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298c7524 DW |
1 | /* |
2 | * A hwmon driver for the Intel 5000 series chipset FB-DIMM AMB | |
3 | * temperature sensors | |
4 | * Copyright (C) 2007 IBM | |
5 | * | |
6 | * Author: Darrick J. Wong <djwong@us.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/jiffies.h> | |
25 | #include <linux/hwmon.h> | |
26 | #include <linux/hwmon-sysfs.h> | |
27 | #include <linux/err.h> | |
28 | #include <linux/mutex.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/log2.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/platform_device.h> | |
33 | ||
34 | #define DRVNAME "i5k_amb" | |
35 | ||
36 | #define I5K_REG_AMB_BASE_ADDR 0x48 | |
37 | #define I5K_REG_AMB_LEN_ADDR 0x50 | |
38 | #define I5K_REG_CHAN0_PRESENCE_ADDR 0x64 | |
39 | #define I5K_REG_CHAN1_PRESENCE_ADDR 0x66 | |
40 | ||
41 | #define AMB_REG_TEMP_MIN_ADDR 0x80 | |
42 | #define AMB_REG_TEMP_MID_ADDR 0x81 | |
43 | #define AMB_REG_TEMP_MAX_ADDR 0x82 | |
44 | #define AMB_REG_TEMP_STATUS_ADDR 0x84 | |
45 | #define AMB_REG_TEMP_ADDR 0x85 | |
46 | ||
47 | #define AMB_CONFIG_SIZE 2048 | |
48 | #define AMB_FUNC_3_OFFSET 768 | |
49 | ||
59a030a9 DW |
50 | static unsigned long amb_reg_temp_status(unsigned int amb) |
51 | { | |
52 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_STATUS_ADDR + | |
53 | AMB_CONFIG_SIZE * amb; | |
54 | } | |
55 | ||
56 | static unsigned long amb_reg_temp_min(unsigned int amb) | |
57 | { | |
58 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MIN_ADDR + | |
59 | AMB_CONFIG_SIZE * amb; | |
60 | } | |
61 | ||
62 | static unsigned long amb_reg_temp_mid(unsigned int amb) | |
63 | { | |
64 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MID_ADDR + | |
65 | AMB_CONFIG_SIZE * amb; | |
66 | } | |
67 | ||
68 | static unsigned long amb_reg_temp_max(unsigned int amb) | |
69 | { | |
70 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MAX_ADDR + | |
71 | AMB_CONFIG_SIZE * amb; | |
72 | } | |
73 | ||
74 | static unsigned long amb_reg_temp(unsigned int amb) | |
75 | { | |
76 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_ADDR + | |
77 | AMB_CONFIG_SIZE * amb; | |
78 | } | |
298c7524 DW |
79 | |
80 | #define MAX_MEM_CHANNELS 4 | |
81 | #define MAX_AMBS_PER_CHANNEL 16 | |
82 | #define MAX_AMBS (MAX_MEM_CHANNELS * \ | |
83 | MAX_AMBS_PER_CHANNEL) | |
84 | /* | |
85 | * Ugly hack: For some reason the highest bit is set if there | |
86 | * are _any_ DIMMs in the channel. Attempting to read from | |
87 | * this "high-order" AMB results in a memory bus error, so | |
88 | * for now we'll just ignore that top bit, even though that | |
89 | * might prevent us from seeing the 16th DIMM in the channel. | |
90 | */ | |
91 | #define REAL_MAX_AMBS_PER_CHANNEL 15 | |
92 | #define KNOBS_PER_AMB 5 | |
93 | ||
59a030a9 DW |
94 | static unsigned long amb_num_from_reg(unsigned int byte_num, unsigned int bit) |
95 | { | |
96 | return byte_num * MAX_AMBS_PER_CHANNEL + bit; | |
97 | } | |
298c7524 DW |
98 | |
99 | #define AMB_SYSFS_NAME_LEN 16 | |
100 | struct i5k_device_attribute { | |
101 | struct sensor_device_attribute s_attr; | |
102 | char name[AMB_SYSFS_NAME_LEN]; | |
103 | }; | |
104 | ||
105 | struct i5k_amb_data { | |
106 | struct device *hwmon_dev; | |
107 | ||
108 | unsigned long amb_base; | |
109 | unsigned long amb_len; | |
110 | u16 amb_present[MAX_MEM_CHANNELS]; | |
111 | void __iomem *amb_mmio; | |
112 | struct i5k_device_attribute *attrs; | |
113 | unsigned int num_attrs; | |
114 | }; | |
115 | ||
116 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
117 | char *buf) | |
118 | { | |
119 | return sprintf(buf, "%s\n", DRVNAME); | |
120 | } | |
121 | ||
122 | ||
123 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
124 | ||
125 | static struct platform_device *amb_pdev; | |
126 | ||
127 | static u8 amb_read_byte(struct i5k_amb_data *data, unsigned long offset) | |
128 | { | |
129 | return ioread8(data->amb_mmio + offset); | |
130 | } | |
131 | ||
132 | static void amb_write_byte(struct i5k_amb_data *data, unsigned long offset, | |
133 | u8 val) | |
134 | { | |
135 | iowrite8(val, data->amb_mmio + offset); | |
136 | } | |
137 | ||
138 | static ssize_t show_amb_alarm(struct device *dev, | |
139 | struct device_attribute *devattr, | |
140 | char *buf) | |
141 | { | |
142 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
143 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
144 | ||
59a030a9 DW |
145 | if (!(amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x20) && |
146 | (amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x8)) | |
298c7524 DW |
147 | return sprintf(buf, "1\n"); |
148 | else | |
149 | return sprintf(buf, "0\n"); | |
150 | } | |
151 | ||
152 | static ssize_t store_amb_min(struct device *dev, | |
153 | struct device_attribute *devattr, | |
154 | const char *buf, | |
155 | size_t count) | |
156 | { | |
157 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
158 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
159 | unsigned long temp = simple_strtoul(buf, NULL, 10) / 500; | |
160 | ||
161 | if (temp > 255) | |
162 | temp = 255; | |
163 | ||
59a030a9 | 164 | amb_write_byte(data, amb_reg_temp_min(attr->index), temp); |
298c7524 DW |
165 | return count; |
166 | } | |
167 | ||
168 | static ssize_t store_amb_mid(struct device *dev, | |
169 | struct device_attribute *devattr, | |
170 | const char *buf, | |
171 | size_t count) | |
172 | { | |
173 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
174 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
175 | unsigned long temp = simple_strtoul(buf, NULL, 10) / 500; | |
176 | ||
177 | if (temp > 255) | |
178 | temp = 255; | |
179 | ||
59a030a9 | 180 | amb_write_byte(data, amb_reg_temp_mid(attr->index), temp); |
298c7524 DW |
181 | return count; |
182 | } | |
183 | ||
184 | static ssize_t store_amb_max(struct device *dev, | |
185 | struct device_attribute *devattr, | |
186 | const char *buf, | |
187 | size_t count) | |
188 | { | |
189 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
190 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
191 | unsigned long temp = simple_strtoul(buf, NULL, 10) / 500; | |
192 | ||
193 | if (temp > 255) | |
194 | temp = 255; | |
195 | ||
59a030a9 | 196 | amb_write_byte(data, amb_reg_temp_max(attr->index), temp); |
298c7524 DW |
197 | return count; |
198 | } | |
199 | ||
200 | static ssize_t show_amb_min(struct device *dev, | |
201 | struct device_attribute *devattr, | |
202 | char *buf) | |
203 | { | |
204 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
205 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
206 | return sprintf(buf, "%d\n", | |
59a030a9 | 207 | 500 * amb_read_byte(data, amb_reg_temp_min(attr->index))); |
298c7524 DW |
208 | } |
209 | ||
210 | static ssize_t show_amb_mid(struct device *dev, | |
211 | struct device_attribute *devattr, | |
212 | char *buf) | |
213 | { | |
214 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
215 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
216 | return sprintf(buf, "%d\n", | |
59a030a9 | 217 | 500 * amb_read_byte(data, amb_reg_temp_mid(attr->index))); |
298c7524 DW |
218 | } |
219 | ||
220 | static ssize_t show_amb_max(struct device *dev, | |
221 | struct device_attribute *devattr, | |
222 | char *buf) | |
223 | { | |
224 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
225 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
226 | return sprintf(buf, "%d\n", | |
59a030a9 | 227 | 500 * amb_read_byte(data, amb_reg_temp_max(attr->index))); |
298c7524 DW |
228 | } |
229 | ||
230 | static ssize_t show_amb_temp(struct device *dev, | |
231 | struct device_attribute *devattr, | |
232 | char *buf) | |
233 | { | |
234 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
235 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
236 | return sprintf(buf, "%d\n", | |
59a030a9 | 237 | 500 * amb_read_byte(data, amb_reg_temp(attr->index))); |
298c7524 DW |
238 | } |
239 | ||
240 | static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev) | |
241 | { | |
242 | int i, j, k, d = 0; | |
243 | u16 c; | |
244 | int res = 0; | |
245 | int num_ambs = 0; | |
246 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
247 | ||
248 | /* Count the number of AMBs found */ | |
249 | /* ignore the high-order bit, see "Ugly hack" comment above */ | |
250 | for (i = 0; i < MAX_MEM_CHANNELS; i++) | |
251 | num_ambs += hweight16(data->amb_present[i] & 0x7fff); | |
252 | ||
253 | /* Set up sysfs stuff */ | |
254 | data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB, | |
255 | GFP_KERNEL); | |
256 | if (!data->attrs) | |
257 | return -ENOMEM; | |
258 | data->num_attrs = 0; | |
259 | ||
260 | for (i = 0; i < MAX_MEM_CHANNELS; i++) { | |
261 | c = data->amb_present[i]; | |
262 | for (j = 0; j < REAL_MAX_AMBS_PER_CHANNEL; j++, c >>= 1) { | |
263 | struct i5k_device_attribute *iattr; | |
264 | ||
59a030a9 | 265 | k = amb_num_from_reg(i, j); |
298c7524 DW |
266 | if (!(c & 0x1)) |
267 | continue; | |
268 | d++; | |
269 | ||
270 | /* Temperature sysfs knob */ | |
271 | iattr = data->attrs + data->num_attrs; | |
272 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
273 | "temp%d_input", d); | |
274 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
275 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
276 | iattr->s_attr.dev_attr.show = show_amb_temp; | |
277 | iattr->s_attr.index = k; | |
278 | res = device_create_file(&pdev->dev, | |
279 | &iattr->s_attr.dev_attr); | |
280 | if (res) | |
281 | goto exit_remove; | |
282 | data->num_attrs++; | |
283 | ||
284 | /* Temperature min sysfs knob */ | |
285 | iattr = data->attrs + data->num_attrs; | |
286 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
287 | "temp%d_min", d); | |
288 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
289 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
290 | iattr->s_attr.dev_attr.show = show_amb_min; | |
291 | iattr->s_attr.dev_attr.store = store_amb_min; | |
292 | iattr->s_attr.index = k; | |
293 | res = device_create_file(&pdev->dev, | |
294 | &iattr->s_attr.dev_attr); | |
295 | if (res) | |
296 | goto exit_remove; | |
297 | data->num_attrs++; | |
298 | ||
299 | /* Temperature mid sysfs knob */ | |
300 | iattr = data->attrs + data->num_attrs; | |
301 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
302 | "temp%d_mid", d); | |
303 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
304 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
305 | iattr->s_attr.dev_attr.show = show_amb_mid; | |
306 | iattr->s_attr.dev_attr.store = store_amb_mid; | |
307 | iattr->s_attr.index = k; | |
308 | res = device_create_file(&pdev->dev, | |
309 | &iattr->s_attr.dev_attr); | |
310 | if (res) | |
311 | goto exit_remove; | |
312 | data->num_attrs++; | |
313 | ||
314 | /* Temperature max sysfs knob */ | |
315 | iattr = data->attrs + data->num_attrs; | |
316 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
317 | "temp%d_max", d); | |
318 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
319 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
320 | iattr->s_attr.dev_attr.show = show_amb_max; | |
321 | iattr->s_attr.dev_attr.store = store_amb_max; | |
322 | iattr->s_attr.index = k; | |
323 | res = device_create_file(&pdev->dev, | |
324 | &iattr->s_attr.dev_attr); | |
325 | if (res) | |
326 | goto exit_remove; | |
327 | data->num_attrs++; | |
328 | ||
329 | /* Temperature alarm sysfs knob */ | |
330 | iattr = data->attrs + data->num_attrs; | |
331 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
332 | "temp%d_alarm", d); | |
333 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
334 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
335 | iattr->s_attr.dev_attr.show = show_amb_alarm; | |
336 | iattr->s_attr.index = k; | |
337 | res = device_create_file(&pdev->dev, | |
338 | &iattr->s_attr.dev_attr); | |
339 | if (res) | |
340 | goto exit_remove; | |
341 | data->num_attrs++; | |
342 | } | |
343 | } | |
344 | ||
345 | res = device_create_file(&pdev->dev, &dev_attr_name); | |
346 | if (res) | |
347 | goto exit_remove; | |
348 | ||
349 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
350 | if (IS_ERR(data->hwmon_dev)) { | |
351 | res = PTR_ERR(data->hwmon_dev); | |
352 | goto exit_remove; | |
353 | } | |
354 | ||
355 | return res; | |
356 | ||
357 | exit_remove: | |
358 | device_remove_file(&pdev->dev, &dev_attr_name); | |
359 | for (i = 0; i < data->num_attrs; i++) | |
360 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
361 | kfree(data->attrs); | |
362 | ||
363 | return res; | |
364 | } | |
365 | ||
366 | static int __devinit i5k_amb_add(void) | |
367 | { | |
368 | int res = -ENODEV; | |
369 | ||
370 | /* only ever going to be one of these */ | |
371 | amb_pdev = platform_device_alloc(DRVNAME, 0); | |
372 | if (!amb_pdev) | |
373 | return -ENOMEM; | |
374 | ||
375 | res = platform_device_add(amb_pdev); | |
376 | if (res) | |
377 | goto err; | |
378 | return 0; | |
379 | ||
380 | err: | |
381 | platform_device_put(amb_pdev); | |
382 | return res; | |
383 | } | |
384 | ||
385 | static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data) | |
386 | { | |
387 | struct pci_dev *pcidev; | |
388 | u32 val32; | |
389 | int res = -ENODEV; | |
390 | ||
391 | /* Find AMB register memory space */ | |
392 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, | |
393 | PCI_DEVICE_ID_INTEL_5000_ERR, | |
394 | NULL); | |
395 | if (!pcidev) | |
396 | return -ENODEV; | |
397 | ||
398 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32)) | |
399 | goto out; | |
400 | data->amb_base = val32; | |
401 | ||
402 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32)) | |
403 | goto out; | |
404 | data->amb_len = val32; | |
405 | ||
406 | /* Is it big enough? */ | |
407 | if (data->amb_len < AMB_CONFIG_SIZE * MAX_AMBS) { | |
408 | dev_err(&pcidev->dev, "AMB region too small!\n"); | |
409 | goto out; | |
410 | } | |
411 | ||
412 | res = 0; | |
413 | out: | |
414 | pci_dev_put(pcidev); | |
415 | return res; | |
416 | } | |
417 | ||
418 | static int __devinit i5k_channel_probe(u16 *amb_present, unsigned long dev_id) | |
419 | { | |
420 | struct pci_dev *pcidev; | |
421 | u16 val16; | |
422 | int res = -ENODEV; | |
423 | ||
424 | /* Copy the DIMM presence map for these two channels */ | |
425 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); | |
426 | if (!pcidev) | |
427 | return -ENODEV; | |
428 | ||
429 | if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16)) | |
430 | goto out; | |
431 | amb_present[0] = val16; | |
432 | ||
433 | if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16)) | |
434 | goto out; | |
435 | amb_present[1] = val16; | |
436 | ||
437 | res = 0; | |
438 | ||
439 | out: | |
440 | pci_dev_put(pcidev); | |
441 | return res; | |
442 | } | |
443 | ||
444 | static int __devinit i5k_amb_probe(struct platform_device *pdev) | |
445 | { | |
446 | struct i5k_amb_data *data; | |
447 | struct resource *reso; | |
448 | int res = -ENODEV; | |
449 | ||
450 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
451 | if (!data) | |
452 | return -ENOMEM; | |
453 | ||
454 | /* Figure out where the AMB registers live */ | |
455 | res = i5k_find_amb_registers(data); | |
456 | if (res) | |
457 | goto err; | |
458 | ||
459 | /* Copy the DIMM presence map for the first two channels */ | |
460 | res = i5k_channel_probe(&data->amb_present[0], | |
461 | PCI_DEVICE_ID_INTEL_5000_FBD0); | |
462 | if (res) | |
463 | goto err; | |
464 | ||
465 | /* Copy the DIMM presence map for the optional second two channels */ | |
466 | i5k_channel_probe(&data->amb_present[2], | |
467 | PCI_DEVICE_ID_INTEL_5000_FBD1); | |
468 | ||
469 | /* Set up resource regions */ | |
470 | reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME); | |
471 | if (!reso) { | |
472 | res = -EBUSY; | |
473 | goto err; | |
474 | } | |
475 | ||
476 | data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len); | |
477 | if (!data->amb_mmio) { | |
478 | res = -EBUSY; | |
479 | goto err_map_failed; | |
480 | } | |
481 | ||
482 | platform_set_drvdata(pdev, data); | |
483 | ||
484 | res = i5k_amb_hwmon_init(pdev); | |
485 | if (res) | |
486 | goto err_init_failed; | |
487 | ||
488 | return res; | |
489 | ||
490 | err_init_failed: | |
491 | iounmap(data->amb_mmio); | |
492 | platform_set_drvdata(pdev, NULL); | |
493 | err_map_failed: | |
494 | release_mem_region(data->amb_base, data->amb_len); | |
495 | err: | |
496 | kfree(data); | |
497 | return res; | |
498 | } | |
499 | ||
500 | static int __devexit i5k_amb_remove(struct platform_device *pdev) | |
501 | { | |
502 | int i; | |
503 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
504 | ||
505 | hwmon_device_unregister(data->hwmon_dev); | |
506 | device_remove_file(&pdev->dev, &dev_attr_name); | |
507 | for (i = 0; i < data->num_attrs; i++) | |
508 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
509 | kfree(data->attrs); | |
510 | iounmap(data->amb_mmio); | |
511 | release_mem_region(data->amb_base, data->amb_len); | |
512 | platform_set_drvdata(pdev, NULL); | |
513 | kfree(data); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static struct platform_driver i5k_amb_driver = { | |
518 | .driver = { | |
519 | .owner = THIS_MODULE, | |
520 | .name = DRVNAME, | |
521 | }, | |
522 | .probe = i5k_amb_probe, | |
523 | .remove = __devexit_p(i5k_amb_remove), | |
524 | }; | |
525 | ||
526 | static int __init i5k_amb_init(void) | |
527 | { | |
528 | int res; | |
529 | ||
530 | res = platform_driver_register(&i5k_amb_driver); | |
531 | if (res) | |
532 | return res; | |
533 | ||
534 | res = i5k_amb_add(); | |
535 | if (res) | |
536 | platform_driver_unregister(&i5k_amb_driver); | |
537 | ||
538 | return res; | |
539 | } | |
540 | ||
541 | static void __exit i5k_amb_exit(void) | |
542 | { | |
543 | platform_device_unregister(amb_pdev); | |
544 | platform_driver_unregister(&i5k_amb_driver); | |
545 | } | |
546 | ||
547 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); | |
548 | MODULE_DESCRIPTION("Intel 5000 chipset FB-DIMM AMB temperature sensor"); | |
549 | MODULE_LICENSE("GPL"); | |
550 | ||
551 | module_init(i5k_amb_init); | |
552 | module_exit(i5k_amb_exit); |