Root/
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 <darrick.wong@oracle.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/hwmon.h> |
25 | #include <linux/hwmon-sysfs.h> |
26 | #include <linux/err.h> |
27 | #include <linux/mutex.h> |
28 | #include <linux/log2.h> |
29 | #include <linux/pci.h> |
30 | #include <linux/platform_device.h> |
31 | #include <linux/slab.h> |
32 | |
33 | #define DRVNAME "i5k_amb" |
34 | |
35 | #define I5K_REG_AMB_BASE_ADDR 0x48 |
36 | #define I5K_REG_AMB_LEN_ADDR 0x50 |
37 | #define I5K_REG_CHAN0_PRESENCE_ADDR 0x64 |
38 | #define I5K_REG_CHAN1_PRESENCE_ADDR 0x66 |
39 | |
40 | #define AMB_REG_TEMP_MIN_ADDR 0x80 |
41 | #define AMB_REG_TEMP_MID_ADDR 0x81 |
42 | #define AMB_REG_TEMP_MAX_ADDR 0x82 |
43 | #define AMB_REG_TEMP_STATUS_ADDR 0x84 |
44 | #define AMB_REG_TEMP_ADDR 0x85 |
45 | |
46 | #define AMB_CONFIG_SIZE 2048 |
47 | #define AMB_FUNC_3_OFFSET 768 |
48 | |
49 | static unsigned long amb_reg_temp_status(unsigned int amb) |
50 | { |
51 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_STATUS_ADDR + |
52 | AMB_CONFIG_SIZE * amb; |
53 | } |
54 | |
55 | static unsigned long amb_reg_temp_min(unsigned int amb) |
56 | { |
57 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MIN_ADDR + |
58 | AMB_CONFIG_SIZE * amb; |
59 | } |
60 | |
61 | static unsigned long amb_reg_temp_mid(unsigned int amb) |
62 | { |
63 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MID_ADDR + |
64 | AMB_CONFIG_SIZE * amb; |
65 | } |
66 | |
67 | static unsigned long amb_reg_temp_max(unsigned int amb) |
68 | { |
69 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MAX_ADDR + |
70 | AMB_CONFIG_SIZE * amb; |
71 | } |
72 | |
73 | static unsigned long amb_reg_temp(unsigned int amb) |
74 | { |
75 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_ADDR + |
76 | AMB_CONFIG_SIZE * amb; |
77 | } |
78 | |
79 | #define MAX_MEM_CHANNELS 4 |
80 | #define MAX_AMBS_PER_CHANNEL 16 |
81 | #define MAX_AMBS (MAX_MEM_CHANNELS * \ |
82 | MAX_AMBS_PER_CHANNEL) |
83 | #define CHANNEL_SHIFT 4 |
84 | #define DIMM_MASK 0xF |
85 | /* |
86 | * Ugly hack: For some reason the highest bit is set if there |
87 | * are _any_ DIMMs in the channel. Attempting to read from |
88 | * this "high-order" AMB results in a memory bus error, so |
89 | * for now we'll just ignore that top bit, even though that |
90 | * might prevent us from seeing the 16th DIMM in the channel. |
91 | */ |
92 | #define REAL_MAX_AMBS_PER_CHANNEL 15 |
93 | #define KNOBS_PER_AMB 6 |
94 | |
95 | static unsigned long amb_num_from_reg(unsigned int byte_num, unsigned int bit) |
96 | { |
97 | return byte_num * MAX_AMBS_PER_CHANNEL + bit; |
98 | } |
99 | |
100 | #define AMB_SYSFS_NAME_LEN 16 |
101 | struct i5k_device_attribute { |
102 | struct sensor_device_attribute s_attr; |
103 | char name[AMB_SYSFS_NAME_LEN]; |
104 | }; |
105 | |
106 | struct i5k_amb_data { |
107 | struct device *hwmon_dev; |
108 | |
109 | unsigned long amb_base; |
110 | unsigned long amb_len; |
111 | u16 amb_present[MAX_MEM_CHANNELS]; |
112 | void __iomem *amb_mmio; |
113 | struct i5k_device_attribute *attrs; |
114 | unsigned int num_attrs; |
115 | }; |
116 | |
117 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, |
118 | char *buf) |
119 | { |
120 | return sprintf(buf, "%s\n", DRVNAME); |
121 | } |
122 | |
123 | |
124 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
125 | |
126 | static struct platform_device *amb_pdev; |
127 | |
128 | static u8 amb_read_byte(struct i5k_amb_data *data, unsigned long offset) |
129 | { |
130 | return ioread8(data->amb_mmio + offset); |
131 | } |
132 | |
133 | static void amb_write_byte(struct i5k_amb_data *data, unsigned long offset, |
134 | u8 val) |
135 | { |
136 | iowrite8(val, data->amb_mmio + offset); |
137 | } |
138 | |
139 | static ssize_t show_amb_alarm(struct device *dev, |
140 | struct device_attribute *devattr, |
141 | char *buf) |
142 | { |
143 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
144 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
145 | |
146 | if (!(amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x20) && |
147 | (amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x8)) |
148 | return sprintf(buf, "1\n"); |
149 | else |
150 | return sprintf(buf, "0\n"); |
151 | } |
152 | |
153 | static ssize_t store_amb_min(struct device *dev, |
154 | struct device_attribute *devattr, |
155 | const char *buf, |
156 | size_t count) |
157 | { |
158 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
159 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
160 | unsigned long temp; |
161 | int ret = kstrtoul(buf, 10, &temp); |
162 | if (ret < 0) |
163 | return ret; |
164 | |
165 | temp = temp / 500; |
166 | if (temp > 255) |
167 | temp = 255; |
168 | |
169 | amb_write_byte(data, amb_reg_temp_min(attr->index), temp); |
170 | return count; |
171 | } |
172 | |
173 | static ssize_t store_amb_mid(struct device *dev, |
174 | struct device_attribute *devattr, |
175 | const char *buf, |
176 | size_t count) |
177 | { |
178 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
179 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
180 | unsigned long temp; |
181 | int ret = kstrtoul(buf, 10, &temp); |
182 | if (ret < 0) |
183 | return ret; |
184 | |
185 | temp = temp / 500; |
186 | if (temp > 255) |
187 | temp = 255; |
188 | |
189 | amb_write_byte(data, amb_reg_temp_mid(attr->index), temp); |
190 | return count; |
191 | } |
192 | |
193 | static ssize_t store_amb_max(struct device *dev, |
194 | struct device_attribute *devattr, |
195 | const char *buf, |
196 | size_t count) |
197 | { |
198 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
199 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
200 | unsigned long temp; |
201 | int ret = kstrtoul(buf, 10, &temp); |
202 | if (ret < 0) |
203 | return ret; |
204 | |
205 | temp = temp / 500; |
206 | if (temp > 255) |
207 | temp = 255; |
208 | |
209 | amb_write_byte(data, amb_reg_temp_max(attr->index), temp); |
210 | return count; |
211 | } |
212 | |
213 | static ssize_t show_amb_min(struct device *dev, |
214 | struct device_attribute *devattr, |
215 | char *buf) |
216 | { |
217 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
218 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
219 | return sprintf(buf, "%d\n", |
220 | 500 * amb_read_byte(data, amb_reg_temp_min(attr->index))); |
221 | } |
222 | |
223 | static ssize_t show_amb_mid(struct device *dev, |
224 | struct device_attribute *devattr, |
225 | char *buf) |
226 | { |
227 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
228 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
229 | return sprintf(buf, "%d\n", |
230 | 500 * amb_read_byte(data, amb_reg_temp_mid(attr->index))); |
231 | } |
232 | |
233 | static ssize_t show_amb_max(struct device *dev, |
234 | struct device_attribute *devattr, |
235 | char *buf) |
236 | { |
237 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
238 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
239 | return sprintf(buf, "%d\n", |
240 | 500 * amb_read_byte(data, amb_reg_temp_max(attr->index))); |
241 | } |
242 | |
243 | static ssize_t show_amb_temp(struct device *dev, |
244 | struct device_attribute *devattr, |
245 | char *buf) |
246 | { |
247 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
248 | struct i5k_amb_data *data = dev_get_drvdata(dev); |
249 | return sprintf(buf, "%d\n", |
250 | 500 * amb_read_byte(data, amb_reg_temp(attr->index))); |
251 | } |
252 | |
253 | static ssize_t show_label(struct device *dev, |
254 | struct device_attribute *devattr, |
255 | char *buf) |
256 | { |
257 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
258 | |
259 | return sprintf(buf, "Ch. %d DIMM %d\n", attr->index >> CHANNEL_SHIFT, |
260 | attr->index & DIMM_MASK); |
261 | } |
262 | |
263 | static int i5k_amb_hwmon_init(struct platform_device *pdev) |
264 | { |
265 | int i, j, k, d = 0; |
266 | u16 c; |
267 | int res = 0; |
268 | int num_ambs = 0; |
269 | struct i5k_amb_data *data = platform_get_drvdata(pdev); |
270 | |
271 | /* Count the number of AMBs found */ |
272 | /* ignore the high-order bit, see "Ugly hack" comment above */ |
273 | for (i = 0; i < MAX_MEM_CHANNELS; i++) |
274 | num_ambs += hweight16(data->amb_present[i] & 0x7fff); |
275 | |
276 | /* Set up sysfs stuff */ |
277 | data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB, |
278 | GFP_KERNEL); |
279 | if (!data->attrs) |
280 | return -ENOMEM; |
281 | data->num_attrs = 0; |
282 | |
283 | for (i = 0; i < MAX_MEM_CHANNELS; i++) { |
284 | c = data->amb_present[i]; |
285 | for (j = 0; j < REAL_MAX_AMBS_PER_CHANNEL; j++, c >>= 1) { |
286 | struct i5k_device_attribute *iattr; |
287 | |
288 | k = amb_num_from_reg(i, j); |
289 | if (!(c & 0x1)) |
290 | continue; |
291 | d++; |
292 | |
293 | /* sysfs label */ |
294 | iattr = data->attrs + data->num_attrs; |
295 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
296 | "temp%d_label", d); |
297 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
298 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; |
299 | iattr->s_attr.dev_attr.show = show_label; |
300 | iattr->s_attr.index = k; |
301 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
302 | res = device_create_file(&pdev->dev, |
303 | &iattr->s_attr.dev_attr); |
304 | if (res) |
305 | goto exit_remove; |
306 | data->num_attrs++; |
307 | |
308 | /* Temperature sysfs knob */ |
309 | iattr = data->attrs + data->num_attrs; |
310 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
311 | "temp%d_input", d); |
312 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
313 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; |
314 | iattr->s_attr.dev_attr.show = show_amb_temp; |
315 | iattr->s_attr.index = k; |
316 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
317 | res = device_create_file(&pdev->dev, |
318 | &iattr->s_attr.dev_attr); |
319 | if (res) |
320 | goto exit_remove; |
321 | data->num_attrs++; |
322 | |
323 | /* Temperature min sysfs knob */ |
324 | iattr = data->attrs + data->num_attrs; |
325 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
326 | "temp%d_min", d); |
327 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
328 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; |
329 | iattr->s_attr.dev_attr.show = show_amb_min; |
330 | iattr->s_attr.dev_attr.store = store_amb_min; |
331 | iattr->s_attr.index = k; |
332 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
333 | res = device_create_file(&pdev->dev, |
334 | &iattr->s_attr.dev_attr); |
335 | if (res) |
336 | goto exit_remove; |
337 | data->num_attrs++; |
338 | |
339 | /* Temperature mid sysfs knob */ |
340 | iattr = data->attrs + data->num_attrs; |
341 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
342 | "temp%d_mid", d); |
343 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
344 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; |
345 | iattr->s_attr.dev_attr.show = show_amb_mid; |
346 | iattr->s_attr.dev_attr.store = store_amb_mid; |
347 | iattr->s_attr.index = k; |
348 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
349 | res = device_create_file(&pdev->dev, |
350 | &iattr->s_attr.dev_attr); |
351 | if (res) |
352 | goto exit_remove; |
353 | data->num_attrs++; |
354 | |
355 | /* Temperature max sysfs knob */ |
356 | iattr = data->attrs + data->num_attrs; |
357 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
358 | "temp%d_max", d); |
359 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
360 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; |
361 | iattr->s_attr.dev_attr.show = show_amb_max; |
362 | iattr->s_attr.dev_attr.store = store_amb_max; |
363 | iattr->s_attr.index = k; |
364 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
365 | res = device_create_file(&pdev->dev, |
366 | &iattr->s_attr.dev_attr); |
367 | if (res) |
368 | goto exit_remove; |
369 | data->num_attrs++; |
370 | |
371 | /* Temperature alarm sysfs knob */ |
372 | iattr = data->attrs + data->num_attrs; |
373 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, |
374 | "temp%d_alarm", d); |
375 | iattr->s_attr.dev_attr.attr.name = iattr->name; |
376 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; |
377 | iattr->s_attr.dev_attr.show = show_amb_alarm; |
378 | iattr->s_attr.index = k; |
379 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
380 | res = device_create_file(&pdev->dev, |
381 | &iattr->s_attr.dev_attr); |
382 | if (res) |
383 | goto exit_remove; |
384 | data->num_attrs++; |
385 | } |
386 | } |
387 | |
388 | res = device_create_file(&pdev->dev, &dev_attr_name); |
389 | if (res) |
390 | goto exit_remove; |
391 | |
392 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
393 | if (IS_ERR(data->hwmon_dev)) { |
394 | res = PTR_ERR(data->hwmon_dev); |
395 | goto exit_remove; |
396 | } |
397 | |
398 | return res; |
399 | |
400 | exit_remove: |
401 | device_remove_file(&pdev->dev, &dev_attr_name); |
402 | for (i = 0; i < data->num_attrs; i++) |
403 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); |
404 | kfree(data->attrs); |
405 | |
406 | return res; |
407 | } |
408 | |
409 | static int i5k_amb_add(void) |
410 | { |
411 | int res = -ENODEV; |
412 | |
413 | /* only ever going to be one of these */ |
414 | amb_pdev = platform_device_alloc(DRVNAME, 0); |
415 | if (!amb_pdev) |
416 | return -ENOMEM; |
417 | |
418 | res = platform_device_add(amb_pdev); |
419 | if (res) |
420 | goto err; |
421 | return 0; |
422 | |
423 | err: |
424 | platform_device_put(amb_pdev); |
425 | return res; |
426 | } |
427 | |
428 | static int i5k_find_amb_registers(struct i5k_amb_data *data, |
429 | unsigned long devid) |
430 | { |
431 | struct pci_dev *pcidev; |
432 | u32 val32; |
433 | int res = -ENODEV; |
434 | |
435 | /* Find AMB register memory space */ |
436 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, |
437 | devid, |
438 | NULL); |
439 | if (!pcidev) |
440 | return -ENODEV; |
441 | |
442 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32)) |
443 | goto out; |
444 | data->amb_base = val32; |
445 | |
446 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32)) |
447 | goto out; |
448 | data->amb_len = val32; |
449 | |
450 | /* Is it big enough? */ |
451 | if (data->amb_len < AMB_CONFIG_SIZE * MAX_AMBS) { |
452 | dev_err(&pcidev->dev, "AMB region too small!\n"); |
453 | goto out; |
454 | } |
455 | |
456 | res = 0; |
457 | out: |
458 | pci_dev_put(pcidev); |
459 | return res; |
460 | } |
461 | |
462 | static int i5k_channel_probe(u16 *amb_present, unsigned long dev_id) |
463 | { |
464 | struct pci_dev *pcidev; |
465 | u16 val16; |
466 | int res = -ENODEV; |
467 | |
468 | /* Copy the DIMM presence map for these two channels */ |
469 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); |
470 | if (!pcidev) |
471 | return -ENODEV; |
472 | |
473 | if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16)) |
474 | goto out; |
475 | amb_present[0] = val16; |
476 | |
477 | if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16)) |
478 | goto out; |
479 | amb_present[1] = val16; |
480 | |
481 | res = 0; |
482 | |
483 | out: |
484 | pci_dev_put(pcidev); |
485 | return res; |
486 | } |
487 | |
488 | static struct { |
489 | unsigned long err; |
490 | unsigned long fbd0; |
491 | } chipset_ids[] = { |
492 | { PCI_DEVICE_ID_INTEL_5000_ERR, PCI_DEVICE_ID_INTEL_5000_FBD0 }, |
493 | { PCI_DEVICE_ID_INTEL_5400_ERR, PCI_DEVICE_ID_INTEL_5400_FBD0 }, |
494 | { 0, 0 } |
495 | }; |
496 | |
497 | #ifdef MODULE |
498 | static struct pci_device_id i5k_amb_ids[] = { |
499 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, |
500 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) }, |
501 | { 0, } |
502 | }; |
503 | MODULE_DEVICE_TABLE(pci, i5k_amb_ids); |
504 | #endif |
505 | |
506 | static int i5k_amb_probe(struct platform_device *pdev) |
507 | { |
508 | struct i5k_amb_data *data; |
509 | struct resource *reso; |
510 | int i, res; |
511 | |
512 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
513 | if (!data) |
514 | return -ENOMEM; |
515 | |
516 | /* Figure out where the AMB registers live */ |
517 | i = 0; |
518 | do { |
519 | res = i5k_find_amb_registers(data, chipset_ids[i].err); |
520 | if (res == 0) |
521 | break; |
522 | i++; |
523 | } while (chipset_ids[i].err); |
524 | |
525 | if (res) |
526 | goto err; |
527 | |
528 | /* Copy the DIMM presence map for the first two channels */ |
529 | res = i5k_channel_probe(&data->amb_present[0], chipset_ids[i].fbd0); |
530 | if (res) |
531 | goto err; |
532 | |
533 | /* Copy the DIMM presence map for the optional second two channels */ |
534 | i5k_channel_probe(&data->amb_present[2], chipset_ids[i].fbd0 + 1); |
535 | |
536 | /* Set up resource regions */ |
537 | reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME); |
538 | if (!reso) { |
539 | res = -EBUSY; |
540 | goto err; |
541 | } |
542 | |
543 | data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len); |
544 | if (!data->amb_mmio) { |
545 | res = -EBUSY; |
546 | goto err_map_failed; |
547 | } |
548 | |
549 | platform_set_drvdata(pdev, data); |
550 | |
551 | res = i5k_amb_hwmon_init(pdev); |
552 | if (res) |
553 | goto err_init_failed; |
554 | |
555 | return res; |
556 | |
557 | err_init_failed: |
558 | iounmap(data->amb_mmio); |
559 | err_map_failed: |
560 | release_mem_region(data->amb_base, data->amb_len); |
561 | err: |
562 | kfree(data); |
563 | return res; |
564 | } |
565 | |
566 | static int i5k_amb_remove(struct platform_device *pdev) |
567 | { |
568 | int i; |
569 | struct i5k_amb_data *data = platform_get_drvdata(pdev); |
570 | |
571 | hwmon_device_unregister(data->hwmon_dev); |
572 | device_remove_file(&pdev->dev, &dev_attr_name); |
573 | for (i = 0; i < data->num_attrs; i++) |
574 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); |
575 | kfree(data->attrs); |
576 | iounmap(data->amb_mmio); |
577 | release_mem_region(data->amb_base, data->amb_len); |
578 | kfree(data); |
579 | return 0; |
580 | } |
581 | |
582 | static struct platform_driver i5k_amb_driver = { |
583 | .driver = { |
584 | .owner = THIS_MODULE, |
585 | .name = DRVNAME, |
586 | }, |
587 | .probe = i5k_amb_probe, |
588 | .remove = i5k_amb_remove, |
589 | }; |
590 | |
591 | static int __init i5k_amb_init(void) |
592 | { |
593 | int res; |
594 | |
595 | res = platform_driver_register(&i5k_amb_driver); |
596 | if (res) |
597 | return res; |
598 | |
599 | res = i5k_amb_add(); |
600 | if (res) |
601 | platform_driver_unregister(&i5k_amb_driver); |
602 | |
603 | return res; |
604 | } |
605 | |
606 | static void __exit i5k_amb_exit(void) |
607 | { |
608 | platform_device_unregister(amb_pdev); |
609 | platform_driver_unregister(&i5k_amb_driver); |
610 | } |
611 | |
612 | MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>"); |
613 | MODULE_DESCRIPTION("Intel 5000 chipset FB-DIMM AMB temperature sensor"); |
614 | MODULE_LICENSE("GPL"); |
615 | |
616 | module_init(i5k_amb_init); |
617 | module_exit(i5k_amb_exit); |
618 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9