1 /* 2 * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware 3 * monitoring 4 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and 5 * Kyosti Malkki <kmalkki@cc.hut.fi> 6 * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and 7 * Jean Delvare <khali@linux-fr.org> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22 * 23 * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare 24 * and advice of Greg Kroah-Hartman. 25 * 26 * Notes about the port: 27 * Release 0x00 of the GL518SM chipset doesn't support reading of in0, 28 * in1 nor in2. The original driver had an ugly workaround to get them 29 * anyway (changing limits and watching alarms trigger and wear off). 30 * We did not keep that part of the original driver in the Linux 2.6 31 * version, since it was making the driver significantly more complex 32 * with no real benefit. 33 * 34 * History: 35 * 2004-01-28 Original port. (Hong-Gunn Chew) 36 * 2004-01-31 Code review and approval. (Jean Delvare) 37 */ 38 39 #include <linux/module.h> 40 #include <linux/init.h> 41 #include <linux/slab.h> 42 #include <linux/jiffies.h> 43 #include <linux/i2c.h> 44 #include <linux/hwmon.h> 45 #include <linux/err.h> 46 #include <linux/mutex.h> 47 #include <linux/sysfs.h> 48 49 /* Addresses to scan */ 50 static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; 51 52 /* Insmod parameters */ 53 I2C_CLIENT_INSMOD_2(gl518sm_r00, gl518sm_r80); 54 55 /* Many GL518 constants specified below */ 56 57 /* The GL518 registers */ 58 #define GL518_REG_CHIP_ID 0x00 59 #define GL518_REG_REVISION 0x01 60 #define GL518_REG_VENDOR_ID 0x02 61 #define GL518_REG_CONF 0x03 62 #define GL518_REG_TEMP_IN 0x04 63 #define GL518_REG_TEMP_MAX 0x05 64 #define GL518_REG_TEMP_HYST 0x06 65 #define GL518_REG_FAN_COUNT 0x07 66 #define GL518_REG_FAN_LIMIT 0x08 67 #define GL518_REG_VIN1_LIMIT 0x09 68 #define GL518_REG_VIN2_LIMIT 0x0a 69 #define GL518_REG_VIN3_LIMIT 0x0b 70 #define GL518_REG_VDD_LIMIT 0x0c 71 #define GL518_REG_VIN3 0x0d 72 #define GL518_REG_MISC 0x0f 73 #define GL518_REG_ALARM 0x10 74 #define GL518_REG_MASK 0x11 75 #define GL518_REG_INT 0x12 76 #define GL518_REG_VIN2 0x13 77 #define GL518_REG_VIN1 0x14 78 #define GL518_REG_VDD 0x15 79 80 81 /* 82 * Conversions. Rounding and limit checking is only done on the TO_REG 83 * variants. Note that you should be a bit careful with which arguments 84 * these macros are called: arguments may be evaluated more than once. 85 * Fixing this is just not worth it. 86 */ 87 88 #define RAW_FROM_REG(val) val 89 90 #define BOOL_FROM_REG(val) ((val)?0:1) 91 #define BOOL_TO_REG(val) ((val)?0:1) 92 93 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ 94 (val)-500:(val)+500)/1000)+119),0,255)) 95 #define TEMP_FROM_REG(val) (((val) - 119) * 1000) 96 97 static inline u8 FAN_TO_REG(long rpm, int div) 98 { 99 long rpmdiv; 100 if (rpm == 0) 101 return 0; 102 rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div; 103 return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255); 104 } 105 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div)))) 106 107 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) 108 #define IN_FROM_REG(val) ((val)*19) 109 110 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) 111 #define VDD_FROM_REG(val) (((val)*95+2)/4) 112 113 #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3) 114 #define DIV_FROM_REG(val) (1 << (val)) 115 116 #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) 117 #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) 118 119 /* Each client has this additional data */ 120 struct gl518_data { 121 struct i2c_client client; 122 struct class_device *class_dev; 123 enum chips type; 124 125 struct mutex update_lock; 126 char valid; /* !=0 if following fields are valid */ 127 unsigned long last_updated; /* In jiffies */ 128 129 u8 voltage_in[4]; /* Register values; [0] = VDD */ 130 u8 voltage_min[4]; /* Register values; [0] = VDD */ 131 u8 voltage_max[4]; /* Register values; [0] = VDD */ 132 u8 iter_voltage_in[4]; /* Register values; [0] = VDD */ 133 u8 fan_in[2]; 134 u8 fan_min[2]; 135 u8 fan_div[2]; /* Register encoding, shifted right */ 136 u8 fan_auto1; /* Boolean */ 137 u8 temp_in; /* Register values */ 138 u8 temp_max; /* Register values */ 139 u8 temp_hyst; /* Register values */ 140 u8 alarms; /* Register value */ 141 u8 alarm_mask; /* Register value */ 142 u8 beep_mask; /* Register value */ 143 u8 beep_enable; /* Boolean */ 144 }; 145 146 static int gl518_attach_adapter(struct i2c_adapter *adapter); 147 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); 148 static void gl518_init_client(struct i2c_client *client); 149 static int gl518_detach_client(struct i2c_client *client); 150 static int gl518_read_value(struct i2c_client *client, u8 reg); 151 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); 152 static struct gl518_data *gl518_update_device(struct device *dev); 153 154 /* This is the driver that will be inserted */ 155 static struct i2c_driver gl518_driver = { 156 .driver = { 157 .name = "gl518sm", 158 }, 159 .id = I2C_DRIVERID_GL518, 160 .attach_adapter = gl518_attach_adapter, 161 .detach_client = gl518_detach_client, 162 }; 163 164 /* 165 * Sysfs stuff 166 */ 167 168 #define show(type, suffix, value) \ 169 static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ 170 { \ 171 struct gl518_data *data = gl518_update_device(dev); \ 172 return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ 173 } 174 175 #define show_fan(suffix, value, index) \ 176 static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ 177 { \ 178 struct gl518_data *data = gl518_update_device(dev); \ 179 return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index], \ 180 DIV_FROM_REG(data->fan_div[index]))); \ 181 } 182 183 show(TEMP, temp_input1, temp_in); 184 show(TEMP, temp_max1, temp_max); 185 show(TEMP, temp_hyst1, temp_hyst); 186 show(BOOL, fan_auto1, fan_auto1); 187 show_fan(fan_input1, fan_in, 0); 188 show_fan(fan_input2, fan_in, 1); 189 show_fan(fan_min1, fan_min, 0); 190 show_fan(fan_min2, fan_min, 1); 191 show(DIV, fan_div1, fan_div[0]); 192 show(DIV, fan_div2, fan_div[1]); 193 show(VDD, in_input0, voltage_in[0]); 194 show(IN, in_input1, voltage_in[1]); 195 show(IN, in_input2, voltage_in[2]); 196 show(IN, in_input3, voltage_in[3]); 197 show(VDD, in_min0, voltage_min[0]); 198 show(IN, in_min1, voltage_min[1]); 199 show(IN, in_min2, voltage_min[2]); 200 show(IN, in_min3, voltage_min[3]); 201 show(VDD, in_max0, voltage_max[0]); 202 show(IN, in_max1, voltage_max[1]); 203 show(IN, in_max2, voltage_max[2]); 204 show(IN, in_max3, voltage_max[3]); 205 show(RAW, alarms, alarms); 206 show(BOOL, beep_enable, beep_enable); 207 show(BEEP_MASK, beep_mask, beep_mask); 208 209 #define set(type, suffix, value, reg) \ 210 static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ 211 size_t count) \ 212 { \ 213 struct i2c_client *client = to_i2c_client(dev); \ 214 struct gl518_data *data = i2c_get_clientdata(client); \ 215 long val = simple_strtol(buf, NULL, 10); \ 216 \ 217 mutex_lock(&data->update_lock); \ 218 data->value = type##_TO_REG(val); \ 219 gl518_write_value(client, reg, data->value); \ 220 mutex_unlock(&data->update_lock); \ 221 return count; \ 222 } 223 224 #define set_bits(type, suffix, value, reg, mask, shift) \ 225 static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ 226 size_t count) \ 227 { \ 228 struct i2c_client *client = to_i2c_client(dev); \ 229 struct gl518_data *data = i2c_get_clientdata(client); \ 230 int regvalue; \ 231 unsigned long val = simple_strtoul(buf, NULL, 10); \ 232 \ 233 mutex_lock(&data->update_lock); \ 234 regvalue = gl518_read_value(client, reg); \ 235 data->value = type##_TO_REG(val); \ 236 regvalue = (regvalue & ~mask) | (data->value << shift); \ 237 gl518_write_value(client, reg, regvalue); \ 238 mutex_unlock(&data->update_lock); \ 239 return count; \ 240 } 241 242 #define set_low(type, suffix, value, reg) \ 243 set_bits(type, suffix, value, reg, 0x00ff, 0) 244 #define set_high(type, suffix, value, reg) \ 245 set_bits(type, suffix, value, reg, 0xff00, 8) 246 247 set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); 248 set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); 249 set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); 250 set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6); 251 set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4); 252 set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); 253 set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); 254 set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); 255 set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); 256 set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); 257 set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); 258 set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); 259 set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); 260 set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); 261 set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); 262 263 static ssize_t set_fan_min1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 264 { 265 struct i2c_client *client = to_i2c_client(dev); 266 struct gl518_data *data = i2c_get_clientdata(client); 267 int regvalue; 268 unsigned long val = simple_strtoul(buf, NULL, 10); 269 270 mutex_lock(&data->update_lock); 271 regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); 272 data->fan_min[0] = FAN_TO_REG(val, 273 DIV_FROM_REG(data->fan_div[0])); 274 regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8); 275 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); 276 277 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 278 if (data->fan_min[0] == 0) 279 data->alarm_mask &= ~0x20; 280 else 281 data->alarm_mask |= 0x20; 282 data->beep_mask &= data->alarm_mask; 283 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); 284 285 mutex_unlock(&data->update_lock); 286 return count; 287 } 288 289 static ssize_t set_fan_min2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 290 { 291 struct i2c_client *client = to_i2c_client(dev); 292 struct gl518_data *data = i2c_get_clientdata(client); 293 int regvalue; 294 unsigned long val = simple_strtoul(buf, NULL, 10); 295 296 mutex_lock(&data->update_lock); 297 regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); 298 data->fan_min[1] = FAN_TO_REG(val, 299 DIV_FROM_REG(data->fan_div[1])); 300 regvalue = (regvalue & 0xff00) | data->fan_min[1]; 301 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); 302 303 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 304 if (data->fan_min[1] == 0) 305 data->alarm_mask &= ~0x40; 306 else 307 data->alarm_mask |= 0x40; 308 data->beep_mask &= data->alarm_mask; 309 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); 310 311 mutex_unlock(&data->update_lock); 312 return count; 313 } 314 315 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); 316 static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); 317 static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, 318 show_temp_hyst1, set_temp_hyst1); 319 static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); 320 static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL); 321 static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL); 322 static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1); 323 static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2); 324 static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1); 325 static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2); 326 static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); 327 static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); 328 static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); 329 static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); 330 static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); 331 static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); 332 static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); 333 static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); 334 static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); 335 static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); 336 static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); 337 static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); 338 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 339 static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, 340 show_beep_enable, set_beep_enable); 341 static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, 342 show_beep_mask, set_beep_mask); 343 344 static struct attribute *gl518_attributes[] = { 345 &dev_attr_in0_input.attr, 346 &dev_attr_in1_input.attr, 347 &dev_attr_in2_input.attr, 348 &dev_attr_in3_input.attr, 349 &dev_attr_in0_min.attr, 350 &dev_attr_in1_min.attr, 351 &dev_attr_in2_min.attr, 352 &dev_attr_in3_min.attr, 353 &dev_attr_in0_max.attr, 354 &dev_attr_in1_max.attr, 355 &dev_attr_in2_max.attr, 356 &dev_attr_in3_max.attr, 357 358 &dev_attr_fan1_auto.attr, 359 &dev_attr_fan1_input.attr, 360 &dev_attr_fan2_input.attr, 361 &dev_attr_fan1_min.attr, 362 &dev_attr_fan2_min.attr, 363 &dev_attr_fan1_div.attr, 364 &dev_attr_fan2_div.attr, 365 366 &dev_attr_temp1_input.attr, 367 &dev_attr_temp1_max.attr, 368 &dev_attr_temp1_max_hyst.attr, 369 370 &dev_attr_alarms.attr, 371 &dev_attr_beep_enable.attr, 372 &dev_attr_beep_mask.attr, 373 NULL 374 }; 375 376 static const struct attribute_group gl518_group = { 377 .attrs = gl518_attributes, 378 }; 379 380 /* 381 * Real code 382 */ 383 384 static int gl518_attach_adapter(struct i2c_adapter *adapter) 385 { 386 if (!(adapter->class & I2C_CLASS_HWMON)) 387 return 0; 388 return i2c_probe(adapter, &addr_data, gl518_detect); 389 } 390 391 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) 392 { 393 int i; 394 struct i2c_client *new_client; 395 struct gl518_data *data; 396 int err = 0; 397 398 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | 399 I2C_FUNC_SMBUS_WORD_DATA)) 400 goto exit; 401 402 /* OK. For now, we presume we have a valid client. We now create the 403 client structure, even though we cannot fill it completely yet. 404 But it allows us to access gl518_{read,write}_value. */ 405 406 if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) { 407 err = -ENOMEM; 408 goto exit; 409 } 410 411 new_client = &data->client; 412 i2c_set_clientdata(new_client, data); 413 414 new_client->addr = address; 415 new_client->adapter = adapter; 416 new_client->driver = &gl518_driver; 417 new_client->flags = 0; 418 419 /* Now, we do the remaining detection. */ 420 421 if (kind < 0) { 422 if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80) 423 || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80)) 424 goto exit_free; 425 } 426 427 /* Determine the chip type. */ 428 if (kind <= 0) { 429 i = gl518_read_value(new_client, GL518_REG_REVISION); 430 if (i == 0x00) { 431 kind = gl518sm_r00; 432 } else if (i == 0x80) { 433 kind = gl518sm_r80; 434 } else { 435 if (kind <= 0) 436 dev_info(&adapter->dev, 437 "Ignoring 'force' parameter for unknown " 438 "chip at adapter %d, address 0x%02x\n", 439 i2c_adapter_id(adapter), address); 440 goto exit_free; 441 } 442 } 443 444 /* Fill in the remaining client fields */ 445 strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE); 446 data->type = kind; 447 data->valid = 0; 448 mutex_init(&data->update_lock); 449 450 /* Tell the I2C layer a new client has arrived */ 451 if ((err = i2c_attach_client(new_client))) 452 goto exit_free; 453 454 /* Initialize the GL518SM chip */ 455 data->alarm_mask = 0xff; 456 data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0; 457 gl518_init_client((struct i2c_client *) new_client); 458 459 /* Register sysfs hooks */ 460 if ((err = sysfs_create_group(&new_client->dev.kobj, &gl518_group))) 461 goto exit_detach; 462 463 data->class_dev = hwmon_device_register(&new_client->dev); 464 if (IS_ERR(data->class_dev)) { 465 err = PTR_ERR(data->class_dev); 466 goto exit_remove_files; 467 } 468 469 return 0; 470 471 exit_remove_files: 472 sysfs_remove_group(&new_client->dev.kobj, &gl518_group); 473 exit_detach: 474 i2c_detach_client(new_client); 475 exit_free: 476 kfree(data); 477 exit: 478 return err; 479 } 480 481 482 /* Called when we have found a new GL518SM. 483 Note that we preserve D4:NoFan2 and D2:beep_enable. */ 484 static void gl518_init_client(struct i2c_client *client) 485 { 486 /* Make sure we leave D7:Reset untouched */ 487 u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; 488 489 /* Comparator mode (D3=0), standby mode (D6=0) */ 490 gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); 491 492 /* Never interrupts */ 493 gl518_write_value(client, GL518_REG_MASK, 0x00); 494 495 /* Clear status register (D5=1), start (D6=1) */ 496 gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); 497 gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); 498 } 499 500 static int gl518_detach_client(struct i2c_client *client) 501 { 502 struct gl518_data *data = i2c_get_clientdata(client); 503 int err; 504 505 hwmon_device_unregister(data->class_dev); 506 sysfs_remove_group(&client->dev.kobj, &gl518_group); 507 508 if ((err = i2c_detach_client(client))) 509 return err; 510 511 kfree(data); 512 return 0; 513 } 514 515 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized 516 GL518 uses a high-byte first convention, which is exactly opposite to 517 the usual practice. */ 518 static int gl518_read_value(struct i2c_client *client, u8 reg) 519 { 520 if ((reg >= 0x07) && (reg <= 0x0c)) 521 return swab16(i2c_smbus_read_word_data(client, reg)); 522 else 523 return i2c_smbus_read_byte_data(client, reg); 524 } 525 526 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized 527 GL518 uses a high-byte first convention, which is exactly opposite to 528 the usual practice. */ 529 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) 530 { 531 if ((reg >= 0x07) && (reg <= 0x0c)) 532 return i2c_smbus_write_word_data(client, reg, swab16(value)); 533 else 534 return i2c_smbus_write_byte_data(client, reg, value); 535 } 536 537 static struct gl518_data *gl518_update_device(struct device *dev) 538 { 539 struct i2c_client *client = to_i2c_client(dev); 540 struct gl518_data *data = i2c_get_clientdata(client); 541 int val; 542 543 mutex_lock(&data->update_lock); 544 545 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 546 || !data->valid) { 547 dev_dbg(&client->dev, "Starting gl518 update\n"); 548 549 data->alarms = gl518_read_value(client, GL518_REG_INT); 550 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 551 552 val = gl518_read_value(client, GL518_REG_VDD_LIMIT); 553 data->voltage_min[0] = val & 0xff; 554 data->voltage_max[0] = (val >> 8) & 0xff; 555 val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); 556 data->voltage_min[1] = val & 0xff; 557 data->voltage_max[1] = (val >> 8) & 0xff; 558 val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); 559 data->voltage_min[2] = val & 0xff; 560 data->voltage_max[2] = (val >> 8) & 0xff; 561 val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); 562 data->voltage_min[3] = val & 0xff; 563 data->voltage_max[3] = (val >> 8) & 0xff; 564 565 val = gl518_read_value(client, GL518_REG_FAN_COUNT); 566 data->fan_in[0] = (val >> 8) & 0xff; 567 data->fan_in[1] = val & 0xff; 568 569 val = gl518_read_value(client, GL518_REG_FAN_LIMIT); 570 data->fan_min[0] = (val >> 8) & 0xff; 571 data->fan_min[1] = val & 0xff; 572 573 data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); 574 data->temp_max = 575 gl518_read_value(client, GL518_REG_TEMP_MAX); 576 data->temp_hyst = 577 gl518_read_value(client, GL518_REG_TEMP_HYST); 578 579 val = gl518_read_value(client, GL518_REG_MISC); 580 data->fan_div[0] = (val >> 6) & 0x03; 581 data->fan_div[1] = (val >> 4) & 0x03; 582 data->fan_auto1 = (val >> 3) & 0x01; 583 584 data->alarms &= data->alarm_mask; 585 586 val = gl518_read_value(client, GL518_REG_CONF); 587 data->beep_enable = (val >> 2) & 1; 588 589 if (data->type != gl518sm_r00) { 590 data->voltage_in[0] = 591 gl518_read_value(client, GL518_REG_VDD); 592 data->voltage_in[1] = 593 gl518_read_value(client, GL518_REG_VIN1); 594 data->voltage_in[2] = 595 gl518_read_value(client, GL518_REG_VIN2); 596 } 597 data->voltage_in[3] = 598 gl518_read_value(client, GL518_REG_VIN3); 599 600 data->last_updated = jiffies; 601 data->valid = 1; 602 } 603 604 mutex_unlock(&data->update_lock); 605 606 return data; 607 } 608 609 static int __init sensors_gl518sm_init(void) 610 { 611 return i2c_add_driver(&gl518_driver); 612 } 613 614 static void __exit sensors_gl518sm_exit(void) 615 { 616 i2c_del_driver(&gl518_driver); 617 } 618 619 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " 620 "Kyosti Malkki <kmalkki@cc.hut.fi> and " 621 "Hong-Gunn Chew <hglinux@gunnet.org>"); 622 MODULE_DESCRIPTION("GL518SM driver"); 623 MODULE_LICENSE("GPL"); 624 625 module_init(sensors_gl518sm_init); 626 module_exit(sensors_gl518sm_exit); 627