i2c_client * client)2511 static void dme1737_i2c_remove(struct i2c_client *client) 2512 { 2513 struct dme1737_data *data = i2c_get_clientdata(client); 2514 2515 hwmon_device_unregister(data->hwmon_dev); 2516 dme1737_remove_files(&client->dev); 2517 } 2518 2519 static const struct i2c_device_id dme1737_id[] = { 2520 { "dme1737", dme1737 }, 2521 { "sch5027", sch5027 }, 2522 { } 2523 }; 2524 MODULE_DEVICE_TABLE(i2c, dme1737_id); 2525 2526 static struct i2c_driver dme1737_i2c_driver = { 2527 .class = I2C_CLASS_HWMON, 2528 .driver = { 2529 .name = "dme1737", 2530 }, 2531 .probe = dme1737_i2c_probe, 2532 .remove = dme1737_i2c_remove, 2533 .id_table = dme1737_id, 2534 .detect = dme1737_i2c_detect, 2535 .address_list = normal_i2c, 2536 }; 2537 2538 /* --------------------------------------------------------------------- 2539 * ISA device detection and registration 2540 * --------------------------------------------------------------------- */ 2541 dme1737_isa_detect(int sio_cip,unsigned short * addr)2542 static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr) 2543 { 2544 int err = 0, reg; 2545 unsigned short base_addr; 2546 2547 dme1737_sio_enter(sio_cip); 2548 2549 /* 2550 * Check device ID 2551 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127 2552 */ 2553 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20); 2554 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID || 2555 reg == SCH5127_ID)) { 2556 err = -ENODEV; 2557 goto exit; 2558 } 2559 2560 /* Select logical device A (runtime registers) */ 2561 dme1737_sio_outb(sio_cip, 0x07, 0x0a); 2562 2563 /* Get the base address of the runtime registers */ 2564 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | 2565 dme1737_sio_inb(sio_cip, 0x61); 2566 if (!base_addr) { 2567 pr_err("Base address not set\n"); 2568 err = -ENODEV; 2569 goto exit; 2570 } 2571 2572 /* 2573 * Access to the hwmon registers is through an index/data register 2574 * pair located at offset 0x70/0x71. 2575 */ 2576 *addr = base_addr + 0x70; 2577 2578 exit: 2579 dme1737_sio_exit(sio_cip); 2580 return err; 2581 } 2582 dme1737_isa_device_add(unsigned short addr)2583 static int __init dme1737_isa_device_add(unsigned short addr) 2584 { 2585 struct resource res = { 2586 .start = addr, 2587 .end = addr + DME1737_EXTENT - 1, 2588 .name = "dme1737", 2589 .flags = IORESOURCE_IO, 2590 }; 2591 int err; 2592 2593 err = acpi_check_resource_conflict(&res); 2594 if (err) 2595 goto exit; 2596 2597 pdev = platform_device_alloc("dme1737", addr); 2598 if (!pdev) { 2599 pr_err("Failed to allocate device\n"); 2600 err = -ENOMEM; 2601 goto exit; 2602 } 2603 2604 err = platform_device_add_resources(pdev, &res, 1); 2605 if (err) { 2606 pr_err("Failed to add device resource (err = %d)\n", err); 2607 goto exit_device_put; 2608 } 2609 2610 err = platform_device_add(pdev); 2611 if (err) { 2612 pr_err("Failed to add device (err = %d)\n", err); 2613 goto exit_device_put; 2614 } 2615 2616 return 0; 2617 2618 exit_device_put: 2619 platform_device_put(pdev); 2620 pdev = NULL; 2621 exit: 2622 return err; 2623 } 2624 dme1737_isa_probe(struct platform_device * pdev)2625 static int dme1737_isa_probe(struct platform_device *pdev) 2626 { 2627 u8 company, device; 2628 struct resource *res; 2629 struct dme1737_data *data; 2630 struct device *dev = &pdev->dev; 2631 int err; 2632 2633 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 2634 if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) { 2635 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", 2636 (unsigned short)res->start, 2637 (unsigned short)res->start + DME1737_EXTENT - 1); 2638 return -EBUSY; 2639 } 2640 2641 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL); 2642 if (!data) 2643 return -ENOMEM; 2644 2645 data->addr = res->start; 2646 platform_set_drvdata(pdev, data); 2647 2648 /* Skip chip detection if module is loaded with force_id parameter */ 2649 switch (force_id) { 2650 case SCH3112_ID: 2651 case SCH3114_ID: 2652 case SCH3116_ID: 2653 data->type = sch311x; 2654 break; 2655 case SCH5127_ID: 2656 data->type = sch5127; 2657 break; 2658 default: 2659 company = dme1737_read(data, DME1737_REG_COMPANY); 2660 device = dme1737_read(data, DME1737_REG_DEVICE); 2661 2662 if ((company == DME1737_COMPANY_SMSC) && 2663 (device == SCH311X_DEVICE)) { 2664 data->type = sch311x; 2665 } else if ((company == DME1737_COMPANY_SMSC) && 2666 (device == SCH5127_DEVICE)) { 2667 data->type = sch5127; 2668 } else { 2669 return -ENODEV; 2670 } 2671 } 2672 2673 if (data->type == sch5127) 2674 data->name = "sch5127"; 2675 else 2676 data->name = "sch311x"; 2677 2678 /* Initialize the mutex */ 2679 mutex_init(&data->update_lock); 2680 2681 dev_info(dev, "Found a %s chip at 0x%04x\n", 2682 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr); 2683 2684 /* Initialize the chip */ 2685 err = dme1737_init_device(dev); 2686 if (err) { 2687 dev_err(dev, "Failed to initialize device.\n"); 2688 return err; 2689 } 2690 2691 /* Create sysfs files */ 2692 err = dme1737_create_files(dev); 2693 if (err) { 2694 dev_err(dev, "Failed to create sysfs files.\n"); 2695 return err; 2696 } 2697 2698 /* Register device */ 2699 data->hwmon_dev = hwmon_device_register(dev); 2700 if (IS_ERR(data->hwmon_dev)) { 2701 dev_err(dev, "Failed to register device.\n"); 2702 err = PTR_ERR(data->hwmon_dev); 2703 goto exit_remove_files; 2704 } 2705 2706 return 0; 2707 2708 exit_remove_files: 2709 dme1737_remove_files(dev); 2710 return err; 2711 } 2712 dme1737_isa_remove(struct platform_device * pdev)2713 static int dme1737_isa_remove(struct platform_device *pdev) 2714 { 2715 struct dme1737_data *data = platform_get_drvdata(pdev); 2716 2717 hwmon_device_unregister(data->hwmon_dev); 2718 dme1737_remove_files(&pdev->dev); 2719 2720 return 0; 2721 } 2722 2723 static struct platform_driver dme1737_isa_driver = { 2724 .driver = { 2725 .name = "dme1737", 2726 }, 2727 .probe = dme1737_isa_probe, 2728 .remove = dme1737_isa_remove, 2729 }; 2730 2731 /* --------------------------------------------------------------------- 2732 * Module initialization and cleanup 2733 * --------------------------------------------------------------------- */ 2734 dme1737_init(void)2735 static int __init dme1737_init(void) 2736 { 2737 int err; 2738 unsigned short addr; 2739 2740 err = i2c_add_driver(&dme1737_i2c_driver); 2741 if (err) 2742 goto exit; 2743 2744 if (dme1737_isa_detect(0x2e, &addr) && 2745 dme1737_isa_detect(0x4e, &addr) && 2746 (!probe_all_addr || 2747 (dme1737_isa_detect(0x162e, &addr) && 2748 dme1737_isa_detect(0x164e, &addr)))) { 2749 /* Return 0 if we didn't find an ISA device */ 2750 return 0; 2751 } 2752 2753 err = platform_driver_register(&dme1737_isa_driver); 2754 if (err) 2755 goto exit_del_i2c_driver; 2756 2757 /* Sets global pdev as a side effect */ 2758 err = dme1737_isa_device_add(addr); 2759 if (err) 2760 goto exit_del_isa_driver; 2761 2762 return 0; 2763 2764 exit_del_isa_driver: 2765 platform_driver_unregister(&dme1737_isa_driver); 2766 exit_del_i2c_driver: 2767 i2c_del_driver(&dme1737_i2c_driver); 2768 exit: 2769 return err; 2770 } 2771 dme1737_exit(void)2772 static void __exit dme1737_exit(void) 2773 { 2774 if (pdev) { 2775 platform_device_unregister(pdev); 2776 platform_driver_unregister(&dme1737_isa_driver); 2777 } 2778 2779 i2c_del_driver(&dme1737_i2c_driver); 2780 } 2781 2782 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>"); 2783 MODULE_DESCRIPTION("DME1737 sensors"); 2784 MODULE_LICENSE("GPL"); 2785 2786 module_init(dme1737_init); 2787 module_exit(dme1737_exit); 2788