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24c1aa85 NG |
1 | /* |
2 | * IBM PowerNV platform sensors for temperature/fan/voltage/power | |
3 | * Copyright (C) 2014 IBM | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program. | |
17 | */ | |
18 | ||
19 | #define DRVNAME "ibmpowernv" | |
20 | #define pr_fmt(fmt) DRVNAME ": " fmt | |
21 | ||
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/hwmon.h> | |
26 | #include <linux/hwmon-sysfs.h> | |
27 | #include <linux/of.h> | |
28 | #include <linux/slab.h> | |
29 | ||
30 | #include <linux/platform_device.h> | |
31 | #include <asm/opal.h> | |
32 | #include <linux/err.h> | |
3df2f59f | 33 | #include <asm/cputhreads.h> |
8416915c | 34 | #include <asm/smp.h> |
24c1aa85 NG |
35 | |
36 | #define MAX_ATTR_LEN 32 | |
2bcd3787 | 37 | #define MAX_LABEL_LEN 64 |
24c1aa85 NG |
38 | |
39 | /* Sensor suffix name from DT */ | |
40 | #define DT_FAULT_ATTR_SUFFIX "faulted" | |
41 | #define DT_DATA_ATTR_SUFFIX "data" | |
42 | #define DT_THRESHOLD_ATTR_SUFFIX "thrs" | |
43 | ||
44 | /* | |
45 | * Enumerates all the types of sensors in the POWERNV platform and does index | |
46 | * into 'struct sensor_group' | |
47 | */ | |
48 | enum sensors { | |
49 | FAN, | |
96124610 | 50 | TEMP, |
24c1aa85 NG |
51 | POWER_SUPPLY, |
52 | POWER_INPUT, | |
3a2b3d37 | 53 | CURRENT, |
43d2974b | 54 | ENERGY, |
24c1aa85 NG |
55 | MAX_SENSOR_TYPE, |
56 | }; | |
57 | ||
14681637 CLG |
58 | #define INVALID_INDEX (-1U) |
59 | ||
3ab52160 CLG |
60 | /* |
61 | * 'compatible' string properties for sensor types as defined in old | |
62 | * PowerNV firmware (skiboot). These are ordered as 'enum sensors'. | |
63 | */ | |
64 | static const char * const legacy_compatibles[] = { | |
65 | "ibm,opal-sensor-cooling-fan", | |
66 | "ibm,opal-sensor-amb-temp", | |
67 | "ibm,opal-sensor-power-supply", | |
68 | "ibm,opal-sensor-power" | |
69 | }; | |
70 | ||
24c1aa85 | 71 | static struct sensor_group { |
3ab52160 | 72 | const char *name; /* matches property 'sensor-type' */ |
24c1aa85 NG |
73 | struct attribute_group group; |
74 | u32 attr_count; | |
fcaf57b6 | 75 | u32 hwmon_index; |
24c1aa85 | 76 | } sensor_groups[] = { |
3ab52160 CLG |
77 | { "fan" }, |
78 | { "temp" }, | |
79 | { "in" }, | |
3a2b3d37 SB |
80 | { "power" }, |
81 | { "curr" }, | |
43d2974b | 82 | { "energy" }, |
24c1aa85 NG |
83 | }; |
84 | ||
85 | struct sensor_data { | |
86 | u32 id; /* An opaque id of the firmware for each sensor */ | |
fcaf57b6 CLG |
87 | u32 hwmon_index; |
88 | u32 opal_index; | |
24c1aa85 | 89 | enum sensors type; |
2bcd3787 | 90 | char label[MAX_LABEL_LEN]; |
24c1aa85 NG |
91 | char name[MAX_ATTR_LEN]; |
92 | struct device_attribute dev_attr; | |
93 | }; | |
94 | ||
95 | struct platform_data { | |
96 | const struct attribute_group *attr_groups[MAX_SENSOR_TYPE + 1]; | |
97 | u32 sensors_count; /* Total count of sensors from each group */ | |
98 | }; | |
99 | ||
24c1aa85 NG |
100 | static ssize_t show_sensor(struct device *dev, struct device_attribute *devattr, |
101 | char *buf) | |
102 | { | |
103 | struct sensor_data *sdata = container_of(devattr, struct sensor_data, | |
104 | dev_attr); | |
105 | ssize_t ret; | |
3c8c049a SB |
106 | u64 x; |
107 | ||
108 | ret = opal_get_sensor_data_u64(sdata->id, &x); | |
24c1aa85 | 109 | |
24c1aa85 NG |
110 | if (ret) |
111 | return ret; | |
112 | ||
113 | /* Convert temperature to milli-degrees */ | |
96124610 | 114 | if (sdata->type == TEMP) |
24c1aa85 NG |
115 | x *= 1000; |
116 | /* Convert power to micro-watts */ | |
117 | else if (sdata->type == POWER_INPUT) | |
118 | x *= 1000000; | |
119 | ||
3c8c049a | 120 | return sprintf(buf, "%llu\n", x); |
24c1aa85 NG |
121 | } |
122 | ||
2bcd3787 CLG |
123 | static ssize_t show_label(struct device *dev, struct device_attribute *devattr, |
124 | char *buf) | |
125 | { | |
126 | struct sensor_data *sdata = container_of(devattr, struct sensor_data, | |
127 | dev_attr); | |
128 | ||
129 | return sprintf(buf, "%s\n", sdata->label); | |
130 | } | |
131 | ||
3df2f59f CLG |
132 | static int __init get_logical_cpu(int hwcpu) |
133 | { | |
134 | int cpu; | |
135 | ||
136 | for_each_possible_cpu(cpu) | |
137 | if (get_hard_smp_processor_id(cpu) == hwcpu) | |
138 | return cpu; | |
139 | ||
140 | return -ENOENT; | |
141 | } | |
142 | ||
2bcd3787 CLG |
143 | static void __init make_sensor_label(struct device_node *np, |
144 | struct sensor_data *sdata, | |
145 | const char *label) | |
146 | { | |
3df2f59f | 147 | u32 id; |
2bcd3787 CLG |
148 | size_t n; |
149 | ||
150 | n = snprintf(sdata->label, sizeof(sdata->label), "%s", label); | |
3df2f59f CLG |
151 | |
152 | /* | |
153 | * Core temp pretty print | |
154 | */ | |
155 | if (!of_property_read_u32(np, "ibm,pir", &id)) { | |
156 | int cpuid = get_logical_cpu(id); | |
157 | ||
158 | if (cpuid >= 0) | |
159 | /* | |
160 | * The digital thermal sensors are associated | |
acf32964 | 161 | * with a core. |
3df2f59f CLG |
162 | */ |
163 | n += snprintf(sdata->label + n, | |
acf32964 MN |
164 | sizeof(sdata->label) - n, " %d", |
165 | cpuid); | |
3df2f59f CLG |
166 | else |
167 | n += snprintf(sdata->label + n, | |
168 | sizeof(sdata->label) - n, " phy%d", id); | |
169 | } | |
170 | ||
171 | /* | |
172 | * Membuffer pretty print | |
173 | */ | |
174 | if (!of_property_read_u32(np, "ibm,chip-id", &id)) | |
175 | n += snprintf(sdata->label + n, sizeof(sdata->label) - n, | |
176 | " %d", id & 0xffff); | |
2bcd3787 CLG |
177 | } |
178 | ||
179 | static int get_sensor_index_attr(const char *name, u32 *index, char *attr) | |
24c1aa85 NG |
180 | { |
181 | char *hash_pos = strchr(name, '#'); | |
182 | char buf[8] = { 0 }; | |
183 | char *dash_pos; | |
184 | u32 copy_len; | |
185 | int err; | |
186 | ||
187 | if (!hash_pos) | |
188 | return -EINVAL; | |
189 | ||
190 | dash_pos = strchr(hash_pos, '-'); | |
191 | if (!dash_pos) | |
192 | return -EINVAL; | |
193 | ||
194 | copy_len = dash_pos - hash_pos - 1; | |
195 | if (copy_len >= sizeof(buf)) | |
196 | return -EINVAL; | |
197 | ||
198 | strncpy(buf, hash_pos + 1, copy_len); | |
199 | ||
200 | err = kstrtou32(buf, 10, index); | |
201 | if (err) | |
202 | return err; | |
203 | ||
204 | strncpy(attr, dash_pos + 1, MAX_ATTR_LEN); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
ccc9ac6c CLG |
209 | static const char *convert_opal_attr_name(enum sensors type, |
210 | const char *opal_attr) | |
211 | { | |
212 | const char *attr_name = NULL; | |
213 | ||
214 | if (!strcmp(opal_attr, DT_FAULT_ATTR_SUFFIX)) { | |
215 | attr_name = "fault"; | |
216 | } else if (!strcmp(opal_attr, DT_DATA_ATTR_SUFFIX)) { | |
217 | attr_name = "input"; | |
218 | } else if (!strcmp(opal_attr, DT_THRESHOLD_ATTR_SUFFIX)) { | |
219 | if (type == TEMP) | |
220 | attr_name = "max"; | |
221 | else if (type == FAN) | |
222 | attr_name = "min"; | |
223 | } | |
224 | ||
225 | return attr_name; | |
226 | } | |
227 | ||
24c1aa85 NG |
228 | /* |
229 | * This function translates the DT node name into the 'hwmon' attribute name. | |
230 | * IBMPOWERNV device node appear like cooling-fan#2-data, amb-temp#1-thrs etc. | |
231 | * which need to be mapped as fan2_input, temp1_max respectively before | |
232 | * populating them inside hwmon device class. | |
233 | */ | |
f9f54f16 CLG |
234 | static const char *parse_opal_node_name(const char *node_name, |
235 | enum sensors type, u32 *index) | |
24c1aa85 NG |
236 | { |
237 | char attr_suffix[MAX_ATTR_LEN]; | |
ccc9ac6c | 238 | const char *attr_name; |
24c1aa85 NG |
239 | int err; |
240 | ||
f9f54f16 CLG |
241 | err = get_sensor_index_attr(node_name, index, attr_suffix); |
242 | if (err) | |
243 | return ERR_PTR(err); | |
24c1aa85 | 244 | |
ccc9ac6c CLG |
245 | attr_name = convert_opal_attr_name(type, attr_suffix); |
246 | if (!attr_name) | |
f9f54f16 | 247 | return ERR_PTR(-ENOENT); |
24c1aa85 | 248 | |
f9f54f16 | 249 | return attr_name; |
24c1aa85 NG |
250 | } |
251 | ||
c4ad4720 CLG |
252 | static int get_sensor_type(struct device_node *np) |
253 | { | |
254 | enum sensors type; | |
14681637 | 255 | const char *str; |
c4ad4720 | 256 | |
3ab52160 CLG |
257 | for (type = 0; type < ARRAY_SIZE(legacy_compatibles); type++) { |
258 | if (of_device_is_compatible(np, legacy_compatibles[type])) | |
c4ad4720 CLG |
259 | return type; |
260 | } | |
14681637 CLG |
261 | |
262 | /* | |
263 | * Let's check if we have a newer device tree | |
264 | */ | |
265 | if (!of_device_is_compatible(np, "ibm,opal-sensor")) | |
266 | return MAX_SENSOR_TYPE; | |
267 | ||
268 | if (of_property_read_string(np, "sensor-type", &str)) | |
269 | return MAX_SENSOR_TYPE; | |
270 | ||
271 | for (type = 0; type < MAX_SENSOR_TYPE; type++) | |
272 | if (!strcmp(str, sensor_groups[type].name)) | |
273 | return type; | |
274 | ||
c4ad4720 CLG |
275 | return MAX_SENSOR_TYPE; |
276 | } | |
277 | ||
fcaf57b6 CLG |
278 | static u32 get_sensor_hwmon_index(struct sensor_data *sdata, |
279 | struct sensor_data *sdata_table, int count) | |
280 | { | |
281 | int i; | |
282 | ||
14681637 CLG |
283 | /* |
284 | * We don't use the OPAL index on newer device trees | |
285 | */ | |
286 | if (sdata->opal_index != INVALID_INDEX) { | |
287 | for (i = 0; i < count; i++) | |
288 | if (sdata_table[i].opal_index == sdata->opal_index && | |
289 | sdata_table[i].type == sdata->type) | |
290 | return sdata_table[i].hwmon_index; | |
291 | } | |
fcaf57b6 CLG |
292 | return ++sensor_groups[sdata->type].hwmon_index; |
293 | } | |
294 | ||
8de303ba | 295 | static int populate_attr_groups(struct platform_device *pdev) |
24c1aa85 NG |
296 | { |
297 | struct platform_data *pdata = platform_get_drvdata(pdev); | |
298 | const struct attribute_group **pgroups = pdata->attr_groups; | |
299 | struct device_node *opal, *np; | |
300 | enum sensors type; | |
301 | ||
302 | opal = of_find_node_by_path("/ibm,opal/sensors"); | |
24c1aa85 | 303 | for_each_child_of_node(opal, np) { |
2bcd3787 CLG |
304 | const char *label; |
305 | ||
24c1aa85 NG |
306 | if (np->name == NULL) |
307 | continue; | |
308 | ||
c4ad4720 | 309 | type = get_sensor_type(np); |
2bcd3787 CLG |
310 | if (type == MAX_SENSOR_TYPE) |
311 | continue; | |
312 | ||
313 | sensor_groups[type].attr_count++; | |
314 | ||
315 | /* | |
996cf5a5 | 316 | * add attributes for labels, min and max |
2bcd3787 CLG |
317 | */ |
318 | if (!of_property_read_string(np, "label", &label)) | |
c4ad4720 | 319 | sensor_groups[type].attr_count++; |
996cf5a5 SB |
320 | if (of_find_property(np, "sensor-data-min", NULL)) |
321 | sensor_groups[type].attr_count++; | |
322 | if (of_find_property(np, "sensor-data-max", NULL)) | |
323 | sensor_groups[type].attr_count++; | |
24c1aa85 NG |
324 | } |
325 | ||
326 | of_node_put(opal); | |
327 | ||
328 | for (type = 0; type < MAX_SENSOR_TYPE; type++) { | |
a86854d0 KC |
329 | sensor_groups[type].group.attrs = devm_kcalloc(&pdev->dev, |
330 | sensor_groups[type].attr_count + 1, | |
331 | sizeof(struct attribute *), | |
24c1aa85 NG |
332 | GFP_KERNEL); |
333 | if (!sensor_groups[type].group.attrs) | |
334 | return -ENOMEM; | |
335 | ||
336 | pgroups[type] = &sensor_groups[type].group; | |
337 | pdata->sensors_count += sensor_groups[type].attr_count; | |
338 | sensor_groups[type].attr_count = 0; | |
339 | } | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
9e4f74b1 CLG |
344 | static void create_hwmon_attr(struct sensor_data *sdata, const char *attr_name, |
345 | ssize_t (*show)(struct device *dev, | |
346 | struct device_attribute *attr, | |
347 | char *buf)) | |
348 | { | |
349 | snprintf(sdata->name, MAX_ATTR_LEN, "%s%d_%s", | |
350 | sensor_groups[sdata->type].name, sdata->hwmon_index, | |
351 | attr_name); | |
352 | ||
353 | sysfs_attr_init(&sdata->dev_attr.attr); | |
354 | sdata->dev_attr.attr.name = sdata->name; | |
355 | sdata->dev_attr.attr.mode = S_IRUGO; | |
356 | sdata->dev_attr.show = show; | |
357 | } | |
358 | ||
996cf5a5 SB |
359 | static void populate_sensor(struct sensor_data *sdata, int od, int hd, int sid, |
360 | const char *attr_name, enum sensors type, | |
361 | const struct attribute_group *pgroup, | |
362 | ssize_t (*show)(struct device *dev, | |
363 | struct device_attribute *attr, | |
364 | char *buf)) | |
365 | { | |
366 | sdata->id = sid; | |
367 | sdata->type = type; | |
368 | sdata->opal_index = od; | |
369 | sdata->hwmon_index = hd; | |
370 | create_hwmon_attr(sdata, attr_name, show); | |
371 | pgroup->attrs[sensor_groups[type].attr_count++] = &sdata->dev_attr.attr; | |
372 | } | |
373 | ||
374 | static char *get_max_attr(enum sensors type) | |
375 | { | |
376 | switch (type) { | |
377 | case POWER_INPUT: | |
378 | return "input_highest"; | |
379 | default: | |
380 | return "highest"; | |
381 | } | |
382 | } | |
383 | ||
384 | static char *get_min_attr(enum sensors type) | |
385 | { | |
386 | switch (type) { | |
387 | case POWER_INPUT: | |
388 | return "input_lowest"; | |
389 | default: | |
390 | return "lowest"; | |
391 | } | |
392 | } | |
393 | ||
24c1aa85 NG |
394 | /* |
395 | * Iterate through the device tree for each child of 'sensors' node, create | |
396 | * a sysfs attribute file, the file is named by translating the DT node name | |
397 | * to the name required by the higher 'hwmon' driver like fan1_input, temp1_max | |
398 | * etc.. | |
399 | */ | |
8de303ba | 400 | static int create_device_attrs(struct platform_device *pdev) |
24c1aa85 NG |
401 | { |
402 | struct platform_data *pdata = platform_get_drvdata(pdev); | |
403 | const struct attribute_group **pgroups = pdata->attr_groups; | |
404 | struct device_node *opal, *np; | |
405 | struct sensor_data *sdata; | |
18d03f3c | 406 | u32 sensor_id; |
24c1aa85 NG |
407 | enum sensors type; |
408 | u32 count = 0; | |
409 | int err = 0; | |
410 | ||
411 | opal = of_find_node_by_path("/ibm,opal/sensors"); | |
a86854d0 KC |
412 | sdata = devm_kcalloc(&pdev->dev, |
413 | pdata->sensors_count, sizeof(*sdata), | |
24c1aa85 NG |
414 | GFP_KERNEL); |
415 | if (!sdata) { | |
416 | err = -ENOMEM; | |
417 | goto exit_put_node; | |
418 | } | |
419 | ||
420 | for_each_child_of_node(opal, np) { | |
f9f54f16 CLG |
421 | const char *attr_name; |
422 | u32 opal_index; | |
2bcd3787 | 423 | const char *label; |
f9f54f16 | 424 | |
24c1aa85 NG |
425 | if (np->name == NULL) |
426 | continue; | |
427 | ||
c4ad4720 | 428 | type = get_sensor_type(np); |
24c1aa85 NG |
429 | if (type == MAX_SENSOR_TYPE) |
430 | continue; | |
431 | ||
14681637 CLG |
432 | /* |
433 | * Newer device trees use a "sensor-data" property | |
434 | * name for input. | |
435 | */ | |
436 | if (of_property_read_u32(np, "sensor-id", &sensor_id) && | |
437 | of_property_read_u32(np, "sensor-data", &sensor_id)) { | |
24c1aa85 NG |
438 | dev_info(&pdev->dev, |
439 | "'sensor-id' missing in the node '%s'\n", | |
440 | np->name); | |
441 | continue; | |
442 | } | |
443 | ||
18d03f3c | 444 | sdata[count].id = sensor_id; |
24c1aa85 | 445 | sdata[count].type = type; |
f9f54f16 | 446 | |
14681637 CLG |
447 | /* |
448 | * If we can not parse the node name, it means we are | |
449 | * running on a newer device tree. We can just forget | |
450 | * about the OPAL index and use a defaut value for the | |
451 | * hwmon attribute name | |
452 | */ | |
f9f54f16 CLG |
453 | attr_name = parse_opal_node_name(np->name, type, &opal_index); |
454 | if (IS_ERR(attr_name)) { | |
14681637 CLG |
455 | attr_name = "input"; |
456 | opal_index = INVALID_INDEX; | |
f9f54f16 CLG |
457 | } |
458 | ||
fcaf57b6 CLG |
459 | sdata[count].opal_index = opal_index; |
460 | sdata[count].hwmon_index = | |
461 | get_sensor_hwmon_index(&sdata[count], sdata, count); | |
462 | ||
9e4f74b1 | 463 | create_hwmon_attr(&sdata[count], attr_name, show_sensor); |
24c1aa85 NG |
464 | |
465 | pgroups[type]->attrs[sensor_groups[type].attr_count++] = | |
466 | &sdata[count++].dev_attr.attr; | |
2bcd3787 CLG |
467 | |
468 | if (!of_property_read_string(np, "label", &label)) { | |
469 | /* | |
470 | * For the label attribute, we can reuse the | |
471 | * "properties" of the previous "input" | |
472 | * attribute. They are related to the same | |
473 | * sensor. | |
474 | */ | |
2bcd3787 CLG |
475 | |
476 | make_sensor_label(np, &sdata[count], label); | |
996cf5a5 SB |
477 | populate_sensor(&sdata[count], opal_index, |
478 | sdata[count - 1].hwmon_index, | |
479 | sensor_id, "label", type, pgroups[type], | |
480 | show_label); | |
481 | count++; | |
482 | } | |
2bcd3787 | 483 | |
996cf5a5 SB |
484 | if (!of_property_read_u32(np, "sensor-data-max", &sensor_id)) { |
485 | attr_name = get_max_attr(type); | |
486 | populate_sensor(&sdata[count], opal_index, | |
487 | sdata[count - 1].hwmon_index, | |
488 | sensor_id, attr_name, type, | |
489 | pgroups[type], show_sensor); | |
490 | count++; | |
491 | } | |
2bcd3787 | 492 | |
996cf5a5 SB |
493 | if (!of_property_read_u32(np, "sensor-data-min", &sensor_id)) { |
494 | attr_name = get_min_attr(type); | |
495 | populate_sensor(&sdata[count], opal_index, | |
496 | sdata[count - 1].hwmon_index, | |
497 | sensor_id, attr_name, type, | |
498 | pgroups[type], show_sensor); | |
499 | count++; | |
2bcd3787 | 500 | } |
24c1aa85 NG |
501 | } |
502 | ||
503 | exit_put_node: | |
504 | of_node_put(opal); | |
505 | return err; | |
506 | } | |
507 | ||
8de303ba | 508 | static int ibmpowernv_probe(struct platform_device *pdev) |
24c1aa85 NG |
509 | { |
510 | struct platform_data *pdata; | |
511 | struct device *hwmon_dev; | |
512 | int err; | |
513 | ||
514 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
515 | if (!pdata) | |
516 | return -ENOMEM; | |
517 | ||
518 | platform_set_drvdata(pdev, pdata); | |
519 | pdata->sensors_count = 0; | |
520 | err = populate_attr_groups(pdev); | |
521 | if (err) | |
522 | return err; | |
523 | ||
524 | /* Create sysfs attribute data for each sensor found in the DT */ | |
525 | err = create_device_attrs(pdev); | |
526 | if (err) | |
527 | return err; | |
528 | ||
529 | /* Finally, register with hwmon */ | |
530 | hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, DRVNAME, | |
531 | pdata, | |
532 | pdata->attr_groups); | |
533 | ||
534 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
535 | } | |
536 | ||
8de303ba NG |
537 | static const struct platform_device_id opal_sensor_driver_ids[] = { |
538 | { | |
539 | .name = "opal-sensor", | |
540 | }, | |
541 | { } | |
542 | }; | |
543 | MODULE_DEVICE_TABLE(platform, opal_sensor_driver_ids); | |
544 | ||
0b056b29 CLG |
545 | static const struct of_device_id opal_sensor_match[] = { |
546 | { .compatible = "ibm,opal-sensor" }, | |
547 | { }, | |
548 | }; | |
549 | MODULE_DEVICE_TABLE(of, opal_sensor_match); | |
550 | ||
24c1aa85 | 551 | static struct platform_driver ibmpowernv_driver = { |
8de303ba NG |
552 | .probe = ibmpowernv_probe, |
553 | .id_table = opal_sensor_driver_ids, | |
554 | .driver = { | |
8de303ba | 555 | .name = DRVNAME, |
0b056b29 | 556 | .of_match_table = opal_sensor_match, |
24c1aa85 NG |
557 | }, |
558 | }; | |
559 | ||
3bdec670 | 560 | module_platform_driver(ibmpowernv_driver); |
24c1aa85 NG |
561 | |
562 | MODULE_AUTHOR("Neelesh Gupta <neelegup@linux.vnet.ibm.com>"); | |
563 | MODULE_DESCRIPTION("IBM POWERNV platform sensors"); | |
564 | MODULE_LICENSE("GPL"); |