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a98d506c HG |
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 | ||
709046a6 HG |
55 | #define SCH5627_CMD_READ 0x02 |
56 | #define SCH5627_CMD_WRITE 0x03 | |
57 | ||
a98d506c HG |
58 | #define SCH5627_REG_BUILD_CODE 0x39 |
59 | #define SCH5627_REG_BUILD_ID 0x3a | |
60 | #define SCH5627_REG_HWMON_ID 0x3c | |
61 | #define SCH5627_REG_HWMON_REV 0x3d | |
62 | #define SCH5627_REG_COMPANY_ID 0x3e | |
63 | #define SCH5627_REG_PRIMARY_ID 0x3f | |
64 | #define SCH5627_REG_CTRL 0x40 | |
65 | ||
66 | #define SCH5627_NO_TEMPS 8 | |
67 | #define SCH5627_NO_FANS 4 | |
68 | #define SCH5627_NO_IN 5 | |
69 | ||
70 | static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = { | |
71 | 0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 }; | |
72 | static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = { | |
73 | 0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 }; | |
74 | static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = { | |
75 | 0, 0, 1, 1, 0, 0, 0, 1 }; | |
76 | static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = { | |
77 | 0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 }; | |
78 | static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = { | |
79 | 0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 }; | |
80 | ||
81 | static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = { | |
82 | 0x2C, 0x2E, 0x30, 0x32 }; | |
83 | static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = { | |
84 | 0x62, 0x64, 0x66, 0x68 }; | |
85 | ||
86 | static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = { | |
87 | 0x22, 0x23, 0x24, 0x25, 0x189 }; | |
88 | static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = { | |
89 | 0xE4, 0xE4, 0xE3, 0xE3, 0x18A }; | |
90 | static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = { | |
91 | 1, 0, 1, 0, 1 }; | |
92 | static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = { | |
93 | 10745, 3660, 9765, 10745, 3660 }; | |
94 | static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = { | |
95 | "VCC", "VTT", "VBAT", "VTR", "V_IN" }; | |
96 | ||
97 | struct sch5627_data { | |
98 | unsigned short addr; | |
99 | struct device *hwmon_dev; | |
357b9dc6 | 100 | u8 control; |
a98d506c HG |
101 | u8 temp_max[SCH5627_NO_TEMPS]; |
102 | u8 temp_crit[SCH5627_NO_TEMPS]; | |
103 | u16 fan_min[SCH5627_NO_FANS]; | |
104 | ||
105 | struct mutex update_lock; | |
357b9dc6 | 106 | unsigned long last_battery; /* In jiffies */ |
a98d506c HG |
107 | char valid; /* !=0 if following fields are valid */ |
108 | unsigned long last_updated; /* In jiffies */ | |
109 | u16 temp[SCH5627_NO_TEMPS]; | |
110 | u16 fan[SCH5627_NO_FANS]; | |
111 | u16 in[SCH5627_NO_IN]; | |
112 | }; | |
113 | ||
114 | static struct platform_device *sch5627_pdev; | |
115 | ||
116 | /* Super I/O functions */ | |
117 | static inline int superio_inb(int base, int reg) | |
118 | { | |
119 | outb(reg, base); | |
120 | return inb(base + 1); | |
121 | } | |
122 | ||
123 | static inline int superio_enter(int base) | |
124 | { | |
125 | /* Don't step on other drivers' I/O space by accident */ | |
126 | if (!request_muxed_region(base, 2, DRVNAME)) { | |
127 | pr_err("I/O address 0x%04x already in use\n", base); | |
128 | return -EBUSY; | |
129 | } | |
130 | ||
131 | outb(SIO_UNLOCK_KEY, base); | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | static inline void superio_select(int base, int ld) | |
137 | { | |
138 | outb(SIO_REG_LDSEL, base); | |
139 | outb(ld, base + 1); | |
140 | } | |
141 | ||
142 | static inline void superio_exit(int base) | |
143 | { | |
144 | outb(SIO_LOCK_KEY, base); | |
145 | release_region(base, 2); | |
146 | } | |
147 | ||
709046a6 | 148 | static int sch5627_send_cmd(struct sch5627_data *data, u8 cmd, u16 reg, u8 v) |
a98d506c HG |
149 | { |
150 | u8 val; | |
151 | int i; | |
152 | /* | |
153 | * According to SMSC for the commands we use the maximum time for | |
154 | * the EM to respond is 15 ms, but testing shows in practice it | |
155 | * responds within 15-32 reads, so we first busy poll, and if | |
156 | * that fails sleep a bit and try again until we are way past | |
157 | * the 15 ms maximum response time. | |
158 | */ | |
159 | const int max_busy_polls = 64; | |
160 | const int max_lazy_polls = 32; | |
161 | ||
162 | /* (Optional) Write-Clear the EC to Host Mailbox Register */ | |
163 | val = inb(data->addr + 1); | |
164 | outb(val, data->addr + 1); | |
165 | ||
166 | /* Set Mailbox Address Pointer to first location in Region 1 */ | |
167 | outb(0x00, data->addr + 2); | |
168 | outb(0x80, data->addr + 3); | |
169 | ||
170 | /* Write Request Packet Header */ | |
709046a6 | 171 | outb(cmd, data->addr + 4); /* VREG Access Type read:0x02 write:0x03 */ |
a98d506c HG |
172 | outb(0x01, data->addr + 5); /* # of Entries: 1 Byte (8-bit) */ |
173 | outb(0x04, data->addr + 2); /* Mailbox AP to first data entry loc. */ | |
174 | ||
709046a6 HG |
175 | /* Write Value field */ |
176 | if (cmd == SCH5627_CMD_WRITE) | |
177 | outb(v, data->addr + 4); | |
178 | ||
a98d506c HG |
179 | /* Write Address field */ |
180 | outb(reg & 0xff, data->addr + 6); | |
181 | outb(reg >> 8, data->addr + 7); | |
182 | ||
183 | /* Execute the Random Access Command */ | |
184 | outb(0x01, data->addr); /* Write 01h to the Host-to-EC register */ | |
185 | ||
186 | /* EM Interface Polling "Algorithm" */ | |
187 | for (i = 0; i < max_busy_polls + max_lazy_polls; i++) { | |
188 | if (i >= max_busy_polls) | |
189 | msleep(1); | |
190 | /* Read Interrupt source Register */ | |
191 | val = inb(data->addr + 8); | |
192 | /* Write Clear the interrupt source bits */ | |
193 | if (val) | |
194 | outb(val, data->addr + 8); | |
195 | /* Command Completed ? */ | |
196 | if (val & 0x01) | |
197 | break; | |
198 | } | |
199 | if (i == max_busy_polls + max_lazy_polls) { | |
200 | pr_err("Max retries exceeded reading virtual " | |
201 | "register 0x%04hx (%d)\n", reg, 1); | |
202 | return -EIO; | |
203 | } | |
204 | ||
205 | /* | |
206 | * According to SMSC we may need to retry this, but sofar I've always | |
207 | * seen this succeed in 1 try. | |
208 | */ | |
209 | for (i = 0; i < max_busy_polls; i++) { | |
210 | /* Read EC-to-Host Register */ | |
211 | val = inb(data->addr + 1); | |
212 | /* Command Completed ? */ | |
213 | if (val == 0x01) | |
214 | break; | |
215 | ||
216 | if (i == 0) | |
217 | pr_warn("EC reports: 0x%02x reading virtual register " | |
218 | "0x%04hx\n", (unsigned int)val, reg); | |
219 | } | |
220 | if (i == max_busy_polls) { | |
221 | pr_err("Max retries exceeded reading virtual " | |
222 | "register 0x%04hx (%d)\n", reg, 2); | |
223 | return -EIO; | |
224 | } | |
225 | ||
226 | /* | |
227 | * According to the SMSC app note we should now do: | |
228 | * | |
229 | * Set Mailbox Address Pointer to first location in Region 1 * | |
230 | * outb(0x00, data->addr + 2); | |
231 | * outb(0x80, data->addr + 3); | |
232 | * | |
233 | * But if we do that things don't work, so let's not. | |
234 | */ | |
235 | ||
709046a6 HG |
236 | /* Read Value field */ |
237 | if (cmd == SCH5627_CMD_READ) | |
238 | return inb(data->addr + 4); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg) | |
244 | { | |
245 | return sch5627_send_cmd(data, SCH5627_CMD_READ, reg, 0); | |
a98d506c HG |
246 | } |
247 | ||
357b9dc6 HG |
248 | static int sch5627_write_virtual_reg(struct sch5627_data *data, |
249 | u16 reg, u8 val) | |
250 | { | |
251 | return sch5627_send_cmd(data, SCH5627_CMD_WRITE, reg, val); | |
252 | } | |
253 | ||
a98d506c HG |
254 | static int sch5627_read_virtual_reg16(struct sch5627_data *data, u16 reg) |
255 | { | |
256 | int lsb, msb; | |
257 | ||
258 | /* Read LSB first, this will cause the matching MSB to be latched */ | |
259 | lsb = sch5627_read_virtual_reg(data, reg); | |
260 | if (lsb < 0) | |
261 | return lsb; | |
262 | ||
263 | msb = sch5627_read_virtual_reg(data, reg + 1); | |
264 | if (msb < 0) | |
265 | return msb; | |
266 | ||
267 | return lsb | (msb << 8); | |
268 | } | |
269 | ||
270 | static int sch5627_read_virtual_reg12(struct sch5627_data *data, u16 msb_reg, | |
271 | u16 lsn_reg, int high_nibble) | |
272 | { | |
273 | int msb, lsn; | |
274 | ||
275 | /* Read MSB first, this will cause the matching LSN to be latched */ | |
276 | msb = sch5627_read_virtual_reg(data, msb_reg); | |
277 | if (msb < 0) | |
278 | return msb; | |
279 | ||
280 | lsn = sch5627_read_virtual_reg(data, lsn_reg); | |
281 | if (lsn < 0) | |
282 | return lsn; | |
283 | ||
284 | if (high_nibble) | |
285 | return (msb << 4) | (lsn >> 4); | |
286 | else | |
287 | return (msb << 4) | (lsn & 0x0f); | |
288 | } | |
289 | ||
290 | static struct sch5627_data *sch5627_update_device(struct device *dev) | |
291 | { | |
292 | struct sch5627_data *data = dev_get_drvdata(dev); | |
293 | struct sch5627_data *ret = data; | |
294 | int i, val; | |
295 | ||
296 | mutex_lock(&data->update_lock); | |
297 | ||
357b9dc6 HG |
298 | /* Trigger a Vbat voltage measurement every 5 minutes */ |
299 | if (time_after(jiffies, data->last_battery + 300 * HZ)) { | |
300 | sch5627_write_virtual_reg(data, SCH5627_REG_CTRL, | |
301 | data->control | 0x10); | |
302 | data->last_battery = jiffies; | |
303 | } | |
304 | ||
a98d506c HG |
305 | /* Cache the values for 1 second */ |
306 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
307 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
308 | val = sch5627_read_virtual_reg12(data, | |
309 | SCH5627_REG_TEMP_MSB[i], | |
310 | SCH5627_REG_TEMP_LSN[i], | |
311 | SCH5627_REG_TEMP_HIGH_NIBBLE[i]); | |
312 | if (unlikely(val < 0)) { | |
313 | ret = ERR_PTR(val); | |
314 | goto abort; | |
315 | } | |
316 | data->temp[i] = val; | |
317 | } | |
318 | ||
319 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
320 | val = sch5627_read_virtual_reg16(data, | |
321 | SCH5627_REG_FAN[i]); | |
322 | if (unlikely(val < 0)) { | |
323 | ret = ERR_PTR(val); | |
324 | goto abort; | |
325 | } | |
326 | data->fan[i] = val; | |
327 | } | |
328 | ||
329 | for (i = 0; i < SCH5627_NO_IN; i++) { | |
330 | val = sch5627_read_virtual_reg12(data, | |
331 | SCH5627_REG_IN_MSB[i], | |
332 | SCH5627_REG_IN_LSN[i], | |
333 | SCH5627_REG_IN_HIGH_NIBBLE[i]); | |
334 | if (unlikely(val < 0)) { | |
335 | ret = ERR_PTR(val); | |
336 | goto abort; | |
337 | } | |
338 | data->in[i] = val; | |
339 | } | |
340 | ||
341 | data->last_updated = jiffies; | |
342 | data->valid = 1; | |
343 | } | |
344 | abort: | |
345 | mutex_unlock(&data->update_lock); | |
346 | return ret; | |
347 | } | |
348 | ||
349 | static int __devinit sch5627_read_limits(struct sch5627_data *data) | |
350 | { | |
351 | int i, val; | |
352 | ||
353 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
354 | /* | |
355 | * Note what SMSC calls ABS, is what lm_sensors calls max | |
356 | * (aka high), and HIGH is what lm_sensors calls crit. | |
357 | */ | |
358 | val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_ABS[i]); | |
359 | if (val < 0) | |
360 | return val; | |
361 | data->temp_max[i] = val; | |
362 | ||
363 | val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_HIGH[i]); | |
364 | if (val < 0) | |
365 | return val; | |
366 | data->temp_crit[i] = val; | |
367 | } | |
368 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
369 | val = sch5627_read_virtual_reg16(data, SCH5627_REG_FAN_MIN[i]); | |
370 | if (val < 0) | |
371 | return val; | |
372 | data->fan_min[i] = val; | |
373 | } | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static int reg_to_temp(u16 reg) | |
379 | { | |
380 | return (reg * 625) / 10 - 64000; | |
381 | } | |
382 | ||
383 | static int reg_to_temp_limit(u8 reg) | |
384 | { | |
385 | return (reg - 64) * 1000; | |
386 | } | |
387 | ||
388 | static int reg_to_rpm(u16 reg) | |
389 | { | |
390 | if (reg == 0) | |
391 | return -EIO; | |
392 | if (reg == 0xffff) | |
393 | return 0; | |
394 | ||
395 | return 5400540 / reg; | |
396 | } | |
397 | ||
398 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
399 | char *buf) | |
400 | { | |
401 | return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME); | |
402 | } | |
403 | ||
404 | static ssize_t show_temp(struct device *dev, struct device_attribute | |
405 | *devattr, char *buf) | |
406 | { | |
407 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
408 | struct sch5627_data *data = sch5627_update_device(dev); | |
409 | int val; | |
410 | ||
411 | if (IS_ERR(data)) | |
412 | return PTR_ERR(data); | |
413 | ||
414 | val = reg_to_temp(data->temp[attr->index]); | |
415 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
416 | } | |
417 | ||
418 | static ssize_t show_temp_fault(struct device *dev, struct device_attribute | |
419 | *devattr, char *buf) | |
420 | { | |
421 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
422 | struct sch5627_data *data = sch5627_update_device(dev); | |
423 | ||
424 | if (IS_ERR(data)) | |
425 | return PTR_ERR(data); | |
426 | ||
427 | return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0); | |
428 | } | |
429 | ||
430 | static ssize_t show_temp_max(struct device *dev, struct device_attribute | |
431 | *devattr, char *buf) | |
432 | { | |
433 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
434 | struct sch5627_data *data = dev_get_drvdata(dev); | |
435 | int val; | |
436 | ||
437 | val = reg_to_temp_limit(data->temp_max[attr->index]); | |
438 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
439 | } | |
440 | ||
441 | static ssize_t show_temp_crit(struct device *dev, struct device_attribute | |
442 | *devattr, char *buf) | |
443 | { | |
444 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
445 | struct sch5627_data *data = dev_get_drvdata(dev); | |
446 | int val; | |
447 | ||
448 | val = reg_to_temp_limit(data->temp_crit[attr->index]); | |
449 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
450 | } | |
451 | ||
452 | static ssize_t show_fan(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 = sch5627_update_device(dev); | |
457 | int val; | |
458 | ||
459 | if (IS_ERR(data)) | |
460 | return PTR_ERR(data); | |
461 | ||
462 | val = reg_to_rpm(data->fan[attr->index]); | |
463 | if (val < 0) | |
464 | return val; | |
465 | ||
466 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
467 | } | |
468 | ||
469 | static ssize_t show_fan_fault(struct device *dev, struct device_attribute | |
470 | *devattr, char *buf) | |
471 | { | |
472 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
473 | struct sch5627_data *data = sch5627_update_device(dev); | |
474 | ||
475 | if (IS_ERR(data)) | |
476 | return PTR_ERR(data); | |
477 | ||
478 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
479 | data->fan[attr->index] == 0xffff); | |
480 | } | |
481 | ||
482 | static ssize_t show_fan_min(struct device *dev, struct device_attribute | |
483 | *devattr, char *buf) | |
484 | { | |
485 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
486 | struct sch5627_data *data = dev_get_drvdata(dev); | |
487 | int val = reg_to_rpm(data->fan_min[attr->index]); | |
488 | if (val < 0) | |
489 | return val; | |
490 | ||
491 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
492 | } | |
493 | ||
494 | static ssize_t show_in(struct device *dev, struct device_attribute | |
495 | *devattr, char *buf) | |
496 | { | |
497 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
498 | struct sch5627_data *data = sch5627_update_device(dev); | |
499 | int val; | |
500 | ||
501 | if (IS_ERR(data)) | |
502 | return PTR_ERR(data); | |
503 | ||
504 | val = DIV_ROUND_CLOSEST( | |
505 | data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index], | |
506 | 10000); | |
507 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
508 | } | |
509 | ||
510 | static ssize_t show_in_label(struct device *dev, struct device_attribute | |
511 | *devattr, char *buf) | |
512 | { | |
513 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
514 | ||
515 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
516 | SCH5627_IN_LABELS[attr->index]); | |
517 | } | |
518 | ||
519 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
520 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); | |
521 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
522 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); | |
523 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); | |
524 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); | |
525 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); | |
526 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); | |
527 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); | |
528 | static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); | |
529 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); | |
530 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); | |
531 | static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); | |
532 | static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); | |
533 | static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); | |
534 | static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); | |
535 | static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); | |
536 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0); | |
537 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1); | |
538 | static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2); | |
539 | static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3); | |
540 | static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4); | |
541 | static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5); | |
542 | static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6); | |
543 | static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7); | |
544 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0); | |
545 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1); | |
546 | static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2); | |
547 | static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3); | |
548 | static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4); | |
549 | static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5); | |
550 | static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6); | |
551 | static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7); | |
552 | ||
553 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); | |
554 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); | |
555 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); | |
556 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); | |
557 | static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); | |
558 | static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); | |
559 | static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); | |
560 | static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); | |
561 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0); | |
562 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1); | |
563 | static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2); | |
564 | static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3); | |
565 | ||
566 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); | |
567 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); | |
568 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); | |
569 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); | |
570 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4); | |
571 | static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0); | |
572 | static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1); | |
573 | static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2); | |
574 | static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3); | |
575 | ||
576 | static struct attribute *sch5627_attributes[] = { | |
577 | &dev_attr_name.attr, | |
578 | ||
579 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
580 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
581 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
582 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
583 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
584 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
585 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
586 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
587 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
588 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
589 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
590 | &sensor_dev_attr_temp4_fault.dev_attr.attr, | |
591 | &sensor_dev_attr_temp5_fault.dev_attr.attr, | |
592 | &sensor_dev_attr_temp6_fault.dev_attr.attr, | |
593 | &sensor_dev_attr_temp7_fault.dev_attr.attr, | |
594 | &sensor_dev_attr_temp8_fault.dev_attr.attr, | |
595 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
596 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
597 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
598 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
599 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
600 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
601 | &sensor_dev_attr_temp7_max.dev_attr.attr, | |
602 | &sensor_dev_attr_temp8_max.dev_attr.attr, | |
603 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
604 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
605 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
606 | &sensor_dev_attr_temp4_crit.dev_attr.attr, | |
607 | &sensor_dev_attr_temp5_crit.dev_attr.attr, | |
608 | &sensor_dev_attr_temp6_crit.dev_attr.attr, | |
609 | &sensor_dev_attr_temp7_crit.dev_attr.attr, | |
610 | &sensor_dev_attr_temp8_crit.dev_attr.attr, | |
611 | ||
612 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
613 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
614 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
615 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
616 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
617 | &sensor_dev_attr_fan2_fault.dev_attr.attr, | |
618 | &sensor_dev_attr_fan3_fault.dev_attr.attr, | |
619 | &sensor_dev_attr_fan4_fault.dev_attr.attr, | |
620 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
621 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
622 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
623 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
624 | ||
625 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
626 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
627 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
628 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
629 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
630 | &sensor_dev_attr_in0_label.dev_attr.attr, | |
631 | &sensor_dev_attr_in1_label.dev_attr.attr, | |
632 | &sensor_dev_attr_in2_label.dev_attr.attr, | |
633 | &sensor_dev_attr_in3_label.dev_attr.attr, | |
634 | /* No in4_label as in4 is a generic input pin */ | |
635 | ||
636 | NULL | |
637 | }; | |
638 | ||
639 | static const struct attribute_group sch5627_group = { | |
640 | .attrs = sch5627_attributes, | |
641 | }; | |
642 | ||
643 | static int sch5627_remove(struct platform_device *pdev) | |
644 | { | |
645 | struct sch5627_data *data = platform_get_drvdata(pdev); | |
646 | ||
647 | if (data->hwmon_dev) | |
648 | hwmon_device_unregister(data->hwmon_dev); | |
649 | ||
650 | sysfs_remove_group(&pdev->dev.kobj, &sch5627_group); | |
651 | platform_set_drvdata(pdev, NULL); | |
652 | kfree(data); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static int __devinit sch5627_probe(struct platform_device *pdev) | |
658 | { | |
659 | struct sch5627_data *data; | |
660 | int err, build_code, build_id, hwmon_rev, val; | |
661 | ||
662 | data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL); | |
663 | if (!data) | |
664 | return -ENOMEM; | |
665 | ||
666 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; | |
667 | mutex_init(&data->update_lock); | |
668 | platform_set_drvdata(pdev, data); | |
669 | ||
670 | val = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_ID); | |
671 | if (val < 0) { | |
672 | err = val; | |
673 | goto error; | |
674 | } | |
675 | if (val != SCH5627_HWMON_ID) { | |
676 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon", | |
677 | val, SCH5627_HWMON_ID); | |
678 | err = -ENODEV; | |
679 | goto error; | |
680 | } | |
681 | ||
682 | val = sch5627_read_virtual_reg(data, SCH5627_REG_COMPANY_ID); | |
683 | if (val < 0) { | |
684 | err = val; | |
685 | goto error; | |
686 | } | |
687 | if (val != SCH5627_COMPANY_ID) { | |
688 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company", | |
689 | val, SCH5627_COMPANY_ID); | |
690 | err = -ENODEV; | |
691 | goto error; | |
692 | } | |
693 | ||
694 | val = sch5627_read_virtual_reg(data, SCH5627_REG_PRIMARY_ID); | |
695 | if (val < 0) { | |
696 | err = val; | |
697 | goto error; | |
698 | } | |
699 | if (val != SCH5627_PRIMARY_ID) { | |
700 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary", | |
701 | val, SCH5627_PRIMARY_ID); | |
702 | err = -ENODEV; | |
703 | goto error; | |
704 | } | |
705 | ||
706 | build_code = sch5627_read_virtual_reg(data, SCH5627_REG_BUILD_CODE); | |
707 | if (build_code < 0) { | |
708 | err = build_code; | |
709 | goto error; | |
710 | } | |
711 | ||
712 | build_id = sch5627_read_virtual_reg16(data, SCH5627_REG_BUILD_ID); | |
713 | if (build_id < 0) { | |
714 | err = build_id; | |
715 | goto error; | |
716 | } | |
717 | ||
718 | hwmon_rev = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_REV); | |
719 | if (hwmon_rev < 0) { | |
720 | err = hwmon_rev; | |
721 | goto error; | |
722 | } | |
723 | ||
724 | val = sch5627_read_virtual_reg(data, SCH5627_REG_CTRL); | |
725 | if (val < 0) { | |
726 | err = val; | |
727 | goto error; | |
728 | } | |
357b9dc6 HG |
729 | data->control = val; |
730 | if (!(data->control & 0x01)) { | |
a98d506c HG |
731 | pr_err("hardware monitoring not enabled\n"); |
732 | err = -ENODEV; | |
733 | goto error; | |
734 | } | |
357b9dc6 HG |
735 | /* Trigger a Vbat voltage measurement, so that we get a valid reading |
736 | the first time we read Vbat */ | |
737 | sch5627_write_virtual_reg(data, SCH5627_REG_CTRL, | |
738 | data->control | 0x10); | |
739 | data->last_battery = jiffies; | |
a98d506c HG |
740 | |
741 | /* | |
742 | * Read limits, we do this only once as reading a register on | |
743 | * the sch5627 is quite expensive (and they don't change). | |
744 | */ | |
745 | err = sch5627_read_limits(data); | |
746 | if (err) | |
747 | goto error; | |
748 | ||
749 | pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n", | |
750 | build_code, build_id, hwmon_rev); | |
751 | ||
752 | /* Register sysfs interface files */ | |
753 | err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group); | |
754 | if (err) | |
755 | goto error; | |
756 | ||
757 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
758 | if (IS_ERR(data->hwmon_dev)) { | |
759 | err = PTR_ERR(data->hwmon_dev); | |
760 | data->hwmon_dev = NULL; | |
761 | goto error; | |
762 | } | |
763 | ||
764 | return 0; | |
765 | ||
766 | error: | |
767 | sch5627_remove(pdev); | |
768 | return err; | |
769 | } | |
770 | ||
771 | static int __init sch5627_find(int sioaddr, unsigned short *address) | |
772 | { | |
773 | u8 devid; | |
774 | int err = superio_enter(sioaddr); | |
775 | if (err) | |
776 | return err; | |
777 | ||
778 | devid = superio_inb(sioaddr, SIO_REG_DEVID); | |
779 | if (devid != SIO_SCH5627_ID) { | |
780 | pr_debug("Unsupported device id: 0x%02x\n", | |
781 | (unsigned int)devid); | |
782 | err = -ENODEV; | |
783 | goto exit; | |
784 | } | |
785 | ||
786 | superio_select(sioaddr, SIO_SCH5627_EM_LD); | |
787 | ||
788 | if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) { | |
789 | pr_warn("Device not activated\n"); | |
790 | err = -ENODEV; | |
791 | goto exit; | |
792 | } | |
793 | ||
794 | /* | |
795 | * Warning the order of the low / high byte is the other way around | |
796 | * as on most other superio devices!! | |
797 | */ | |
798 | *address = superio_inb(sioaddr, SIO_REG_ADDR) | | |
799 | superio_inb(sioaddr, SIO_REG_ADDR + 1) << 8; | |
800 | if (*address == 0) { | |
801 | pr_warn("Base address not set\n"); | |
802 | err = -ENODEV; | |
803 | goto exit; | |
804 | } | |
805 | ||
806 | pr_info("Found %s chip at %#hx\n", DEVNAME, *address); | |
807 | exit: | |
808 | superio_exit(sioaddr); | |
809 | return err; | |
810 | } | |
811 | ||
812 | static int __init sch5627_device_add(unsigned short address) | |
813 | { | |
814 | struct resource res = { | |
815 | .start = address, | |
816 | .end = address + REGION_LENGTH - 1, | |
817 | .flags = IORESOURCE_IO, | |
818 | }; | |
819 | int err; | |
820 | ||
821 | sch5627_pdev = platform_device_alloc(DRVNAME, address); | |
822 | if (!sch5627_pdev) | |
823 | return -ENOMEM; | |
824 | ||
825 | res.name = sch5627_pdev->name; | |
826 | err = acpi_check_resource_conflict(&res); | |
827 | if (err) | |
828 | goto exit_device_put; | |
829 | ||
830 | err = platform_device_add_resources(sch5627_pdev, &res, 1); | |
831 | if (err) { | |
832 | pr_err("Device resource addition failed\n"); | |
833 | goto exit_device_put; | |
834 | } | |
835 | ||
836 | err = platform_device_add(sch5627_pdev); | |
837 | if (err) { | |
838 | pr_err("Device addition failed\n"); | |
839 | goto exit_device_put; | |
840 | } | |
841 | ||
842 | return 0; | |
843 | ||
844 | exit_device_put: | |
845 | platform_device_put(sch5627_pdev); | |
846 | ||
847 | return err; | |
848 | } | |
849 | ||
850 | static struct platform_driver sch5627_driver = { | |
851 | .driver = { | |
852 | .owner = THIS_MODULE, | |
853 | .name = DRVNAME, | |
854 | }, | |
855 | .probe = sch5627_probe, | |
856 | .remove = sch5627_remove, | |
857 | }; | |
858 | ||
859 | static int __init sch5627_init(void) | |
860 | { | |
861 | int err = -ENODEV; | |
862 | unsigned short address; | |
863 | ||
864 | if (sch5627_find(0x4e, &address) && sch5627_find(0x2e, &address)) | |
865 | goto exit; | |
866 | ||
867 | err = platform_driver_register(&sch5627_driver); | |
868 | if (err) | |
869 | goto exit; | |
870 | ||
871 | err = sch5627_device_add(address); | |
872 | if (err) | |
873 | goto exit_driver; | |
874 | ||
875 | return 0; | |
876 | ||
877 | exit_driver: | |
878 | platform_driver_unregister(&sch5627_driver); | |
879 | exit: | |
880 | return err; | |
881 | } | |
882 | ||
883 | static void __exit sch5627_exit(void) | |
884 | { | |
885 | platform_device_unregister(sch5627_pdev); | |
886 | platform_driver_unregister(&sch5627_driver); | |
887 | } | |
888 | ||
889 | MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver"); | |
890 | MODULE_AUTHOR("Hans de Goede (hdegoede@redhat.com)"); | |
891 | MODULE_LICENSE("GPL"); | |
892 | ||
893 | module_init(sch5627_init); | |
894 | module_exit(sch5627_exit); |