Commit | Line | Data |
---|---|---|
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; | |
b8fdaf5a | 114 | unsigned long chipset_id; |
298c7524 DW |
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 | ||
59a030a9 DW |
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)) | |
298c7524 DW |
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 = simple_strtoul(buf, NULL, 10) / 500; | |
161 | ||
162 | if (temp > 255) | |
163 | temp = 255; | |
164 | ||
59a030a9 | 165 | amb_write_byte(data, amb_reg_temp_min(attr->index), temp); |
298c7524 DW |
166 | return count; |
167 | } | |
168 | ||
169 | static ssize_t store_amb_mid(struct device *dev, | |
170 | struct device_attribute *devattr, | |
171 | const char *buf, | |
172 | size_t count) | |
173 | { | |
174 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
175 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
176 | unsigned long temp = simple_strtoul(buf, NULL, 10) / 500; | |
177 | ||
178 | if (temp > 255) | |
179 | temp = 255; | |
180 | ||
59a030a9 | 181 | amb_write_byte(data, amb_reg_temp_mid(attr->index), temp); |
298c7524 DW |
182 | return count; |
183 | } | |
184 | ||
185 | static ssize_t store_amb_max(struct device *dev, | |
186 | struct device_attribute *devattr, | |
187 | const char *buf, | |
188 | size_t count) | |
189 | { | |
190 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
191 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
192 | unsigned long temp = simple_strtoul(buf, NULL, 10) / 500; | |
193 | ||
194 | if (temp > 255) | |
195 | temp = 255; | |
196 | ||
59a030a9 | 197 | amb_write_byte(data, amb_reg_temp_max(attr->index), temp); |
298c7524 DW |
198 | return count; |
199 | } | |
200 | ||
201 | static ssize_t show_amb_min(struct device *dev, | |
202 | struct device_attribute *devattr, | |
203 | char *buf) | |
204 | { | |
205 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
206 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
207 | return sprintf(buf, "%d\n", | |
59a030a9 | 208 | 500 * amb_read_byte(data, amb_reg_temp_min(attr->index))); |
298c7524 DW |
209 | } |
210 | ||
211 | static ssize_t show_amb_mid(struct device *dev, | |
212 | struct device_attribute *devattr, | |
213 | char *buf) | |
214 | { | |
215 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
216 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
217 | return sprintf(buf, "%d\n", | |
59a030a9 | 218 | 500 * amb_read_byte(data, amb_reg_temp_mid(attr->index))); |
298c7524 DW |
219 | } |
220 | ||
221 | static ssize_t show_amb_max(struct device *dev, | |
222 | struct device_attribute *devattr, | |
223 | char *buf) | |
224 | { | |
225 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
226 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
227 | return sprintf(buf, "%d\n", | |
59a030a9 | 228 | 500 * amb_read_byte(data, amb_reg_temp_max(attr->index))); |
298c7524 DW |
229 | } |
230 | ||
231 | static ssize_t show_amb_temp(struct device *dev, | |
232 | struct device_attribute *devattr, | |
233 | char *buf) | |
234 | { | |
235 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
236 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
237 | return sprintf(buf, "%d\n", | |
59a030a9 | 238 | 500 * amb_read_byte(data, amb_reg_temp(attr->index))); |
298c7524 DW |
239 | } |
240 | ||
241 | static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev) | |
242 | { | |
243 | int i, j, k, d = 0; | |
244 | u16 c; | |
245 | int res = 0; | |
246 | int num_ambs = 0; | |
247 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
248 | ||
249 | /* Count the number of AMBs found */ | |
250 | /* ignore the high-order bit, see "Ugly hack" comment above */ | |
251 | for (i = 0; i < MAX_MEM_CHANNELS; i++) | |
252 | num_ambs += hweight16(data->amb_present[i] & 0x7fff); | |
253 | ||
254 | /* Set up sysfs stuff */ | |
255 | data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB, | |
256 | GFP_KERNEL); | |
257 | if (!data->attrs) | |
258 | return -ENOMEM; | |
259 | data->num_attrs = 0; | |
260 | ||
261 | for (i = 0; i < MAX_MEM_CHANNELS; i++) { | |
262 | c = data->amb_present[i]; | |
263 | for (j = 0; j < REAL_MAX_AMBS_PER_CHANNEL; j++, c >>= 1) { | |
264 | struct i5k_device_attribute *iattr; | |
265 | ||
59a030a9 | 266 | k = amb_num_from_reg(i, j); |
298c7524 DW |
267 | if (!(c & 0x1)) |
268 | continue; | |
269 | d++; | |
270 | ||
271 | /* Temperature sysfs knob */ | |
272 | iattr = data->attrs + data->num_attrs; | |
273 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
274 | "temp%d_input", d); | |
275 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
276 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
277 | iattr->s_attr.dev_attr.show = show_amb_temp; | |
278 | iattr->s_attr.index = k; | |
279 | res = device_create_file(&pdev->dev, | |
280 | &iattr->s_attr.dev_attr); | |
281 | if (res) | |
282 | goto exit_remove; | |
283 | data->num_attrs++; | |
284 | ||
285 | /* Temperature min sysfs knob */ | |
286 | iattr = data->attrs + data->num_attrs; | |
287 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
288 | "temp%d_min", d); | |
289 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
290 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
291 | iattr->s_attr.dev_attr.show = show_amb_min; | |
292 | iattr->s_attr.dev_attr.store = store_amb_min; | |
293 | iattr->s_attr.index = k; | |
294 | res = device_create_file(&pdev->dev, | |
295 | &iattr->s_attr.dev_attr); | |
296 | if (res) | |
297 | goto exit_remove; | |
298 | data->num_attrs++; | |
299 | ||
300 | /* Temperature mid sysfs knob */ | |
301 | iattr = data->attrs + data->num_attrs; | |
302 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
303 | "temp%d_mid", d); | |
304 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
305 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
306 | iattr->s_attr.dev_attr.show = show_amb_mid; | |
307 | iattr->s_attr.dev_attr.store = store_amb_mid; | |
308 | iattr->s_attr.index = k; | |
309 | res = device_create_file(&pdev->dev, | |
310 | &iattr->s_attr.dev_attr); | |
311 | if (res) | |
312 | goto exit_remove; | |
313 | data->num_attrs++; | |
314 | ||
315 | /* Temperature max sysfs knob */ | |
316 | iattr = data->attrs + data->num_attrs; | |
317 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
318 | "temp%d_max", d); | |
319 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
320 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
321 | iattr->s_attr.dev_attr.show = show_amb_max; | |
322 | iattr->s_attr.dev_attr.store = store_amb_max; | |
323 | iattr->s_attr.index = k; | |
324 | res = device_create_file(&pdev->dev, | |
325 | &iattr->s_attr.dev_attr); | |
326 | if (res) | |
327 | goto exit_remove; | |
328 | data->num_attrs++; | |
329 | ||
330 | /* Temperature alarm sysfs knob */ | |
331 | iattr = data->attrs + data->num_attrs; | |
332 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
333 | "temp%d_alarm", d); | |
334 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
335 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
336 | iattr->s_attr.dev_attr.show = show_amb_alarm; | |
337 | iattr->s_attr.index = k; | |
338 | res = device_create_file(&pdev->dev, | |
339 | &iattr->s_attr.dev_attr); | |
340 | if (res) | |
341 | goto exit_remove; | |
342 | data->num_attrs++; | |
343 | } | |
344 | } | |
345 | ||
346 | res = device_create_file(&pdev->dev, &dev_attr_name); | |
347 | if (res) | |
348 | goto exit_remove; | |
349 | ||
350 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
351 | if (IS_ERR(data->hwmon_dev)) { | |
352 | res = PTR_ERR(data->hwmon_dev); | |
353 | goto exit_remove; | |
354 | } | |
355 | ||
356 | return res; | |
357 | ||
358 | exit_remove: | |
359 | device_remove_file(&pdev->dev, &dev_attr_name); | |
360 | for (i = 0; i < data->num_attrs; i++) | |
361 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
362 | kfree(data->attrs); | |
363 | ||
364 | return res; | |
365 | } | |
366 | ||
367 | static int __devinit i5k_amb_add(void) | |
368 | { | |
369 | int res = -ENODEV; | |
370 | ||
371 | /* only ever going to be one of these */ | |
372 | amb_pdev = platform_device_alloc(DRVNAME, 0); | |
373 | if (!amb_pdev) | |
374 | return -ENOMEM; | |
375 | ||
376 | res = platform_device_add(amb_pdev); | |
377 | if (res) | |
378 | goto err; | |
379 | return 0; | |
380 | ||
381 | err: | |
382 | platform_device_put(amb_pdev); | |
383 | return res; | |
384 | } | |
385 | ||
b8fdaf5a DW |
386 | static int __devinit i5k_find_amb_registers(struct i5k_amb_data *data, |
387 | unsigned long devid) | |
298c7524 DW |
388 | { |
389 | struct pci_dev *pcidev; | |
390 | u32 val32; | |
391 | int res = -ENODEV; | |
392 | ||
393 | /* Find AMB register memory space */ | |
394 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, | |
b8fdaf5a | 395 | devid, |
298c7524 DW |
396 | NULL); |
397 | if (!pcidev) | |
398 | return -ENODEV; | |
399 | ||
400 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32)) | |
401 | goto out; | |
402 | data->amb_base = val32; | |
403 | ||
404 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32)) | |
405 | goto out; | |
406 | data->amb_len = val32; | |
407 | ||
408 | /* Is it big enough? */ | |
409 | if (data->amb_len < AMB_CONFIG_SIZE * MAX_AMBS) { | |
410 | dev_err(&pcidev->dev, "AMB region too small!\n"); | |
411 | goto out; | |
412 | } | |
413 | ||
b8fdaf5a DW |
414 | data->chipset_id = devid; |
415 | ||
298c7524 DW |
416 | res = 0; |
417 | out: | |
418 | pci_dev_put(pcidev); | |
419 | return res; | |
420 | } | |
421 | ||
422 | static int __devinit i5k_channel_probe(u16 *amb_present, unsigned long dev_id) | |
423 | { | |
424 | struct pci_dev *pcidev; | |
425 | u16 val16; | |
426 | int res = -ENODEV; | |
427 | ||
428 | /* Copy the DIMM presence map for these two channels */ | |
429 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); | |
430 | if (!pcidev) | |
431 | return -ENODEV; | |
432 | ||
433 | if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16)) | |
434 | goto out; | |
435 | amb_present[0] = val16; | |
436 | ||
437 | if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16)) | |
438 | goto out; | |
439 | amb_present[1] = val16; | |
440 | ||
441 | res = 0; | |
442 | ||
443 | out: | |
444 | pci_dev_put(pcidev); | |
445 | return res; | |
446 | } | |
447 | ||
b8fdaf5a DW |
448 | static unsigned long i5k_channel_pci_id(struct i5k_amb_data *data, |
449 | unsigned long channel) | |
450 | { | |
451 | switch (data->chipset_id) { | |
452 | case PCI_DEVICE_ID_INTEL_5000_ERR: | |
453 | return PCI_DEVICE_ID_INTEL_5000_FBD0 + channel; | |
454 | case PCI_DEVICE_ID_INTEL_5400_ERR: | |
455 | return PCI_DEVICE_ID_INTEL_5400_FBD0 + channel; | |
456 | default: | |
457 | BUG(); | |
458 | } | |
459 | } | |
460 | ||
461 | static unsigned long chipset_ids[] = { | |
462 | PCI_DEVICE_ID_INTEL_5000_ERR, | |
463 | PCI_DEVICE_ID_INTEL_5400_ERR, | |
464 | 0 | |
465 | }; | |
466 | ||
298c7524 DW |
467 | static int __devinit i5k_amb_probe(struct platform_device *pdev) |
468 | { | |
469 | struct i5k_amb_data *data; | |
470 | struct resource *reso; | |
b8fdaf5a | 471 | int i; |
298c7524 DW |
472 | int res = -ENODEV; |
473 | ||
474 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
475 | if (!data) | |
476 | return -ENOMEM; | |
477 | ||
478 | /* Figure out where the AMB registers live */ | |
b8fdaf5a DW |
479 | i = 0; |
480 | do { | |
481 | res = i5k_find_amb_registers(data, chipset_ids[i]); | |
482 | i++; | |
483 | } while (res && chipset_ids[i]); | |
484 | ||
298c7524 DW |
485 | if (res) |
486 | goto err; | |
487 | ||
488 | /* Copy the DIMM presence map for the first two channels */ | |
489 | res = i5k_channel_probe(&data->amb_present[0], | |
b8fdaf5a | 490 | i5k_channel_pci_id(data, 0)); |
298c7524 DW |
491 | if (res) |
492 | goto err; | |
493 | ||
494 | /* Copy the DIMM presence map for the optional second two channels */ | |
495 | i5k_channel_probe(&data->amb_present[2], | |
b8fdaf5a | 496 | i5k_channel_pci_id(data, 1)); |
298c7524 DW |
497 | |
498 | /* Set up resource regions */ | |
499 | reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME); | |
500 | if (!reso) { | |
501 | res = -EBUSY; | |
502 | goto err; | |
503 | } | |
504 | ||
505 | data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len); | |
506 | if (!data->amb_mmio) { | |
507 | res = -EBUSY; | |
508 | goto err_map_failed; | |
509 | } | |
510 | ||
511 | platform_set_drvdata(pdev, data); | |
512 | ||
513 | res = i5k_amb_hwmon_init(pdev); | |
514 | if (res) | |
515 | goto err_init_failed; | |
516 | ||
517 | return res; | |
518 | ||
519 | err_init_failed: | |
520 | iounmap(data->amb_mmio); | |
521 | platform_set_drvdata(pdev, NULL); | |
522 | err_map_failed: | |
523 | release_mem_region(data->amb_base, data->amb_len); | |
524 | err: | |
525 | kfree(data); | |
526 | return res; | |
527 | } | |
528 | ||
529 | static int __devexit i5k_amb_remove(struct platform_device *pdev) | |
530 | { | |
531 | int i; | |
532 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
533 | ||
534 | hwmon_device_unregister(data->hwmon_dev); | |
535 | device_remove_file(&pdev->dev, &dev_attr_name); | |
536 | for (i = 0; i < data->num_attrs; i++) | |
537 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
538 | kfree(data->attrs); | |
539 | iounmap(data->amb_mmio); | |
540 | release_mem_region(data->amb_base, data->amb_len); | |
541 | platform_set_drvdata(pdev, NULL); | |
542 | kfree(data); | |
543 | return 0; | |
544 | } | |
545 | ||
546 | static struct platform_driver i5k_amb_driver = { | |
547 | .driver = { | |
548 | .owner = THIS_MODULE, | |
549 | .name = DRVNAME, | |
550 | }, | |
551 | .probe = i5k_amb_probe, | |
552 | .remove = __devexit_p(i5k_amb_remove), | |
553 | }; | |
554 | ||
555 | static int __init i5k_amb_init(void) | |
556 | { | |
557 | int res; | |
558 | ||
559 | res = platform_driver_register(&i5k_amb_driver); | |
560 | if (res) | |
561 | return res; | |
562 | ||
563 | res = i5k_amb_add(); | |
564 | if (res) | |
565 | platform_driver_unregister(&i5k_amb_driver); | |
566 | ||
567 | return res; | |
568 | } | |
569 | ||
570 | static void __exit i5k_amb_exit(void) | |
571 | { | |
572 | platform_device_unregister(amb_pdev); | |
573 | platform_driver_unregister(&i5k_amb_driver); | |
574 | } | |
575 | ||
576 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); | |
577 | MODULE_DESCRIPTION("Intel 5000 chipset FB-DIMM AMB temperature sensor"); | |
578 | MODULE_LICENSE("GPL"); | |
579 | ||
580 | module_init(i5k_amb_init); | |
581 | module_exit(i5k_amb_exit); |