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> |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 36 | #include <linux/mutex.h> |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 37 | #include <linux/sysfs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | /* |
| 40 | * Addresses to scan |
| 41 | */ |
| 42 | |
Mark M. Hoffman | 25e9c86 | 2008-02-17 22:28:03 -0500 | [diff] [blame^] | 43 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * Insmod parameters |
| 47 | */ |
| 48 | |
Jean Delvare | f4b5026 | 2005-07-31 21:49:03 +0200 | [diff] [blame] | 49 | I2C_CLIENT_INSMOD_1(fscher); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | /* |
| 52 | * The FSCHER registers |
| 53 | */ |
| 54 | |
| 55 | /* chip identification */ |
| 56 | #define FSCHER_REG_IDENT_0 0x00 |
| 57 | #define FSCHER_REG_IDENT_1 0x01 |
| 58 | #define FSCHER_REG_IDENT_2 0x02 |
| 59 | #define FSCHER_REG_REVISION 0x03 |
| 60 | |
| 61 | /* global control and status */ |
| 62 | #define FSCHER_REG_EVENT_STATE 0x04 |
| 63 | #define FSCHER_REG_CONTROL 0x05 |
| 64 | |
| 65 | /* watchdog */ |
| 66 | #define FSCHER_REG_WDOG_PRESET 0x28 |
| 67 | #define FSCHER_REG_WDOG_STATE 0x23 |
| 68 | #define FSCHER_REG_WDOG_CONTROL 0x21 |
| 69 | |
| 70 | /* fan 0 */ |
| 71 | #define FSCHER_REG_FAN0_MIN 0x55 |
| 72 | #define FSCHER_REG_FAN0_ACT 0x0e |
| 73 | #define FSCHER_REG_FAN0_STATE 0x0d |
| 74 | #define FSCHER_REG_FAN0_RIPPLE 0x0f |
| 75 | |
| 76 | /* fan 1 */ |
| 77 | #define FSCHER_REG_FAN1_MIN 0x65 |
| 78 | #define FSCHER_REG_FAN1_ACT 0x6b |
| 79 | #define FSCHER_REG_FAN1_STATE 0x62 |
| 80 | #define FSCHER_REG_FAN1_RIPPLE 0x6f |
| 81 | |
| 82 | /* fan 2 */ |
| 83 | #define FSCHER_REG_FAN2_MIN 0xb5 |
| 84 | #define FSCHER_REG_FAN2_ACT 0xbb |
| 85 | #define FSCHER_REG_FAN2_STATE 0xb2 |
| 86 | #define FSCHER_REG_FAN2_RIPPLE 0xbf |
| 87 | |
| 88 | /* voltage supervision */ |
| 89 | #define FSCHER_REG_VOLT_12 0x45 |
| 90 | #define FSCHER_REG_VOLT_5 0x42 |
| 91 | #define FSCHER_REG_VOLT_BATT 0x48 |
| 92 | |
| 93 | /* temperature 0 */ |
| 94 | #define FSCHER_REG_TEMP0_ACT 0x64 |
| 95 | #define FSCHER_REG_TEMP0_STATE 0x71 |
| 96 | |
| 97 | /* temperature 1 */ |
| 98 | #define FSCHER_REG_TEMP1_ACT 0x32 |
| 99 | #define FSCHER_REG_TEMP1_STATE 0x81 |
| 100 | |
| 101 | /* temperature 2 */ |
| 102 | #define FSCHER_REG_TEMP2_ACT 0x35 |
| 103 | #define FSCHER_REG_TEMP2_STATE 0x91 |
| 104 | |
| 105 | /* |
| 106 | * Functions declaration |
| 107 | */ |
| 108 | |
| 109 | static int fscher_attach_adapter(struct i2c_adapter *adapter); |
| 110 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind); |
| 111 | static int fscher_detach_client(struct i2c_client *client); |
| 112 | static struct fscher_data *fscher_update_device(struct device *dev); |
| 113 | static void fscher_init_client(struct i2c_client *client); |
| 114 | |
| 115 | static int fscher_read_value(struct i2c_client *client, u8 reg); |
| 116 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); |
| 117 | |
| 118 | /* |
| 119 | * Driver data (common to all clients) |
| 120 | */ |
| 121 | |
| 122 | static struct i2c_driver fscher_driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 123 | .driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 124 | .name = "fscher", |
| 125 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | .attach_adapter = fscher_attach_adapter, |
| 127 | .detach_client = fscher_detach_client, |
| 128 | }; |
| 129 | |
| 130 | /* |
| 131 | * Client data (each client gets its own) |
| 132 | */ |
| 133 | |
| 134 | struct fscher_data { |
| 135 | struct i2c_client client; |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 136 | struct device *hwmon_dev; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 137 | struct mutex update_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | char valid; /* zero until following fields are valid */ |
| 139 | unsigned long last_updated; /* in jiffies */ |
| 140 | |
| 141 | /* register values */ |
| 142 | u8 revision; /* revision of chip */ |
| 143 | u8 global_event; /* global event status */ |
| 144 | u8 global_control; /* global control register */ |
| 145 | u8 watchdog[3]; /* watchdog */ |
| 146 | u8 volt[3]; /* 12, 5, battery voltage */ |
| 147 | u8 temp_act[3]; /* temperature */ |
| 148 | u8 temp_status[3]; /* status of sensor */ |
| 149 | u8 fan_act[3]; /* fans revolutions per second */ |
| 150 | u8 fan_status[3]; /* fan status */ |
| 151 | u8 fan_min[3]; /* fan min value for rps */ |
| 152 | u8 fan_ripple[3]; /* divider for rps */ |
| 153 | }; |
| 154 | |
| 155 | /* |
| 156 | * Sysfs stuff |
| 157 | */ |
| 158 | |
| 159 | #define sysfs_r(kind, sub, offset, reg) \ |
| 160 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ |
Yani Ioannou | 30f7429 | 2005-05-17 06:41:35 -0400 | [diff] [blame] | 161 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
| 162 | 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] | 163 | { \ |
| 164 | struct fscher_data *data = fscher_update_device(dev); \ |
| 165 | return show_##kind##sub(data, buf, (offset)); \ |
| 166 | } |
| 167 | |
| 168 | #define sysfs_w(kind, sub, offset, reg) \ |
| 169 | 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] | 170 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
| 171 | 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] | 172 | { \ |
| 173 | struct i2c_client *client = to_i2c_client(dev); \ |
| 174 | struct fscher_data *data = i2c_get_clientdata(client); \ |
| 175 | return set_##kind##sub(client, data, buf, count, (offset), reg); \ |
| 176 | } |
| 177 | |
| 178 | #define sysfs_rw_n(kind, sub, offset, reg) \ |
| 179 | sysfs_r(kind, sub, offset, reg) \ |
| 180 | sysfs_w(kind, sub, offset, reg) \ |
| 181 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub); |
| 182 | |
| 183 | #define sysfs_rw(kind, sub, reg) \ |
| 184 | sysfs_r(kind, sub, 0, reg) \ |
| 185 | sysfs_w(kind, sub, 0, reg) \ |
| 186 | static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub); |
| 187 | |
| 188 | #define sysfs_ro_n(kind, sub, offset, reg) \ |
| 189 | sysfs_r(kind, sub, offset, reg) \ |
| 190 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); |
| 191 | |
| 192 | #define sysfs_ro(kind, sub, reg) \ |
| 193 | sysfs_r(kind, sub, 0, reg) \ |
| 194 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); |
| 195 | |
| 196 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ |
| 197 | sysfs_rw_n(pwm, , offset, reg_min) \ |
| 198 | sysfs_rw_n(fan, _status, offset, reg_status) \ |
| 199 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ |
| 200 | sysfs_ro_n(fan, _input , offset, reg_act) |
| 201 | |
| 202 | #define sysfs_temp(offset, reg_status, reg_act) \ |
| 203 | sysfs_rw_n(temp, _status, offset, reg_status) \ |
| 204 | sysfs_ro_n(temp, _input , offset, reg_act) |
| 205 | |
| 206 | #define sysfs_in(offset, reg_act) \ |
| 207 | sysfs_ro_n(in, _input, offset, reg_act) |
| 208 | |
| 209 | #define sysfs_revision(reg_revision) \ |
| 210 | sysfs_ro(revision, , reg_revision) |
| 211 | |
| 212 | #define sysfs_alarms(reg_events) \ |
| 213 | sysfs_ro(alarms, , reg_events) |
| 214 | |
| 215 | #define sysfs_control(reg_control) \ |
| 216 | sysfs_rw(control, , reg_control) |
| 217 | |
| 218 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ |
| 219 | sysfs_rw(watchdog, _control, reg_control) \ |
| 220 | sysfs_rw(watchdog, _status , reg_status) \ |
| 221 | sysfs_rw(watchdog, _preset , reg_preset) |
| 222 | |
| 223 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, |
| 224 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) |
| 225 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, |
| 226 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) |
| 227 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, |
| 228 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) |
| 229 | |
| 230 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) |
| 231 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) |
| 232 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) |
| 233 | |
| 234 | sysfs_in(0, FSCHER_REG_VOLT_12) |
| 235 | sysfs_in(1, FSCHER_REG_VOLT_5) |
| 236 | sysfs_in(2, FSCHER_REG_VOLT_BATT) |
| 237 | |
| 238 | sysfs_revision(FSCHER_REG_REVISION) |
| 239 | sysfs_alarms(FSCHER_REG_EVENTS) |
| 240 | sysfs_control(FSCHER_REG_CONTROL) |
| 241 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) |
| 242 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 243 | static struct attribute *fscher_attributes[] = { |
| 244 | &dev_attr_revision.attr, |
| 245 | &dev_attr_alarms.attr, |
| 246 | &dev_attr_control.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 248 | &dev_attr_watchdog_status.attr, |
| 249 | &dev_attr_watchdog_control.attr, |
| 250 | &dev_attr_watchdog_preset.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 252 | &dev_attr_in0_input.attr, |
| 253 | &dev_attr_in1_input.attr, |
| 254 | &dev_attr_in2_input.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 256 | &dev_attr_fan1_status.attr, |
| 257 | &dev_attr_fan1_div.attr, |
| 258 | &dev_attr_fan1_input.attr, |
| 259 | &dev_attr_pwm1.attr, |
| 260 | &dev_attr_fan2_status.attr, |
| 261 | &dev_attr_fan2_div.attr, |
| 262 | &dev_attr_fan2_input.attr, |
| 263 | &dev_attr_pwm2.attr, |
| 264 | &dev_attr_fan3_status.attr, |
| 265 | &dev_attr_fan3_div.attr, |
| 266 | &dev_attr_fan3_input.attr, |
| 267 | &dev_attr_pwm3.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 269 | &dev_attr_temp1_status.attr, |
| 270 | &dev_attr_temp1_input.attr, |
| 271 | &dev_attr_temp2_status.attr, |
| 272 | &dev_attr_temp2_input.attr, |
| 273 | &dev_attr_temp3_status.attr, |
| 274 | &dev_attr_temp3_input.attr, |
| 275 | NULL |
| 276 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 278 | static const struct attribute_group fscher_group = { |
| 279 | .attrs = fscher_attributes, |
| 280 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | /* |
| 283 | * Real code |
| 284 | */ |
| 285 | |
| 286 | static int fscher_attach_adapter(struct i2c_adapter *adapter) |
| 287 | { |
| 288 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 289 | return 0; |
Jean Delvare | 2ed2dc3 | 2005-07-31 21:42:02 +0200 | [diff] [blame] | 290 | return i2c_probe(adapter, &addr_data, fscher_detect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind) |
| 294 | { |
| 295 | struct i2c_client *new_client; |
| 296 | struct fscher_data *data; |
| 297 | int err = 0; |
| 298 | |
| 299 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 300 | goto exit; |
| 301 | |
| 302 | /* OK. For now, we presume we have a valid client. We now create the |
| 303 | * client structure, even though we cannot fill it completely yet. |
| 304 | * But it allows us to access i2c_smbus_read_byte_data. */ |
Deepak Saxena | ba9c2e8 | 2005-10-17 23:08:32 +0200 | [diff] [blame] | 305 | if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | err = -ENOMEM; |
| 307 | goto exit; |
| 308 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
| 310 | /* The common I2C client data is placed right before the |
| 311 | * Hermes-specific data. */ |
| 312 | new_client = &data->client; |
| 313 | i2c_set_clientdata(new_client, data); |
| 314 | new_client->addr = address; |
| 315 | new_client->adapter = adapter; |
| 316 | new_client->driver = &fscher_driver; |
| 317 | new_client->flags = 0; |
| 318 | |
| 319 | /* Do the remaining detection unless force or force_fscher parameter */ |
| 320 | if (kind < 0) { |
| 321 | if ((i2c_smbus_read_byte_data(new_client, |
| 322 | FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ |
| 323 | || (i2c_smbus_read_byte_data(new_client, |
| 324 | FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ |
| 325 | || (i2c_smbus_read_byte_data(new_client, |
| 326 | FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ |
| 327 | goto exit_free; |
| 328 | } |
| 329 | |
| 330 | /* Fill in the remaining client fields and put it into the |
| 331 | * global list */ |
| 332 | strlcpy(new_client->name, "fscher", I2C_NAME_SIZE); |
| 333 | data->valid = 0; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 334 | mutex_init(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | /* Tell the I2C layer a new client has arrived */ |
| 337 | if ((err = i2c_attach_client(new_client))) |
| 338 | goto exit_free; |
| 339 | |
| 340 | fscher_init_client(new_client); |
| 341 | |
| 342 | /* Register sysfs hooks */ |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 343 | if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group))) |
| 344 | goto exit_detach; |
| 345 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 346 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
| 347 | if (IS_ERR(data->hwmon_dev)) { |
| 348 | err = PTR_ERR(data->hwmon_dev); |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 349 | goto exit_remove_files; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 350 | } |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | return 0; |
| 353 | |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 354 | exit_remove_files: |
| 355 | sysfs_remove_group(&new_client->dev.kobj, &fscher_group); |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 356 | exit_detach: |
| 357 | i2c_detach_client(new_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | exit_free: |
| 359 | kfree(data); |
| 360 | exit: |
| 361 | return err; |
| 362 | } |
| 363 | |
| 364 | static int fscher_detach_client(struct i2c_client *client) |
| 365 | { |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 366 | struct fscher_data *data = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | int err; |
| 368 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 369 | hwmon_device_unregister(data->hwmon_dev); |
Jean Delvare | 87808be | 2006-09-24 21:17:13 +0200 | [diff] [blame] | 370 | sysfs_remove_group(&client->dev.kobj, &fscher_group); |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 371 | |
Jean Delvare | 7bef559 | 2005-07-27 22:14:49 +0200 | [diff] [blame] | 372 | if ((err = i2c_detach_client(client))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 375 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | static int fscher_read_value(struct i2c_client *client, u8 reg) |
| 380 | { |
| 381 | dev_dbg(&client->dev, "read reg 0x%02x\n", reg); |
| 382 | |
| 383 | return i2c_smbus_read_byte_data(client, reg); |
| 384 | } |
| 385 | |
| 386 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value) |
| 387 | { |
| 388 | dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n", |
| 389 | reg, value); |
| 390 | |
| 391 | return i2c_smbus_write_byte_data(client, reg, value); |
| 392 | } |
| 393 | |
| 394 | /* Called when we have found a new FSC Hermes. */ |
| 395 | static void fscher_init_client(struct i2c_client *client) |
| 396 | { |
| 397 | struct fscher_data *data = i2c_get_clientdata(client); |
| 398 | |
| 399 | /* Read revision from chip */ |
| 400 | data->revision = fscher_read_value(client, FSCHER_REG_REVISION); |
| 401 | } |
| 402 | |
| 403 | static struct fscher_data *fscher_update_device(struct device *dev) |
| 404 | { |
| 405 | struct i2c_client *client = to_i2c_client(dev); |
| 406 | struct fscher_data *data = i2c_get_clientdata(client); |
| 407 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 408 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
| 411 | |
| 412 | dev_dbg(&client->dev, "Starting fscher update\n"); |
| 413 | |
| 414 | data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); |
| 415 | data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); |
| 416 | data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); |
| 417 | data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); |
| 418 | data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); |
| 419 | data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); |
| 420 | |
| 421 | data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); |
| 422 | data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); |
| 423 | data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); |
| 424 | |
| 425 | data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); |
| 426 | data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); |
| 427 | data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); |
| 428 | data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); |
| 429 | data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); |
| 430 | data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); |
| 431 | data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); |
| 432 | data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); |
| 433 | data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); |
| 434 | data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); |
| 435 | data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); |
| 436 | data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); |
| 437 | |
| 438 | data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); |
| 439 | data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); |
| 440 | data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); |
| 441 | |
| 442 | data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); |
Hans de Goede | 5cccf4a | 2007-07-19 15:57:20 +0200 | [diff] [blame] | 443 | data->global_control = fscher_read_value(client, |
| 444 | FSCHER_REG_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | data->last_updated = jiffies; |
| 447 | data->valid = 1; |
| 448 | } |
| 449 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 450 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | return data; |
| 453 | } |
| 454 | |
| 455 | |
| 456 | |
| 457 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) |
| 458 | |
| 459 | static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, |
| 460 | const char *buf, size_t count, int nr, int reg) |
| 461 | { |
| 462 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| 463 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; |
| 464 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 465 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; |
| 467 | fscher_write_value(client, reg, v); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 468 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | return count; |
| 470 | } |
| 471 | |
| 472 | static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) |
| 473 | { |
| 474 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ |
| 475 | return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); |
| 476 | } |
| 477 | |
| 478 | static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, |
| 479 | const char *buf, size_t count, int nr, int reg) |
| 480 | { |
| 481 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 482 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 483 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; |
| 485 | fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 486 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | return count; |
| 488 | } |
| 489 | |
| 490 | static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) |
| 491 | { |
| 492 | return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); |
| 493 | } |
| 494 | |
| 495 | static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data, |
| 496 | const char *buf, size_t count, int nr, int reg) |
| 497 | { |
| 498 | /* supported values: 2, 4, 8 */ |
| 499 | unsigned long v = simple_strtoul(buf, NULL, 10); |
| 500 | |
| 501 | switch (v) { |
| 502 | case 2: v = 1; break; |
| 503 | case 4: v = 2; break; |
| 504 | case 8: v = 3; break; |
| 505 | default: |
| 506 | dev_err(&client->dev, "fan_div value %ld not " |
| 507 | "supported. Choose one of 2, 4 or 8!\n", v); |
| 508 | return -EINVAL; |
| 509 | } |
| 510 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 511 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
| 513 | /* bits 2..7 reserved => mask with 0x03 */ |
| 514 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; |
| 515 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; |
| 516 | |
| 517 | fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 518 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | return count; |
| 520 | } |
| 521 | |
| 522 | static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) |
| 523 | { |
| 524 | /* bits 2..7 reserved => mask with 0x03 */ |
| 525 | return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); |
| 526 | } |
| 527 | |
| 528 | #define RPM_FROM_REG(val) (val*60) |
| 529 | |
| 530 | static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) |
| 531 | { |
| 532 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); |
| 533 | } |
| 534 | |
| 535 | |
| 536 | |
| 537 | #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) |
| 538 | |
| 539 | static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, |
| 540 | const char *buf, size_t count, int nr, int reg) |
| 541 | { |
| 542 | /* bits 2..7 reserved, 0 read only => mask with 0x02 */ |
| 543 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| 544 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 545 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; |
| 547 | fscher_write_value(client, reg, v); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 548 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | return count; |
| 550 | } |
| 551 | |
| 552 | static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) |
| 553 | { |
| 554 | /* bits 2..7 reserved => mask with 0x03 */ |
| 555 | return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); |
| 556 | } |
| 557 | |
| 558 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) |
| 559 | |
| 560 | static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) |
| 561 | { |
| 562 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); |
| 563 | } |
| 564 | |
| 565 | /* |
| 566 | * The final conversion is specified in sensors.conf, as it depends on |
| 567 | * mainboard specific values. We export the registers contents as |
| 568 | * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much |
| 569 | * sense per se, but it minimizes the conversions count and keeps the |
| 570 | * values within a usual range. |
| 571 | */ |
| 572 | #define VOLT_FROM_REG(val) ((val) * 10) |
| 573 | |
| 574 | static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) |
| 575 | { |
| 576 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); |
| 577 | } |
| 578 | |
| 579 | |
| 580 | |
| 581 | static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) |
| 582 | { |
| 583 | return sprintf(buf, "%u\n", data->revision); |
| 584 | } |
| 585 | |
| 586 | |
| 587 | |
| 588 | static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) |
| 589 | { |
| 590 | /* bits 2, 5..6 reserved => mask with 0x9b */ |
| 591 | return sprintf(buf, "%u\n", data->global_event & 0x9b); |
| 592 | } |
| 593 | |
| 594 | |
| 595 | |
| 596 | static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, |
| 597 | const char *buf, size_t count, int nr, int reg) |
| 598 | { |
| 599 | /* bits 1..7 reserved => mask with 0x01 */ |
| 600 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; |
| 601 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 602 | mutex_lock(&data->update_lock); |
Hans de Goede | 794f543 | 2007-07-22 20:15:31 +0200 | [diff] [blame] | 603 | data->global_control = v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | fscher_write_value(client, reg, v); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 605 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | return count; |
| 607 | } |
| 608 | |
| 609 | static ssize_t show_control(struct fscher_data *data, char *buf, int nr) |
| 610 | { |
| 611 | /* bits 1..7 reserved => mask with 0x01 */ |
| 612 | return sprintf(buf, "%u\n", data->global_control & 0x01); |
| 613 | } |
| 614 | |
| 615 | |
| 616 | |
| 617 | static ssize_t set_watchdog_control(struct i2c_client *client, struct |
| 618 | fscher_data *data, const char *buf, size_t count, |
| 619 | int nr, int reg) |
| 620 | { |
| 621 | /* bits 0..3 reserved => mask with 0xf0 */ |
| 622 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; |
| 623 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 624 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | data->watchdog[2] &= ~0xf0; |
| 626 | data->watchdog[2] |= v; |
| 627 | fscher_write_value(client, reg, data->watchdog[2]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 628 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | return count; |
| 630 | } |
| 631 | |
| 632 | static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) |
| 633 | { |
| 634 | /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ |
| 635 | return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); |
| 636 | } |
| 637 | |
| 638 | static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, |
| 639 | const char *buf, size_t count, int nr, int reg) |
| 640 | { |
| 641 | /* bits 0, 2..7 reserved => mask with 0x02 */ |
| 642 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; |
| 643 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 644 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | data->watchdog[1] &= ~v; |
| 646 | fscher_write_value(client, reg, v); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 647 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | return count; |
| 649 | } |
| 650 | |
| 651 | static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) |
| 652 | { |
| 653 | /* bits 0, 2..7 reserved => mask with 0x02 */ |
| 654 | return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); |
| 655 | } |
| 656 | |
| 657 | static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, |
| 658 | const char *buf, size_t count, int nr, int reg) |
| 659 | { |
| 660 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; |
| 661 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 662 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | data->watchdog[0] = v; |
| 664 | fscher_write_value(client, reg, data->watchdog[0]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 665 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | return count; |
| 667 | } |
| 668 | |
| 669 | static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) |
| 670 | { |
| 671 | return sprintf(buf, "%u\n", data->watchdog[0]); |
| 672 | } |
| 673 | |
| 674 | static int __init sensors_fscher_init(void) |
| 675 | { |
| 676 | return i2c_add_driver(&fscher_driver); |
| 677 | } |
| 678 | |
| 679 | static void __exit sensors_fscher_exit(void) |
| 680 | { |
| 681 | i2c_del_driver(&fscher_driver); |
| 682 | } |
| 683 | |
| 684 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); |
| 685 | MODULE_DESCRIPTION("FSC Hermes driver"); |
| 686 | MODULE_LICENSE("GPL"); |
| 687 | |
| 688 | module_init(sensors_fscher_init); |
| 689 | module_exit(sensors_fscher_exit); |