1 /***************************************************************************
2 * Copyright (C) 2011-2012 Hans de Goede <hdegoede@redhat.com> *
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. *
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. *
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 ***************************************************************************/
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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 "sch56xx-common.h"
33 #define DRVNAME "sch5636"
34 #define DEVNAME "theseus" /* We only support one model for now */
36 #define SCH5636_REG_FUJITSU_ID 0x780
37 #define SCH5636_REG_FUJITSU_REV 0x783
39 #define SCH5636_NO_INS 5
40 #define SCH5636_NO_TEMPS 16
41 #define SCH5636_NO_FANS 8
43 static const u16 SCH5636_REG_IN_VAL
[SCH5636_NO_INS
] = {
44 0x22, 0x23, 0x24, 0x25, 0x189 };
45 static const u16 SCH5636_REG_IN_FACTORS
[SCH5636_NO_INS
] = {
46 4400, 1500, 4000, 4400, 16000 };
47 static const char * const SCH5636_IN_LABELS
[SCH5636_NO_INS
] = {
48 "3.3V", "VREF", "VBAT", "3.3AUX", "12V" };
50 static const u16 SCH5636_REG_TEMP_VAL
[SCH5636_NO_TEMPS
] = {
51 0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181,
52 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C };
53 #define SCH5636_REG_TEMP_CTRL(i) (0x790 + (i))
54 #define SCH5636_TEMP_WORKING 0x01
55 #define SCH5636_TEMP_ALARM 0x02
56 #define SCH5636_TEMP_DEACTIVATED 0x80
58 static const u16 SCH5636_REG_FAN_VAL
[SCH5636_NO_FANS
] = {
59 0x2C, 0x2E, 0x30, 0x32, 0x62, 0x64, 0x66, 0x68 };
60 #define SCH5636_REG_FAN_CTRL(i) (0x880 + (i))
61 /* FAULT in datasheet, but acts as an alarm */
62 #define SCH5636_FAN_ALARM 0x04
63 #define SCH5636_FAN_NOT_PRESENT 0x08
64 #define SCH5636_FAN_DEACTIVATED 0x80
69 struct device
*hwmon_dev
;
70 struct sch56xx_watchdog_data
*watchdog
;
72 struct mutex update_lock
;
73 char valid
; /* !=0 if following fields are valid */
74 unsigned long last_updated
; /* In jiffies */
75 u8 in
[SCH5636_NO_INS
];
76 u8 temp_val
[SCH5636_NO_TEMPS
];
77 u8 temp_ctrl
[SCH5636_NO_TEMPS
];
78 u16 fan_val
[SCH5636_NO_FANS
];
79 u8 fan_ctrl
[SCH5636_NO_FANS
];
82 static struct sch5636_data
*sch5636_update_device(struct device
*dev
)
84 struct sch5636_data
*data
= dev_get_drvdata(dev
);
85 struct sch5636_data
*ret
= data
;
88 mutex_lock(&data
->update_lock
);
90 /* Cache the values for 1 second */
91 if (data
->valid
&& !time_after(jiffies
, data
->last_updated
+ HZ
))
94 for (i
= 0; i
< SCH5636_NO_INS
; i
++) {
95 val
= sch56xx_read_virtual_reg(data
->addr
,
96 SCH5636_REG_IN_VAL
[i
]);
97 if (unlikely(val
< 0)) {
104 for (i
= 0; i
< SCH5636_NO_TEMPS
; i
++) {
105 if (data
->temp_ctrl
[i
] & SCH5636_TEMP_DEACTIVATED
)
108 val
= sch56xx_read_virtual_reg(data
->addr
,
109 SCH5636_REG_TEMP_VAL
[i
]);
110 if (unlikely(val
< 0)) {
114 data
->temp_val
[i
] = val
;
116 val
= sch56xx_read_virtual_reg(data
->addr
,
117 SCH5636_REG_TEMP_CTRL(i
));
118 if (unlikely(val
< 0)) {
122 data
->temp_ctrl
[i
] = val
;
123 /* Alarms need to be explicitly write-cleared */
124 if (val
& SCH5636_TEMP_ALARM
) {
125 sch56xx_write_virtual_reg(data
->addr
,
126 SCH5636_REG_TEMP_CTRL(i
), val
);
130 for (i
= 0; i
< SCH5636_NO_FANS
; i
++) {
131 if (data
->fan_ctrl
[i
] & SCH5636_FAN_DEACTIVATED
)
134 val
= sch56xx_read_virtual_reg16(data
->addr
,
135 SCH5636_REG_FAN_VAL
[i
]);
136 if (unlikely(val
< 0)) {
140 data
->fan_val
[i
] = val
;
142 val
= sch56xx_read_virtual_reg(data
->addr
,
143 SCH5636_REG_FAN_CTRL(i
));
144 if (unlikely(val
< 0)) {
148 data
->fan_ctrl
[i
] = val
;
149 /* Alarms need to be explicitly write-cleared */
150 if (val
& SCH5636_FAN_ALARM
) {
151 sch56xx_write_virtual_reg(data
->addr
,
152 SCH5636_REG_FAN_CTRL(i
), val
);
156 data
->last_updated
= jiffies
;
159 mutex_unlock(&data
->update_lock
);
163 static int reg_to_rpm(u16 reg
)
170 return 5400540 / reg
;
173 static ssize_t
show_name(struct device
*dev
, struct device_attribute
*devattr
,
176 return snprintf(buf
, PAGE_SIZE
, "%s\n", DEVNAME
);
179 static ssize_t
show_in_value(struct device
*dev
, struct device_attribute
182 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
183 struct sch5636_data
*data
= sch5636_update_device(dev
);
187 return PTR_ERR(data
);
189 val
= DIV_ROUND_CLOSEST(
190 data
->in
[attr
->index
] * SCH5636_REG_IN_FACTORS
[attr
->index
],
192 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
195 static ssize_t
show_in_label(struct device
*dev
, struct device_attribute
198 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
200 return snprintf(buf
, PAGE_SIZE
, "%s\n",
201 SCH5636_IN_LABELS
[attr
->index
]);
204 static ssize_t
show_temp_value(struct device
*dev
, struct device_attribute
207 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
208 struct sch5636_data
*data
= sch5636_update_device(dev
);
212 return PTR_ERR(data
);
214 val
= (data
->temp_val
[attr
->index
] - 64) * 1000;
215 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
218 static ssize_t
show_temp_fault(struct device
*dev
, struct device_attribute
221 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
222 struct sch5636_data
*data
= sch5636_update_device(dev
);
226 return PTR_ERR(data
);
228 val
= (data
->temp_ctrl
[attr
->index
] & SCH5636_TEMP_WORKING
) ? 0 : 1;
229 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
232 static ssize_t
show_temp_alarm(struct device
*dev
, struct device_attribute
235 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
236 struct sch5636_data
*data
= sch5636_update_device(dev
);
240 return PTR_ERR(data
);
242 val
= (data
->temp_ctrl
[attr
->index
] & SCH5636_TEMP_ALARM
) ? 1 : 0;
243 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
246 static ssize_t
show_fan_value(struct device
*dev
, struct device_attribute
249 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
250 struct sch5636_data
*data
= sch5636_update_device(dev
);
254 return PTR_ERR(data
);
256 val
= reg_to_rpm(data
->fan_val
[attr
->index
]);
260 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
263 static ssize_t
show_fan_fault(struct device
*dev
, struct device_attribute
266 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
267 struct sch5636_data
*data
= sch5636_update_device(dev
);
271 return PTR_ERR(data
);
273 val
= (data
->fan_ctrl
[attr
->index
] & SCH5636_FAN_NOT_PRESENT
) ? 1 : 0;
274 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
277 static ssize_t
show_fan_alarm(struct device
*dev
, struct device_attribute
280 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
281 struct sch5636_data
*data
= sch5636_update_device(dev
);
285 return PTR_ERR(data
);
287 val
= (data
->fan_ctrl
[attr
->index
] & SCH5636_FAN_ALARM
) ? 1 : 0;
288 return snprintf(buf
, PAGE_SIZE
, "%d\n", val
);
291 static struct sensor_device_attribute sch5636_attr
[] = {
292 SENSOR_ATTR(name
, 0444, show_name
, NULL
, 0),
293 SENSOR_ATTR(in0_input
, 0444, show_in_value
, NULL
, 0),
294 SENSOR_ATTR(in0_label
, 0444, show_in_label
, NULL
, 0),
295 SENSOR_ATTR(in1_input
, 0444, show_in_value
, NULL
, 1),
296 SENSOR_ATTR(in1_label
, 0444, show_in_label
, NULL
, 1),
297 SENSOR_ATTR(in2_input
, 0444, show_in_value
, NULL
, 2),
298 SENSOR_ATTR(in2_label
, 0444, show_in_label
, NULL
, 2),
299 SENSOR_ATTR(in3_input
, 0444, show_in_value
, NULL
, 3),
300 SENSOR_ATTR(in3_label
, 0444, show_in_label
, NULL
, 3),
301 SENSOR_ATTR(in4_input
, 0444, show_in_value
, NULL
, 4),
302 SENSOR_ATTR(in4_label
, 0444, show_in_label
, NULL
, 4),
305 static struct sensor_device_attribute sch5636_temp_attr
[] = {
306 SENSOR_ATTR(temp1_input
, 0444, show_temp_value
, NULL
, 0),
307 SENSOR_ATTR(temp1_fault
, 0444, show_temp_fault
, NULL
, 0),
308 SENSOR_ATTR(temp1_alarm
, 0444, show_temp_alarm
, NULL
, 0),
309 SENSOR_ATTR(temp2_input
, 0444, show_temp_value
, NULL
, 1),
310 SENSOR_ATTR(temp2_fault
, 0444, show_temp_fault
, NULL
, 1),
311 SENSOR_ATTR(temp2_alarm
, 0444, show_temp_alarm
, NULL
, 1),
312 SENSOR_ATTR(temp3_input
, 0444, show_temp_value
, NULL
, 2),
313 SENSOR_ATTR(temp3_fault
, 0444, show_temp_fault
, NULL
, 2),
314 SENSOR_ATTR(temp3_alarm
, 0444, show_temp_alarm
, NULL
, 2),
315 SENSOR_ATTR(temp4_input
, 0444, show_temp_value
, NULL
, 3),
316 SENSOR_ATTR(temp4_fault
, 0444, show_temp_fault
, NULL
, 3),
317 SENSOR_ATTR(temp4_alarm
, 0444, show_temp_alarm
, NULL
, 3),
318 SENSOR_ATTR(temp5_input
, 0444, show_temp_value
, NULL
, 4),
319 SENSOR_ATTR(temp5_fault
, 0444, show_temp_fault
, NULL
, 4),
320 SENSOR_ATTR(temp5_alarm
, 0444, show_temp_alarm
, NULL
, 4),
321 SENSOR_ATTR(temp6_input
, 0444, show_temp_value
, NULL
, 5),
322 SENSOR_ATTR(temp6_fault
, 0444, show_temp_fault
, NULL
, 5),
323 SENSOR_ATTR(temp6_alarm
, 0444, show_temp_alarm
, NULL
, 5),
324 SENSOR_ATTR(temp7_input
, 0444, show_temp_value
, NULL
, 6),
325 SENSOR_ATTR(temp7_fault
, 0444, show_temp_fault
, NULL
, 6),
326 SENSOR_ATTR(temp7_alarm
, 0444, show_temp_alarm
, NULL
, 6),
327 SENSOR_ATTR(temp8_input
, 0444, show_temp_value
, NULL
, 7),
328 SENSOR_ATTR(temp8_fault
, 0444, show_temp_fault
, NULL
, 7),
329 SENSOR_ATTR(temp8_alarm
, 0444, show_temp_alarm
, NULL
, 7),
330 SENSOR_ATTR(temp9_input
, 0444, show_temp_value
, NULL
, 8),
331 SENSOR_ATTR(temp9_fault
, 0444, show_temp_fault
, NULL
, 8),
332 SENSOR_ATTR(temp9_alarm
, 0444, show_temp_alarm
, NULL
, 8),
333 SENSOR_ATTR(temp10_input
, 0444, show_temp_value
, NULL
, 9),
334 SENSOR_ATTR(temp10_fault
, 0444, show_temp_fault
, NULL
, 9),
335 SENSOR_ATTR(temp10_alarm
, 0444, show_temp_alarm
, NULL
, 9),
336 SENSOR_ATTR(temp11_input
, 0444, show_temp_value
, NULL
, 10),
337 SENSOR_ATTR(temp11_fault
, 0444, show_temp_fault
, NULL
, 10),
338 SENSOR_ATTR(temp11_alarm
, 0444, show_temp_alarm
, NULL
, 10),
339 SENSOR_ATTR(temp12_input
, 0444, show_temp_value
, NULL
, 11),
340 SENSOR_ATTR(temp12_fault
, 0444, show_temp_fault
, NULL
, 11),
341 SENSOR_ATTR(temp12_alarm
, 0444, show_temp_alarm
, NULL
, 11),
342 SENSOR_ATTR(temp13_input
, 0444, show_temp_value
, NULL
, 12),
343 SENSOR_ATTR(temp13_fault
, 0444, show_temp_fault
, NULL
, 12),
344 SENSOR_ATTR(temp13_alarm
, 0444, show_temp_alarm
, NULL
, 12),
345 SENSOR_ATTR(temp14_input
, 0444, show_temp_value
, NULL
, 13),
346 SENSOR_ATTR(temp14_fault
, 0444, show_temp_fault
, NULL
, 13),
347 SENSOR_ATTR(temp14_alarm
, 0444, show_temp_alarm
, NULL
, 13),
348 SENSOR_ATTR(temp15_input
, 0444, show_temp_value
, NULL
, 14),
349 SENSOR_ATTR(temp15_fault
, 0444, show_temp_fault
, NULL
, 14),
350 SENSOR_ATTR(temp15_alarm
, 0444, show_temp_alarm
, NULL
, 14),
351 SENSOR_ATTR(temp16_input
, 0444, show_temp_value
, NULL
, 15),
352 SENSOR_ATTR(temp16_fault
, 0444, show_temp_fault
, NULL
, 15),
353 SENSOR_ATTR(temp16_alarm
, 0444, show_temp_alarm
, NULL
, 15),
356 static struct sensor_device_attribute sch5636_fan_attr
[] = {
357 SENSOR_ATTR(fan1_input
, 0444, show_fan_value
, NULL
, 0),
358 SENSOR_ATTR(fan1_fault
, 0444, show_fan_fault
, NULL
, 0),
359 SENSOR_ATTR(fan1_alarm
, 0444, show_fan_alarm
, NULL
, 0),
360 SENSOR_ATTR(fan2_input
, 0444, show_fan_value
, NULL
, 1),
361 SENSOR_ATTR(fan2_fault
, 0444, show_fan_fault
, NULL
, 1),
362 SENSOR_ATTR(fan2_alarm
, 0444, show_fan_alarm
, NULL
, 1),
363 SENSOR_ATTR(fan3_input
, 0444, show_fan_value
, NULL
, 2),
364 SENSOR_ATTR(fan3_fault
, 0444, show_fan_fault
, NULL
, 2),
365 SENSOR_ATTR(fan3_alarm
, 0444, show_fan_alarm
, NULL
, 2),
366 SENSOR_ATTR(fan4_input
, 0444, show_fan_value
, NULL
, 3),
367 SENSOR_ATTR(fan4_fault
, 0444, show_fan_fault
, NULL
, 3),
368 SENSOR_ATTR(fan4_alarm
, 0444, show_fan_alarm
, NULL
, 3),
369 SENSOR_ATTR(fan5_input
, 0444, show_fan_value
, NULL
, 4),
370 SENSOR_ATTR(fan5_fault
, 0444, show_fan_fault
, NULL
, 4),
371 SENSOR_ATTR(fan5_alarm
, 0444, show_fan_alarm
, NULL
, 4),
372 SENSOR_ATTR(fan6_input
, 0444, show_fan_value
, NULL
, 5),
373 SENSOR_ATTR(fan6_fault
, 0444, show_fan_fault
, NULL
, 5),
374 SENSOR_ATTR(fan6_alarm
, 0444, show_fan_alarm
, NULL
, 5),
375 SENSOR_ATTR(fan7_input
, 0444, show_fan_value
, NULL
, 6),
376 SENSOR_ATTR(fan7_fault
, 0444, show_fan_fault
, NULL
, 6),
377 SENSOR_ATTR(fan7_alarm
, 0444, show_fan_alarm
, NULL
, 6),
378 SENSOR_ATTR(fan8_input
, 0444, show_fan_value
, NULL
, 7),
379 SENSOR_ATTR(fan8_fault
, 0444, show_fan_fault
, NULL
, 7),
380 SENSOR_ATTR(fan8_alarm
, 0444, show_fan_alarm
, NULL
, 7),
383 static int sch5636_remove(struct platform_device
*pdev
)
385 struct sch5636_data
*data
= platform_get_drvdata(pdev
);
389 sch56xx_watchdog_unregister(data
->watchdog
);
392 hwmon_device_unregister(data
->hwmon_dev
);
394 for (i
= 0; i
< ARRAY_SIZE(sch5636_attr
); i
++)
395 device_remove_file(&pdev
->dev
, &sch5636_attr
[i
].dev_attr
);
397 for (i
= 0; i
< SCH5636_NO_TEMPS
* 3; i
++)
398 device_remove_file(&pdev
->dev
,
399 &sch5636_temp_attr
[i
].dev_attr
);
401 for (i
= 0; i
< SCH5636_NO_FANS
* 3; i
++)
402 device_remove_file(&pdev
->dev
,
403 &sch5636_fan_attr
[i
].dev_attr
);
408 static int sch5636_probe(struct platform_device
*pdev
)
410 struct sch5636_data
*data
;
411 int i
, err
, val
, revision
[2];
414 data
= devm_kzalloc(&pdev
->dev
, sizeof(struct sch5636_data
),
419 data
->addr
= platform_get_resource(pdev
, IORESOURCE_IO
, 0)->start
;
420 mutex_init(&data
->update_lock
);
421 platform_set_drvdata(pdev
, data
);
423 for (i
= 0; i
< 3; i
++) {
424 val
= sch56xx_read_virtual_reg(data
->addr
,
425 SCH5636_REG_FUJITSU_ID
+ i
);
427 pr_err("Could not read Fujitsu id byte at %#x\n",
428 SCH5636_REG_FUJITSU_ID
+ i
);
436 if (strcmp(id
, "THS")) {
437 pr_err("Unknown Fujitsu id: %02x%02x%02x\n",
438 id
[0], id
[1], id
[2]);
443 for (i
= 0; i
< 2; i
++) {
444 val
= sch56xx_read_virtual_reg(data
->addr
,
445 SCH5636_REG_FUJITSU_REV
+ i
);
452 pr_info("Found %s chip at %#hx, revison: %d.%02d\n", DEVNAME
,
453 data
->addr
, revision
[0], revision
[1]);
455 /* Read all temp + fan ctrl registers to determine which are active */
456 for (i
= 0; i
< SCH5636_NO_TEMPS
; i
++) {
457 val
= sch56xx_read_virtual_reg(data
->addr
,
458 SCH5636_REG_TEMP_CTRL(i
));
459 if (unlikely(val
< 0)) {
463 data
->temp_ctrl
[i
] = val
;
466 for (i
= 0; i
< SCH5636_NO_FANS
; i
++) {
467 val
= sch56xx_read_virtual_reg(data
->addr
,
468 SCH5636_REG_FAN_CTRL(i
));
469 if (unlikely(val
< 0)) {
473 data
->fan_ctrl
[i
] = val
;
476 for (i
= 0; i
< ARRAY_SIZE(sch5636_attr
); i
++) {
477 err
= device_create_file(&pdev
->dev
,
478 &sch5636_attr
[i
].dev_attr
);
483 for (i
= 0; i
< (SCH5636_NO_TEMPS
* 3); i
++) {
484 if (data
->temp_ctrl
[i
/3] & SCH5636_TEMP_DEACTIVATED
)
487 err
= device_create_file(&pdev
->dev
,
488 &sch5636_temp_attr
[i
].dev_attr
);
493 for (i
= 0; i
< (SCH5636_NO_FANS
* 3); i
++) {
494 if (data
->fan_ctrl
[i
/3] & SCH5636_FAN_DEACTIVATED
)
497 err
= device_create_file(&pdev
->dev
,
498 &sch5636_fan_attr
[i
].dev_attr
);
503 data
->hwmon_dev
= hwmon_device_register(&pdev
->dev
);
504 if (IS_ERR(data
->hwmon_dev
)) {
505 err
= PTR_ERR(data
->hwmon_dev
);
506 data
->hwmon_dev
= NULL
;
510 /* Note failing to register the watchdog is not a fatal error */
511 data
->watchdog
= sch56xx_watchdog_register(&pdev
->dev
, data
->addr
,
512 (revision
[0] << 8) | revision
[1],
513 &data
->update_lock
, 0);
518 sch5636_remove(pdev
);
522 static struct platform_driver sch5636_driver
= {
524 .owner
= THIS_MODULE
,
527 .probe
= sch5636_probe
,
528 .remove
= sch5636_remove
,
531 module_platform_driver(sch5636_driver
);
533 MODULE_DESCRIPTION("SMSC SCH5636 Hardware Monitoring Driver");
534 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
535 MODULE_LICENSE("GPL");