Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Evgeniy Polyakov | 7785925 | 2005-05-20 22:33:25 +0400 | [diff] [blame] | 2 | * w1_therm.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Evgeniy Polyakov | a801876 | 2011-08-25 15:59:06 -0700 | [diff] [blame] | 4 | * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net> |
Evgeniy Polyakov | 7785925 | 2005-05-20 22:33:25 +0400 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the therms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include <asm/types.h> |
| 23 | |
| 24 | #include <linux/kernel.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/moduleparam.h> |
Al Viro | f6a5703 | 2006-10-18 01:47:25 -0400 | [diff] [blame] | 27 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/device.h> |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/delay.h> |
| 31 | |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 32 | #include "../w1.h" |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 33 | #include "../w1_int.h" |
| 34 | #include "../w1_family.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | MODULE_LICENSE("GPL"); |
Evgeniy Polyakov | a801876 | 2011-08-25 15:59:06 -0700 | [diff] [blame] | 37 | MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family."); |
| 39 | |
David Fries | 6cd1597 | 2008-10-15 22:04:43 -0700 | [diff] [blame] | 40 | /* Allow the strong pullup to be disabled, but default to enabled. |
| 41 | * If it was disabled a parasite powered device might not get the require |
| 42 | * current to do a temperature conversion. If it is enabled parasite powered |
| 43 | * devices have a better chance of getting the current required. |
Michael Arndt | 29e5507 | 2013-02-17 20:51:20 +0100 | [diff] [blame^] | 44 | * In case the parasite power-detection is not working (seems to be the case |
| 45 | * for some DS18S20) the strong pullup can also be forced, regardless of the |
| 46 | * power state of the devices. |
| 47 | * |
| 48 | * Summary of options: |
| 49 | * - strong_pullup = 0 Disable strong pullup completely |
| 50 | * - strong_pullup = 1 Enable automatic strong pullup detection |
| 51 | * - strong_pullup = 2 Force strong pullup |
David Fries | 6cd1597 | 2008-10-15 22:04:43 -0700 | [diff] [blame] | 52 | */ |
| 53 | static int w1_strong_pullup = 1; |
| 54 | module_param_named(strong_pullup, w1_strong_pullup, int, 0); |
| 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 57 | static ssize_t w1_therm_read(struct device *device, |
| 58 | struct device_attribute *attr, char *buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 60 | static struct device_attribute w1_therm_attr = |
| 61 | __ATTR(w1_slave, S_IRUGO, w1_therm_read, NULL); |
Evgeniy Polyakov | d2a4ef6 | 2005-08-11 17:27:50 +0400 | [diff] [blame] | 62 | |
| 63 | static int w1_therm_add_slave(struct w1_slave *sl) |
| 64 | { |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 65 | return device_create_file(&sl->dev, &w1_therm_attr); |
Evgeniy Polyakov | d2a4ef6 | 2005-08-11 17:27:50 +0400 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | static void w1_therm_remove_slave(struct w1_slave *sl) |
| 69 | { |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 70 | device_remove_file(&sl->dev, &w1_therm_attr); |
Evgeniy Polyakov | d2a4ef6 | 2005-08-11 17:27:50 +0400 | [diff] [blame] | 71 | } |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | static struct w1_family_ops w1_therm_fops = { |
Evgeniy Polyakov | d2a4ef6 | 2005-08-11 17:27:50 +0400 | [diff] [blame] | 74 | .add_slave = w1_therm_add_slave, |
| 75 | .remove_slave = w1_therm_remove_slave, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | }; |
| 77 | |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 78 | static struct w1_family w1_therm_family_DS18S20 = { |
| 79 | .fid = W1_THERM_DS18S20, |
| 80 | .fops = &w1_therm_fops, |
| 81 | }; |
| 82 | |
| 83 | static struct w1_family w1_therm_family_DS18B20 = { |
| 84 | .fid = W1_THERM_DS18B20, |
| 85 | .fops = &w1_therm_fops, |
| 86 | }; |
Evgeniy Polyakov | d2a4ef6 | 2005-08-11 17:27:50 +0400 | [diff] [blame] | 87 | |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 88 | static struct w1_family w1_therm_family_DS1822 = { |
| 89 | .fid = W1_THERM_DS1822, |
| 90 | .fops = &w1_therm_fops, |
| 91 | }; |
| 92 | |
Christian Glindkamp | f7b1371 | 2011-07-26 16:08:55 -0700 | [diff] [blame] | 93 | static struct w1_family w1_therm_family_DS28EA00 = { |
| 94 | .fid = W1_THERM_DS28EA00, |
| 95 | .fops = &w1_therm_fops, |
| 96 | }; |
| 97 | |
Raphael Assenat | f3261df | 2012-08-16 12:56:40 -0400 | [diff] [blame] | 98 | static struct w1_family w1_therm_family_DS1825 = { |
| 99 | .fid = W1_THERM_DS1825, |
| 100 | .fops = &w1_therm_fops, |
| 101 | }; |
| 102 | |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 103 | struct w1_therm_family_converter |
| 104 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 105 | u8 broken; |
| 106 | u16 reserved; |
| 107 | struct w1_family *f; |
| 108 | int (*convert)(u8 rom[9]); |
| 109 | }; |
| 110 | |
David Fries | 7129b12 | 2008-02-06 01:38:09 -0800 | [diff] [blame] | 111 | /* The return value is millidegrees Centigrade. */ |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 112 | static inline int w1_DS18B20_convert_temp(u8 rom[9]); |
| 113 | static inline int w1_DS18S20_convert_temp(u8 rom[9]); |
| 114 | |
| 115 | static struct w1_therm_family_converter w1_therm_families[] = { |
| 116 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 117 | .f = &w1_therm_family_DS18S20, |
| 118 | .convert = w1_DS18S20_convert_temp |
| 119 | }, |
| 120 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 121 | .f = &w1_therm_family_DS1822, |
| 122 | .convert = w1_DS18B20_convert_temp |
| 123 | }, |
| 124 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 125 | .f = &w1_therm_family_DS18B20, |
| 126 | .convert = w1_DS18B20_convert_temp |
| 127 | }, |
Christian Glindkamp | f7b1371 | 2011-07-26 16:08:55 -0700 | [diff] [blame] | 128 | { |
| 129 | .f = &w1_therm_family_DS28EA00, |
| 130 | .convert = w1_DS18B20_convert_temp |
| 131 | }, |
Raphael Assenat | f3261df | 2012-08-16 12:56:40 -0400 | [diff] [blame] | 132 | { |
| 133 | .f = &w1_therm_family_DS1825, |
| 134 | .convert = w1_DS18B20_convert_temp |
| 135 | } |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 136 | }; |
| 137 | |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 138 | static inline int w1_DS18B20_convert_temp(u8 rom[9]) |
| 139 | { |
Ian Dall | 9a6a1ec | 2010-04-23 13:17:53 -0400 | [diff] [blame] | 140 | s16 t = le16_to_cpup((__le16 *)rom); |
| 141 | return t*1000/16; |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | static inline int w1_DS18S20_convert_temp(u8 rom[9]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | { |
| 146 | int t, h; |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 147 | |
| 148 | if (!rom[7]) |
| 149 | return 0; |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | if (rom[1] == 0) |
| 152 | t = ((s32)rom[0] >> 1)*1000; |
| 153 | else |
| 154 | t = 1000*(-1*(s32)(0x100-rom[0]) >> 1); |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | t -= 250; |
| 157 | h = 1000*((s32)rom[7] - (s32)rom[6]); |
| 158 | h /= (s32)rom[7]; |
| 159 | t += h; |
| 160 | |
| 161 | return t; |
| 162 | } |
| 163 | |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 164 | static inline int w1_convert_temp(u8 rom[9], u8 fid) |
| 165 | { |
| 166 | int i; |
| 167 | |
Ahmed S. Darwish | 9d0094d | 2007-02-12 00:52:05 -0800 | [diff] [blame] | 168 | for (i = 0; i < ARRAY_SIZE(w1_therm_families); ++i) |
Evgeniy Polyakov | 4e470aa | 2005-05-20 22:50:33 +0400 | [diff] [blame] | 169 | if (w1_therm_families[i].f->fid == fid) |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 170 | return w1_therm_families[i].convert(rom); |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 176 | static ssize_t w1_therm_read(struct device *device, |
| 177 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | { |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 179 | struct w1_slave *sl = dev_to_w1_slave(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | struct w1_master *dev = sl->master; |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 181 | u8 rom[9], crc, verdict, external_power; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | int i, max_trying = 10; |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 183 | ssize_t c = PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
NeilBrown | b02f8be | 2012-05-18 15:59:52 +1000 | [diff] [blame] | 185 | i = mutex_lock_interruptible(&dev->bus_mutex); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 186 | if (i != 0) |
| 187 | return i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | memset(rom, 0, sizeof(rom)); |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | while (max_trying--) { |
David Stevenson | 867ff98 | 2012-12-18 01:37:56 +0000 | [diff] [blame] | 192 | |
| 193 | verdict = 0; |
| 194 | crc = 0; |
| 195 | |
Evgeniy Polyakov | ea7d8f6 | 2005-08-11 17:27:49 +0400 | [diff] [blame] | 196 | if (!w1_reset_select_slave(sl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | int count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | unsigned int tm = 750; |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 199 | unsigned long sleep_rem; |
| 200 | |
| 201 | w1_write_8(dev, W1_READ_PSUPPLY); |
| 202 | external_power = w1_read_8(dev); |
| 203 | |
| 204 | if (w1_reset_select_slave(sl)) |
| 205 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
David Fries | 6cd1597 | 2008-10-15 22:04:43 -0700 | [diff] [blame] | 207 | /* 750ms strong pullup (or delay) after the convert */ |
Michael Arndt | 29e5507 | 2013-02-17 20:51:20 +0100 | [diff] [blame^] | 208 | if (w1_strong_pullup == 2 || |
| 209 | (!external_power && w1_strong_pullup)) |
David Fries | 6cd1597 | 2008-10-15 22:04:43 -0700 | [diff] [blame] | 210 | w1_next_pullup(dev, tm); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | w1_write_8(dev, W1_CONVERT_TEMP); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 213 | |
| 214 | if (external_power) { |
NeilBrown | b02f8be | 2012-05-18 15:59:52 +1000 | [diff] [blame] | 215 | mutex_unlock(&dev->bus_mutex); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 216 | |
| 217 | sleep_rem = msleep_interruptible(tm); |
| 218 | if (sleep_rem != 0) |
| 219 | return -EINTR; |
| 220 | |
NeilBrown | b02f8be | 2012-05-18 15:59:52 +1000 | [diff] [blame] | 221 | i = mutex_lock_interruptible(&dev->bus_mutex); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 222 | if (i != 0) |
| 223 | return i; |
| 224 | } else if (!w1_strong_pullup) { |
| 225 | sleep_rem = msleep_interruptible(tm); |
| 226 | if (sleep_rem != 0) { |
NeilBrown | b02f8be | 2012-05-18 15:59:52 +1000 | [diff] [blame] | 227 | mutex_unlock(&dev->bus_mutex); |
Maciej Szmigiero | 377195c | 2011-11-16 00:43:16 +0100 | [diff] [blame] | 228 | return -EINTR; |
| 229 | } |
| 230 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
Evgeniy Polyakov | ea7d8f6 | 2005-08-11 17:27:49 +0400 | [diff] [blame] | 232 | if (!w1_reset_select_slave(sl)) { |
Evgeniy Polyakov | 7785925 | 2005-05-20 22:33:25 +0400 | [diff] [blame] | 233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | w1_write_8(dev, W1_READ_SCRATCHPAD); |
| 235 | if ((count = w1_read_block(dev, rom, 9)) != 9) { |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 236 | dev_warn(device, "w1_read_block() " |
| 237 | "returned %u instead of 9.\n", |
| 238 | count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | crc = w1_calc_crc8(rom, 8); |
| 242 | |
David Fries | 80c002d | 2008-01-22 03:31:39 -0800 | [diff] [blame] | 243 | if (rom[8] == crc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | verdict = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | } |
| 246 | } |
| 247 | |
David Stevenson | 867ff98 | 2012-12-18 01:37:56 +0000 | [diff] [blame] | 248 | if (verdict) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | break; |
| 250 | } |
| 251 | |
| 252 | for (i = 0; i < 9; ++i) |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 253 | c -= snprintf(buf + PAGE_SIZE - c, c, "%02x ", rom[i]); |
| 254 | c -= snprintf(buf + PAGE_SIZE - c, c, ": crc=%02x %s\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | crc, (verdict) ? "YES" : "NO"); |
| 256 | if (verdict) |
| 257 | memcpy(sl->rom, rom, sizeof(sl->rom)); |
| 258 | else |
David Stevenson | 867ff98 | 2012-12-18 01:37:56 +0000 | [diff] [blame] | 259 | dev_warn(device, "Read failed CRC check\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | for (i = 0; i < 9; ++i) |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 262 | c -= snprintf(buf + PAGE_SIZE - c, c, "%02x ", sl->rom[i]); |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 263 | |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 264 | c -= snprintf(buf + PAGE_SIZE - c, c, "t=%d\n", |
| 265 | w1_convert_temp(rom, sl->family->fid)); |
NeilBrown | b02f8be | 2012-05-18 15:59:52 +1000 | [diff] [blame] | 266 | mutex_unlock(&dev->bus_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
David Fries | 347ba8a | 2008-10-15 22:04:51 -0700 | [diff] [blame] | 268 | return PAGE_SIZE - c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | static int __init w1_therm_init(void) |
| 272 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 273 | int err, i; |
| 274 | |
Ahmed S. Darwish | 9d0094d | 2007-02-12 00:52:05 -0800 | [diff] [blame] | 275 | for (i = 0; i < ARRAY_SIZE(w1_therm_families); ++i) { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 276 | err = w1_register_family(w1_therm_families[i].f); |
| 277 | if (err) |
| 278 | w1_therm_families[i].broken = 1; |
| 279 | } |
| 280 | |
| 281 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | static void __exit w1_therm_fini(void) |
| 285 | { |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 286 | int i; |
| 287 | |
Ahmed S. Darwish | 9d0094d | 2007-02-12 00:52:05 -0800 | [diff] [blame] | 288 | for (i = 0; i < ARRAY_SIZE(w1_therm_families); ++i) |
Evgeniy Polyakov | 718a538 | 2005-04-17 22:58:14 +0400 | [diff] [blame] | 289 | if (!w1_therm_families[i].broken) |
| 290 | w1_unregister_family(w1_therm_families[i].f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | module_init(w1_therm_init); |
| 294 | module_exit(w1_therm_fini); |