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1 | /*************************************************************************** |
2 | * Copyright (C) 2010-2011 Hans de Goede <hdegoede@redhat.com> * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <linux/hwmon.h> | |
28 | #include <linux/hwmon-sysfs.h> | |
29 | #include <linux/err.h> | |
30 | #include <linux/mutex.h> | |
31 | #include <linux/io.h> | |
32 | #include <linux/acpi.h> | |
33 | #include <linux/delay.h> | |
34 | ||
35 | #define DRVNAME "sch5627" | |
36 | #define DEVNAME DRVNAME /* We only support one model */ | |
37 | ||
38 | #define SIO_SCH5627_EM_LD 0x0C /* Embedded Microcontroller LD */ | |
39 | #define SIO_UNLOCK_KEY 0x55 /* Key to enable Super-I/O */ | |
40 | #define SIO_LOCK_KEY 0xAA /* Key to disable Super-I/O */ | |
41 | ||
42 | #define SIO_REG_LDSEL 0x07 /* Logical device select */ | |
43 | #define SIO_REG_DEVID 0x20 /* Device ID */ | |
44 | #define SIO_REG_ENABLE 0x30 /* Logical device enable */ | |
45 | #define SIO_REG_ADDR 0x66 /* Logical device address (2 bytes) */ | |
46 | ||
47 | #define SIO_SCH5627_ID 0xC6 /* Chipset ID */ | |
48 | ||
49 | #define REGION_LENGTH 9 | |
50 | ||
51 | #define SCH5627_HWMON_ID 0xa5 | |
52 | #define SCH5627_COMPANY_ID 0x5c | |
53 | #define SCH5627_PRIMARY_ID 0xa0 | |
54 | ||
55 | #define SCH5627_REG_BUILD_CODE 0x39 | |
56 | #define SCH5627_REG_BUILD_ID 0x3a | |
57 | #define SCH5627_REG_HWMON_ID 0x3c | |
58 | #define SCH5627_REG_HWMON_REV 0x3d | |
59 | #define SCH5627_REG_COMPANY_ID 0x3e | |
60 | #define SCH5627_REG_PRIMARY_ID 0x3f | |
61 | #define SCH5627_REG_CTRL 0x40 | |
62 | ||
63 | #define SCH5627_NO_TEMPS 8 | |
64 | #define SCH5627_NO_FANS 4 | |
65 | #define SCH5627_NO_IN 5 | |
66 | ||
67 | static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = { | |
68 | 0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 }; | |
69 | static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = { | |
70 | 0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 }; | |
71 | static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = { | |
72 | 0, 0, 1, 1, 0, 0, 0, 1 }; | |
73 | static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = { | |
74 | 0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 }; | |
75 | static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = { | |
76 | 0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 }; | |
77 | ||
78 | static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = { | |
79 | 0x2C, 0x2E, 0x30, 0x32 }; | |
80 | static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = { | |
81 | 0x62, 0x64, 0x66, 0x68 }; | |
82 | ||
83 | static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = { | |
84 | 0x22, 0x23, 0x24, 0x25, 0x189 }; | |
85 | static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = { | |
86 | 0xE4, 0xE4, 0xE3, 0xE3, 0x18A }; | |
87 | static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = { | |
88 | 1, 0, 1, 0, 1 }; | |
89 | static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = { | |
90 | 10745, 3660, 9765, 10745, 3660 }; | |
91 | static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = { | |
92 | "VCC", "VTT", "VBAT", "VTR", "V_IN" }; | |
93 | ||
94 | struct sch5627_data { | |
95 | unsigned short addr; | |
96 | struct device *hwmon_dev; | |
97 | u8 temp_max[SCH5627_NO_TEMPS]; | |
98 | u8 temp_crit[SCH5627_NO_TEMPS]; | |
99 | u16 fan_min[SCH5627_NO_FANS]; | |
100 | ||
101 | struct mutex update_lock; | |
102 | char valid; /* !=0 if following fields are valid */ | |
103 | unsigned long last_updated; /* In jiffies */ | |
104 | u16 temp[SCH5627_NO_TEMPS]; | |
105 | u16 fan[SCH5627_NO_FANS]; | |
106 | u16 in[SCH5627_NO_IN]; | |
107 | }; | |
108 | ||
109 | static struct platform_device *sch5627_pdev; | |
110 | ||
111 | /* Super I/O functions */ | |
112 | static inline int superio_inb(int base, int reg) | |
113 | { | |
114 | outb(reg, base); | |
115 | return inb(base + 1); | |
116 | } | |
117 | ||
118 | static inline int superio_enter(int base) | |
119 | { | |
120 | /* Don't step on other drivers' I/O space by accident */ | |
121 | if (!request_muxed_region(base, 2, DRVNAME)) { | |
122 | pr_err("I/O address 0x%04x already in use\n", base); | |
123 | return -EBUSY; | |
124 | } | |
125 | ||
126 | outb(SIO_UNLOCK_KEY, base); | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | static inline void superio_select(int base, int ld) | |
132 | { | |
133 | outb(SIO_REG_LDSEL, base); | |
134 | outb(ld, base + 1); | |
135 | } | |
136 | ||
137 | static inline void superio_exit(int base) | |
138 | { | |
139 | outb(SIO_LOCK_KEY, base); | |
140 | release_region(base, 2); | |
141 | } | |
142 | ||
143 | static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg) | |
144 | { | |
145 | u8 val; | |
146 | int i; | |
147 | /* | |
148 | * According to SMSC for the commands we use the maximum time for | |
149 | * the EM to respond is 15 ms, but testing shows in practice it | |
150 | * responds within 15-32 reads, so we first busy poll, and if | |
151 | * that fails sleep a bit and try again until we are way past | |
152 | * the 15 ms maximum response time. | |
153 | */ | |
154 | const int max_busy_polls = 64; | |
155 | const int max_lazy_polls = 32; | |
156 | ||
157 | /* (Optional) Write-Clear the EC to Host Mailbox Register */ | |
158 | val = inb(data->addr + 1); | |
159 | outb(val, data->addr + 1); | |
160 | ||
161 | /* Set Mailbox Address Pointer to first location in Region 1 */ | |
162 | outb(0x00, data->addr + 2); | |
163 | outb(0x80, data->addr + 3); | |
164 | ||
165 | /* Write Request Packet Header */ | |
166 | outb(0x02, data->addr + 4); /* Access Type: VREG read */ | |
167 | outb(0x01, data->addr + 5); /* # of Entries: 1 Byte (8-bit) */ | |
168 | outb(0x04, data->addr + 2); /* Mailbox AP to first data entry loc. */ | |
169 | ||
170 | /* Write Address field */ | |
171 | outb(reg & 0xff, data->addr + 6); | |
172 | outb(reg >> 8, data->addr + 7); | |
173 | ||
174 | /* Execute the Random Access Command */ | |
175 | outb(0x01, data->addr); /* Write 01h to the Host-to-EC register */ | |
176 | ||
177 | /* EM Interface Polling "Algorithm" */ | |
178 | for (i = 0; i < max_busy_polls + max_lazy_polls; i++) { | |
179 | if (i >= max_busy_polls) | |
180 | msleep(1); | |
181 | /* Read Interrupt source Register */ | |
182 | val = inb(data->addr + 8); | |
183 | /* Write Clear the interrupt source bits */ | |
184 | if (val) | |
185 | outb(val, data->addr + 8); | |
186 | /* Command Completed ? */ | |
187 | if (val & 0x01) | |
188 | break; | |
189 | } | |
190 | if (i == max_busy_polls + max_lazy_polls) { | |
191 | pr_err("Max retries exceeded reading virtual " | |
192 | "register 0x%04hx (%d)\n", reg, 1); | |
193 | return -EIO; | |
194 | } | |
195 | ||
196 | /* | |
197 | * According to SMSC we may need to retry this, but sofar I've always | |
198 | * seen this succeed in 1 try. | |
199 | */ | |
200 | for (i = 0; i < max_busy_polls; i++) { | |
201 | /* Read EC-to-Host Register */ | |
202 | val = inb(data->addr + 1); | |
203 | /* Command Completed ? */ | |
204 | if (val == 0x01) | |
205 | break; | |
206 | ||
207 | if (i == 0) | |
208 | pr_warn("EC reports: 0x%02x reading virtual register " | |
209 | "0x%04hx\n", (unsigned int)val, reg); | |
210 | } | |
211 | if (i == max_busy_polls) { | |
212 | pr_err("Max retries exceeded reading virtual " | |
213 | "register 0x%04hx (%d)\n", reg, 2); | |
214 | return -EIO; | |
215 | } | |
216 | ||
217 | /* | |
218 | * According to the SMSC app note we should now do: | |
219 | * | |
220 | * Set Mailbox Address Pointer to first location in Region 1 * | |
221 | * outb(0x00, data->addr + 2); | |
222 | * outb(0x80, data->addr + 3); | |
223 | * | |
224 | * But if we do that things don't work, so let's not. | |
225 | */ | |
226 | ||
227 | /* Read Data from Mailbox */ | |
228 | return inb(data->addr + 4); | |
229 | } | |
230 | ||
231 | static int sch5627_read_virtual_reg16(struct sch5627_data *data, u16 reg) | |
232 | { | |
233 | int lsb, msb; | |
234 | ||
235 | /* Read LSB first, this will cause the matching MSB to be latched */ | |
236 | lsb = sch5627_read_virtual_reg(data, reg); | |
237 | if (lsb < 0) | |
238 | return lsb; | |
239 | ||
240 | msb = sch5627_read_virtual_reg(data, reg + 1); | |
241 | if (msb < 0) | |
242 | return msb; | |
243 | ||
244 | return lsb | (msb << 8); | |
245 | } | |
246 | ||
247 | static int sch5627_read_virtual_reg12(struct sch5627_data *data, u16 msb_reg, | |
248 | u16 lsn_reg, int high_nibble) | |
249 | { | |
250 | int msb, lsn; | |
251 | ||
252 | /* Read MSB first, this will cause the matching LSN to be latched */ | |
253 | msb = sch5627_read_virtual_reg(data, msb_reg); | |
254 | if (msb < 0) | |
255 | return msb; | |
256 | ||
257 | lsn = sch5627_read_virtual_reg(data, lsn_reg); | |
258 | if (lsn < 0) | |
259 | return lsn; | |
260 | ||
261 | if (high_nibble) | |
262 | return (msb << 4) | (lsn >> 4); | |
263 | else | |
264 | return (msb << 4) | (lsn & 0x0f); | |
265 | } | |
266 | ||
267 | static struct sch5627_data *sch5627_update_device(struct device *dev) | |
268 | { | |
269 | struct sch5627_data *data = dev_get_drvdata(dev); | |
270 | struct sch5627_data *ret = data; | |
271 | int i, val; | |
272 | ||
273 | mutex_lock(&data->update_lock); | |
274 | ||
275 | /* Cache the values for 1 second */ | |
276 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
277 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
278 | val = sch5627_read_virtual_reg12(data, | |
279 | SCH5627_REG_TEMP_MSB[i], | |
280 | SCH5627_REG_TEMP_LSN[i], | |
281 | SCH5627_REG_TEMP_HIGH_NIBBLE[i]); | |
282 | if (unlikely(val < 0)) { | |
283 | ret = ERR_PTR(val); | |
284 | goto abort; | |
285 | } | |
286 | data->temp[i] = val; | |
287 | } | |
288 | ||
289 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
290 | val = sch5627_read_virtual_reg16(data, | |
291 | SCH5627_REG_FAN[i]); | |
292 | if (unlikely(val < 0)) { | |
293 | ret = ERR_PTR(val); | |
294 | goto abort; | |
295 | } | |
296 | data->fan[i] = val; | |
297 | } | |
298 | ||
299 | for (i = 0; i < SCH5627_NO_IN; i++) { | |
300 | val = sch5627_read_virtual_reg12(data, | |
301 | SCH5627_REG_IN_MSB[i], | |
302 | SCH5627_REG_IN_LSN[i], | |
303 | SCH5627_REG_IN_HIGH_NIBBLE[i]); | |
304 | if (unlikely(val < 0)) { | |
305 | ret = ERR_PTR(val); | |
306 | goto abort; | |
307 | } | |
308 | data->in[i] = val; | |
309 | } | |
310 | ||
311 | data->last_updated = jiffies; | |
312 | data->valid = 1; | |
313 | } | |
314 | abort: | |
315 | mutex_unlock(&data->update_lock); | |
316 | return ret; | |
317 | } | |
318 | ||
319 | static int __devinit sch5627_read_limits(struct sch5627_data *data) | |
320 | { | |
321 | int i, val; | |
322 | ||
323 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
324 | /* | |
325 | * Note what SMSC calls ABS, is what lm_sensors calls max | |
326 | * (aka high), and HIGH is what lm_sensors calls crit. | |
327 | */ | |
328 | val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_ABS[i]); | |
329 | if (val < 0) | |
330 | return val; | |
331 | data->temp_max[i] = val; | |
332 | ||
333 | val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_HIGH[i]); | |
334 | if (val < 0) | |
335 | return val; | |
336 | data->temp_crit[i] = val; | |
337 | } | |
338 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
339 | val = sch5627_read_virtual_reg16(data, SCH5627_REG_FAN_MIN[i]); | |
340 | if (val < 0) | |
341 | return val; | |
342 | data->fan_min[i] = val; | |
343 | } | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static int reg_to_temp(u16 reg) | |
349 | { | |
350 | return (reg * 625) / 10 - 64000; | |
351 | } | |
352 | ||
353 | static int reg_to_temp_limit(u8 reg) | |
354 | { | |
355 | return (reg - 64) * 1000; | |
356 | } | |
357 | ||
358 | static int reg_to_rpm(u16 reg) | |
359 | { | |
360 | if (reg == 0) | |
361 | return -EIO; | |
362 | if (reg == 0xffff) | |
363 | return 0; | |
364 | ||
365 | return 5400540 / reg; | |
366 | } | |
367 | ||
368 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
369 | char *buf) | |
370 | { | |
371 | return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME); | |
372 | } | |
373 | ||
374 | static ssize_t show_temp(struct device *dev, struct device_attribute | |
375 | *devattr, char *buf) | |
376 | { | |
377 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
378 | struct sch5627_data *data = sch5627_update_device(dev); | |
379 | int val; | |
380 | ||
381 | if (IS_ERR(data)) | |
382 | return PTR_ERR(data); | |
383 | ||
384 | val = reg_to_temp(data->temp[attr->index]); | |
385 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
386 | } | |
387 | ||
388 | static ssize_t show_temp_fault(struct device *dev, struct device_attribute | |
389 | *devattr, char *buf) | |
390 | { | |
391 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
392 | struct sch5627_data *data = sch5627_update_device(dev); | |
393 | ||
394 | if (IS_ERR(data)) | |
395 | return PTR_ERR(data); | |
396 | ||
397 | return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0); | |
398 | } | |
399 | ||
400 | static ssize_t show_temp_max(struct device *dev, struct device_attribute | |
401 | *devattr, char *buf) | |
402 | { | |
403 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
404 | struct sch5627_data *data = dev_get_drvdata(dev); | |
405 | int val; | |
406 | ||
407 | val = reg_to_temp_limit(data->temp_max[attr->index]); | |
408 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
409 | } | |
410 | ||
411 | static ssize_t show_temp_crit(struct device *dev, struct device_attribute | |
412 | *devattr, char *buf) | |
413 | { | |
414 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
415 | struct sch5627_data *data = dev_get_drvdata(dev); | |
416 | int val; | |
417 | ||
418 | val = reg_to_temp_limit(data->temp_crit[attr->index]); | |
419 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
420 | } | |
421 | ||
422 | static ssize_t show_fan(struct device *dev, struct device_attribute | |
423 | *devattr, char *buf) | |
424 | { | |
425 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
426 | struct sch5627_data *data = sch5627_update_device(dev); | |
427 | int val; | |
428 | ||
429 | if (IS_ERR(data)) | |
430 | return PTR_ERR(data); | |
431 | ||
432 | val = reg_to_rpm(data->fan[attr->index]); | |
433 | if (val < 0) | |
434 | return val; | |
435 | ||
436 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
437 | } | |
438 | ||
439 | static ssize_t show_fan_fault(struct device *dev, struct device_attribute | |
440 | *devattr, char *buf) | |
441 | { | |
442 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
443 | struct sch5627_data *data = sch5627_update_device(dev); | |
444 | ||
445 | if (IS_ERR(data)) | |
446 | return PTR_ERR(data); | |
447 | ||
448 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
449 | data->fan[attr->index] == 0xffff); | |
450 | } | |
451 | ||
452 | static ssize_t show_fan_min(struct device *dev, struct device_attribute | |
453 | *devattr, char *buf) | |
454 | { | |
455 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
456 | struct sch5627_data *data = dev_get_drvdata(dev); | |
457 | int val = reg_to_rpm(data->fan_min[attr->index]); | |
458 | if (val < 0) | |
459 | return val; | |
460 | ||
461 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
462 | } | |
463 | ||
464 | static ssize_t show_in(struct device *dev, struct device_attribute | |
465 | *devattr, char *buf) | |
466 | { | |
467 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
468 | struct sch5627_data *data = sch5627_update_device(dev); | |
469 | int val; | |
470 | ||
471 | if (IS_ERR(data)) | |
472 | return PTR_ERR(data); | |
473 | ||
474 | val = DIV_ROUND_CLOSEST( | |
475 | data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index], | |
476 | 10000); | |
477 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
478 | } | |
479 | ||
480 | static ssize_t show_in_label(struct device *dev, struct device_attribute | |
481 | *devattr, char *buf) | |
482 | { | |
483 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
484 | ||
485 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
486 | SCH5627_IN_LABELS[attr->index]); | |
487 | } | |
488 | ||
489 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
490 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); | |
491 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
492 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); | |
493 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); | |
494 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); | |
495 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); | |
496 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); | |
497 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); | |
498 | static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); | |
499 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); | |
500 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); | |
501 | static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); | |
502 | static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); | |
503 | static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); | |
504 | static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); | |
505 | static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); | |
506 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0); | |
507 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1); | |
508 | static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2); | |
509 | static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3); | |
510 | static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4); | |
511 | static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5); | |
512 | static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6); | |
513 | static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7); | |
514 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0); | |
515 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1); | |
516 | static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2); | |
517 | static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3); | |
518 | static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4); | |
519 | static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5); | |
520 | static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6); | |
521 | static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7); | |
522 | ||
523 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); | |
524 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); | |
525 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); | |
526 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); | |
527 | static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); | |
528 | static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); | |
529 | static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); | |
530 | static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); | |
531 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0); | |
532 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1); | |
533 | static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2); | |
534 | static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3); | |
535 | ||
536 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); | |
537 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); | |
538 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); | |
539 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); | |
540 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4); | |
541 | static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0); | |
542 | static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1); | |
543 | static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2); | |
544 | static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3); | |
545 | ||
546 | static struct attribute *sch5627_attributes[] = { | |
547 | &dev_attr_name.attr, | |
548 | ||
549 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
550 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
551 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
552 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
553 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
554 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
555 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
556 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
557 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
558 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
559 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
560 | &sensor_dev_attr_temp4_fault.dev_attr.attr, | |
561 | &sensor_dev_attr_temp5_fault.dev_attr.attr, | |
562 | &sensor_dev_attr_temp6_fault.dev_attr.attr, | |
563 | &sensor_dev_attr_temp7_fault.dev_attr.attr, | |
564 | &sensor_dev_attr_temp8_fault.dev_attr.attr, | |
565 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
566 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
567 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
568 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
569 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
570 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
571 | &sensor_dev_attr_temp7_max.dev_attr.attr, | |
572 | &sensor_dev_attr_temp8_max.dev_attr.attr, | |
573 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
574 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
575 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
576 | &sensor_dev_attr_temp4_crit.dev_attr.attr, | |
577 | &sensor_dev_attr_temp5_crit.dev_attr.attr, | |
578 | &sensor_dev_attr_temp6_crit.dev_attr.attr, | |
579 | &sensor_dev_attr_temp7_crit.dev_attr.attr, | |
580 | &sensor_dev_attr_temp8_crit.dev_attr.attr, | |
581 | ||
582 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
583 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
584 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
585 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
586 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
587 | &sensor_dev_attr_fan2_fault.dev_attr.attr, | |
588 | &sensor_dev_attr_fan3_fault.dev_attr.attr, | |
589 | &sensor_dev_attr_fan4_fault.dev_attr.attr, | |
590 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
591 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
592 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
593 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
594 | ||
595 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
596 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
597 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
598 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
599 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
600 | &sensor_dev_attr_in0_label.dev_attr.attr, | |
601 | &sensor_dev_attr_in1_label.dev_attr.attr, | |
602 | &sensor_dev_attr_in2_label.dev_attr.attr, | |
603 | &sensor_dev_attr_in3_label.dev_attr.attr, | |
604 | /* No in4_label as in4 is a generic input pin */ | |
605 | ||
606 | NULL | |
607 | }; | |
608 | ||
609 | static const struct attribute_group sch5627_group = { | |
610 | .attrs = sch5627_attributes, | |
611 | }; | |
612 | ||
613 | static int sch5627_remove(struct platform_device *pdev) | |
614 | { | |
615 | struct sch5627_data *data = platform_get_drvdata(pdev); | |
616 | ||
617 | if (data->hwmon_dev) | |
618 | hwmon_device_unregister(data->hwmon_dev); | |
619 | ||
620 | sysfs_remove_group(&pdev->dev.kobj, &sch5627_group); | |
621 | platform_set_drvdata(pdev, NULL); | |
622 | kfree(data); | |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
627 | static int __devinit sch5627_probe(struct platform_device *pdev) | |
628 | { | |
629 | struct sch5627_data *data; | |
630 | int err, build_code, build_id, hwmon_rev, val; | |
631 | ||
632 | data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL); | |
633 | if (!data) | |
634 | return -ENOMEM; | |
635 | ||
636 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; | |
637 | mutex_init(&data->update_lock); | |
638 | platform_set_drvdata(pdev, data); | |
639 | ||
640 | val = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_ID); | |
641 | if (val < 0) { | |
642 | err = val; | |
643 | goto error; | |
644 | } | |
645 | if (val != SCH5627_HWMON_ID) { | |
646 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon", | |
647 | val, SCH5627_HWMON_ID); | |
648 | err = -ENODEV; | |
649 | goto error; | |
650 | } | |
651 | ||
652 | val = sch5627_read_virtual_reg(data, SCH5627_REG_COMPANY_ID); | |
653 | if (val < 0) { | |
654 | err = val; | |
655 | goto error; | |
656 | } | |
657 | if (val != SCH5627_COMPANY_ID) { | |
658 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company", | |
659 | val, SCH5627_COMPANY_ID); | |
660 | err = -ENODEV; | |
661 | goto error; | |
662 | } | |
663 | ||
664 | val = sch5627_read_virtual_reg(data, SCH5627_REG_PRIMARY_ID); | |
665 | if (val < 0) { | |
666 | err = val; | |
667 | goto error; | |
668 | } | |
669 | if (val != SCH5627_PRIMARY_ID) { | |
670 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary", | |
671 | val, SCH5627_PRIMARY_ID); | |
672 | err = -ENODEV; | |
673 | goto error; | |
674 | } | |
675 | ||
676 | build_code = sch5627_read_virtual_reg(data, SCH5627_REG_BUILD_CODE); | |
677 | if (build_code < 0) { | |
678 | err = build_code; | |
679 | goto error; | |
680 | } | |
681 | ||
682 | build_id = sch5627_read_virtual_reg16(data, SCH5627_REG_BUILD_ID); | |
683 | if (build_id < 0) { | |
684 | err = build_id; | |
685 | goto error; | |
686 | } | |
687 | ||
688 | hwmon_rev = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_REV); | |
689 | if (hwmon_rev < 0) { | |
690 | err = hwmon_rev; | |
691 | goto error; | |
692 | } | |
693 | ||
694 | val = sch5627_read_virtual_reg(data, SCH5627_REG_CTRL); | |
695 | if (val < 0) { | |
696 | err = val; | |
697 | goto error; | |
698 | } | |
699 | if (!(val & 0x01)) { | |
700 | pr_err("hardware monitoring not enabled\n"); | |
701 | err = -ENODEV; | |
702 | goto error; | |
703 | } | |
704 | ||
705 | /* | |
706 | * Read limits, we do this only once as reading a register on | |
707 | * the sch5627 is quite expensive (and they don't change). | |
708 | */ | |
709 | err = sch5627_read_limits(data); | |
710 | if (err) | |
711 | goto error; | |
712 | ||
713 | pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n", | |
714 | build_code, build_id, hwmon_rev); | |
715 | ||
716 | /* Register sysfs interface files */ | |
717 | err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group); | |
718 | if (err) | |
719 | goto error; | |
720 | ||
721 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
722 | if (IS_ERR(data->hwmon_dev)) { | |
723 | err = PTR_ERR(data->hwmon_dev); | |
724 | data->hwmon_dev = NULL; | |
725 | goto error; | |
726 | } | |
727 | ||
728 | return 0; | |
729 | ||
730 | error: | |
731 | sch5627_remove(pdev); | |
732 | return err; | |
733 | } | |
734 | ||
735 | static int __init sch5627_find(int sioaddr, unsigned short *address) | |
736 | { | |
737 | u8 devid; | |
738 | int err = superio_enter(sioaddr); | |
739 | if (err) | |
740 | return err; | |
741 | ||
742 | devid = superio_inb(sioaddr, SIO_REG_DEVID); | |
743 | if (devid != SIO_SCH5627_ID) { | |
744 | pr_debug("Unsupported device id: 0x%02x\n", | |
745 | (unsigned int)devid); | |
746 | err = -ENODEV; | |
747 | goto exit; | |
748 | } | |
749 | ||
750 | superio_select(sioaddr, SIO_SCH5627_EM_LD); | |
751 | ||
752 | if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) { | |
753 | pr_warn("Device not activated\n"); | |
754 | err = -ENODEV; | |
755 | goto exit; | |
756 | } | |
757 | ||
758 | /* | |
759 | * Warning the order of the low / high byte is the other way around | |
760 | * as on most other superio devices!! | |
761 | */ | |
762 | *address = superio_inb(sioaddr, SIO_REG_ADDR) | | |
763 | superio_inb(sioaddr, SIO_REG_ADDR + 1) << 8; | |
764 | if (*address == 0) { | |
765 | pr_warn("Base address not set\n"); | |
766 | err = -ENODEV; | |
767 | goto exit; | |
768 | } | |
769 | ||
770 | pr_info("Found %s chip at %#hx\n", DEVNAME, *address); | |
771 | exit: | |
772 | superio_exit(sioaddr); | |
773 | return err; | |
774 | } | |
775 | ||
776 | static int __init sch5627_device_add(unsigned short address) | |
777 | { | |
778 | struct resource res = { | |
779 | .start = address, | |
780 | .end = address + REGION_LENGTH - 1, | |
781 | .flags = IORESOURCE_IO, | |
782 | }; | |
783 | int err; | |
784 | ||
785 | sch5627_pdev = platform_device_alloc(DRVNAME, address); | |
786 | if (!sch5627_pdev) | |
787 | return -ENOMEM; | |
788 | ||
789 | res.name = sch5627_pdev->name; | |
790 | err = acpi_check_resource_conflict(&res); | |
791 | if (err) | |
792 | goto exit_device_put; | |
793 | ||
794 | err = platform_device_add_resources(sch5627_pdev, &res, 1); | |
795 | if (err) { | |
796 | pr_err("Device resource addition failed\n"); | |
797 | goto exit_device_put; | |
798 | } | |
799 | ||
800 | err = platform_device_add(sch5627_pdev); | |
801 | if (err) { | |
802 | pr_err("Device addition failed\n"); | |
803 | goto exit_device_put; | |
804 | } | |
805 | ||
806 | return 0; | |
807 | ||
808 | exit_device_put: | |
809 | platform_device_put(sch5627_pdev); | |
810 | ||
811 | return err; | |
812 | } | |
813 | ||
814 | static struct platform_driver sch5627_driver = { | |
815 | .driver = { | |
816 | .owner = THIS_MODULE, | |
817 | .name = DRVNAME, | |
818 | }, | |
819 | .probe = sch5627_probe, | |
820 | .remove = sch5627_remove, | |
821 | }; | |
822 | ||
823 | static int __init sch5627_init(void) | |
824 | { | |
825 | int err = -ENODEV; | |
826 | unsigned short address; | |
827 | ||
828 | if (sch5627_find(0x4e, &address) && sch5627_find(0x2e, &address)) | |
829 | goto exit; | |
830 | ||
831 | err = platform_driver_register(&sch5627_driver); | |
832 | if (err) | |
833 | goto exit; | |
834 | ||
835 | err = sch5627_device_add(address); | |
836 | if (err) | |
837 | goto exit_driver; | |
838 | ||
839 | return 0; | |
840 | ||
841 | exit_driver: | |
842 | platform_driver_unregister(&sch5627_driver); | |
843 | exit: | |
844 | return err; | |
845 | } | |
846 | ||
847 | static void __exit sch5627_exit(void) | |
848 | { | |
849 | platform_device_unregister(sch5627_pdev); | |
850 | platform_driver_unregister(&sch5627_driver); | |
851 | } | |
852 | ||
853 | MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver"); | |
854 | MODULE_AUTHOR("Hans de Goede (hdegoede@redhat.com)"); | |
855 | MODULE_LICENSE("GPL"); | |
856 | ||
857 | module_init(sch5627_init); | |
858 | module_exit(sch5627_exit); |