Hans de Goede | 569ff10 | 2007-10-11 08:06:29 -0400 | [diff] [blame] | 1 | /* fschmd.c |
| 2 | * |
| 3 | * Copyright (C) 2007 Hans de Goede <j.w.r.degoede@hhs.nl> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Merged Fujitsu Siemens hwmon driver, supporting the Poseidon, Hermes, |
| 22 | * Scylla, Heracles and Heimdall chips |
| 23 | * |
| 24 | * Based on the original 2.4 fscscy, 2.6 fscpos, 2.6 fscher and 2.6 |
| 25 | * (candidate) fschmd drivers: |
| 26 | * Copyright (C) 2006 Thilo Cestonaro |
| 27 | * <thilo.cestonaro.external@fujitsu-siemens.com> |
| 28 | * Copyright (C) 2004, 2005 Stefan Ott <stefan@desire.ch> |
| 29 | * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de> |
| 30 | * Copyright (c) 2001 Martin Knoblauch <mkn@teraport.de, knobi@knobisoft.de> |
| 31 | * Copyright (C) 2000 Hermann Jung <hej@odn.de> |
| 32 | */ |
| 33 | |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/init.h> |
| 36 | #include <linux/slab.h> |
| 37 | #include <linux/jiffies.h> |
| 38 | #include <linux/i2c.h> |
| 39 | #include <linux/hwmon.h> |
| 40 | #include <linux/hwmon-sysfs.h> |
| 41 | #include <linux/err.h> |
| 42 | #include <linux/mutex.h> |
| 43 | #include <linux/sysfs.h> |
| 44 | |
| 45 | /* Addresses to scan */ |
| 46 | static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
| 47 | |
| 48 | /* Insmod parameters */ |
| 49 | I2C_CLIENT_INSMOD_5(fscpos, fscher, fscscy, fschrc, fschmd); |
| 50 | |
| 51 | /* |
| 52 | * The FSCHMD registers and other defines |
| 53 | */ |
| 54 | |
| 55 | /* chip identification */ |
| 56 | #define FSCHMD_REG_IDENT_0 0x00 |
| 57 | #define FSCHMD_REG_IDENT_1 0x01 |
| 58 | #define FSCHMD_REG_IDENT_2 0x02 |
| 59 | #define FSCHMD_REG_REVISION 0x03 |
| 60 | |
| 61 | /* global control and status */ |
| 62 | #define FSCHMD_REG_EVENT_STATE 0x04 |
| 63 | #define FSCHMD_REG_CONTROL 0x05 |
| 64 | |
| 65 | #define FSCHMD_CONTROL_ALERT_LED_MASK 0x01 |
| 66 | |
| 67 | /* watchdog (support to be implemented) */ |
| 68 | #define FSCHMD_REG_WDOG_PRESET 0x28 |
| 69 | #define FSCHMD_REG_WDOG_STATE 0x23 |
| 70 | #define FSCHMD_REG_WDOG_CONTROL 0x21 |
| 71 | |
| 72 | /* voltages, weird order is to keep the same order as the old drivers */ |
| 73 | static const u8 FSCHMD_REG_VOLT[3] = { 0x45, 0x42, 0x48 }; |
| 74 | |
| 75 | /* minimum pwm at which the fan is driven (pwm can by increased depending on |
| 76 | the temp. Notice that for the scy some fans share there minimum speed. |
| 77 | Also notice that with the scy the sensor order is different then with the |
| 78 | other chips, this order was in the 2.4 driver and kept for consistency. */ |
| 79 | static const u8 FSCHMD_REG_FAN_MIN[5][6] = { |
| 80 | { 0x55, 0x65 }, /* pos */ |
| 81 | { 0x55, 0x65, 0xb5 }, /* her */ |
| 82 | { 0x65, 0x65, 0x55, 0xa5, 0x55, 0xa5 }, /* scy */ |
| 83 | { 0x55, 0x65, 0xa5, 0xb5 }, /* hrc */ |
| 84 | { 0x55, 0x65, 0xa5, 0xb5, 0xc5 }, /* hmd */ |
| 85 | }; |
| 86 | |
| 87 | /* actual fan speed */ |
| 88 | static const u8 FSCHMD_REG_FAN_ACT[5][6] = { |
| 89 | { 0x0e, 0x6b, 0xab }, /* pos */ |
| 90 | { 0x0e, 0x6b, 0xbb }, /* her */ |
| 91 | { 0x6b, 0x6c, 0x0e, 0xab, 0x5c, 0xbb }, /* scy */ |
| 92 | { 0x0e, 0x6b, 0xab, 0xbb }, /* hrc */ |
| 93 | { 0x5b, 0x6b, 0xab, 0xbb, 0xcb }, /* hmd */ |
| 94 | }; |
| 95 | |
| 96 | /* fan status registers */ |
| 97 | static const u8 FSCHMD_REG_FAN_STATE[5][6] = { |
| 98 | { 0x0d, 0x62, 0xa2 }, /* pos */ |
| 99 | { 0x0d, 0x62, 0xb2 }, /* her */ |
| 100 | { 0x62, 0x61, 0x0d, 0xa2, 0x52, 0xb2 }, /* scy */ |
| 101 | { 0x0d, 0x62, 0xa2, 0xb2 }, /* hrc */ |
| 102 | { 0x52, 0x62, 0xa2, 0xb2, 0xc2 }, /* hmd */ |
| 103 | }; |
| 104 | |
| 105 | /* fan ripple / divider registers */ |
| 106 | static const u8 FSCHMD_REG_FAN_RIPPLE[5][6] = { |
| 107 | { 0x0f, 0x6f, 0xaf }, /* pos */ |
| 108 | { 0x0f, 0x6f, 0xbf }, /* her */ |
| 109 | { 0x6f, 0x6f, 0x0f, 0xaf, 0x0f, 0xbf }, /* scy */ |
| 110 | { 0x0f, 0x6f, 0xaf, 0xbf }, /* hrc */ |
| 111 | { 0x5f, 0x6f, 0xaf, 0xbf, 0xcf }, /* hmd */ |
| 112 | }; |
| 113 | |
| 114 | static const int FSCHMD_NO_FAN_SENSORS[5] = { 3, 3, 6, 4, 5 }; |
| 115 | |
| 116 | /* Fan status register bitmasks */ |
| 117 | #define FSCHMD_FAN_ALARM_MASK 0x04 /* called fault by FSC! */ |
| 118 | #define FSCHMD_FAN_NOT_PRESENT_MASK 0x08 /* not documented */ |
| 119 | |
| 120 | |
| 121 | /* actual temperature registers */ |
| 122 | static const u8 FSCHMD_REG_TEMP_ACT[5][5] = { |
| 123 | { 0x64, 0x32, 0x35 }, /* pos */ |
| 124 | { 0x64, 0x32, 0x35 }, /* her */ |
| 125 | { 0x64, 0xD0, 0x32, 0x35 }, /* scy */ |
| 126 | { 0x64, 0x32, 0x35 }, /* hrc */ |
| 127 | { 0x70, 0x80, 0x90, 0xd0, 0xe0 }, /* hmd */ |
| 128 | }; |
| 129 | |
| 130 | /* temperature state registers */ |
| 131 | static const u8 FSCHMD_REG_TEMP_STATE[5][5] = { |
| 132 | { 0x71, 0x81, 0x91 }, /* pos */ |
| 133 | { 0x71, 0x81, 0x91 }, /* her */ |
| 134 | { 0x71, 0xd1, 0x81, 0x91 }, /* scy */ |
| 135 | { 0x71, 0x81, 0x91 }, /* hrc */ |
Jean Delvare | 7dcf9a3 | 2007-11-24 17:45:09 -0500 | [diff] [blame] | 136 | { 0x71, 0x81, 0x91, 0xd1, 0xe1 }, /* hmd */ |
Hans de Goede | 569ff10 | 2007-10-11 08:06:29 -0400 | [diff] [blame] | 137 | }; |
| 138 | |
| 139 | /* temperature high limit registers, FSC does not document these. Proven to be |
| 140 | there with field testing on the fscher and fschrc, already supported / used |
| 141 | in the fscscy 2.4 driver. FSC has confirmed that the fschmd has registers |
| 142 | at these addresses, but doesn't want to confirm they are the same as with |
| 143 | the fscher?? */ |
| 144 | static const u8 FSCHMD_REG_TEMP_LIMIT[5][5] = { |
| 145 | { 0, 0, 0 }, /* pos */ |
| 146 | { 0x76, 0x86, 0x96 }, /* her */ |
| 147 | { 0x76, 0xd6, 0x86, 0x96 }, /* scy */ |
| 148 | { 0x76, 0x86, 0x96 }, /* hrc */ |
Jean Delvare | 7dcf9a3 | 2007-11-24 17:45:09 -0500 | [diff] [blame] | 149 | { 0x76, 0x86, 0x96, 0xd6, 0xe6 }, /* hmd */ |
Hans de Goede | 569ff10 | 2007-10-11 08:06:29 -0400 | [diff] [blame] | 150 | }; |
| 151 | |
| 152 | /* These were found through experimenting with an fscher, currently they are |
| 153 | not used, but we keep them around for future reference. |
| 154 | static const u8 FSCHER_REG_TEMP_AUTOP1[] = { 0x73, 0x83, 0x93 }; |
| 155 | static const u8 FSCHER_REG_TEMP_AUTOP2[] = { 0x75, 0x85, 0x95 }; */ |
| 156 | |
| 157 | static const int FSCHMD_NO_TEMP_SENSORS[5] = { 3, 3, 4, 3, 5 }; |
| 158 | |
| 159 | /* temp status register bitmasks */ |
| 160 | #define FSCHMD_TEMP_WORKING_MASK 0x01 |
| 161 | #define FSCHMD_TEMP_ALERT_MASK 0x02 |
| 162 | /* there only really is an alarm if the sensor is working and alert == 1 */ |
| 163 | #define FSCHMD_TEMP_ALARM_MASK \ |
| 164 | (FSCHMD_TEMP_WORKING_MASK | FSCHMD_TEMP_ALERT_MASK) |
| 165 | |
| 166 | /* our driver name */ |
| 167 | #define FSCHMD_NAME "fschmd" |
| 168 | |
| 169 | /* |
| 170 | * Functions declarations |
| 171 | */ |
| 172 | |
| 173 | static int fschmd_attach_adapter(struct i2c_adapter *adapter); |
| 174 | static int fschmd_detach_client(struct i2c_client *client); |
| 175 | static struct fschmd_data *fschmd_update_device(struct device *dev); |
| 176 | |
| 177 | /* |
| 178 | * Driver data (common to all clients) |
| 179 | */ |
| 180 | |
| 181 | static struct i2c_driver fschmd_driver = { |
| 182 | .driver = { |
| 183 | .name = FSCHMD_NAME, |
| 184 | }, |
| 185 | .attach_adapter = fschmd_attach_adapter, |
| 186 | .detach_client = fschmd_detach_client, |
| 187 | }; |
| 188 | |
| 189 | /* |
| 190 | * Client data (each client gets its own) |
| 191 | */ |
| 192 | |
| 193 | struct fschmd_data { |
| 194 | struct i2c_client client; |
| 195 | struct device *hwmon_dev; |
| 196 | struct mutex update_lock; |
| 197 | int kind; |
| 198 | char valid; /* zero until following fields are valid */ |
| 199 | unsigned long last_updated; /* in jiffies */ |
| 200 | |
| 201 | /* register values */ |
| 202 | u8 global_control; /* global control register */ |
| 203 | u8 volt[3]; /* 12, 5, battery voltage */ |
| 204 | u8 temp_act[5]; /* temperature */ |
| 205 | u8 temp_status[5]; /* status of sensor */ |
| 206 | u8 temp_max[5]; /* high temp limit, notice: undocumented! */ |
| 207 | u8 fan_act[6]; /* fans revolutions per second */ |
| 208 | u8 fan_status[6]; /* fan status */ |
| 209 | u8 fan_min[6]; /* fan min value for rps */ |
| 210 | u8 fan_ripple[6]; /* divider for rps */ |
| 211 | }; |
| 212 | |
| 213 | /* |
| 214 | * Sysfs attr show / store functions |
| 215 | */ |
| 216 | |
| 217 | static ssize_t show_in_value(struct device *dev, |
| 218 | struct device_attribute *devattr, char *buf) |
| 219 | { |
| 220 | const int max_reading[3] = { 14200, 6600, 3300 }; |
| 221 | int index = to_sensor_dev_attr(devattr)->index; |
| 222 | struct fschmd_data *data = fschmd_update_device(dev); |
| 223 | |
| 224 | return sprintf(buf, "%d\n", (data->volt[index] * |
| 225 | max_reading[index] + 128) / 255); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) |
| 230 | |
| 231 | static ssize_t show_temp_value(struct device *dev, |
| 232 | struct device_attribute *devattr, char *buf) |
| 233 | { |
| 234 | int index = to_sensor_dev_attr(devattr)->index; |
| 235 | struct fschmd_data *data = fschmd_update_device(dev); |
| 236 | |
| 237 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[index])); |
| 238 | } |
| 239 | |
| 240 | static ssize_t show_temp_max(struct device *dev, |
| 241 | struct device_attribute *devattr, char *buf) |
| 242 | { |
| 243 | int index = to_sensor_dev_attr(devattr)->index; |
| 244 | struct fschmd_data *data = fschmd_update_device(dev); |
| 245 | |
| 246 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index])); |
| 247 | } |
| 248 | |
| 249 | static ssize_t store_temp_max(struct device *dev, struct device_attribute |
| 250 | *devattr, const char *buf, size_t count) |
| 251 | { |
| 252 | int index = to_sensor_dev_attr(devattr)->index; |
| 253 | struct fschmd_data *data = dev_get_drvdata(dev); |
| 254 | long v = simple_strtol(buf, NULL, 10) / 1000; |
| 255 | |
| 256 | v = SENSORS_LIMIT(v, -128, 127) + 128; |
| 257 | |
| 258 | mutex_lock(&data->update_lock); |
| 259 | i2c_smbus_write_byte_data(&data->client, |
| 260 | FSCHMD_REG_TEMP_LIMIT[data->kind][index], v); |
| 261 | data->temp_max[index] = v; |
| 262 | mutex_unlock(&data->update_lock); |
| 263 | |
| 264 | return count; |
| 265 | } |
| 266 | |
| 267 | static ssize_t show_temp_fault(struct device *dev, |
| 268 | struct device_attribute *devattr, char *buf) |
| 269 | { |
| 270 | int index = to_sensor_dev_attr(devattr)->index; |
| 271 | struct fschmd_data *data = fschmd_update_device(dev); |
| 272 | |
| 273 | /* bit 0 set means sensor working ok, so no fault! */ |
| 274 | if (data->temp_status[index] & FSCHMD_TEMP_WORKING_MASK) |
| 275 | return sprintf(buf, "0\n"); |
| 276 | else |
| 277 | return sprintf(buf, "1\n"); |
| 278 | } |
| 279 | |
| 280 | static ssize_t show_temp_alarm(struct device *dev, |
| 281 | struct device_attribute *devattr, char *buf) |
| 282 | { |
| 283 | int index = to_sensor_dev_attr(devattr)->index; |
| 284 | struct fschmd_data *data = fschmd_update_device(dev); |
| 285 | |
| 286 | if ((data->temp_status[index] & FSCHMD_TEMP_ALARM_MASK) == |
| 287 | FSCHMD_TEMP_ALARM_MASK) |
| 288 | return sprintf(buf, "1\n"); |
| 289 | else |
| 290 | return sprintf(buf, "0\n"); |
| 291 | } |
| 292 | |
| 293 | |
| 294 | #define RPM_FROM_REG(val) ((val) * 60) |
| 295 | |
| 296 | static ssize_t show_fan_value(struct device *dev, |
| 297 | struct device_attribute *devattr, char *buf) |
| 298 | { |
| 299 | int index = to_sensor_dev_attr(devattr)->index; |
| 300 | struct fschmd_data *data = fschmd_update_device(dev); |
| 301 | |
| 302 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[index])); |
| 303 | } |
| 304 | |
| 305 | static ssize_t show_fan_div(struct device *dev, |
| 306 | struct device_attribute *devattr, char *buf) |
| 307 | { |
| 308 | int index = to_sensor_dev_attr(devattr)->index; |
| 309 | struct fschmd_data *data = fschmd_update_device(dev); |
| 310 | |
| 311 | /* bits 2..7 reserved => mask with 3 */ |
| 312 | return sprintf(buf, "%d\n", 1 << (data->fan_ripple[index] & 3)); |
| 313 | } |
| 314 | |
| 315 | static ssize_t store_fan_div(struct device *dev, struct device_attribute |
| 316 | *devattr, const char *buf, size_t count) |
| 317 | { |
| 318 | u8 reg; |
| 319 | int index = to_sensor_dev_attr(devattr)->index; |
| 320 | struct fschmd_data *data = dev_get_drvdata(dev); |
| 321 | /* supported values: 2, 4, 8 */ |
| 322 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 323 | |
| 324 | switch (v) { |
| 325 | case 2: v = 1; break; |
| 326 | case 4: v = 2; break; |
| 327 | case 8: v = 3; break; |
| 328 | default: |
| 329 | dev_err(dev, "fan_div value %lu not supported. " |
| 330 | "Choose one of 2, 4 or 8!\n", v); |
| 331 | return -EINVAL; |
| 332 | } |
| 333 | |
| 334 | mutex_lock(&data->update_lock); |
| 335 | |
| 336 | reg = i2c_smbus_read_byte_data(&data->client, |
| 337 | FSCHMD_REG_FAN_RIPPLE[data->kind][index]); |
| 338 | |
| 339 | /* bits 2..7 reserved => mask with 0x03 */ |
| 340 | reg &= ~0x03; |
| 341 | reg |= v; |
| 342 | |
| 343 | i2c_smbus_write_byte_data(&data->client, |
| 344 | FSCHMD_REG_FAN_RIPPLE[data->kind][index], reg); |
| 345 | |
| 346 | data->fan_ripple[index] = reg; |
| 347 | |
| 348 | mutex_unlock(&data->update_lock); |
| 349 | |
| 350 | return count; |
| 351 | } |
| 352 | |
| 353 | static ssize_t show_fan_alarm(struct device *dev, |
| 354 | struct device_attribute *devattr, char *buf) |
| 355 | { |
| 356 | int index = to_sensor_dev_attr(devattr)->index; |
| 357 | struct fschmd_data *data = fschmd_update_device(dev); |
| 358 | |
| 359 | if (data->fan_status[index] & FSCHMD_FAN_ALARM_MASK) |
| 360 | return sprintf(buf, "1\n"); |
| 361 | else |
| 362 | return sprintf(buf, "0\n"); |
| 363 | } |
| 364 | |
| 365 | static ssize_t show_fan_fault(struct device *dev, |
| 366 | struct device_attribute *devattr, char *buf) |
| 367 | { |
| 368 | int index = to_sensor_dev_attr(devattr)->index; |
| 369 | struct fschmd_data *data = fschmd_update_device(dev); |
| 370 | |
| 371 | if (data->fan_status[index] & FSCHMD_FAN_NOT_PRESENT_MASK) |
| 372 | return sprintf(buf, "1\n"); |
| 373 | else |
| 374 | return sprintf(buf, "0\n"); |
| 375 | } |
| 376 | |
| 377 | |
| 378 | static ssize_t show_pwm_auto_point1_pwm(struct device *dev, |
| 379 | struct device_attribute *devattr, char *buf) |
| 380 | { |
| 381 | int index = to_sensor_dev_attr(devattr)->index; |
| 382 | int val = fschmd_update_device(dev)->fan_min[index]; |
| 383 | |
| 384 | /* 0 = allow turning off, 1-255 = 50-100% */ |
| 385 | if (val) |
| 386 | val = val / 2 + 128; |
| 387 | |
| 388 | return sprintf(buf, "%d\n", val); |
| 389 | } |
| 390 | |
| 391 | static ssize_t store_pwm_auto_point1_pwm(struct device *dev, |
| 392 | struct device_attribute *devattr, const char *buf, size_t count) |
| 393 | { |
| 394 | int index = to_sensor_dev_attr(devattr)->index; |
| 395 | struct fschmd_data *data = dev_get_drvdata(dev); |
| 396 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 397 | |
| 398 | /* register: 0 = allow turning off, 1-255 = 50-100% */ |
| 399 | if (v) { |
| 400 | v = SENSORS_LIMIT(v, 128, 255); |
| 401 | v = (v - 128) * 2 + 1; |
| 402 | } |
| 403 | |
| 404 | mutex_lock(&data->update_lock); |
| 405 | |
| 406 | i2c_smbus_write_byte_data(&data->client, |
| 407 | FSCHMD_REG_FAN_MIN[data->kind][index], v); |
| 408 | data->fan_min[index] = v; |
| 409 | |
| 410 | mutex_unlock(&data->update_lock); |
| 411 | |
| 412 | return count; |
| 413 | } |
| 414 | |
| 415 | |
| 416 | /* The FSC hwmon family has the ability to force an attached alert led to flash |
| 417 | from software, we export this as an alert_led sysfs attr */ |
| 418 | static ssize_t show_alert_led(struct device *dev, |
| 419 | struct device_attribute *devattr, char *buf) |
| 420 | { |
| 421 | struct fschmd_data *data = fschmd_update_device(dev); |
| 422 | |
| 423 | if (data->global_control & FSCHMD_CONTROL_ALERT_LED_MASK) |
| 424 | return sprintf(buf, "1\n"); |
| 425 | else |
| 426 | return sprintf(buf, "0\n"); |
| 427 | } |
| 428 | |
| 429 | static ssize_t store_alert_led(struct device *dev, |
| 430 | struct device_attribute *devattr, const char *buf, size_t count) |
| 431 | { |
| 432 | u8 reg; |
| 433 | struct fschmd_data *data = dev_get_drvdata(dev); |
| 434 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 435 | |
| 436 | mutex_lock(&data->update_lock); |
| 437 | |
| 438 | reg = i2c_smbus_read_byte_data(&data->client, FSCHMD_REG_CONTROL); |
| 439 | |
| 440 | if (v) |
| 441 | reg |= FSCHMD_CONTROL_ALERT_LED_MASK; |
| 442 | else |
| 443 | reg &= ~FSCHMD_CONTROL_ALERT_LED_MASK; |
| 444 | |
| 445 | i2c_smbus_write_byte_data(&data->client, FSCHMD_REG_CONTROL, reg); |
| 446 | |
| 447 | data->global_control = reg; |
| 448 | |
| 449 | mutex_unlock(&data->update_lock); |
| 450 | |
| 451 | return count; |
| 452 | } |
| 453 | |
| 454 | static struct sensor_device_attribute fschmd_attr[] = { |
| 455 | SENSOR_ATTR(in0_input, 0444, show_in_value, NULL, 0), |
| 456 | SENSOR_ATTR(in1_input, 0444, show_in_value, NULL, 1), |
| 457 | SENSOR_ATTR(in2_input, 0444, show_in_value, NULL, 2), |
| 458 | SENSOR_ATTR(alert_led, 0644, show_alert_led, store_alert_led, 0), |
| 459 | }; |
| 460 | |
| 461 | static struct sensor_device_attribute fschmd_temp_attr[] = { |
| 462 | SENSOR_ATTR(temp1_input, 0444, show_temp_value, NULL, 0), |
| 463 | SENSOR_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 0), |
| 464 | SENSOR_ATTR(temp1_fault, 0444, show_temp_fault, NULL, 0), |
| 465 | SENSOR_ATTR(temp1_alarm, 0444, show_temp_alarm, NULL, 0), |
| 466 | SENSOR_ATTR(temp2_input, 0444, show_temp_value, NULL, 1), |
| 467 | SENSOR_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 1), |
| 468 | SENSOR_ATTR(temp2_fault, 0444, show_temp_fault, NULL, 1), |
| 469 | SENSOR_ATTR(temp2_alarm, 0444, show_temp_alarm, NULL, 1), |
| 470 | SENSOR_ATTR(temp3_input, 0444, show_temp_value, NULL, 2), |
| 471 | SENSOR_ATTR(temp3_max, 0644, show_temp_max, store_temp_max, 2), |
| 472 | SENSOR_ATTR(temp3_fault, 0444, show_temp_fault, NULL, 2), |
| 473 | SENSOR_ATTR(temp3_alarm, 0444, show_temp_alarm, NULL, 2), |
| 474 | SENSOR_ATTR(temp4_input, 0444, show_temp_value, NULL, 3), |
| 475 | SENSOR_ATTR(temp4_max, 0644, show_temp_max, store_temp_max, 3), |
| 476 | SENSOR_ATTR(temp4_fault, 0444, show_temp_fault, NULL, 3), |
| 477 | SENSOR_ATTR(temp4_alarm, 0444, show_temp_alarm, NULL, 3), |
| 478 | SENSOR_ATTR(temp5_input, 0444, show_temp_value, NULL, 4), |
| 479 | SENSOR_ATTR(temp5_max, 0644, show_temp_max, store_temp_max, 4), |
| 480 | SENSOR_ATTR(temp5_fault, 0444, show_temp_fault, NULL, 4), |
| 481 | SENSOR_ATTR(temp5_alarm, 0444, show_temp_alarm, NULL, 4), |
| 482 | }; |
| 483 | |
| 484 | static struct sensor_device_attribute fschmd_fan_attr[] = { |
| 485 | SENSOR_ATTR(fan1_input, 0444, show_fan_value, NULL, 0), |
| 486 | SENSOR_ATTR(fan1_div, 0644, show_fan_div, store_fan_div, 0), |
| 487 | SENSOR_ATTR(fan1_alarm, 0444, show_fan_alarm, NULL, 0), |
| 488 | SENSOR_ATTR(fan1_fault, 0444, show_fan_fault, NULL, 0), |
| 489 | SENSOR_ATTR(pwm1_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 490 | store_pwm_auto_point1_pwm, 0), |
| 491 | SENSOR_ATTR(fan2_input, 0444, show_fan_value, NULL, 1), |
| 492 | SENSOR_ATTR(fan2_div, 0644, show_fan_div, store_fan_div, 1), |
| 493 | SENSOR_ATTR(fan2_alarm, 0444, show_fan_alarm, NULL, 1), |
| 494 | SENSOR_ATTR(fan2_fault, 0444, show_fan_fault, NULL, 1), |
| 495 | SENSOR_ATTR(pwm2_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 496 | store_pwm_auto_point1_pwm, 1), |
| 497 | SENSOR_ATTR(fan3_input, 0444, show_fan_value, NULL, 2), |
| 498 | SENSOR_ATTR(fan3_div, 0644, show_fan_div, store_fan_div, 2), |
| 499 | SENSOR_ATTR(fan3_alarm, 0444, show_fan_alarm, NULL, 2), |
| 500 | SENSOR_ATTR(fan3_fault, 0444, show_fan_fault, NULL, 2), |
| 501 | SENSOR_ATTR(pwm3_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 502 | store_pwm_auto_point1_pwm, 2), |
| 503 | SENSOR_ATTR(fan4_input, 0444, show_fan_value, NULL, 3), |
| 504 | SENSOR_ATTR(fan4_div, 0644, show_fan_div, store_fan_div, 3), |
| 505 | SENSOR_ATTR(fan4_alarm, 0444, show_fan_alarm, NULL, 3), |
| 506 | SENSOR_ATTR(fan4_fault, 0444, show_fan_fault, NULL, 3), |
| 507 | SENSOR_ATTR(pwm4_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 508 | store_pwm_auto_point1_pwm, 3), |
| 509 | SENSOR_ATTR(fan5_input, 0444, show_fan_value, NULL, 4), |
| 510 | SENSOR_ATTR(fan5_div, 0644, show_fan_div, store_fan_div, 4), |
| 511 | SENSOR_ATTR(fan5_alarm, 0444, show_fan_alarm, NULL, 4), |
| 512 | SENSOR_ATTR(fan5_fault, 0444, show_fan_fault, NULL, 4), |
| 513 | SENSOR_ATTR(pwm5_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 514 | store_pwm_auto_point1_pwm, 4), |
| 515 | SENSOR_ATTR(fan6_input, 0444, show_fan_value, NULL, 5), |
| 516 | SENSOR_ATTR(fan6_div, 0644, show_fan_div, store_fan_div, 5), |
| 517 | SENSOR_ATTR(fan6_alarm, 0444, show_fan_alarm, NULL, 5), |
| 518 | SENSOR_ATTR(fan6_fault, 0444, show_fan_fault, NULL, 5), |
| 519 | SENSOR_ATTR(pwm6_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, |
| 520 | store_pwm_auto_point1_pwm, 5), |
| 521 | }; |
| 522 | |
| 523 | |
| 524 | /* |
| 525 | * Real code |
| 526 | */ |
| 527 | |
| 528 | static int fschmd_detect(struct i2c_adapter *adapter, int address, int kind) |
| 529 | { |
| 530 | struct i2c_client *client; |
| 531 | struct fschmd_data *data; |
| 532 | u8 revision; |
| 533 | const char * const names[5] = { "Poseidon", "Hermes", "Scylla", |
| 534 | "Heracles", "Heimdall" }; |
| 535 | const char * const client_names[5] = { "fscpos", "fscher", "fscscy", |
| 536 | "fschrc", "fschmd" }; |
| 537 | int i, err = 0; |
| 538 | |
| 539 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 540 | return 0; |
| 541 | |
| 542 | /* OK. For now, we presume we have a valid client. We now create the |
| 543 | * client structure, even though we cannot fill it completely yet. |
| 544 | * But it allows us to access i2c_smbus_read_byte_data. */ |
| 545 | if (!(data = kzalloc(sizeof(struct fschmd_data), GFP_KERNEL))) |
| 546 | return -ENOMEM; |
| 547 | |
| 548 | client = &data->client; |
| 549 | i2c_set_clientdata(client, data); |
| 550 | client->addr = address; |
| 551 | client->adapter = adapter; |
| 552 | client->driver = &fschmd_driver; |
| 553 | mutex_init(&data->update_lock); |
| 554 | |
| 555 | /* Detect & Identify the chip */ |
| 556 | if (kind <= 0) { |
| 557 | char id[4]; |
| 558 | |
| 559 | id[0] = i2c_smbus_read_byte_data(client, |
| 560 | FSCHMD_REG_IDENT_0); |
| 561 | id[1] = i2c_smbus_read_byte_data(client, |
| 562 | FSCHMD_REG_IDENT_1); |
| 563 | id[2] = i2c_smbus_read_byte_data(client, |
| 564 | FSCHMD_REG_IDENT_2); |
| 565 | id[3] = '\0'; |
| 566 | |
| 567 | if (!strcmp(id, "PEG")) |
| 568 | kind = fscpos; |
| 569 | else if (!strcmp(id, "HER")) |
| 570 | kind = fscher; |
| 571 | else if (!strcmp(id, "SCY")) |
| 572 | kind = fscscy; |
| 573 | else if (!strcmp(id, "HRC")) |
| 574 | kind = fschrc; |
| 575 | else if (!strcmp(id, "HMD")) |
| 576 | kind = fschmd; |
| 577 | else |
| 578 | goto exit_free; |
| 579 | } |
| 580 | |
| 581 | if (kind == fscpos) { |
| 582 | /* The Poseidon has hardwired temp limits, fill these |
| 583 | in for the alarm resetting code */ |
| 584 | data->temp_max[0] = 70 + 128; |
| 585 | data->temp_max[1] = 50 + 128; |
| 586 | data->temp_max[2] = 50 + 128; |
| 587 | } |
| 588 | |
| 589 | /* i2c kind goes from 1-5, we want from 0-4 to address arrays */ |
| 590 | data->kind = kind - 1; |
| 591 | strlcpy(client->name, client_names[data->kind], I2C_NAME_SIZE); |
| 592 | |
| 593 | /* Tell the I2C layer a new client has arrived */ |
| 594 | if ((err = i2c_attach_client(client))) |
| 595 | goto exit_free; |
| 596 | |
| 597 | for (i = 0; i < ARRAY_SIZE(fschmd_attr); i++) { |
| 598 | err = device_create_file(&client->dev, |
| 599 | &fschmd_attr[i].dev_attr); |
| 600 | if (err) |
| 601 | goto exit_detach; |
| 602 | } |
| 603 | |
| 604 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) { |
| 605 | /* Poseidon doesn't have TEMP_LIMIT registers */ |
| 606 | if (kind == fscpos && fschmd_temp_attr[i].dev_attr.show == |
| 607 | show_temp_max) |
| 608 | continue; |
| 609 | |
| 610 | err = device_create_file(&client->dev, |
| 611 | &fschmd_temp_attr[i].dev_attr); |
| 612 | if (err) |
| 613 | goto exit_detach; |
| 614 | } |
| 615 | |
| 616 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) { |
| 617 | /* Poseidon doesn't have a FAN_MIN register for its 3rd fan */ |
| 618 | if (kind == fscpos && |
| 619 | !strcmp(fschmd_fan_attr[i].dev_attr.attr.name, |
| 620 | "pwm3_auto_point1_pwm")) |
| 621 | continue; |
| 622 | |
| 623 | err = device_create_file(&client->dev, |
| 624 | &fschmd_fan_attr[i].dev_attr); |
| 625 | if (err) |
| 626 | goto exit_detach; |
| 627 | } |
| 628 | |
| 629 | data->hwmon_dev = hwmon_device_register(&client->dev); |
| 630 | if (IS_ERR(data->hwmon_dev)) { |
| 631 | err = PTR_ERR(data->hwmon_dev); |
| 632 | data->hwmon_dev = NULL; |
| 633 | goto exit_detach; |
| 634 | } |
| 635 | |
| 636 | revision = i2c_smbus_read_byte_data(client, FSCHMD_REG_REVISION); |
| 637 | printk(KERN_INFO FSCHMD_NAME ": Detected FSC %s chip, revision: %d\n", |
| 638 | names[data->kind], (int) revision); |
| 639 | |
| 640 | return 0; |
| 641 | |
| 642 | exit_detach: |
| 643 | fschmd_detach_client(client); /* will also free data for us */ |
| 644 | return err; |
| 645 | |
| 646 | exit_free: |
| 647 | kfree(data); |
| 648 | return err; |
| 649 | } |
| 650 | |
| 651 | static int fschmd_attach_adapter(struct i2c_adapter *adapter) |
| 652 | { |
| 653 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 654 | return 0; |
| 655 | return i2c_probe(adapter, &addr_data, fschmd_detect); |
| 656 | } |
| 657 | |
| 658 | static int fschmd_detach_client(struct i2c_client *client) |
| 659 | { |
| 660 | struct fschmd_data *data = i2c_get_clientdata(client); |
| 661 | int i, err; |
| 662 | |
| 663 | /* Check if registered in case we're called from fschmd_detect |
| 664 | to cleanup after an error */ |
| 665 | if (data->hwmon_dev) |
| 666 | hwmon_device_unregister(data->hwmon_dev); |
| 667 | |
| 668 | for (i = 0; i < ARRAY_SIZE(fschmd_attr); i++) |
| 669 | device_remove_file(&client->dev, &fschmd_attr[i].dev_attr); |
| 670 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) |
| 671 | device_remove_file(&client->dev, |
| 672 | &fschmd_temp_attr[i].dev_attr); |
| 673 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) |
| 674 | device_remove_file(&client->dev, |
| 675 | &fschmd_fan_attr[i].dev_attr); |
| 676 | |
| 677 | if ((err = i2c_detach_client(client))) |
| 678 | return err; |
| 679 | |
| 680 | kfree(data); |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | static struct fschmd_data *fschmd_update_device(struct device *dev) |
| 685 | { |
| 686 | struct i2c_client *client = to_i2c_client(dev); |
| 687 | struct fschmd_data *data = i2c_get_clientdata(client); |
| 688 | int i; |
| 689 | |
| 690 | mutex_lock(&data->update_lock); |
| 691 | |
| 692 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
| 693 | |
| 694 | for (i = 0; i < FSCHMD_NO_TEMP_SENSORS[data->kind]; i++) { |
| 695 | data->temp_act[i] = i2c_smbus_read_byte_data(client, |
| 696 | FSCHMD_REG_TEMP_ACT[data->kind][i]); |
| 697 | data->temp_status[i] = i2c_smbus_read_byte_data(client, |
| 698 | FSCHMD_REG_TEMP_STATE[data->kind][i]); |
| 699 | |
| 700 | /* The fscpos doesn't have TEMP_LIMIT registers */ |
| 701 | if (FSCHMD_REG_TEMP_LIMIT[data->kind][i]) |
| 702 | data->temp_max[i] = i2c_smbus_read_byte_data( |
| 703 | client, |
| 704 | FSCHMD_REG_TEMP_LIMIT[data->kind][i]); |
| 705 | |
| 706 | /* reset alarm if the alarm condition is gone, |
| 707 | the chip doesn't do this itself */ |
| 708 | if ((data->temp_status[i] & FSCHMD_TEMP_ALARM_MASK) == |
| 709 | FSCHMD_TEMP_ALARM_MASK && |
| 710 | data->temp_act[i] < data->temp_max[i]) |
| 711 | i2c_smbus_write_byte_data(client, |
| 712 | FSCHMD_REG_TEMP_STATE[data->kind][i], |
| 713 | FSCHMD_TEMP_ALERT_MASK); |
| 714 | } |
| 715 | |
| 716 | for (i = 0; i < FSCHMD_NO_FAN_SENSORS[data->kind]; i++) { |
| 717 | data->fan_act[i] = i2c_smbus_read_byte_data(client, |
| 718 | FSCHMD_REG_FAN_ACT[data->kind][i]); |
| 719 | data->fan_status[i] = i2c_smbus_read_byte_data(client, |
| 720 | FSCHMD_REG_FAN_STATE[data->kind][i]); |
| 721 | data->fan_ripple[i] = i2c_smbus_read_byte_data(client, |
| 722 | FSCHMD_REG_FAN_RIPPLE[data->kind][i]); |
| 723 | |
| 724 | /* The fscpos third fan doesn't have a fan_min */ |
| 725 | if (FSCHMD_REG_FAN_MIN[data->kind][i]) |
| 726 | data->fan_min[i] = i2c_smbus_read_byte_data( |
| 727 | client, |
| 728 | FSCHMD_REG_FAN_MIN[data->kind][i]); |
| 729 | |
| 730 | /* reset fan status if speed is back to > 0 */ |
| 731 | if ((data->fan_status[i] & FSCHMD_FAN_ALARM_MASK) && |
| 732 | data->fan_act[i]) |
| 733 | i2c_smbus_write_byte_data(client, |
| 734 | FSCHMD_REG_FAN_STATE[data->kind][i], |
| 735 | FSCHMD_FAN_ALARM_MASK); |
| 736 | } |
| 737 | |
| 738 | for (i = 0; i < 3; i++) |
| 739 | data->volt[i] = i2c_smbus_read_byte_data(client, |
| 740 | FSCHMD_REG_VOLT[i]); |
| 741 | |
| 742 | data->global_control = i2c_smbus_read_byte_data(client, |
| 743 | FSCHMD_REG_CONTROL); |
| 744 | |
| 745 | /* To be implemented in the future |
| 746 | data->watchdog[0] = i2c_smbus_read_byte_data(client, |
| 747 | FSCHMD_REG_WDOG_PRESET); |
| 748 | data->watchdog[1] = i2c_smbus_read_byte_data(client, |
| 749 | FSCHMD_REG_WDOG_STATE); |
| 750 | data->watchdog[2] = i2c_smbus_read_byte_data(client, |
| 751 | FSCHMD_REG_WDOG_CONTROL); */ |
| 752 | |
| 753 | data->last_updated = jiffies; |
| 754 | data->valid = 1; |
| 755 | } |
| 756 | |
| 757 | mutex_unlock(&data->update_lock); |
| 758 | |
| 759 | return data; |
| 760 | } |
| 761 | |
| 762 | static int __init fschmd_init(void) |
| 763 | { |
| 764 | return i2c_add_driver(&fschmd_driver); |
| 765 | } |
| 766 | |
| 767 | static void __exit fschmd_exit(void) |
| 768 | { |
| 769 | i2c_del_driver(&fschmd_driver); |
| 770 | } |
| 771 | |
| 772 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); |
| 773 | MODULE_DESCRIPTION("FSC Poseidon, Hermes, Scylla, Heracles and " |
| 774 | "Heimdall driver"); |
| 775 | MODULE_LICENSE("GPL"); |
| 776 | |
| 777 | module_init(fschmd_init); |
| 778 | module_exit(fschmd_exit); |