Blame view
drivers/hwmon/adm1025.c
18.4 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 |
/* * adm1025.c * * Copyright (C) 2000 Chen-Yuan Wu <gwu@esoft.com> |
956067236 hwmon: (adm1025) ... |
5 |
* Copyright (C) 2003-2009 Jean Delvare <khali@linux-fr.org> |
1da177e4c Linux-2.6.12-rc2 |
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 |
* * The ADM1025 is a sensor chip made by Analog Devices. It reports up to 6 * voltages (including its own power source) and up to two temperatures * (its own plus up to one external one). Voltages are scaled internally * (which is not the common way) with ratios such that the nominal value * of each voltage correspond to a register value of 192 (which means a * resolution of about 0.5% of the nominal value). Temperature values are * reported with a 1 deg resolution and a 3 deg accuracy. Complete * datasheet can be obtained from Analog's website at: * http://www.analog.com/Analog_Root/productPage/productHome/0,2121,ADM1025,00.html * * This driver also supports the ADM1025A, which differs from the ADM1025 * only in that it has "open-drain VID inputs while the ADM1025 has * on-chip 100k pull-ups on the VID inputs". It doesn't make any * difference for us. * * This driver also supports the NE1619, a sensor chip made by Philips. * That chip is similar to the ADM1025A, with a few differences. The only * difference that matters to us is that the NE1619 has only two possible * addresses while the ADM1025A has a third one. Complete datasheet can be * obtained from Philips's website at: * http://www.semiconductors.philips.com/pip/NE1619DS.html * * Since the ADM1025 was the first chipset supported by this driver, most * comments will refer to this chipset, but are actually general and * concern all supported chipsets, unless mentioned otherwise. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
1da177e4c Linux-2.6.12-rc2 |
47 48 49 50 51 |
#include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> |
943b0830c [PATCH] I2C hwmon... |
52 |
#include <linux/hwmon.h> |
d8543e7f3 hwmon: (adm1025) ... |
53 |
#include <linux/hwmon-sysfs.h> |
303760b44 [PATCH] hwmon: hw... |
54 |
#include <linux/hwmon-vid.h> |
943b0830c [PATCH] I2C hwmon... |
55 |
#include <linux/err.h> |
9a61bf630 [PATCH] hwmon: Se... |
56 |
#include <linux/mutex.h> |
1da177e4c Linux-2.6.12-rc2 |
57 58 59 60 61 62 |
/* * Addresses to scan * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e. * NE1619 has two possible addresses: 0x2c and 0x2d. */ |
25e9c86d5 hwmon: normal_i2c... |
63 |
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
1da177e4c Linux-2.6.12-rc2 |
64 |
|
e5e9f44c2 i2c: Drop I2C_CLI... |
65 |
enum chips { adm1025, ne1619 }; |
1da177e4c Linux-2.6.12-rc2 |
66 67 68 69 70 71 |
/* * The ADM1025 registers */ #define ADM1025_REG_MAN_ID 0x3E |
4e9527998 hwmon: (adm1025) ... |
72 |
#define ADM1025_REG_CHIP_ID 0x3F |
1da177e4c Linux-2.6.12-rc2 |
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 |
#define ADM1025_REG_CONFIG 0x40 #define ADM1025_REG_STATUS1 0x41 #define ADM1025_REG_STATUS2 0x42 #define ADM1025_REG_IN(nr) (0x20 + (nr)) #define ADM1025_REG_IN_MAX(nr) (0x2B + (nr) * 2) #define ADM1025_REG_IN_MIN(nr) (0x2C + (nr) * 2) #define ADM1025_REG_TEMP(nr) (0x26 + (nr)) #define ADM1025_REG_TEMP_HIGH(nr) (0x37 + (nr) * 2) #define ADM1025_REG_TEMP_LOW(nr) (0x38 + (nr) * 2) #define ADM1025_REG_VID 0x47 #define ADM1025_REG_VID4 0x49 /* * Conversions and various macros * The ADM1025 uses signed 8-bit values for temperatures. */ |
4e9527998 hwmon: (adm1025) ... |
89 |
static const int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 }; |
1da177e4c Linux-2.6.12-rc2 |
90 91 92 93 94 95 96 97 98 99 100 101 102 103 |
#define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ (val) * 192 >= (scale) * 255 ? 255 : \ ((val) * 192 + (scale)/2) / (scale)) #define TEMP_FROM_REG(reg) ((reg) * 1000) #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ (val) >= 126500 ? 127 : \ (((val) < 0 ? (val)-500 : (val)+500) / 1000)) /* * Functions declaration */ |
7dbafe021 hwmon: (adm1025) ... |
104 105 |
static int adm1025_probe(struct i2c_client *client, const struct i2c_device_id *id); |
310ec7921 i2c: Drop the kin... |
106 |
static int adm1025_detect(struct i2c_client *client, |
7dbafe021 hwmon: (adm1025) ... |
107 |
struct i2c_board_info *info); |
1da177e4c Linux-2.6.12-rc2 |
108 |
static void adm1025_init_client(struct i2c_client *client); |
7dbafe021 hwmon: (adm1025) ... |
109 |
static int adm1025_remove(struct i2c_client *client); |
1da177e4c Linux-2.6.12-rc2 |
110 111 112 113 114 |
static struct adm1025_data *adm1025_update_device(struct device *dev); /* * Driver data (common to all clients) */ |
7dbafe021 hwmon: (adm1025) ... |
115 116 117 118 119 120 |
static const struct i2c_device_id adm1025_id[] = { { "adm1025", adm1025 }, { "ne1619", ne1619 }, { } }; MODULE_DEVICE_TABLE(i2c, adm1025_id); |
1da177e4c Linux-2.6.12-rc2 |
121 |
static struct i2c_driver adm1025_driver = { |
7dbafe021 hwmon: (adm1025) ... |
122 |
.class = I2C_CLASS_HWMON, |
cdaf79349 [PATCH] i2c: Drop... |
123 |
.driver = { |
cdaf79349 [PATCH] i2c: Drop... |
124 125 |
.name = "adm1025", }, |
7dbafe021 hwmon: (adm1025) ... |
126 127 128 129 |
.probe = adm1025_probe, .remove = adm1025_remove, .id_table = adm1025_id, .detect = adm1025_detect, |
c3813d6af i2c: Get rid of s... |
130 |
.address_list = normal_i2c, |
1da177e4c Linux-2.6.12-rc2 |
131 132 133 134 135 136 137 |
}; /* * Client data (each client gets its own) */ struct adm1025_data { |
1beeffe43 hwmon: Convert fr... |
138 |
struct device *hwmon_dev; |
9a61bf630 [PATCH] hwmon: Se... |
139 |
struct mutex update_lock; |
1da177e4c Linux-2.6.12-rc2 |
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 |
char valid; /* zero until following fields are valid */ unsigned long last_updated; /* in jiffies */ u8 in[6]; /* register value */ u8 in_max[6]; /* register value */ u8 in_min[6]; /* register value */ s8 temp[2]; /* register value */ s8 temp_min[2]; /* register value */ s8 temp_max[2]; /* register value */ u16 alarms; /* register values, combined */ u8 vid; /* register values, combined */ u8 vrm; }; /* * Sysfs stuff */ |
d8543e7f3 hwmon: (adm1025) ... |
157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 |
static ssize_t show_in(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", IN_FROM_REG(data->in[index], in_scale[index])); } static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", IN_FROM_REG(data->in_min[index], in_scale[index])); } static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", IN_FROM_REG(data->in_max[index], in_scale[index])); } static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%d ", TEMP_FROM_REG(data->temp[index])); } static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%d ", TEMP_FROM_REG(data->temp_min[index])); } static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%d ", TEMP_FROM_REG(data->temp_max[index])); } static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int index = to_sensor_dev_attr(attr)->index; struct i2c_client *client = to_i2c_client(dev); struct adm1025_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_min[index] = IN_TO_REG(val, in_scale[index]); i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MIN(index), data->in_min[index]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int index = to_sensor_dev_attr(attr)->index; struct i2c_client *client = to_i2c_client(dev); struct adm1025_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_max[index] = IN_TO_REG(val, in_scale[index]); i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index), data->in_max[index]); mutex_unlock(&data->update_lock); return count; } |
1da177e4c Linux-2.6.12-rc2 |
245 246 |
#define set_in(offset) \ |
d8543e7f3 hwmon: (adm1025) ... |
247 248 249 250 251 252 |
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ show_in, NULL, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \ show_in_min, set_in_min, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \ show_in_max, set_in_max, offset) |
1da177e4c Linux-2.6.12-rc2 |
253 254 255 256 257 258 |
set_in(0); set_in(1); set_in(2); set_in(3); set_in(4); set_in(5); |
d8543e7f3 hwmon: (adm1025) ... |
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 |
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int index = to_sensor_dev_attr(attr)->index; struct i2c_client *client = to_i2c_client(dev); struct adm1025_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_min[index] = TEMP_TO_REG(val); i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_LOW(index), data->temp_min[index]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int index = to_sensor_dev_attr(attr)->index; struct i2c_client *client = to_i2c_client(dev); struct adm1025_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_max[index] = TEMP_TO_REG(val); i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(index), data->temp_max[index]); mutex_unlock(&data->update_lock); return count; } |
1da177e4c Linux-2.6.12-rc2 |
290 |
#define set_temp(offset) \ |
d8543e7f3 hwmon: (adm1025) ... |
291 292 293 294 295 296 |
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ show_temp, NULL, offset - 1); \ static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \ show_temp_min, set_temp_min, offset - 1); \ static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \ show_temp_max, set_temp_max, offset - 1) |
1da177e4c Linux-2.6.12-rc2 |
297 298 |
set_temp(1); set_temp(2); |
4e9527998 hwmon: (adm1025) ... |
299 300 |
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
301 302 303 304 305 306 |
{ struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", data->alarms); } static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
bb0813003 hwmon: (adm1025) ... |
307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 |
static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) { int bitnr = to_sensor_dev_attr(attr)->index; struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", (data->alarms >> bitnr) & 1); } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 4); static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); |
4e9527998 hwmon: (adm1025) ... |
324 325 |
static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
326 327 328 329 330 |
{ struct adm1025_data *data = adm1025_update_device(dev); return sprintf(buf, "%u ", vid_from_reg(data->vid, data->vrm)); } |
937df8df9 [PATCH] I2C: sysf... |
331 |
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); |
1da177e4c Linux-2.6.12-rc2 |
332 |
|
4e9527998 hwmon: (adm1025) ... |
333 334 |
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
335 |
{ |
90d6619a9 hwmon: VRM is not... |
336 |
struct adm1025_data *data = dev_get_drvdata(dev); |
1da177e4c Linux-2.6.12-rc2 |
337 338 339 |
return sprintf(buf, "%u ", data->vrm); } |
4e9527998 hwmon: (adm1025) ... |
340 341 |
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
342 |
{ |
8f74efe81 hwmon: VRM is not... |
343 |
struct adm1025_data *data = dev_get_drvdata(dev); |
1da177e4c Linux-2.6.12-rc2 |
344 345 346 347 348 349 350 351 |
data->vrm = simple_strtoul(buf, NULL, 10); return count; } static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); /* * Real code */ |
681c6f7a6 hwmon: Fix unchec... |
352 |
static struct attribute *adm1025_attributes[] = { |
d8543e7f3 hwmon: (adm1025) ... |
353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 |
&sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in5_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in5_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in5_max.dev_attr.attr, |
bb0813003 hwmon: (adm1025) ... |
368 369 370 371 372 |
&sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_in5_alarm.dev_attr.attr, |
d8543e7f3 hwmon: (adm1025) ... |
373 374 375 376 377 378 |
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp1_min.dev_attr.attr, &sensor_dev_attr_temp2_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, |
bb0813003 hwmon: (adm1025) ... |
379 380 381 |
&sensor_dev_attr_temp1_alarm.dev_attr.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, &sensor_dev_attr_temp1_fault.dev_attr.attr, |
681c6f7a6 hwmon: Fix unchec... |
382 383 384 385 386 387 388 389 390 |
&dev_attr_alarms.attr, &dev_attr_cpu0_vid.attr, &dev_attr_vrm.attr, NULL }; static const struct attribute_group adm1025_group = { .attrs = adm1025_attributes, }; |
4e9527998 hwmon: (adm1025) ... |
391 |
static struct attribute *adm1025_attributes_in4[] = { |
d8543e7f3 hwmon: (adm1025) ... |
392 393 394 |
&sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in4_min.dev_attr.attr, &sensor_dev_attr_in4_max.dev_attr.attr, |
bb0813003 hwmon: (adm1025) ... |
395 |
&sensor_dev_attr_in4_alarm.dev_attr.attr, |
681c6f7a6 hwmon: Fix unchec... |
396 397 |
NULL }; |
4e9527998 hwmon: (adm1025) ... |
398 399 |
static const struct attribute_group adm1025_group_in4 = { .attrs = adm1025_attributes_in4, |
681c6f7a6 hwmon: Fix unchec... |
400 |
}; |
7dbafe021 hwmon: (adm1025) ... |
401 |
/* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec7921 i2c: Drop the kin... |
402 |
static int adm1025_detect(struct i2c_client *client, |
7dbafe021 hwmon: (adm1025) ... |
403 |
struct i2c_board_info *info) |
1da177e4c Linux-2.6.12-rc2 |
404 |
{ |
7dbafe021 hwmon: (adm1025) ... |
405 |
struct i2c_adapter *adapter = client->adapter; |
956067236 hwmon: (adm1025) ... |
406 407 |
const char *name; u8 man_id, chip_id; |
1da177e4c Linux-2.6.12-rc2 |
408 409 |
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
7dbafe021 hwmon: (adm1025) ... |
410 |
return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
411 |
|
956067236 hwmon: (adm1025) ... |
412 413 414 415 416 417 418 419 |
/* Check for unused bits */ if ((i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG) & 0x80) || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS1) & 0xC0) || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS2) & 0xBC)) { dev_dbg(&adapter->dev, "ADM1025 detection failed at 0x%02x ", client->addr); return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
420 |
} |
956067236 hwmon: (adm1025) ... |
421 422 423 424 |
/* Identification */ chip_id = i2c_smbus_read_byte_data(client, ADM1025_REG_CHIP_ID); if ((chip_id & 0xF0) != 0x20) return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
425 |
|
956067236 hwmon: (adm1025) ... |
426 427 |
man_id = i2c_smbus_read_byte_data(client, ADM1025_REG_MAN_ID); if (man_id == 0x41) |
1da177e4c Linux-2.6.12-rc2 |
428 |
name = "adm1025"; |
956067236 hwmon: (adm1025) ... |
429 |
else if (man_id == 0xA1 && client->addr != 0x2E) |
1da177e4c Linux-2.6.12-rc2 |
430 |
name = "ne1619"; |
956067236 hwmon: (adm1025) ... |
431 432 |
else return -ENODEV; |
7dbafe021 hwmon: (adm1025) ... |
433 |
strlcpy(info->type, name, I2C_NAME_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
434 |
|
7dbafe021 hwmon: (adm1025) ... |
435 436 |
return 0; } |
1da177e4c Linux-2.6.12-rc2 |
437 |
|
7dbafe021 hwmon: (adm1025) ... |
438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 |
static int adm1025_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct adm1025_data *data; int err; u8 config; data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL); if (!data) { err = -ENOMEM; goto exit; } i2c_set_clientdata(client, data); mutex_init(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
453 454 |
/* Initialize the ADM1025 chip */ |
4e9527998 hwmon: (adm1025) ... |
455 |
adm1025_init_client(client); |
1da177e4c Linux-2.6.12-rc2 |
456 457 |
/* Register sysfs hooks */ |
4e9527998 hwmon: (adm1025) ... |
458 |
if ((err = sysfs_create_group(&client->dev.kobj, &adm1025_group))) |
7dbafe021 hwmon: (adm1025) ... |
459 |
goto exit_free; |
1da177e4c Linux-2.6.12-rc2 |
460 461 |
/* Pin 11 is either in4 (+12V) or VID4 */ |
7dbafe021 hwmon: (adm1025) ... |
462 |
config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); |
1da177e4c Linux-2.6.12-rc2 |
463 |
if (!(config & 0x20)) { |
4e9527998 hwmon: (adm1025) ... |
464 465 |
if ((err = sysfs_create_group(&client->dev.kobj, &adm1025_group_in4))) |
681c6f7a6 hwmon: Fix unchec... |
466 467 |
goto exit_remove; } |
4e9527998 hwmon: (adm1025) ... |
468 |
data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe43 hwmon: Convert fr... |
469 470 |
if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); |
681c6f7a6 hwmon: Fix unchec... |
471 |
goto exit_remove; |
1da177e4c Linux-2.6.12-rc2 |
472 473 474 |
} return 0; |
681c6f7a6 hwmon: Fix unchec... |
475 |
exit_remove: |
4e9527998 hwmon: (adm1025) ... |
476 477 |
sysfs_remove_group(&client->dev.kobj, &adm1025_group); sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); |
1da177e4c Linux-2.6.12-rc2 |
478 479 480 481 482 483 484 485 486 487 488 |
exit_free: kfree(data); exit: return err; } static void adm1025_init_client(struct i2c_client *client) { u8 reg; struct adm1025_data *data = i2c_get_clientdata(client); int i; |
303760b44 [PATCH] hwmon: hw... |
489 |
data->vrm = vid_which_vrm(); |
1da177e4c Linux-2.6.12-rc2 |
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 |
/* * Set high limits * Usually we avoid setting limits on driver init, but it happens * that the ADM1025 comes with stupid default limits (all registers * set to 0). In case the chip has not gone through any limit * setting yet, we better set the high limits to the max so that * no alarm triggers. */ for (i=0; i<6; i++) { reg = i2c_smbus_read_byte_data(client, ADM1025_REG_IN_MAX(i)); if (reg == 0) i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(i), 0xFF); } for (i=0; i<2; i++) { reg = i2c_smbus_read_byte_data(client, ADM1025_REG_TEMP_HIGH(i)); if (reg == 0) i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(i), 0x7F); } /* * Start the conversions */ reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); if (!(reg & 0x01)) i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG, (reg&0x7E)|0x01); } |
7dbafe021 hwmon: (adm1025) ... |
524 |
static int adm1025_remove(struct i2c_client *client) |
1da177e4c Linux-2.6.12-rc2 |
525 |
{ |
943b0830c [PATCH] I2C hwmon... |
526 |
struct adm1025_data *data = i2c_get_clientdata(client); |
1da177e4c Linux-2.6.12-rc2 |
527 |
|
1beeffe43 hwmon: Convert fr... |
528 |
hwmon_device_unregister(data->hwmon_dev); |
681c6f7a6 hwmon: Fix unchec... |
529 |
sysfs_remove_group(&client->dev.kobj, &adm1025_group); |
4e9527998 hwmon: (adm1025) ... |
530 |
sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); |
943b0830c [PATCH] I2C hwmon... |
531 |
|
943b0830c [PATCH] I2C hwmon... |
532 |
kfree(data); |
1da177e4c Linux-2.6.12-rc2 |
533 534 535 536 537 538 539 |
return 0; } static struct adm1025_data *adm1025_update_device(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct adm1025_data *data = i2c_get_clientdata(client); |
9a61bf630 [PATCH] hwmon: Se... |
540 |
mutex_lock(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 |
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) { int i; dev_dbg(&client->dev, "Updating data. "); for (i=0; i<6; i++) { data->in[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_IN(i)); data->in_min[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_IN_MIN(i)); data->in_max[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_IN_MAX(i)); } for (i=0; i<2; i++) { data->temp[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_TEMP(i)); data->temp_min[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_TEMP_LOW(i)); data->temp_max[i] = i2c_smbus_read_byte_data(client, ADM1025_REG_TEMP_HIGH(i)); } data->alarms = i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS1) | (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS2) << 8); data->vid = (i2c_smbus_read_byte_data(client, ADM1025_REG_VID) & 0x0f) | ((i2c_smbus_read_byte_data(client, ADM1025_REG_VID4) & 0x01) << 4); data->last_updated = jiffies; data->valid = 1; } |
9a61bf630 [PATCH] hwmon: Se... |
575 |
mutex_unlock(&data->update_lock); |
1da177e4c Linux-2.6.12-rc2 |
576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 |
return data; } static int __init sensors_adm1025_init(void) { return i2c_add_driver(&adm1025_driver); } static void __exit sensors_adm1025_exit(void) { i2c_del_driver(&adm1025_driver); } MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); MODULE_DESCRIPTION("ADM1025 driver"); MODULE_LICENSE("GPL"); module_init(sensors_adm1025_init); module_exit(sensors_adm1025_exit); |