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/i2c-sensor.h> 45 46 /* Addresses to scan */ 47 static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; 48 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END }; 49 50 /* Insmod parameters */ 51 SENSORS_INSMOD_2(gl518sm_r00, gl518sm_r80); 52 53 /* Many GL518 constants specified below */ 54 55 /* The GL518 registers */ 56 #define GL518_REG_CHIP_ID 0x00 57 #define GL518_REG_REVISION 0x01 58 #define GL518_REG_VENDOR_ID 0x02 59 #define GL518_REG_CONF 0x03 60 #define GL518_REG_TEMP_IN 0x04 61 #define GL518_REG_TEMP_MAX 0x05 62 #define GL518_REG_TEMP_HYST 0x06 63 #define GL518_REG_FAN_COUNT 0x07 64 #define GL518_REG_FAN_LIMIT 0x08 65 #define GL518_REG_VIN1_LIMIT 0x09 66 #define GL518_REG_VIN2_LIMIT 0x0a 67 #define GL518_REG_VIN3_LIMIT 0x0b 68 #define GL518_REG_VDD_LIMIT 0x0c 69 #define GL518_REG_VIN3 0x0d 70 #define GL518_REG_MISC 0x0f 71 #define GL518_REG_ALARM 0x10 72 #define GL518_REG_MASK 0x11 73 #define GL518_REG_INT 0x12 74 #define GL518_REG_VIN2 0x13 75 #define GL518_REG_VIN1 0x14 76 #define GL518_REG_VDD 0x15 77 78 79 /* 80 * Conversions. Rounding and limit checking is only done on the TO_REG 81 * variants. Note that you should be a bit careful with which arguments 82 * these macros are called: arguments may be evaluated more than once. 83 * Fixing this is just not worth it. 84 */ 85 86 #define RAW_FROM_REG(val) val 87 88 #define BOOL_FROM_REG(val) ((val)?0:1) 89 #define BOOL_TO_REG(val) ((val)?0:1) 90 91 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ 92 (val)-500:(val)+500)/1000)+119),0,255)) 93 #define TEMP_FROM_REG(val) (((val) - 119) * 1000) 94 95 static inline u8 FAN_TO_REG(long rpm, int div) 96 { 97 long rpmdiv; 98 if (rpm == 0) 99 return 0; 100 rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div; 101 return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255); 102 } 103 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div)))) 104 105 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) 106 #define IN_FROM_REG(val) ((val)*19) 107 108 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) 109 #define VDD_FROM_REG(val) (((val)*95+2)/4) 110 111 #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3) 112 #define DIV_FROM_REG(val) (1 << (val)) 113 114 #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) 115 #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) 116 117 /* Each client has this additional data */ 118 struct gl518_data { 119 struct i2c_client client; 120 enum chips type; 121 122 struct semaphore update_lock; 123 char valid; /* !=0 if following fields are valid */ 124 unsigned long last_updated; /* In jiffies */ 125 126 u8 voltage_in[4]; /* Register values; [0] = VDD */ 127 u8 voltage_min[4]; /* Register values; [0] = VDD */ 128 u8 voltage_max[4]; /* Register values; [0] = VDD */ 129 u8 iter_voltage_in[4]; /* Register values; [0] = VDD */ 130 u8 fan_in[2]; 131 u8 fan_min[2]; 132 u8 fan_div[2]; /* Register encoding, shifted right */ 133 u8 fan_auto1; /* Boolean */ 134 u8 temp_in; /* Register values */ 135 u8 temp_max; /* Register values */ 136 u8 temp_hyst; /* Register values */ 137 u8 alarms; /* Register value */ 138 u8 alarm_mask; /* Register value */ 139 u8 beep_mask; /* Register value */ 140 u8 beep_enable; /* Boolean */ 141 }; 142 143 static int gl518_attach_adapter(struct i2c_adapter *adapter); 144 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); 145 static void gl518_init_client(struct i2c_client *client); 146 static int gl518_detach_client(struct i2c_client *client); 147 static int gl518_read_value(struct i2c_client *client, u8 reg); 148 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); 149 static struct gl518_data *gl518_update_device(struct device *dev); 150 151 /* This is the driver that will be inserted */ 152 static struct i2c_driver gl518_driver = { 153 .owner = THIS_MODULE, 154 .name = "gl518sm", 155 .id = I2C_DRIVERID_GL518, 156 .flags = I2C_DF_NOTIFY, 157 .attach_adapter = gl518_attach_adapter, 158 .detach_client = gl518_detach_client, 159 }; 160 161 /* 162 * Sysfs stuff 163 */ 164 165 #define show(type, suffix, value) \ 166 static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ 167 { \ 168 struct gl518_data *data = gl518_update_device(dev); \ 169 return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ 170 } 171 172 #define show_fan(suffix, value, index) \ 173 static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ 174 { \ 175 struct gl518_data *data = gl518_update_device(dev); \ 176 return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index], \ 177 DIV_FROM_REG(data->fan_div[index]))); \ 178 } 179 180 show(TEMP, temp_input1, temp_in); 181 show(TEMP, temp_max1, temp_max); 182 show(TEMP, temp_hyst1, temp_hyst); 183 show(BOOL, fan_auto1, fan_auto1); 184 show_fan(fan_input1, fan_in, 0); 185 show_fan(fan_input2, fan_in, 1); 186 show_fan(fan_min1, fan_min, 0); 187 show_fan(fan_min2, fan_min, 1); 188 show(DIV, fan_div1, fan_div[0]); 189 show(DIV, fan_div2, fan_div[1]); 190 show(VDD, in_input0, voltage_in[0]); 191 show(IN, in_input1, voltage_in[1]); 192 show(IN, in_input2, voltage_in[2]); 193 show(IN, in_input3, voltage_in[3]); 194 show(VDD, in_min0, voltage_min[0]); 195 show(IN, in_min1, voltage_min[1]); 196 show(IN, in_min2, voltage_min[2]); 197 show(IN, in_min3, voltage_min[3]); 198 show(VDD, in_max0, voltage_max[0]); 199 show(IN, in_max1, voltage_max[1]); 200 show(IN, in_max2, voltage_max[2]); 201 show(IN, in_max3, voltage_max[3]); 202 show(RAW, alarms, alarms); 203 show(BOOL, beep_enable, beep_enable); 204 show(BEEP_MASK, beep_mask, beep_mask); 205 206 #define set(type, suffix, value, reg) \ 207 static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ 208 size_t count) \ 209 { \ 210 struct i2c_client *client = to_i2c_client(dev); \ 211 struct gl518_data *data = i2c_get_clientdata(client); \ 212 long val = simple_strtol(buf, NULL, 10); \ 213 \ 214 down(&data->update_lock); \ 215 data->value = type##_TO_REG(val); \ 216 gl518_write_value(client, reg, data->value); \ 217 up(&data->update_lock); \ 218 return count; \ 219 } 220 221 #define set_bits(type, suffix, value, reg, mask, shift) \ 222 static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ 223 size_t count) \ 224 { \ 225 struct i2c_client *client = to_i2c_client(dev); \ 226 struct gl518_data *data = i2c_get_clientdata(client); \ 227 int regvalue; \ 228 unsigned long val = simple_strtoul(buf, NULL, 10); \ 229 \ 230 down(&data->update_lock); \ 231 regvalue = gl518_read_value(client, reg); \ 232 data->value = type##_TO_REG(val); \ 233 regvalue = (regvalue & ~mask) | (data->value << shift); \ 234 gl518_write_value(client, reg, regvalue); \ 235 up(&data->update_lock); \ 236 return count; \ 237 } 238 239 #define set_low(type, suffix, value, reg) \ 240 set_bits(type, suffix, value, reg, 0x00ff, 0) 241 #define set_high(type, suffix, value, reg) \ 242 set_bits(type, suffix, value, reg, 0xff00, 8) 243 244 set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); 245 set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); 246 set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); 247 set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6); 248 set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4); 249 set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); 250 set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); 251 set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); 252 set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); 253 set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); 254 set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); 255 set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); 256 set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); 257 set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); 258 set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); 259 260 static ssize_t set_fan_min1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 261 { 262 struct i2c_client *client = to_i2c_client(dev); 263 struct gl518_data *data = i2c_get_clientdata(client); 264 int regvalue; 265 unsigned long val = simple_strtoul(buf, NULL, 10); 266 267 down(&data->update_lock); 268 regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); 269 data->fan_min[0] = FAN_TO_REG(val, 270 DIV_FROM_REG(data->fan_div[0])); 271 regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8); 272 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); 273 274 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 275 if (data->fan_min[0] == 0) 276 data->alarm_mask &= ~0x20; 277 else 278 data->alarm_mask |= 0x20; 279 data->beep_mask &= data->alarm_mask; 280 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); 281 282 up(&data->update_lock); 283 return count; 284 } 285 286 static ssize_t set_fan_min2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 287 { 288 struct i2c_client *client = to_i2c_client(dev); 289 struct gl518_data *data = i2c_get_clientdata(client); 290 int regvalue; 291 unsigned long val = simple_strtoul(buf, NULL, 10); 292 293 down(&data->update_lock); 294 regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); 295 data->fan_min[1] = FAN_TO_REG(val, 296 DIV_FROM_REG(data->fan_div[1])); 297 regvalue = (regvalue & 0xff00) | data->fan_min[1]; 298 gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); 299 300 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 301 if (data->fan_min[1] == 0) 302 data->alarm_mask &= ~0x40; 303 else 304 data->alarm_mask |= 0x40; 305 data->beep_mask &= data->alarm_mask; 306 gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); 307 308 up(&data->update_lock); 309 return count; 310 } 311 312 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); 313 static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); 314 static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, 315 show_temp_hyst1, set_temp_hyst1); 316 static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); 317 static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL); 318 static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL); 319 static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1); 320 static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2); 321 static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1); 322 static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2); 323 static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); 324 static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); 325 static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); 326 static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); 327 static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); 328 static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); 329 static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); 330 static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); 331 static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); 332 static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); 333 static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); 334 static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); 335 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 336 static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, 337 show_beep_enable, set_beep_enable); 338 static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, 339 show_beep_mask, set_beep_mask); 340 341 /* 342 * Real code 343 */ 344 345 static int gl518_attach_adapter(struct i2c_adapter *adapter) 346 { 347 if (!(adapter->class & I2C_CLASS_HWMON)) 348 return 0; 349 return i2c_detect(adapter, &addr_data, gl518_detect); 350 } 351 352 static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) 353 { 354 int i; 355 struct i2c_client *new_client; 356 struct gl518_data *data; 357 int err = 0; 358 359 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | 360 I2C_FUNC_SMBUS_WORD_DATA)) 361 goto exit; 362 363 /* OK. For now, we presume we have a valid client. We now create the 364 client structure, even though we cannot fill it completely yet. 365 But it allows us to access gl518_{read,write}_value. */ 366 367 if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) { 368 err = -ENOMEM; 369 goto exit; 370 } 371 memset(data, 0, sizeof(struct gl518_data)); 372 373 new_client = &data->client; 374 i2c_set_clientdata(new_client, data); 375 376 new_client->addr = address; 377 new_client->adapter = adapter; 378 new_client->driver = &gl518_driver; 379 new_client->flags = 0; 380 381 /* Now, we do the remaining detection. */ 382 383 if (kind < 0) { 384 if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80) 385 || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80)) 386 goto exit_free; 387 } 388 389 /* Determine the chip type. */ 390 if (kind <= 0) { 391 i = gl518_read_value(new_client, GL518_REG_REVISION); 392 if (i == 0x00) { 393 kind = gl518sm_r00; 394 } else if (i == 0x80) { 395 kind = gl518sm_r80; 396 } else { 397 if (kind <= 0) 398 dev_info(&adapter->dev, 399 "Ignoring 'force' parameter for unknown " 400 "chip at adapter %d, address 0x%02x\n", 401 i2c_adapter_id(adapter), address); 402 goto exit_free; 403 } 404 } 405 406 /* Fill in the remaining client fields */ 407 strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE); 408 data->type = kind; 409 data->valid = 0; 410 init_MUTEX(&data->update_lock); 411 412 /* Tell the I2C layer a new client has arrived */ 413 if ((err = i2c_attach_client(new_client))) 414 goto exit_free; 415 416 /* Initialize the GL518SM chip */ 417 data->alarm_mask = 0xff; 418 data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0; 419 gl518_init_client((struct i2c_client *) new_client); 420 421 /* Register sysfs hooks */ 422 device_create_file(&new_client->dev, &dev_attr_in0_input); 423 device_create_file(&new_client->dev, &dev_attr_in1_input); 424 device_create_file(&new_client->dev, &dev_attr_in2_input); 425 device_create_file(&new_client->dev, &dev_attr_in3_input); 426 device_create_file(&new_client->dev, &dev_attr_in0_min); 427 device_create_file(&new_client->dev, &dev_attr_in1_min); 428 device_create_file(&new_client->dev, &dev_attr_in2_min); 429 device_create_file(&new_client->dev, &dev_attr_in3_min); 430 device_create_file(&new_client->dev, &dev_attr_in0_max); 431 device_create_file(&new_client->dev, &dev_attr_in1_max); 432 device_create_file(&new_client->dev, &dev_attr_in2_max); 433 device_create_file(&new_client->dev, &dev_attr_in3_max); 434 device_create_file(&new_client->dev, &dev_attr_fan1_auto); 435 device_create_file(&new_client->dev, &dev_attr_fan1_input); 436 device_create_file(&new_client->dev, &dev_attr_fan2_input); 437 device_create_file(&new_client->dev, &dev_attr_fan1_min); 438 device_create_file(&new_client->dev, &dev_attr_fan2_min); 439 device_create_file(&new_client->dev, &dev_attr_fan1_div); 440 device_create_file(&new_client->dev, &dev_attr_fan2_div); 441 device_create_file(&new_client->dev, &dev_attr_temp1_input); 442 device_create_file(&new_client->dev, &dev_attr_temp1_max); 443 device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); 444 device_create_file(&new_client->dev, &dev_attr_alarms); 445 device_create_file(&new_client->dev, &dev_attr_beep_enable); 446 device_create_file(&new_client->dev, &dev_attr_beep_mask); 447 448 return 0; 449 450 /* OK, this is not exactly good programming practice, usually. But it is 451 very code-efficient in this case. */ 452 453 exit_free: 454 kfree(data); 455 exit: 456 return err; 457 } 458 459 460 /* Called when we have found a new GL518SM. 461 Note that we preserve D4:NoFan2 and D2:beep_enable. */ 462 static void gl518_init_client(struct i2c_client *client) 463 { 464 /* Make sure we leave D7:Reset untouched */ 465 u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; 466 467 /* Comparator mode (D3=0), standby mode (D6=0) */ 468 gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); 469 470 /* Never interrupts */ 471 gl518_write_value(client, GL518_REG_MASK, 0x00); 472 473 /* Clear status register (D5=1), start (D6=1) */ 474 gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); 475 gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); 476 } 477 478 static int gl518_detach_client(struct i2c_client *client) 479 { 480 int err; 481 482 if ((err = i2c_detach_client(client))) { 483 dev_err(&client->dev, "Client deregistration failed, " 484 "client not detached.\n"); 485 return err; 486 } 487 488 kfree(i2c_get_clientdata(client)); 489 490 return 0; 491 } 492 493 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized 494 GL518 uses a high-byte first convention, which is exactly opposite to 495 the usual practice. */ 496 static int gl518_read_value(struct i2c_client *client, u8 reg) 497 { 498 if ((reg >= 0x07) && (reg <= 0x0c)) 499 return swab16(i2c_smbus_read_word_data(client, reg)); 500 else 501 return i2c_smbus_read_byte_data(client, reg); 502 } 503 504 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized 505 GL518 uses a high-byte first convention, which is exactly opposite to 506 the usual practice. */ 507 static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) 508 { 509 if ((reg >= 0x07) && (reg <= 0x0c)) 510 return i2c_smbus_write_word_data(client, reg, swab16(value)); 511 else 512 return i2c_smbus_write_byte_data(client, reg, value); 513 } 514 515 static struct gl518_data *gl518_update_device(struct device *dev) 516 { 517 struct i2c_client *client = to_i2c_client(dev); 518 struct gl518_data *data = i2c_get_clientdata(client); 519 int val; 520 521 down(&data->update_lock); 522 523 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 524 || !data->valid) { 525 dev_dbg(&client->dev, "Starting gl518 update\n"); 526 527 data->alarms = gl518_read_value(client, GL518_REG_INT); 528 data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); 529 530 val = gl518_read_value(client, GL518_REG_VDD_LIMIT); 531 data->voltage_min[0] = val & 0xff; 532 data->voltage_max[0] = (val >> 8) & 0xff; 533 val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); 534 data->voltage_min[1] = val & 0xff; 535 data->voltage_max[1] = (val >> 8) & 0xff; 536 val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); 537 data->voltage_min[2] = val & 0xff; 538 data->voltage_max[2] = (val >> 8) & 0xff; 539 val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); 540 data->voltage_min[3] = val & 0xff; 541 data->voltage_max[3] = (val >> 8) & 0xff; 542 543 val = gl518_read_value(client, GL518_REG_FAN_COUNT); 544 data->fan_in[0] = (val >> 8) & 0xff; 545 data->fan_in[1] = val & 0xff; 546 547 val = gl518_read_value(client, GL518_REG_FAN_LIMIT); 548 data->fan_min[0] = (val >> 8) & 0xff; 549 data->fan_min[1] = val & 0xff; 550 551 data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); 552 data->temp_max = 553 gl518_read_value(client, GL518_REG_TEMP_MAX); 554 data->temp_hyst = 555 gl518_read_value(client, GL518_REG_TEMP_HYST); 556 557 val = gl518_read_value(client, GL518_REG_MISC); 558 data->fan_div[0] = (val >> 6) & 0x03; 559 data->fan_div[1] = (val >> 4) & 0x03; 560 data->fan_auto1 = (val >> 3) & 0x01; 561 562 data->alarms &= data->alarm_mask; 563 564 val = gl518_read_value(client, GL518_REG_CONF); 565 data->beep_enable = (val >> 2) & 1; 566 567 if (data->type != gl518sm_r00) { 568 data->voltage_in[0] = 569 gl518_read_value(client, GL518_REG_VDD); 570 data->voltage_in[1] = 571 gl518_read_value(client, GL518_REG_VIN1); 572 data->voltage_in[2] = 573 gl518_read_value(client, GL518_REG_VIN2); 574 } 575 data->voltage_in[3] = 576 gl518_read_value(client, GL518_REG_VIN3); 577 578 data->last_updated = jiffies; 579 data->valid = 1; 580 } 581 582 up(&data->update_lock); 583 584 return data; 585 } 586 587 static int __init sensors_gl518sm_init(void) 588 { 589 return i2c_add_driver(&gl518_driver); 590 } 591 592 static void __exit sensors_gl518sm_exit(void) 593 { 594 i2c_del_driver(&gl518_driver); 595 } 596 597 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " 598 "Kyosti Malkki <kmalkki@cc.hut.fi> and " 599 "Hong-Gunn Chew <hglinux@gunnet.org>"); 600 MODULE_DESCRIPTION("GL518SM driver"); 601 MODULE_LICENSE("GPL"); 602 603 module_init(sensors_gl518sm_init); 604 module_exit(sensors_gl518sm_exit); 605