Charles Spirakis | 9873964 | 2006-04-25 14:21:03 +0200 | [diff] [blame] | 1 | /* |
| 2 | w83791d.c - Part of lm_sensors, Linux kernel modules for hardware |
| 3 | monitoring |
| 4 | |
| 5 | Copyright (C) 2006 Charles Spirakis <bezaur@gmail.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | Supports following chips: |
| 24 | |
| 25 | Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA |
| 26 | w83791d 10 5 3 3 0x71 0x5ca3 yes no |
| 27 | |
| 28 | The w83791d chip appears to be part way between the 83781d and the |
| 29 | 83792d. Thus, this file is derived from both the w83792d.c and |
Charles Spirakis | 125751c | 2006-09-24 20:53:04 +0200 | [diff] [blame^] | 30 | w83781d.c files. |
| 31 | |
| 32 | The w83791g chip is the same as the w83791d but lead-free. |
Charles Spirakis | 9873964 | 2006-04-25 14:21:03 +0200 | [diff] [blame] | 33 | */ |
| 34 | |
| 35 | #include <linux/config.h> |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/slab.h> |
| 39 | #include <linux/i2c.h> |
| 40 | #include <linux/hwmon.h> |
| 41 | #include <linux/hwmon-vid.h> |
| 42 | #include <linux/hwmon-sysfs.h> |
| 43 | #include <linux/err.h> |
| 44 | #include <linux/mutex.h> |
| 45 | |
| 46 | #define NUMBER_OF_VIN 10 |
| 47 | #define NUMBER_OF_FANIN 5 |
| 48 | #define NUMBER_OF_TEMPIN 3 |
| 49 | |
| 50 | /* Addresses to scan */ |
| 51 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; |
| 52 | |
| 53 | /* Insmod parameters */ |
| 54 | I2C_CLIENT_INSMOD_1(w83791d); |
| 55 | I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: " |
| 56 | "{bus, clientaddr, subclientaddr1, subclientaddr2}"); |
| 57 | |
| 58 | static int reset; |
| 59 | module_param(reset, bool, 0); |
| 60 | MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset"); |
| 61 | |
| 62 | static int init; |
| 63 | module_param(init, bool, 0); |
| 64 | MODULE_PARM_DESC(init, "Set to one to force extra software initialization"); |
| 65 | |
| 66 | /* The W83791D registers */ |
| 67 | static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = { |
| 68 | 0x20, /* VCOREA in DataSheet */ |
| 69 | 0x21, /* VINR0 in DataSheet */ |
| 70 | 0x22, /* +3.3VIN in DataSheet */ |
| 71 | 0x23, /* VDD5V in DataSheet */ |
| 72 | 0x24, /* +12VIN in DataSheet */ |
| 73 | 0x25, /* -12VIN in DataSheet */ |
| 74 | 0x26, /* -5VIN in DataSheet */ |
| 75 | 0xB0, /* 5VSB in DataSheet */ |
| 76 | 0xB1, /* VBAT in DataSheet */ |
| 77 | 0xB2 /* VINR1 in DataSheet */ |
| 78 | }; |
| 79 | |
| 80 | static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = { |
| 81 | 0x2B, /* VCOREA High Limit in DataSheet */ |
| 82 | 0x2D, /* VINR0 High Limit in DataSheet */ |
| 83 | 0x2F, /* +3.3VIN High Limit in DataSheet */ |
| 84 | 0x31, /* VDD5V High Limit in DataSheet */ |
| 85 | 0x33, /* +12VIN High Limit in DataSheet */ |
| 86 | 0x35, /* -12VIN High Limit in DataSheet */ |
| 87 | 0x37, /* -5VIN High Limit in DataSheet */ |
| 88 | 0xB4, /* 5VSB High Limit in DataSheet */ |
| 89 | 0xB6, /* VBAT High Limit in DataSheet */ |
| 90 | 0xB8 /* VINR1 High Limit in DataSheet */ |
| 91 | }; |
| 92 | static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = { |
| 93 | 0x2C, /* VCOREA Low Limit in DataSheet */ |
| 94 | 0x2E, /* VINR0 Low Limit in DataSheet */ |
| 95 | 0x30, /* +3.3VIN Low Limit in DataSheet */ |
| 96 | 0x32, /* VDD5V Low Limit in DataSheet */ |
| 97 | 0x34, /* +12VIN Low Limit in DataSheet */ |
| 98 | 0x36, /* -12VIN Low Limit in DataSheet */ |
| 99 | 0x38, /* -5VIN Low Limit in DataSheet */ |
| 100 | 0xB5, /* 5VSB Low Limit in DataSheet */ |
| 101 | 0xB7, /* VBAT Low Limit in DataSheet */ |
| 102 | 0xB9 /* VINR1 Low Limit in DataSheet */ |
| 103 | }; |
| 104 | static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = { |
| 105 | 0x28, /* FAN 1 Count in DataSheet */ |
| 106 | 0x29, /* FAN 2 Count in DataSheet */ |
| 107 | 0x2A, /* FAN 3 Count in DataSheet */ |
| 108 | 0xBA, /* FAN 4 Count in DataSheet */ |
| 109 | 0xBB, /* FAN 5 Count in DataSheet */ |
| 110 | }; |
| 111 | static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = { |
| 112 | 0x3B, /* FAN 1 Count Low Limit in DataSheet */ |
| 113 | 0x3C, /* FAN 2 Count Low Limit in DataSheet */ |
| 114 | 0x3D, /* FAN 3 Count Low Limit in DataSheet */ |
| 115 | 0xBC, /* FAN 4 Count Low Limit in DataSheet */ |
| 116 | 0xBD, /* FAN 5 Count Low Limit in DataSheet */ |
| 117 | }; |
| 118 | |
| 119 | static const u8 W83791D_REG_FAN_CFG[2] = { |
| 120 | 0x84, /* FAN 1/2 configuration */ |
| 121 | 0x95, /* FAN 3 configuration */ |
| 122 | }; |
| 123 | |
| 124 | static const u8 W83791D_REG_FAN_DIV[3] = { |
| 125 | 0x47, /* contains FAN1 and FAN2 Divisor */ |
| 126 | 0x4b, /* contains FAN3 Divisor */ |
| 127 | 0x5C, /* contains FAN4 and FAN5 Divisor */ |
| 128 | }; |
| 129 | |
| 130 | #define W83791D_REG_BANK 0x4E |
| 131 | #define W83791D_REG_TEMP2_CONFIG 0xC2 |
| 132 | #define W83791D_REG_TEMP3_CONFIG 0xCA |
| 133 | |
| 134 | static const u8 W83791D_REG_TEMP1[3] = { |
| 135 | 0x27, /* TEMP 1 in DataSheet */ |
| 136 | 0x39, /* TEMP 1 Over in DataSheet */ |
| 137 | 0x3A, /* TEMP 1 Hyst in DataSheet */ |
| 138 | }; |
| 139 | |
| 140 | static const u8 W83791D_REG_TEMP_ADD[2][6] = { |
| 141 | {0xC0, /* TEMP 2 in DataSheet */ |
| 142 | 0xC1, /* TEMP 2(0.5 deg) in DataSheet */ |
| 143 | 0xC5, /* TEMP 2 Over High part in DataSheet */ |
| 144 | 0xC6, /* TEMP 2 Over Low part in DataSheet */ |
| 145 | 0xC3, /* TEMP 2 Thyst High part in DataSheet */ |
| 146 | 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */ |
| 147 | {0xC8, /* TEMP 3 in DataSheet */ |
| 148 | 0xC9, /* TEMP 3(0.5 deg) in DataSheet */ |
| 149 | 0xCD, /* TEMP 3 Over High part in DataSheet */ |
| 150 | 0xCE, /* TEMP 3 Over Low part in DataSheet */ |
| 151 | 0xCB, /* TEMP 3 Thyst High part in DataSheet */ |
| 152 | 0xCC} /* TEMP 3 Thyst Low part in DataSheet */ |
| 153 | }; |
| 154 | |
| 155 | #define W83791D_REG_BEEP_CONFIG 0x4D |
| 156 | |
| 157 | static const u8 W83791D_REG_BEEP_CTRL[3] = { |
| 158 | 0x56, /* BEEP Control Register 1 */ |
| 159 | 0x57, /* BEEP Control Register 2 */ |
| 160 | 0xA3, /* BEEP Control Register 3 */ |
| 161 | }; |
| 162 | |
| 163 | #define W83791D_REG_CONFIG 0x40 |
| 164 | #define W83791D_REG_VID_FANDIV 0x47 |
| 165 | #define W83791D_REG_DID_VID4 0x49 |
| 166 | #define W83791D_REG_WCHIPID 0x58 |
| 167 | #define W83791D_REG_CHIPMAN 0x4F |
| 168 | #define W83791D_REG_PIN 0x4B |
| 169 | #define W83791D_REG_I2C_SUBADDR 0x4A |
| 170 | |
| 171 | #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */ |
| 172 | #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */ |
| 173 | #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */ |
| 174 | |
| 175 | #define W83791D_REG_VBAT 0x5D |
| 176 | #define W83791D_REG_I2C_ADDR 0x48 |
| 177 | |
| 178 | /* The SMBus locks itself. The Winbond W83791D has a bank select register |
| 179 | (index 0x4e), but the driver only accesses registers in bank 0. Since |
| 180 | we don't switch banks, we don't need any special code to handle |
| 181 | locking access between bank switches */ |
| 182 | static inline int w83791d_read(struct i2c_client *client, u8 reg) |
| 183 | { |
| 184 | return i2c_smbus_read_byte_data(client, reg); |
| 185 | } |
| 186 | |
| 187 | static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value) |
| 188 | { |
| 189 | return i2c_smbus_write_byte_data(client, reg, value); |
| 190 | } |
| 191 | |
| 192 | /* The analog voltage inputs have 16mV LSB. Since the sysfs output is |
| 193 | in mV as would be measured on the chip input pin, need to just |
| 194 | multiply/divide by 16 to translate from/to register values. */ |
| 195 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8) / 16), 0, 255)) |
| 196 | #define IN_FROM_REG(val) ((val) * 16) |
| 197 | |
| 198 | static u8 fan_to_reg(long rpm, int div) |
| 199 | { |
| 200 | if (rpm == 0) |
| 201 | return 255; |
| 202 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); |
| 203 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
| 204 | } |
| 205 | |
| 206 | #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \ |
| 207 | ((val) == 255 ? 0 : \ |
| 208 | 1350000 / ((val) * (div)))) |
| 209 | |
| 210 | /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */ |
| 211 | #define TEMP1_FROM_REG(val) ((val) * 1000) |
| 212 | #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \ |
| 213 | (val) >= 127000 ? 127 : \ |
| 214 | (val) < 0 ? ((val) - 500) / 1000 : \ |
| 215 | ((val) + 500) / 1000) |
| 216 | |
| 217 | /* for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius |
| 218 | Assumes the top 8 bits are the integral amount and the bottom 8 bits |
| 219 | are the fractional amount. Since we only have 0.5 degree resolution, |
| 220 | the bottom 7 bits will always be zero */ |
| 221 | #define TEMP23_FROM_REG(val) ((val) / 128 * 500) |
| 222 | #define TEMP23_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ |
| 223 | (val) >= 127500 ? 0x7F80 : \ |
| 224 | (val) < 0 ? ((val) - 250) / 500 * 128 : \ |
| 225 | ((val) + 250) / 500 * 128) |
| 226 | |
| 227 | |
| 228 | #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff) |
| 229 | #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff) |
| 230 | |
| 231 | #define DIV_FROM_REG(val) (1 << (val)) |
| 232 | |
| 233 | static u8 div_to_reg(int nr, long val) |
| 234 | { |
| 235 | int i; |
| 236 | int max; |
| 237 | |
| 238 | /* first three fan's divisor max out at 8, rest max out at 128 */ |
| 239 | max = (nr < 3) ? 8 : 128; |
| 240 | val = SENSORS_LIMIT(val, 1, max) >> 1; |
| 241 | for (i = 0; i < 7; i++) { |
| 242 | if (val == 0) |
| 243 | break; |
| 244 | val >>= 1; |
| 245 | } |
| 246 | return (u8) i; |
| 247 | } |
| 248 | |
| 249 | struct w83791d_data { |
| 250 | struct i2c_client client; |
| 251 | struct class_device *class_dev; |
| 252 | struct mutex update_lock; |
| 253 | |
| 254 | char valid; /* !=0 if following fields are valid */ |
| 255 | unsigned long last_updated; /* In jiffies */ |
| 256 | |
| 257 | /* array of 2 pointers to subclients */ |
| 258 | struct i2c_client *lm75[2]; |
| 259 | |
| 260 | /* volts */ |
| 261 | u8 in[NUMBER_OF_VIN]; /* Register value */ |
| 262 | u8 in_max[NUMBER_OF_VIN]; /* Register value */ |
| 263 | u8 in_min[NUMBER_OF_VIN]; /* Register value */ |
| 264 | |
| 265 | /* fans */ |
| 266 | u8 fan[NUMBER_OF_FANIN]; /* Register value */ |
| 267 | u8 fan_min[NUMBER_OF_FANIN]; /* Register value */ |
| 268 | u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */ |
| 269 | |
| 270 | /* Temperature sensors */ |
| 271 | |
| 272 | s8 temp1[3]; /* current, over, thyst */ |
| 273 | s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the |
| 274 | integral part, bottom 8 bits are the |
| 275 | fractional part. We only use the top |
| 276 | 9 bits as the resolution is only |
| 277 | to the 0.5 degree C... |
| 278 | two sensors with three values |
| 279 | (cur, over, hyst) */ |
| 280 | |
| 281 | /* Misc */ |
| 282 | u32 alarms; /* realtime status register encoding,combined */ |
| 283 | u8 beep_enable; /* Global beep enable */ |
| 284 | u32 beep_mask; /* Mask off specific beeps */ |
| 285 | u8 vid; /* Register encoding, combined */ |
| 286 | u8 vrm; /* hwmon-vid */ |
| 287 | }; |
| 288 | |
| 289 | static int w83791d_attach_adapter(struct i2c_adapter *adapter); |
| 290 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind); |
| 291 | static int w83791d_detach_client(struct i2c_client *client); |
| 292 | |
| 293 | static int w83791d_read(struct i2c_client *client, u8 register); |
| 294 | static int w83791d_write(struct i2c_client *client, u8 register, u8 value); |
| 295 | static struct w83791d_data *w83791d_update_device(struct device *dev); |
| 296 | |
| 297 | #ifdef DEBUG |
| 298 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev); |
| 299 | #endif |
| 300 | |
| 301 | static void w83791d_init_client(struct i2c_client *client); |
| 302 | |
| 303 | static struct i2c_driver w83791d_driver = { |
| 304 | .driver = { |
| 305 | .name = "w83791d", |
| 306 | }, |
| 307 | .attach_adapter = w83791d_attach_adapter, |
| 308 | .detach_client = w83791d_detach_client, |
| 309 | }; |
| 310 | |
| 311 | /* following are the sysfs callback functions */ |
| 312 | #define show_in_reg(reg) \ |
| 313 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ |
| 314 | char *buf) \ |
| 315 | { \ |
| 316 | struct sensor_device_attribute *sensor_attr = \ |
| 317 | to_sensor_dev_attr(attr); \ |
| 318 | struct w83791d_data *data = w83791d_update_device(dev); \ |
| 319 | int nr = sensor_attr->index; \ |
| 320 | return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \ |
| 321 | } |
| 322 | |
| 323 | show_in_reg(in); |
| 324 | show_in_reg(in_min); |
| 325 | show_in_reg(in_max); |
| 326 | |
| 327 | #define store_in_reg(REG, reg) \ |
| 328 | static ssize_t store_in_##reg(struct device *dev, \ |
| 329 | struct device_attribute *attr, \ |
| 330 | const char *buf, size_t count) \ |
| 331 | { \ |
| 332 | struct sensor_device_attribute *sensor_attr = \ |
| 333 | to_sensor_dev_attr(attr); \ |
| 334 | struct i2c_client *client = to_i2c_client(dev); \ |
| 335 | struct w83791d_data *data = i2c_get_clientdata(client); \ |
| 336 | unsigned long val = simple_strtoul(buf, NULL, 10); \ |
| 337 | int nr = sensor_attr->index; \ |
| 338 | \ |
| 339 | mutex_lock(&data->update_lock); \ |
| 340 | data->in_##reg[nr] = IN_TO_REG(val); \ |
| 341 | w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \ |
| 342 | mutex_unlock(&data->update_lock); \ |
| 343 | \ |
| 344 | return count; \ |
| 345 | } |
| 346 | store_in_reg(MIN, min); |
| 347 | store_in_reg(MAX, max); |
| 348 | |
| 349 | static struct sensor_device_attribute sda_in_input[] = { |
| 350 | SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), |
| 351 | SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), |
| 352 | SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), |
| 353 | SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), |
| 354 | SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), |
| 355 | SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), |
| 356 | SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), |
| 357 | SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), |
| 358 | SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), |
| 359 | SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), |
| 360 | }; |
| 361 | |
| 362 | static struct sensor_device_attribute sda_in_min[] = { |
| 363 | SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), |
| 364 | SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), |
| 365 | SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), |
| 366 | SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), |
| 367 | SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), |
| 368 | SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), |
| 369 | SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), |
| 370 | SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), |
| 371 | SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), |
| 372 | SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), |
| 373 | }; |
| 374 | |
| 375 | static struct sensor_device_attribute sda_in_max[] = { |
| 376 | SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), |
| 377 | SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), |
| 378 | SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), |
| 379 | SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), |
| 380 | SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), |
| 381 | SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), |
| 382 | SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), |
| 383 | SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), |
| 384 | SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), |
| 385 | SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), |
| 386 | }; |
| 387 | |
| 388 | #define show_fan_reg(reg) \ |
| 389 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ |
| 390 | char *buf) \ |
| 391 | { \ |
| 392 | struct sensor_device_attribute *sensor_attr = \ |
| 393 | to_sensor_dev_attr(attr); \ |
| 394 | struct w83791d_data *data = w83791d_update_device(dev); \ |
| 395 | int nr = sensor_attr->index; \ |
| 396 | return sprintf(buf,"%d\n", \ |
| 397 | FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \ |
| 398 | } |
| 399 | |
| 400 | show_fan_reg(fan); |
| 401 | show_fan_reg(fan_min); |
| 402 | |
| 403 | static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr, |
| 404 | const char *buf, size_t count) |
| 405 | { |
| 406 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| 407 | struct i2c_client *client = to_i2c_client(dev); |
| 408 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 409 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 410 | int nr = sensor_attr->index; |
| 411 | |
| 412 | mutex_lock(&data->update_lock); |
| 413 | data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr])); |
| 414 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); |
| 415 | mutex_unlock(&data->update_lock); |
| 416 | |
| 417 | return count; |
| 418 | } |
| 419 | |
| 420 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
| 421 | char *buf) |
| 422 | { |
| 423 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| 424 | int nr = sensor_attr->index; |
| 425 | struct w83791d_data *data = w83791d_update_device(dev); |
| 426 | return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr])); |
| 427 | } |
| 428 | |
| 429 | /* Note: we save and restore the fan minimum here, because its value is |
| 430 | determined in part by the fan divisor. This follows the principle of |
| 431 | least suprise; the user doesn't expect the fan minimum to change just |
| 432 | because the divisor changed. */ |
| 433 | static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr, |
| 434 | const char *buf, size_t count) |
| 435 | { |
| 436 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| 437 | struct i2c_client *client = to_i2c_client(dev); |
| 438 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 439 | int nr = sensor_attr->index; |
| 440 | unsigned long min; |
| 441 | u8 tmp_fan_div; |
| 442 | u8 fan_div_reg; |
| 443 | int indx = 0; |
| 444 | u8 keep_mask = 0; |
| 445 | u8 new_shift = 0; |
| 446 | |
| 447 | /* Save fan_min */ |
| 448 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); |
| 449 | |
| 450 | mutex_lock(&data->update_lock); |
| 451 | data->fan_div[nr] = div_to_reg(nr, simple_strtoul(buf, NULL, 10)); |
| 452 | |
| 453 | switch (nr) { |
| 454 | case 0: |
| 455 | indx = 0; |
| 456 | keep_mask = 0xcf; |
| 457 | new_shift = 4; |
| 458 | break; |
| 459 | case 1: |
| 460 | indx = 0; |
| 461 | keep_mask = 0x3f; |
| 462 | new_shift = 6; |
| 463 | break; |
| 464 | case 2: |
| 465 | indx = 1; |
| 466 | keep_mask = 0x3f; |
| 467 | new_shift = 6; |
| 468 | break; |
| 469 | case 3: |
| 470 | indx = 2; |
| 471 | keep_mask = 0xf8; |
| 472 | new_shift = 0; |
| 473 | break; |
| 474 | case 4: |
| 475 | indx = 2; |
| 476 | keep_mask = 0x8f; |
| 477 | new_shift = 4; |
| 478 | break; |
| 479 | #ifdef DEBUG |
| 480 | default: |
| 481 | dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr); |
| 482 | count = -EINVAL; |
| 483 | goto err_exit; |
| 484 | #endif |
| 485 | } |
| 486 | |
| 487 | fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx]) |
| 488 | & keep_mask; |
| 489 | tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask; |
| 490 | |
| 491 | w83791d_write(client, W83791D_REG_FAN_DIV[indx], |
| 492 | fan_div_reg | tmp_fan_div); |
| 493 | |
| 494 | /* Restore fan_min */ |
| 495 | data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr])); |
| 496 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); |
| 497 | |
| 498 | #ifdef DEBUG |
| 499 | err_exit: |
| 500 | #endif |
| 501 | mutex_unlock(&data->update_lock); |
| 502 | |
| 503 | return count; |
| 504 | } |
| 505 | |
| 506 | static struct sensor_device_attribute sda_fan_input[] = { |
| 507 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), |
| 508 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), |
| 509 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), |
| 510 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), |
| 511 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), |
| 512 | }; |
| 513 | |
| 514 | static struct sensor_device_attribute sda_fan_min[] = { |
| 515 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, |
| 516 | show_fan_min, store_fan_min, 0), |
| 517 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, |
| 518 | show_fan_min, store_fan_min, 1), |
| 519 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, |
| 520 | show_fan_min, store_fan_min, 2), |
| 521 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, |
| 522 | show_fan_min, store_fan_min, 3), |
| 523 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, |
| 524 | show_fan_min, store_fan_min, 4), |
| 525 | }; |
| 526 | |
| 527 | static struct sensor_device_attribute sda_fan_div[] = { |
| 528 | SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO, |
| 529 | show_fan_div, store_fan_div, 0), |
| 530 | SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO, |
| 531 | show_fan_div, store_fan_div, 1), |
| 532 | SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO, |
| 533 | show_fan_div, store_fan_div, 2), |
| 534 | SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO, |
| 535 | show_fan_div, store_fan_div, 3), |
| 536 | SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO, |
| 537 | show_fan_div, store_fan_div, 4), |
| 538 | }; |
| 539 | |
| 540 | /* read/write the temperature1, includes measured value and limits */ |
| 541 | static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr, |
| 542 | char *buf) |
| 543 | { |
| 544 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 545 | struct w83791d_data *data = w83791d_update_device(dev); |
| 546 | return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index])); |
| 547 | } |
| 548 | |
| 549 | static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr, |
| 550 | const char *buf, size_t count) |
| 551 | { |
| 552 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 553 | struct i2c_client *client = to_i2c_client(dev); |
| 554 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 555 | long val = simple_strtol(buf, NULL, 10); |
| 556 | int nr = attr->index; |
| 557 | |
| 558 | mutex_lock(&data->update_lock); |
| 559 | data->temp1[nr] = TEMP1_TO_REG(val); |
| 560 | w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]); |
| 561 | mutex_unlock(&data->update_lock); |
| 562 | return count; |
| 563 | } |
| 564 | |
| 565 | /* read/write temperature2-3, includes measured value and limits */ |
| 566 | static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr, |
| 567 | char *buf) |
| 568 | { |
| 569 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 570 | struct w83791d_data *data = w83791d_update_device(dev); |
| 571 | int nr = attr->nr; |
| 572 | int index = attr->index; |
| 573 | return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index])); |
| 574 | } |
| 575 | |
| 576 | static ssize_t store_temp23(struct device *dev, |
| 577 | struct device_attribute *devattr, |
| 578 | const char *buf, size_t count) |
| 579 | { |
| 580 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 581 | struct i2c_client *client = to_i2c_client(dev); |
| 582 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 583 | long val = simple_strtol(buf, NULL, 10); |
| 584 | int nr = attr->nr; |
| 585 | int index = attr->index; |
| 586 | |
| 587 | mutex_lock(&data->update_lock); |
| 588 | data->temp_add[nr][index] = TEMP23_TO_REG(val); |
| 589 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2], |
| 590 | data->temp_add[nr][index] >> 8); |
| 591 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1], |
| 592 | data->temp_add[nr][index] & 0x80); |
| 593 | mutex_unlock(&data->update_lock); |
| 594 | |
| 595 | return count; |
| 596 | } |
| 597 | |
| 598 | static struct sensor_device_attribute_2 sda_temp_input[] = { |
| 599 | SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0), |
| 600 | SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0), |
| 601 | SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0), |
| 602 | }; |
| 603 | |
| 604 | static struct sensor_device_attribute_2 sda_temp_max[] = { |
| 605 | SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, |
| 606 | show_temp1, store_temp1, 0, 1), |
| 607 | SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, |
| 608 | show_temp23, store_temp23, 0, 1), |
| 609 | SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, |
| 610 | show_temp23, store_temp23, 1, 1), |
| 611 | }; |
| 612 | |
| 613 | static struct sensor_device_attribute_2 sda_temp_max_hyst[] = { |
| 614 | SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR, |
| 615 | show_temp1, store_temp1, 0, 2), |
| 616 | SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR, |
| 617 | show_temp23, store_temp23, 0, 2), |
| 618 | SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR, |
| 619 | show_temp23, store_temp23, 1, 2), |
| 620 | }; |
| 621 | |
| 622 | |
| 623 | /* get reatime status of all sensors items: voltage, temp, fan */ |
| 624 | static ssize_t show_alarms_reg(struct device *dev, |
| 625 | struct device_attribute *attr, char *buf) |
| 626 | { |
| 627 | struct w83791d_data *data = w83791d_update_device(dev); |
| 628 | return sprintf(buf, "%u\n", data->alarms); |
| 629 | } |
| 630 | |
| 631 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); |
| 632 | |
| 633 | /* Beep control */ |
| 634 | |
| 635 | #define GLOBAL_BEEP_ENABLE_SHIFT 15 |
| 636 | #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT) |
| 637 | |
| 638 | static ssize_t show_beep_enable(struct device *dev, |
| 639 | struct device_attribute *attr, char *buf) |
| 640 | { |
| 641 | struct w83791d_data *data = w83791d_update_device(dev); |
| 642 | return sprintf(buf, "%d\n", data->beep_enable); |
| 643 | } |
| 644 | |
| 645 | static ssize_t show_beep_mask(struct device *dev, |
| 646 | struct device_attribute *attr, char *buf) |
| 647 | { |
| 648 | struct w83791d_data *data = w83791d_update_device(dev); |
| 649 | return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask)); |
| 650 | } |
| 651 | |
| 652 | |
| 653 | static ssize_t store_beep_mask(struct device *dev, |
| 654 | struct device_attribute *attr, |
| 655 | const char *buf, size_t count) |
| 656 | { |
| 657 | struct i2c_client *client = to_i2c_client(dev); |
| 658 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 659 | long val = simple_strtol(buf, NULL, 10); |
| 660 | int i; |
| 661 | |
| 662 | mutex_lock(&data->update_lock); |
| 663 | |
| 664 | /* The beep_enable state overrides any enabling request from |
| 665 | the masks */ |
| 666 | data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK; |
| 667 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); |
| 668 | |
| 669 | val = data->beep_mask; |
| 670 | |
| 671 | for (i = 0; i < 3; i++) { |
| 672 | w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff)); |
| 673 | val >>= 8; |
| 674 | } |
| 675 | |
| 676 | mutex_unlock(&data->update_lock); |
| 677 | |
| 678 | return count; |
| 679 | } |
| 680 | |
| 681 | static ssize_t store_beep_enable(struct device *dev, |
| 682 | struct device_attribute *attr, |
| 683 | const char *buf, size_t count) |
| 684 | { |
| 685 | struct i2c_client *client = to_i2c_client(dev); |
| 686 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 687 | long val = simple_strtol(buf, NULL, 10); |
| 688 | |
| 689 | mutex_lock(&data->update_lock); |
| 690 | |
| 691 | data->beep_enable = val ? 1 : 0; |
| 692 | |
| 693 | /* Keep the full mask value in sync with the current enable */ |
| 694 | data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK; |
| 695 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); |
| 696 | |
| 697 | /* The global control is in the second beep control register |
| 698 | so only need to update that register */ |
| 699 | val = (data->beep_mask >> 8) & 0xff; |
| 700 | |
| 701 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val); |
| 702 | |
| 703 | mutex_unlock(&data->update_lock); |
| 704 | |
| 705 | return count; |
| 706 | } |
| 707 | |
| 708 | static struct sensor_device_attribute sda_beep_ctrl[] = { |
| 709 | SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR, |
| 710 | show_beep_enable, store_beep_enable, 0), |
| 711 | SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR, |
| 712 | show_beep_mask, store_beep_mask, 1) |
| 713 | }; |
| 714 | |
| 715 | /* cpu voltage regulation information */ |
| 716 | static ssize_t show_vid_reg(struct device *dev, |
| 717 | struct device_attribute *attr, char *buf) |
| 718 | { |
| 719 | struct w83791d_data *data = w83791d_update_device(dev); |
| 720 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); |
| 721 | } |
| 722 | |
| 723 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); |
| 724 | |
| 725 | static ssize_t show_vrm_reg(struct device *dev, |
| 726 | struct device_attribute *attr, char *buf) |
| 727 | { |
| 728 | struct w83791d_data *data = w83791d_update_device(dev); |
| 729 | return sprintf(buf, "%d\n", data->vrm); |
| 730 | } |
| 731 | |
| 732 | static ssize_t store_vrm_reg(struct device *dev, |
| 733 | struct device_attribute *attr, |
| 734 | const char *buf, size_t count) |
| 735 | { |
| 736 | struct i2c_client *client = to_i2c_client(dev); |
| 737 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 738 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 739 | |
| 740 | /* No lock needed as vrm is internal to the driver |
| 741 | (not read from a chip register) and so is not |
| 742 | updated in w83791d_update_device() */ |
| 743 | data->vrm = val; |
| 744 | |
| 745 | return count; |
| 746 | } |
| 747 | |
| 748 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); |
| 749 | |
| 750 | /* This function is called when: |
| 751 | * w83791d_driver is inserted (when this module is loaded), for each |
| 752 | available adapter |
| 753 | * when a new adapter is inserted (and w83791d_driver is still present) */ |
| 754 | static int w83791d_attach_adapter(struct i2c_adapter *adapter) |
| 755 | { |
| 756 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 757 | return 0; |
| 758 | return i2c_probe(adapter, &addr_data, w83791d_detect); |
| 759 | } |
| 760 | |
| 761 | |
| 762 | static int w83791d_create_subclient(struct i2c_adapter *adapter, |
| 763 | struct i2c_client *client, int addr, |
| 764 | struct i2c_client **sub_cli) |
| 765 | { |
| 766 | int err; |
| 767 | struct i2c_client *sub_client; |
| 768 | |
| 769 | (*sub_cli) = sub_client = |
| 770 | kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| 771 | if (!(sub_client)) { |
| 772 | return -ENOMEM; |
| 773 | } |
| 774 | sub_client->addr = 0x48 + addr; |
| 775 | i2c_set_clientdata(sub_client, NULL); |
| 776 | sub_client->adapter = adapter; |
| 777 | sub_client->driver = &w83791d_driver; |
| 778 | strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE); |
| 779 | if ((err = i2c_attach_client(sub_client))) { |
| 780 | dev_err(&client->dev, "subclient registration " |
| 781 | "at address 0x%x failed\n", sub_client->addr); |
| 782 | kfree(sub_client); |
| 783 | return err; |
| 784 | } |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | |
| 789 | static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address, |
| 790 | int kind, struct i2c_client *client) |
| 791 | { |
| 792 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 793 | int i, id, err; |
| 794 | u8 val; |
| 795 | |
| 796 | id = i2c_adapter_id(adapter); |
| 797 | if (force_subclients[0] == id && force_subclients[1] == address) { |
| 798 | for (i = 2; i <= 3; i++) { |
| 799 | if (force_subclients[i] < 0x48 || |
| 800 | force_subclients[i] > 0x4f) { |
| 801 | dev_err(&client->dev, |
| 802 | "invalid subclient " |
| 803 | "address %d; must be 0x48-0x4f\n", |
| 804 | force_subclients[i]); |
| 805 | err = -ENODEV; |
| 806 | goto error_sc_0; |
| 807 | } |
| 808 | } |
| 809 | w83791d_write(client, W83791D_REG_I2C_SUBADDR, |
| 810 | (force_subclients[2] & 0x07) | |
| 811 | ((force_subclients[3] & 0x07) << 4)); |
| 812 | } |
| 813 | |
| 814 | val = w83791d_read(client, W83791D_REG_I2C_SUBADDR); |
| 815 | if (!(val & 0x08)) { |
| 816 | err = w83791d_create_subclient(adapter, client, |
| 817 | val & 0x7, &data->lm75[0]); |
| 818 | if (err < 0) |
| 819 | goto error_sc_0; |
| 820 | } |
| 821 | if (!(val & 0x80)) { |
| 822 | if ((data->lm75[0] != NULL) && |
| 823 | ((val & 0x7) == ((val >> 4) & 0x7))) { |
| 824 | dev_err(&client->dev, |
| 825 | "duplicate addresses 0x%x, " |
| 826 | "use force_subclient\n", |
| 827 | data->lm75[0]->addr); |
| 828 | err = -ENODEV; |
| 829 | goto error_sc_1; |
| 830 | } |
| 831 | err = w83791d_create_subclient(adapter, client, |
| 832 | (val >> 4) & 0x7, &data->lm75[1]); |
| 833 | if (err < 0) |
| 834 | goto error_sc_1; |
| 835 | } |
| 836 | |
| 837 | return 0; |
| 838 | |
| 839 | /* Undo inits in case of errors */ |
| 840 | |
| 841 | error_sc_1: |
| 842 | if (data->lm75[0] != NULL) { |
| 843 | i2c_detach_client(data->lm75[0]); |
| 844 | kfree(data->lm75[0]); |
| 845 | } |
| 846 | error_sc_0: |
| 847 | return err; |
| 848 | } |
| 849 | |
| 850 | |
| 851 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind) |
| 852 | { |
| 853 | struct i2c_client *client; |
| 854 | struct device *dev; |
| 855 | struct w83791d_data *data; |
| 856 | int i, val1, val2; |
| 857 | int err = 0; |
| 858 | const char *client_name = ""; |
| 859 | |
| 860 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
| 861 | goto error0; |
| 862 | } |
| 863 | |
| 864 | /* OK. For now, we presume we have a valid client. We now create the |
| 865 | client structure, even though we cannot fill it completely yet. |
| 866 | But it allows us to access w83791d_{read,write}_value. */ |
| 867 | if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) { |
| 868 | err = -ENOMEM; |
| 869 | goto error0; |
| 870 | } |
| 871 | |
| 872 | client = &data->client; |
| 873 | dev = &client->dev; |
| 874 | i2c_set_clientdata(client, data); |
| 875 | client->addr = address; |
| 876 | client->adapter = adapter; |
| 877 | client->driver = &w83791d_driver; |
| 878 | mutex_init(&data->update_lock); |
| 879 | |
| 880 | /* Now, we do the remaining detection. */ |
| 881 | |
| 882 | /* The w83791d may be stuck in some other bank than bank 0. This may |
| 883 | make reading other information impossible. Specify a force=... |
| 884 | parameter, and the Winbond will be reset to the right bank. */ |
| 885 | if (kind < 0) { |
| 886 | if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) { |
| 887 | dev_dbg(dev, "Detection failed at step 1\n"); |
| 888 | goto error1; |
| 889 | } |
| 890 | val1 = w83791d_read(client, W83791D_REG_BANK); |
| 891 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); |
| 892 | /* Check for Winbond ID if in bank 0 */ |
| 893 | if (!(val1 & 0x07)) { |
| 894 | /* yes it is Bank0 */ |
| 895 | if (((!(val1 & 0x80)) && (val2 != 0xa3)) || |
| 896 | ((val1 & 0x80) && (val2 != 0x5c))) { |
| 897 | dev_dbg(dev, "Detection failed at step 2\n"); |
| 898 | goto error1; |
| 899 | } |
| 900 | } |
| 901 | /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR |
| 902 | should match */ |
| 903 | if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) { |
| 904 | dev_dbg(dev, "Detection failed at step 3\n"); |
| 905 | goto error1; |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | /* We either have a force parameter or we have reason to |
| 910 | believe it is a Winbond chip. Either way, we want bank 0 and |
| 911 | Vendor ID high byte */ |
| 912 | val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78; |
| 913 | w83791d_write(client, W83791D_REG_BANK, val1 | 0x80); |
| 914 | |
| 915 | /* Verify it is a Winbond w83791d */ |
| 916 | if (kind <= 0) { |
| 917 | /* get vendor ID */ |
| 918 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); |
| 919 | if (val2 != 0x5c) { /* the vendor is NOT Winbond */ |
| 920 | dev_dbg(dev, "Detection failed at step 4\n"); |
| 921 | goto error1; |
| 922 | } |
| 923 | val1 = w83791d_read(client, W83791D_REG_WCHIPID); |
| 924 | if (val1 == 0x71) { |
| 925 | kind = w83791d; |
| 926 | } else { |
| 927 | if (kind == 0) |
| 928 | dev_warn(dev, |
| 929 | "w83791d: Ignoring 'force' parameter " |
| 930 | "for unknown chip at adapter %d, " |
| 931 | "address 0x%02x\n", |
| 932 | i2c_adapter_id(adapter), address); |
| 933 | goto error1; |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | if (kind == w83791d) { |
| 938 | client_name = "w83791d"; |
| 939 | } else { |
| 940 | dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?", |
| 941 | kind); |
| 942 | goto error1; |
| 943 | } |
| 944 | |
| 945 | #ifdef DEBUG |
| 946 | val1 = w83791d_read(client, W83791D_REG_DID_VID4); |
| 947 | dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n", |
| 948 | (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1); |
| 949 | #endif |
| 950 | |
| 951 | /* Fill in the remaining client fields and put into the global list */ |
| 952 | strlcpy(client->name, client_name, I2C_NAME_SIZE); |
| 953 | |
| 954 | /* Tell the I2C layer a new client has arrived */ |
| 955 | if ((err = i2c_attach_client(client))) |
| 956 | goto error1; |
| 957 | |
| 958 | if ((err = w83791d_detect_subclients(adapter, address, kind, client))) |
| 959 | goto error2; |
| 960 | |
| 961 | /* Initialize the chip */ |
| 962 | w83791d_init_client(client); |
| 963 | |
| 964 | /* If the fan_div is changed, make sure there is a rational |
| 965 | fan_min in place */ |
| 966 | for (i = 0; i < NUMBER_OF_FANIN; i++) { |
| 967 | data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]); |
| 968 | } |
| 969 | |
| 970 | /* Register sysfs hooks */ |
| 971 | data->class_dev = hwmon_device_register(dev); |
| 972 | if (IS_ERR(data->class_dev)) { |
| 973 | err = PTR_ERR(data->class_dev); |
| 974 | goto error3; |
| 975 | } |
| 976 | |
| 977 | for (i = 0; i < NUMBER_OF_VIN; i++) { |
| 978 | device_create_file(dev, &sda_in_input[i].dev_attr); |
| 979 | device_create_file(dev, &sda_in_min[i].dev_attr); |
| 980 | device_create_file(dev, &sda_in_max[i].dev_attr); |
| 981 | } |
| 982 | |
| 983 | for (i = 0; i < NUMBER_OF_FANIN; i++) { |
| 984 | device_create_file(dev, &sda_fan_input[i].dev_attr); |
| 985 | device_create_file(dev, &sda_fan_div[i].dev_attr); |
| 986 | device_create_file(dev, &sda_fan_min[i].dev_attr); |
| 987 | } |
| 988 | |
| 989 | for (i = 0; i < NUMBER_OF_TEMPIN; i++) { |
| 990 | device_create_file(dev, &sda_temp_input[i].dev_attr); |
| 991 | device_create_file(dev, &sda_temp_max[i].dev_attr); |
| 992 | device_create_file(dev, &sda_temp_max_hyst[i].dev_attr); |
| 993 | } |
| 994 | |
| 995 | device_create_file(dev, &dev_attr_alarms); |
| 996 | |
| 997 | for (i = 0; i < ARRAY_SIZE(sda_beep_ctrl); i++) { |
| 998 | device_create_file(dev, &sda_beep_ctrl[i].dev_attr); |
| 999 | } |
| 1000 | |
| 1001 | device_create_file(dev, &dev_attr_cpu0_vid); |
| 1002 | device_create_file(dev, &dev_attr_vrm); |
| 1003 | |
| 1004 | return 0; |
| 1005 | |
| 1006 | error3: |
| 1007 | if (data->lm75[0] != NULL) { |
| 1008 | i2c_detach_client(data->lm75[0]); |
| 1009 | kfree(data->lm75[0]); |
| 1010 | } |
| 1011 | if (data->lm75[1] != NULL) { |
| 1012 | i2c_detach_client(data->lm75[1]); |
| 1013 | kfree(data->lm75[1]); |
| 1014 | } |
| 1015 | error2: |
| 1016 | i2c_detach_client(client); |
| 1017 | error1: |
| 1018 | kfree(data); |
| 1019 | error0: |
| 1020 | return err; |
| 1021 | } |
| 1022 | |
| 1023 | static int w83791d_detach_client(struct i2c_client *client) |
| 1024 | { |
| 1025 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 1026 | int err; |
| 1027 | |
| 1028 | /* main client */ |
| 1029 | if (data) |
| 1030 | hwmon_device_unregister(data->class_dev); |
| 1031 | |
| 1032 | if ((err = i2c_detach_client(client))) |
| 1033 | return err; |
| 1034 | |
| 1035 | /* main client */ |
| 1036 | if (data) |
| 1037 | kfree(data); |
| 1038 | /* subclient */ |
| 1039 | else |
| 1040 | kfree(client); |
| 1041 | |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
| 1045 | static void w83791d_init_client(struct i2c_client *client) |
| 1046 | { |
| 1047 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 1048 | u8 tmp; |
| 1049 | u8 old_beep; |
| 1050 | |
| 1051 | /* The difference between reset and init is that reset |
| 1052 | does a hard reset of the chip via index 0x40, bit 7, |
| 1053 | but init simply forces certain registers to have "sane" |
| 1054 | values. The hope is that the BIOS has done the right |
| 1055 | thing (which is why the default is reset=0, init=0), |
| 1056 | but if not, reset is the hard hammer and init |
| 1057 | is the soft mallet both of which are trying to whack |
| 1058 | things into place... |
| 1059 | NOTE: The data sheet makes a distinction between |
| 1060 | "power on defaults" and "reset by MR". As far as I can tell, |
| 1061 | the hard reset puts everything into a power-on state so I'm |
| 1062 | not sure what "reset by MR" means or how it can happen. |
| 1063 | */ |
| 1064 | if (reset || init) { |
| 1065 | /* keep some BIOS settings when we... */ |
| 1066 | old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG); |
| 1067 | |
| 1068 | if (reset) { |
| 1069 | /* ... reset the chip and ... */ |
| 1070 | w83791d_write(client, W83791D_REG_CONFIG, 0x80); |
| 1071 | } |
| 1072 | |
| 1073 | /* ... disable power-on abnormal beep */ |
| 1074 | w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80); |
| 1075 | |
| 1076 | /* disable the global beep (not done by hard reset) */ |
| 1077 | tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]); |
| 1078 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef); |
| 1079 | |
| 1080 | if (init) { |
| 1081 | /* Make sure monitoring is turned on for add-ons */ |
| 1082 | tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG); |
| 1083 | if (tmp & 1) { |
| 1084 | w83791d_write(client, W83791D_REG_TEMP2_CONFIG, |
| 1085 | tmp & 0xfe); |
| 1086 | } |
| 1087 | |
| 1088 | tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG); |
| 1089 | if (tmp & 1) { |
| 1090 | w83791d_write(client, W83791D_REG_TEMP3_CONFIG, |
| 1091 | tmp & 0xfe); |
| 1092 | } |
| 1093 | |
| 1094 | /* Start monitoring */ |
| 1095 | tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7; |
| 1096 | w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01); |
| 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | data->vrm = vid_which_vrm(); |
| 1101 | } |
| 1102 | |
| 1103 | static struct w83791d_data *w83791d_update_device(struct device *dev) |
| 1104 | { |
| 1105 | struct i2c_client *client = to_i2c_client(dev); |
| 1106 | struct w83791d_data *data = i2c_get_clientdata(client); |
| 1107 | int i, j; |
| 1108 | u8 reg_array_tmp[3]; |
| 1109 | |
| 1110 | mutex_lock(&data->update_lock); |
| 1111 | |
| 1112 | if (time_after(jiffies, data->last_updated + (HZ * 3)) |
| 1113 | || !data->valid) { |
| 1114 | dev_dbg(dev, "Starting w83791d device update\n"); |
| 1115 | |
| 1116 | /* Update the voltages measured value and limits */ |
| 1117 | for (i = 0; i < NUMBER_OF_VIN; i++) { |
| 1118 | data->in[i] = w83791d_read(client, |
| 1119 | W83791D_REG_IN[i]); |
| 1120 | data->in_max[i] = w83791d_read(client, |
| 1121 | W83791D_REG_IN_MAX[i]); |
| 1122 | data->in_min[i] = w83791d_read(client, |
| 1123 | W83791D_REG_IN_MIN[i]); |
| 1124 | } |
| 1125 | |
| 1126 | /* Update the fan counts and limits */ |
| 1127 | for (i = 0; i < NUMBER_OF_FANIN; i++) { |
| 1128 | /* Update the Fan measured value and limits */ |
| 1129 | data->fan[i] = w83791d_read(client, |
| 1130 | W83791D_REG_FAN[i]); |
| 1131 | data->fan_min[i] = w83791d_read(client, |
| 1132 | W83791D_REG_FAN_MIN[i]); |
| 1133 | } |
| 1134 | |
| 1135 | /* Update the fan divisor */ |
| 1136 | for (i = 0; i < 3; i++) { |
| 1137 | reg_array_tmp[i] = w83791d_read(client, |
| 1138 | W83791D_REG_FAN_DIV[i]); |
| 1139 | } |
| 1140 | data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03; |
| 1141 | data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03; |
| 1142 | data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03; |
| 1143 | data->fan_div[3] = reg_array_tmp[2] & 0x07; |
| 1144 | data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07; |
| 1145 | |
| 1146 | /* Update the first temperature sensor */ |
| 1147 | for (i = 0; i < 3; i++) { |
| 1148 | data->temp1[i] = w83791d_read(client, |
| 1149 | W83791D_REG_TEMP1[i]); |
| 1150 | } |
| 1151 | |
| 1152 | /* Update the rest of the temperature sensors */ |
| 1153 | for (i = 0; i < 2; i++) { |
| 1154 | for (j = 0; j < 3; j++) { |
| 1155 | data->temp_add[i][j] = |
| 1156 | (w83791d_read(client, |
| 1157 | W83791D_REG_TEMP_ADD[i][j * 2]) << 8) | |
| 1158 | w83791d_read(client, |
| 1159 | W83791D_REG_TEMP_ADD[i][j * 2 + 1]); |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | /* Update the realtime status */ |
| 1164 | data->alarms = |
| 1165 | w83791d_read(client, W83791D_REG_ALARM1) + |
| 1166 | (w83791d_read(client, W83791D_REG_ALARM2) << 8) + |
| 1167 | (w83791d_read(client, W83791D_REG_ALARM3) << 16); |
| 1168 | |
| 1169 | /* Update the beep configuration information */ |
| 1170 | data->beep_mask = |
| 1171 | w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) + |
| 1172 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) + |
| 1173 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16); |
| 1174 | |
Charles Spirakis | 125751c | 2006-09-24 20:53:04 +0200 | [diff] [blame^] | 1175 | /* Extract global beep enable flag */ |
Charles Spirakis | 9873964 | 2006-04-25 14:21:03 +0200 | [diff] [blame] | 1176 | data->beep_enable = |
| 1177 | (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01; |
| 1178 | |
| 1179 | /* Update the cpu voltage information */ |
| 1180 | i = w83791d_read(client, W83791D_REG_VID_FANDIV); |
| 1181 | data->vid = i & 0x0f; |
| 1182 | data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01) |
| 1183 | << 4; |
| 1184 | |
| 1185 | data->last_updated = jiffies; |
| 1186 | data->valid = 1; |
| 1187 | } |
| 1188 | |
| 1189 | mutex_unlock(&data->update_lock); |
| 1190 | |
| 1191 | #ifdef DEBUG |
| 1192 | w83791d_print_debug(data, dev); |
| 1193 | #endif |
| 1194 | |
| 1195 | return data; |
| 1196 | } |
| 1197 | |
| 1198 | #ifdef DEBUG |
| 1199 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev) |
| 1200 | { |
| 1201 | int i = 0, j = 0; |
| 1202 | |
| 1203 | dev_dbg(dev, "======Start of w83791d debug values======\n"); |
| 1204 | dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN); |
| 1205 | for (i = 0; i < NUMBER_OF_VIN; i++) { |
| 1206 | dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]); |
| 1207 | dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]); |
| 1208 | dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]); |
| 1209 | } |
| 1210 | dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN); |
| 1211 | for (i = 0; i < NUMBER_OF_FANIN; i++) { |
| 1212 | dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]); |
| 1213 | dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]); |
| 1214 | dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]); |
| 1215 | } |
| 1216 | |
| 1217 | /* temperature math is signed, but only print out the |
| 1218 | bits that matter */ |
| 1219 | dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN); |
| 1220 | for (i = 0; i < 3; i++) { |
| 1221 | dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]); |
| 1222 | } |
| 1223 | for (i = 0; i < 2; i++) { |
| 1224 | for (j = 0; j < 3; j++) { |
| 1225 | dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j, |
| 1226 | (u16) data->temp_add[i][j]); |
| 1227 | } |
| 1228 | } |
| 1229 | |
| 1230 | dev_dbg(dev, "Misc Information: ===>\n"); |
| 1231 | dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms); |
| 1232 | dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask); |
| 1233 | dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable); |
| 1234 | dev_dbg(dev, "vid is: 0x%02x\n", data->vid); |
| 1235 | dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm); |
| 1236 | dev_dbg(dev, "=======End of w83791d debug values========\n"); |
| 1237 | dev_dbg(dev, "\n"); |
| 1238 | } |
| 1239 | #endif |
| 1240 | |
| 1241 | static int __init sensors_w83791d_init(void) |
| 1242 | { |
| 1243 | return i2c_add_driver(&w83791d_driver); |
| 1244 | } |
| 1245 | |
| 1246 | static void __exit sensors_w83791d_exit(void) |
| 1247 | { |
| 1248 | i2c_del_driver(&w83791d_driver); |
| 1249 | } |
| 1250 | |
| 1251 | MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>"); |
| 1252 | MODULE_DESCRIPTION("W83791D driver"); |
| 1253 | MODULE_LICENSE("GPL"); |
| 1254 | |
| 1255 | module_init(sensors_w83791d_init); |
| 1256 | module_exit(sensors_w83791d_exit); |