Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fscher.c - Part of lm_sensors, Linux kernel modules for hardware |
| 3 | * monitoring |
| 4 | * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * fujitsu siemens hermes chip, |
| 23 | * module based on fscpos.c |
| 24 | * Copyright (C) 2000 Hermann Jung <hej@odn.de> |
| 25 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| 26 | * and Philip Edelbrock <phil@netroedge.com> |
| 27 | */ |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/module.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/jiffies.h> |
| 33 | #include <linux/i2c.h> |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 34 | #include <linux/hwmon.h> |
| 35 | #include <linux/err.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | /* |
| 38 | * Addresses to scan |
| 39 | */ |
| 40 | |
| 41 | static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | /* |
| 44 | * Insmod parameters |
| 45 | */ |
| 46 | |
Jean Delvare | f4b5026 | 2005-07-31 21:49:03 +0200 | [diff] [blame] | 47 | I2C_CLIENT_INSMOD_1(fscher); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | /* |
| 50 | * The FSCHER registers |
| 51 | */ |
| 52 | |
| 53 | /* chip identification */ |
| 54 | #define FSCHER_REG_IDENT_0 0x00 |
| 55 | #define FSCHER_REG_IDENT_1 0x01 |
| 56 | #define FSCHER_REG_IDENT_2 0x02 |
| 57 | #define FSCHER_REG_REVISION 0x03 |
| 58 | |
| 59 | /* global control and status */ |
| 60 | #define FSCHER_REG_EVENT_STATE 0x04 |
| 61 | #define FSCHER_REG_CONTROL 0x05 |
| 62 | |
| 63 | /* watchdog */ |
| 64 | #define FSCHER_REG_WDOG_PRESET 0x28 |
| 65 | #define FSCHER_REG_WDOG_STATE 0x23 |
| 66 | #define FSCHER_REG_WDOG_CONTROL 0x21 |
| 67 | |
| 68 | /* fan 0 */ |
| 69 | #define FSCHER_REG_FAN0_MIN 0x55 |
| 70 | #define FSCHER_REG_FAN0_ACT 0x0e |
| 71 | #define FSCHER_REG_FAN0_STATE 0x0d |
| 72 | #define FSCHER_REG_FAN0_RIPPLE 0x0f |
| 73 | |
| 74 | /* fan 1 */ |
| 75 | #define FSCHER_REG_FAN1_MIN 0x65 |
| 76 | #define FSCHER_REG_FAN1_ACT 0x6b |
| 77 | #define FSCHER_REG_FAN1_STATE 0x62 |
| 78 | #define FSCHER_REG_FAN1_RIPPLE 0x6f |
| 79 | |
| 80 | /* fan 2 */ |
| 81 | #define FSCHER_REG_FAN2_MIN 0xb5 |
| 82 | #define FSCHER_REG_FAN2_ACT 0xbb |
| 83 | #define FSCHER_REG_FAN2_STATE 0xb2 |
| 84 | #define FSCHER_REG_FAN2_RIPPLE 0xbf |
| 85 | |
| 86 | /* voltage supervision */ |
| 87 | #define FSCHER_REG_VOLT_12 0x45 |
| 88 | #define FSCHER_REG_VOLT_5 0x42 |
| 89 | #define FSCHER_REG_VOLT_BATT 0x48 |
| 90 | |
| 91 | /* temperature 0 */ |
| 92 | #define FSCHER_REG_TEMP0_ACT 0x64 |
| 93 | #define FSCHER_REG_TEMP0_STATE 0x71 |
| 94 | |
| 95 | /* temperature 1 */ |
| 96 | #define FSCHER_REG_TEMP1_ACT 0x32 |
| 97 | #define FSCHER_REG_TEMP1_STATE 0x81 |
| 98 | |
| 99 | /* temperature 2 */ |
| 100 | #define FSCHER_REG_TEMP2_ACT 0x35 |
| 101 | #define FSCHER_REG_TEMP2_STATE 0x91 |
| 102 | |
| 103 | /* |
| 104 | * Functions declaration |
| 105 | */ |
| 106 | |
| 107 | static int fscher_attach_adapter(struct i2c_adapter *adapter); |
| 108 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind); |
| 109 | static int fscher_detach_client(struct i2c_client *client); |
| 110 | static struct fscher_data *fscher_update_device(struct device *dev); |
| 111 | static void fscher_init_client(struct i2c_client *client); |
| 112 | |
| 113 | static int fscher_read_value(struct i2c_client *client, u8 reg); |
| 114 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); |
| 115 | |
| 116 | /* |
| 117 | * Driver data (common to all clients) |
| 118 | */ |
| 119 | |
| 120 | static struct i2c_driver fscher_driver = { |
| 121 | .owner = THIS_MODULE, |
| 122 | .name = "fscher", |
| 123 | .id = I2C_DRIVERID_FSCHER, |
| 124 | .flags = I2C_DF_NOTIFY, |
| 125 | .attach_adapter = fscher_attach_adapter, |
| 126 | .detach_client = fscher_detach_client, |
| 127 | }; |
| 128 | |
| 129 | /* |
| 130 | * Client data (each client gets its own) |
| 131 | */ |
| 132 | |
| 133 | struct fscher_data { |
| 134 | struct i2c_client client; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 135 | struct class_device *class_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | struct semaphore update_lock; |
| 137 | char valid; /* zero until following fields are valid */ |
| 138 | unsigned long last_updated; /* in jiffies */ |
| 139 | |
| 140 | /* register values */ |
| 141 | u8 revision; /* revision of chip */ |
| 142 | u8 global_event; /* global event status */ |
| 143 | u8 global_control; /* global control register */ |
| 144 | u8 watchdog[3]; /* watchdog */ |
| 145 | u8 volt[3]; /* 12, 5, battery voltage */ |
| 146 | u8 temp_act[3]; /* temperature */ |
| 147 | u8 temp_status[3]; /* status of sensor */ |
| 148 | u8 fan_act[3]; /* fans revolutions per second */ |
| 149 | u8 fan_status[3]; /* fan status */ |
| 150 | u8 fan_min[3]; /* fan min value for rps */ |
| 151 | u8 fan_ripple[3]; /* divider for rps */ |
| 152 | }; |
| 153 | |
| 154 | /* |
| 155 | * Sysfs stuff |
| 156 | */ |
| 157 | |
| 158 | #define sysfs_r(kind, sub, offset, reg) \ |
| 159 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ |
Yani Ioannou | 30f7429 | 2005-05-17 06:41:35 -0400 | [diff] [blame] | 160 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
| 161 | static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | { \ |
| 163 | struct fscher_data *data = fscher_update_device(dev); \ |
| 164 | return show_##kind##sub(data, buf, (offset)); \ |
| 165 | } |
| 166 | |
| 167 | #define sysfs_w(kind, sub, offset, reg) \ |
| 168 | static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ |
Yani Ioannou | 30f7429 | 2005-05-17 06:41:35 -0400 | [diff] [blame] | 169 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
| 170 | static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | { \ |
| 172 | struct i2c_client *client = to_i2c_client(dev); \ |
| 173 | struct fscher_data *data = i2c_get_clientdata(client); \ |
| 174 | return set_##kind##sub(client, data, buf, count, (offset), reg); \ |
| 175 | } |
| 176 | |
| 177 | #define sysfs_rw_n(kind, sub, offset, reg) \ |
| 178 | sysfs_r(kind, sub, offset, reg) \ |
| 179 | sysfs_w(kind, sub, offset, reg) \ |
| 180 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub); |
| 181 | |
| 182 | #define sysfs_rw(kind, sub, reg) \ |
| 183 | sysfs_r(kind, sub, 0, reg) \ |
| 184 | sysfs_w(kind, sub, 0, reg) \ |
| 185 | static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub); |
| 186 | |
| 187 | #define sysfs_ro_n(kind, sub, offset, reg) \ |
| 188 | sysfs_r(kind, sub, offset, reg) \ |
| 189 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); |
| 190 | |
| 191 | #define sysfs_ro(kind, sub, reg) \ |
| 192 | sysfs_r(kind, sub, 0, reg) \ |
| 193 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); |
| 194 | |
| 195 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ |
| 196 | sysfs_rw_n(pwm, , offset, reg_min) \ |
| 197 | sysfs_rw_n(fan, _status, offset, reg_status) \ |
| 198 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ |
| 199 | sysfs_ro_n(fan, _input , offset, reg_act) |
| 200 | |
| 201 | #define sysfs_temp(offset, reg_status, reg_act) \ |
| 202 | sysfs_rw_n(temp, _status, offset, reg_status) \ |
| 203 | sysfs_ro_n(temp, _input , offset, reg_act) |
| 204 | |
| 205 | #define sysfs_in(offset, reg_act) \ |
| 206 | sysfs_ro_n(in, _input, offset, reg_act) |
| 207 | |
| 208 | #define sysfs_revision(reg_revision) \ |
| 209 | sysfs_ro(revision, , reg_revision) |
| 210 | |
| 211 | #define sysfs_alarms(reg_events) \ |
| 212 | sysfs_ro(alarms, , reg_events) |
| 213 | |
| 214 | #define sysfs_control(reg_control) \ |
| 215 | sysfs_rw(control, , reg_control) |
| 216 | |
| 217 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ |
| 218 | sysfs_rw(watchdog, _control, reg_control) \ |
| 219 | sysfs_rw(watchdog, _status , reg_status) \ |
| 220 | sysfs_rw(watchdog, _preset , reg_preset) |
| 221 | |
| 222 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, |
| 223 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) |
| 224 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, |
| 225 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) |
| 226 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, |
| 227 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) |
| 228 | |
| 229 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) |
| 230 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) |
| 231 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) |
| 232 | |
| 233 | sysfs_in(0, FSCHER_REG_VOLT_12) |
| 234 | sysfs_in(1, FSCHER_REG_VOLT_5) |
| 235 | sysfs_in(2, FSCHER_REG_VOLT_BATT) |
| 236 | |
| 237 | sysfs_revision(FSCHER_REG_REVISION) |
| 238 | sysfs_alarms(FSCHER_REG_EVENTS) |
| 239 | sysfs_control(FSCHER_REG_CONTROL) |
| 240 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) |
| 241 | |
| 242 | #define device_create_file_fan(client, offset) \ |
| 243 | do { \ |
| 244 | device_create_file(&client->dev, &dev_attr_fan##offset##_status); \ |
| 245 | device_create_file(&client->dev, &dev_attr_pwm##offset); \ |
| 246 | device_create_file(&client->dev, &dev_attr_fan##offset##_div); \ |
| 247 | device_create_file(&client->dev, &dev_attr_fan##offset##_input); \ |
| 248 | } while (0) |
| 249 | |
| 250 | #define device_create_file_temp(client, offset) \ |
| 251 | do { \ |
| 252 | device_create_file(&client->dev, &dev_attr_temp##offset##_status); \ |
| 253 | device_create_file(&client->dev, &dev_attr_temp##offset##_input); \ |
| 254 | } while (0) |
| 255 | |
| 256 | #define device_create_file_in(client, offset) \ |
| 257 | do { \ |
| 258 | device_create_file(&client->dev, &dev_attr_in##offset##_input); \ |
| 259 | } while (0) |
| 260 | |
| 261 | #define device_create_file_revision(client) \ |
| 262 | do { \ |
| 263 | device_create_file(&client->dev, &dev_attr_revision); \ |
| 264 | } while (0) |
| 265 | |
| 266 | #define device_create_file_alarms(client) \ |
| 267 | do { \ |
| 268 | device_create_file(&client->dev, &dev_attr_alarms); \ |
| 269 | } while (0) |
| 270 | |
| 271 | #define device_create_file_control(client) \ |
| 272 | do { \ |
| 273 | device_create_file(&client->dev, &dev_attr_control); \ |
| 274 | } while (0) |
| 275 | |
| 276 | #define device_create_file_watchdog(client) \ |
| 277 | do { \ |
| 278 | device_create_file(&client->dev, &dev_attr_watchdog_status); \ |
| 279 | device_create_file(&client->dev, &dev_attr_watchdog_control); \ |
| 280 | device_create_file(&client->dev, &dev_attr_watchdog_preset); \ |
| 281 | } while (0) |
| 282 | |
| 283 | /* |
| 284 | * Real code |
| 285 | */ |
| 286 | |
| 287 | static int fscher_attach_adapter(struct i2c_adapter *adapter) |
| 288 | { |
| 289 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 290 | return 0; |
Jean Delvare | 2ed2dc3 | 2005-07-31 21:42:02 +0200 | [diff] [blame] | 291 | return i2c_probe(adapter, &addr_data, fscher_detect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind) |
| 295 | { |
| 296 | struct i2c_client *new_client; |
| 297 | struct fscher_data *data; |
| 298 | int err = 0; |
| 299 | |
| 300 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 301 | goto exit; |
| 302 | |
| 303 | /* OK. For now, we presume we have a valid client. We now create the |
| 304 | * client structure, even though we cannot fill it completely yet. |
| 305 | * But it allows us to access i2c_smbus_read_byte_data. */ |
Deepak Saxena | ba9c2e8 | 2005-10-17 23:08:32 +0200 | [diff] [blame^] | 306 | if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | err = -ENOMEM; |
| 308 | goto exit; |
| 309 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
| 311 | /* The common I2C client data is placed right before the |
| 312 | * Hermes-specific data. */ |
| 313 | new_client = &data->client; |
| 314 | i2c_set_clientdata(new_client, data); |
| 315 | new_client->addr = address; |
| 316 | new_client->adapter = adapter; |
| 317 | new_client->driver = &fscher_driver; |
| 318 | new_client->flags = 0; |
| 319 | |
| 320 | /* Do the remaining detection unless force or force_fscher parameter */ |
| 321 | if (kind < 0) { |
| 322 | if ((i2c_smbus_read_byte_data(new_client, |
| 323 | FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ |
| 324 | || (i2c_smbus_read_byte_data(new_client, |
| 325 | FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ |
| 326 | || (i2c_smbus_read_byte_data(new_client, |
| 327 | FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ |
| 328 | goto exit_free; |
| 329 | } |
| 330 | |
| 331 | /* Fill in the remaining client fields and put it into the |
| 332 | * global list */ |
| 333 | strlcpy(new_client->name, "fscher", I2C_NAME_SIZE); |
| 334 | data->valid = 0; |
| 335 | init_MUTEX(&data->update_lock); |
| 336 | |
| 337 | /* Tell the I2C layer a new client has arrived */ |
| 338 | if ((err = i2c_attach_client(new_client))) |
| 339 | goto exit_free; |
| 340 | |
| 341 | fscher_init_client(new_client); |
| 342 | |
| 343 | /* Register sysfs hooks */ |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 344 | data->class_dev = hwmon_device_register(&new_client->dev); |
| 345 | if (IS_ERR(data->class_dev)) { |
| 346 | err = PTR_ERR(data->class_dev); |
| 347 | goto exit_detach; |
| 348 | } |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | device_create_file_revision(new_client); |
| 351 | device_create_file_alarms(new_client); |
| 352 | device_create_file_control(new_client); |
| 353 | device_create_file_watchdog(new_client); |
| 354 | |
| 355 | device_create_file_in(new_client, 0); |
| 356 | device_create_file_in(new_client, 1); |
| 357 | device_create_file_in(new_client, 2); |
| 358 | |
| 359 | device_create_file_fan(new_client, 1); |
| 360 | device_create_file_fan(new_client, 2); |
| 361 | device_create_file_fan(new_client, 3); |
| 362 | |
| 363 | device_create_file_temp(new_client, 1); |
| 364 | device_create_file_temp(new_client, 2); |
| 365 | device_create_file_temp(new_client, 3); |
| 366 | |
| 367 | return 0; |
| 368 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 369 | exit_detach: |
| 370 | i2c_detach_client(new_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | exit_free: |
| 372 | kfree(data); |
| 373 | exit: |
| 374 | return err; |
| 375 | } |
| 376 | |
| 377 | static int fscher_detach_client(struct i2c_client *client) |
| 378 | { |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 379 | struct fscher_data *data = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | int err; |
| 381 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 382 | hwmon_device_unregister(data->class_dev); |
| 383 | |
Jean Delvare | 7bef559 | 2005-07-27 22:14:49 +0200 | [diff] [blame] | 384 | if ((err = i2c_detach_client(client))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 387 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static int fscher_read_value(struct i2c_client *client, u8 reg) |
| 392 | { |
| 393 | dev_dbg(&client->dev, "read reg 0x%02x\n", reg); |
| 394 | |
| 395 | return i2c_smbus_read_byte_data(client, reg); |
| 396 | } |
| 397 | |
| 398 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value) |
| 399 | { |
| 400 | dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n", |
| 401 | reg, value); |
| 402 | |
| 403 | return i2c_smbus_write_byte_data(client, reg, value); |
| 404 | } |
| 405 | |
| 406 | /* Called when we have found a new FSC Hermes. */ |
| 407 | static void fscher_init_client(struct i2c_client *client) |
| 408 | { |
| 409 | struct fscher_data *data = i2c_get_clientdata(client); |
| 410 | |
| 411 | /* Read revision from chip */ |
| 412 | data->revision = fscher_read_value(client, FSCHER_REG_REVISION); |
| 413 | } |
| 414 | |
| 415 | static struct fscher_data *fscher_update_device(struct device *dev) |
| 416 | { |
| 417 | struct i2c_client *client = to_i2c_client(dev); |
| 418 | struct fscher_data *data = i2c_get_clientdata(client); |
| 419 | |
| 420 | down(&data->update_lock); |
| 421 | |
| 422 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
| 423 | |
| 424 | dev_dbg(&client->dev, "Starting fscher update\n"); |
| 425 | |
| 426 | data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); |
| 427 | data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); |
| 428 | data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); |
| 429 | data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); |
| 430 | data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); |
| 431 | data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); |
| 432 | |
| 433 | data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); |
| 434 | data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); |
| 435 | data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); |
| 436 | |
| 437 | data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); |
| 438 | data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); |
| 439 | data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); |
| 440 | data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); |
| 441 | data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); |
| 442 | data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); |
| 443 | data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); |
| 444 | data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); |
| 445 | data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); |
| 446 | data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); |
| 447 | data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); |
| 448 | data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); |
| 449 | |
| 450 | data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); |
| 451 | data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); |
| 452 | data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); |
| 453 | |
| 454 | data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); |
| 455 | |
| 456 | data->last_updated = jiffies; |
| 457 | data->valid = 1; |
| 458 | } |
| 459 | |
| 460 | up(&data->update_lock); |
| 461 | |
| 462 | return data; |
| 463 | } |
| 464 | |
| 465 | |
| 466 | |
| 467 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) |
| 468 | |
| 469 | static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, |
| 470 | const char *buf, size_t count, int nr, int reg) |
| 471 | { |
| 472 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| 473 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; |
| 474 | |
| 475 | down(&data->update_lock); |
| 476 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; |
| 477 | fscher_write_value(client, reg, v); |
| 478 | up(&data->update_lock); |
| 479 | return count; |
| 480 | } |
| 481 | |
| 482 | static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) |
| 483 | { |
| 484 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| 485 | return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); |
| 486 | } |
| 487 | |
| 488 | static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, |
| 489 | const char *buf, size_t count, int nr, int reg) |
| 490 | { |
| 491 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 492 | |
| 493 | down(&data->update_lock); |
| 494 | data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; |
| 495 | fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
| 496 | up(&data->update_lock); |
| 497 | return count; |
| 498 | } |
| 499 | |
| 500 | static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) |
| 501 | { |
| 502 | return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
| 503 | } |
| 504 | |
| 505 | static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data, |
| 506 | const char *buf, size_t count, int nr, int reg) |
| 507 | { |
| 508 | /* supported values: 2, 4, 8 */ |
| 509 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 510 | |
| 511 | switch (v) { |
| 512 | case 2: v = 1; break; |
| 513 | case 4: v = 2; break; |
| 514 | case 8: v = 3; break; |
| 515 | default: |
| 516 | dev_err(&client->dev, "fan_div value %ld not " |
| 517 | "supported. Choose one of 2, 4 or 8!\n", v); |
| 518 | return -EINVAL; |
| 519 | } |
| 520 | |
| 521 | down(&data->update_lock); |
| 522 | |
| 523 | /* bits 2..7 reserved => mask with 0x03 */ |
| 524 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; |
| 525 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; |
| 526 | |
| 527 | fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); |
| 528 | up(&data->update_lock); |
| 529 | return count; |
| 530 | } |
| 531 | |
| 532 | static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) |
| 533 | { |
| 534 | /* bits 2..7 reserved => mask with 0x03 */ |
| 535 | return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); |
| 536 | } |
| 537 | |
| 538 | #define RPM_FROM_REG(val) (val*60) |
| 539 | |
| 540 | static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) |
| 541 | { |
| 542 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); |
| 543 | } |
| 544 | |
| 545 | |
| 546 | |
| 547 | #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) |
| 548 | |
| 549 | static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, |
| 550 | const char *buf, size_t count, int nr, int reg) |
| 551 | { |
| 552 | /* bits 2..7 reserved, 0 read only => mask with 0x02 */ |
| 553 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| 554 | |
| 555 | down(&data->update_lock); |
| 556 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; |
| 557 | fscher_write_value(client, reg, v); |
| 558 | up(&data->update_lock); |
| 559 | return count; |
| 560 | } |
| 561 | |
| 562 | static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) |
| 563 | { |
| 564 | /* bits 2..7 reserved => mask with 0x03 */ |
| 565 | return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); |
| 566 | } |
| 567 | |
| 568 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) |
| 569 | |
| 570 | static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) |
| 571 | { |
| 572 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); |
| 573 | } |
| 574 | |
| 575 | /* |
| 576 | * The final conversion is specified in sensors.conf, as it depends on |
| 577 | * mainboard specific values. We export the registers contents as |
| 578 | * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much |
| 579 | * sense per se, but it minimizes the conversions count and keeps the |
| 580 | * values within a usual range. |
| 581 | */ |
| 582 | #define VOLT_FROM_REG(val) ((val) * 10) |
| 583 | |
| 584 | static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) |
| 585 | { |
| 586 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); |
| 587 | } |
| 588 | |
| 589 | |
| 590 | |
| 591 | static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) |
| 592 | { |
| 593 | return sprintf(buf, "%u\n", data->revision); |
| 594 | } |
| 595 | |
| 596 | |
| 597 | |
| 598 | static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) |
| 599 | { |
| 600 | /* bits 2, 5..6 reserved => mask with 0x9b */ |
| 601 | return sprintf(buf, "%u\n", data->global_event & 0x9b); |
| 602 | } |
| 603 | |
| 604 | |
| 605 | |
| 606 | static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, |
| 607 | const char *buf, size_t count, int nr, int reg) |
| 608 | { |
| 609 | /* bits 1..7 reserved => mask with 0x01 */ |
| 610 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; |
| 611 | |
| 612 | down(&data->update_lock); |
| 613 | data->global_control &= ~v; |
| 614 | fscher_write_value(client, reg, v); |
| 615 | up(&data->update_lock); |
| 616 | return count; |
| 617 | } |
| 618 | |
| 619 | static ssize_t show_control(struct fscher_data *data, char *buf, int nr) |
| 620 | { |
| 621 | /* bits 1..7 reserved => mask with 0x01 */ |
| 622 | return sprintf(buf, "%u\n", data->global_control & 0x01); |
| 623 | } |
| 624 | |
| 625 | |
| 626 | |
| 627 | static ssize_t set_watchdog_control(struct i2c_client *client, struct |
| 628 | fscher_data *data, const char *buf, size_t count, |
| 629 | int nr, int reg) |
| 630 | { |
| 631 | /* bits 0..3 reserved => mask with 0xf0 */ |
| 632 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; |
| 633 | |
| 634 | down(&data->update_lock); |
| 635 | data->watchdog[2] &= ~0xf0; |
| 636 | data->watchdog[2] |= v; |
| 637 | fscher_write_value(client, reg, data->watchdog[2]); |
| 638 | up(&data->update_lock); |
| 639 | return count; |
| 640 | } |
| 641 | |
| 642 | static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) |
| 643 | { |
| 644 | /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ |
| 645 | return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); |
| 646 | } |
| 647 | |
| 648 | static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, |
| 649 | const char *buf, size_t count, int nr, int reg) |
| 650 | { |
| 651 | /* bits 0, 2..7 reserved => mask with 0x02 */ |
| 652 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| 653 | |
| 654 | down(&data->update_lock); |
| 655 | data->watchdog[1] &= ~v; |
| 656 | fscher_write_value(client, reg, v); |
| 657 | up(&data->update_lock); |
| 658 | return count; |
| 659 | } |
| 660 | |
| 661 | static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) |
| 662 | { |
| 663 | /* bits 0, 2..7 reserved => mask with 0x02 */ |
| 664 | return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); |
| 665 | } |
| 666 | |
| 667 | static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, |
| 668 | const char *buf, size_t count, int nr, int reg) |
| 669 | { |
| 670 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; |
| 671 | |
| 672 | down(&data->update_lock); |
| 673 | data->watchdog[0] = v; |
| 674 | fscher_write_value(client, reg, data->watchdog[0]); |
| 675 | up(&data->update_lock); |
| 676 | return count; |
| 677 | } |
| 678 | |
| 679 | static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) |
| 680 | { |
| 681 | return sprintf(buf, "%u\n", data->watchdog[0]); |
| 682 | } |
| 683 | |
| 684 | static int __init sensors_fscher_init(void) |
| 685 | { |
| 686 | return i2c_add_driver(&fscher_driver); |
| 687 | } |
| 688 | |
| 689 | static void __exit sensors_fscher_exit(void) |
| 690 | { |
| 691 | i2c_del_driver(&fscher_driver); |
| 692 | } |
| 693 | |
| 694 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); |
| 695 | MODULE_DESCRIPTION("FSC Hermes driver"); |
| 696 | MODULE_LICENSE("GPL"); |
| 697 | |
| 698 | module_init(sensors_fscher_init); |
| 699 | module_exit(sensors_fscher_exit); |