2 * sis5595.c - Part of lm_sensors, Linux kernel modules
3 * for hardware monitoring
5 * Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
6 * Kyösti Mälkki <kmalkki@cc.hut.fi>, and
7 * Mark D. Studebaker <mdsxyz123@yahoo.com>
8 * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
9 * the help of Jean Delvare <jdelvare@suse.de>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * SiS southbridge has a LM78-like chip integrated on the same IC.
28 * This driver is a customized copy of lm78.c
30 * Supports following revisions:
31 * Version PCI ID PCI Revision
32 * 1 1039/0008 AF or less
33 * 2 1039/0008 B0 or greater
35 * Note: these chips contain a 0008 device which is incompatible with the
36 * 5595. We recognize these by the presence of the listed
37 * "blacklist" PCI ID and refuse to load.
39 * NOT SUPPORTED PCI ID BLACKLIST PCI ID
53 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
55 #include <linux/module.h>
56 #include <linux/slab.h>
57 #include <linux/ioport.h>
58 #include <linux/pci.h>
59 #include <linux/platform_device.h>
60 #include <linux/hwmon.h>
61 #include <linux/hwmon-sysfs.h>
62 #include <linux/err.h>
63 #include <linux/init.h>
64 #include <linux/jiffies.h>
65 #include <linux/mutex.h>
66 #include <linux/sysfs.h>
67 #include <linux/acpi.h>
72 * If force_addr is set to anything different from 0, we forcibly enable
73 * the device at the given address.
75 static u16 force_addr;
76 module_param(force_addr, ushort, 0);
77 MODULE_PARM_DESC(force_addr,
78 "Initialize the base address of the sensors");
80 static struct platform_device *pdev;
82 /* Many SIS5595 constants specified below */
84 /* Length of ISA address segment */
85 #define SIS5595_EXTENT 8
86 /* PCI Config Registers */
87 #define SIS5595_BASE_REG 0x68
88 #define SIS5595_PIN_REG 0x7A
89 #define SIS5595_ENABLE_REG 0x7B
91 /* Where are the ISA address/data registers relative to the base address */
92 #define SIS5595_ADDR_REG_OFFSET 5
93 #define SIS5595_DATA_REG_OFFSET 6
95 /* The SIS5595 registers */
96 #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
97 #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
98 #define SIS5595_REG_IN(nr) (0x20 + (nr))
100 #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
101 #define SIS5595_REG_FAN(nr) (0x28 + (nr))
104 * On the first version of the chip, the temp registers are separate.
105 * On the second version,
106 * TEMP pin is shared with IN4, configured in PCI register 0x7A.
107 * The registers are the same as well.
108 * OVER and HYST are really MAX and MIN.
112 #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \
113 SIS5595_REG_IN(4) : 0x27)
114 #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \
115 SIS5595_REG_IN_MAX(4) : 0x39)
116 #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \
117 SIS5595_REG_IN_MIN(4) : 0x3a)
119 #define SIS5595_REG_CONFIG 0x40
120 #define SIS5595_REG_ALARM1 0x41
121 #define SIS5595_REG_ALARM2 0x42
122 #define SIS5595_REG_FANDIV 0x47
125 * Conversions. Limit checking is only done on the TO_REG
130 * IN: mV, (0V to 4.08V)
133 static inline u8 IN_TO_REG(unsigned long val)
135 unsigned long nval = clamp_val(val, 0, 4080);
136 return (nval + 8) / 16;
138 #define IN_FROM_REG(val) ((val) * 16)
140 static inline u8 FAN_TO_REG(long rpm, int div)
146 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
149 static inline int FAN_FROM_REG(u8 val, int div)
151 return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div);
155 * TEMP: mC (-54.12C to +157.53C)
156 * REG: 0.83C/bit + 52.12, two's complement
158 static inline int TEMP_FROM_REG(s8 val)
160 return val * 830 + 52120;
162 static inline s8 TEMP_TO_REG(long val)
164 int nval = clamp_val(val, -54120, 157530) ;
165 return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830;
169 * FAN DIV: 1, 2, 4, or 8 (defaults to 2)
170 * REG: 0, 1, 2, or 3 (respectively) (defaults to 1)
172 static inline u8 DIV_TO_REG(int val)
174 return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1;
176 #define DIV_FROM_REG(val) (1 << (val))
179 * For each registered chip, we need to keep some data in memory.
180 * The structure is dynamically allocated.
182 struct sis5595_data {
185 struct device *hwmon_dev;
188 struct mutex update_lock;
189 char valid; /* !=0 if following fields are valid */
190 unsigned long last_updated; /* In jiffies */
191 char maxins; /* == 3 if temp enabled, otherwise == 4 */
192 u8 revision; /* Reg. value */
194 u8 in[5]; /* Register value */
195 u8 in_max[5]; /* Register value */
196 u8 in_min[5]; /* Register value */
197 u8 fan[2]; /* Register value */
198 u8 fan_min[2]; /* Register value */
199 s8 temp; /* Register value */
200 s8 temp_over; /* Register value */
201 s8 temp_hyst; /* Register value */
202 u8 fan_div[2]; /* Register encoding, shifted right */
203 u16 alarms; /* Register encoding, combined */
206 static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
208 static int sis5595_probe(struct platform_device *pdev);
209 static int sis5595_remove(struct platform_device *pdev);
211 static int sis5595_read_value(struct sis5595_data *data, u8 reg);
212 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
213 static struct sis5595_data *sis5595_update_device(struct device *dev);
214 static void sis5595_init_device(struct sis5595_data *data);
216 static struct platform_driver sis5595_driver = {
220 .probe = sis5595_probe,
221 .remove = sis5595_remove,
225 static ssize_t show_in(struct device *dev, struct device_attribute *da,
228 struct sis5595_data *data = sis5595_update_device(dev);
229 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
230 int nr = attr->index;
231 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
234 static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
237 struct sis5595_data *data = sis5595_update_device(dev);
238 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
239 int nr = attr->index;
240 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
243 static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
246 struct sis5595_data *data = sis5595_update_device(dev);
247 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
248 int nr = attr->index;
249 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
252 static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
253 const char *buf, size_t count)
255 struct sis5595_data *data = dev_get_drvdata(dev);
256 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
257 int nr = attr->index;
261 err = kstrtoul(buf, 10, &val);
265 mutex_lock(&data->update_lock);
266 data->in_min[nr] = IN_TO_REG(val);
267 sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
268 mutex_unlock(&data->update_lock);
272 static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
273 const char *buf, size_t count)
275 struct sis5595_data *data = dev_get_drvdata(dev);
276 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
277 int nr = attr->index;
281 err = kstrtoul(buf, 10, &val);
285 mutex_lock(&data->update_lock);
286 data->in_max[nr] = IN_TO_REG(val);
287 sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
288 mutex_unlock(&data->update_lock);
292 #define show_in_offset(offset) \
293 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
294 show_in, NULL, offset); \
295 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
296 show_in_min, set_in_min, offset); \
297 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
298 show_in_max, set_in_max, offset);
307 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
310 struct sis5595_data *data = sis5595_update_device(dev);
311 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
314 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr,
317 struct sis5595_data *data = sis5595_update_device(dev);
318 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
321 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr,
322 const char *buf, size_t count)
324 struct sis5595_data *data = dev_get_drvdata(dev);
328 err = kstrtol(buf, 10, &val);
332 mutex_lock(&data->update_lock);
333 data->temp_over = TEMP_TO_REG(val);
334 sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
335 mutex_unlock(&data->update_lock);
339 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr,
342 struct sis5595_data *data = sis5595_update_device(dev);
343 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
346 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr,
347 const char *buf, size_t count)
349 struct sis5595_data *data = dev_get_drvdata(dev);
353 err = kstrtol(buf, 10, &val);
357 mutex_lock(&data->update_lock);
358 data->temp_hyst = TEMP_TO_REG(val);
359 sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
360 mutex_unlock(&data->update_lock);
364 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
365 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
366 show_temp_over, set_temp_over);
367 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
368 show_temp_hyst, set_temp_hyst);
371 static ssize_t show_fan(struct device *dev, struct device_attribute *da,
374 struct sis5595_data *data = sis5595_update_device(dev);
375 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
376 int nr = attr->index;
377 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
378 DIV_FROM_REG(data->fan_div[nr])));
381 static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
384 struct sis5595_data *data = sis5595_update_device(dev);
385 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
386 int nr = attr->index;
387 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
388 DIV_FROM_REG(data->fan_div[nr])));
391 static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
392 const char *buf, size_t count)
394 struct sis5595_data *data = dev_get_drvdata(dev);
395 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
396 int nr = attr->index;
400 err = kstrtoul(buf, 10, &val);
404 mutex_lock(&data->update_lock);
405 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
406 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
407 mutex_unlock(&data->update_lock);
411 static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
414 struct sis5595_data *data = sis5595_update_device(dev);
415 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
416 int nr = attr->index;
417 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
421 * Note: we save and restore the fan minimum here, because its value is
422 * determined in part by the fan divisor. This follows the principle of
423 * least surprise; the user doesn't expect the fan minimum to change just
424 * because the divisor changed.
426 static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
427 const char *buf, size_t count)
429 struct sis5595_data *data = dev_get_drvdata(dev);
430 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
431 int nr = attr->index;
437 err = kstrtoul(buf, 10, &val);
441 mutex_lock(&data->update_lock);
442 min = FAN_FROM_REG(data->fan_min[nr],
443 DIV_FROM_REG(data->fan_div[nr]));
444 reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
448 data->fan_div[nr] = 0;
451 data->fan_div[nr] = 1;
454 data->fan_div[nr] = 2;
457 data->fan_div[nr] = 3;
461 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",
463 mutex_unlock(&data->update_lock);
469 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
472 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
475 sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
477 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
478 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
479 mutex_unlock(&data->update_lock);
483 #define show_fan_offset(offset) \
484 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
485 show_fan, NULL, offset - 1); \
486 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
487 show_fan_min, set_fan_min, offset - 1); \
488 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
489 show_fan_div, set_fan_div, offset - 1);
495 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
498 struct sis5595_data *data = sis5595_update_device(dev);
499 return sprintf(buf, "%d\n", data->alarms);
501 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
503 static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
506 struct sis5595_data *data = sis5595_update_device(dev);
507 int nr = to_sensor_dev_attr(da)->index;
508 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
510 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
511 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
512 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
513 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
514 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15);
515 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
516 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
517 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15);
519 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
522 struct sis5595_data *data = dev_get_drvdata(dev);
523 return sprintf(buf, "%s\n", data->name);
525 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
527 static struct attribute *sis5595_attributes[] = {
528 &sensor_dev_attr_in0_input.dev_attr.attr,
529 &sensor_dev_attr_in0_min.dev_attr.attr,
530 &sensor_dev_attr_in0_max.dev_attr.attr,
531 &sensor_dev_attr_in0_alarm.dev_attr.attr,
532 &sensor_dev_attr_in1_input.dev_attr.attr,
533 &sensor_dev_attr_in1_min.dev_attr.attr,
534 &sensor_dev_attr_in1_max.dev_attr.attr,
535 &sensor_dev_attr_in1_alarm.dev_attr.attr,
536 &sensor_dev_attr_in2_input.dev_attr.attr,
537 &sensor_dev_attr_in2_min.dev_attr.attr,
538 &sensor_dev_attr_in2_max.dev_attr.attr,
539 &sensor_dev_attr_in2_alarm.dev_attr.attr,
540 &sensor_dev_attr_in3_input.dev_attr.attr,
541 &sensor_dev_attr_in3_min.dev_attr.attr,
542 &sensor_dev_attr_in3_max.dev_attr.attr,
543 &sensor_dev_attr_in3_alarm.dev_attr.attr,
545 &sensor_dev_attr_fan1_input.dev_attr.attr,
546 &sensor_dev_attr_fan1_min.dev_attr.attr,
547 &sensor_dev_attr_fan1_div.dev_attr.attr,
548 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
549 &sensor_dev_attr_fan2_input.dev_attr.attr,
550 &sensor_dev_attr_fan2_min.dev_attr.attr,
551 &sensor_dev_attr_fan2_div.dev_attr.attr,
552 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
554 &dev_attr_alarms.attr,
559 static const struct attribute_group sis5595_group = {
560 .attrs = sis5595_attributes,
563 static struct attribute *sis5595_attributes_in4[] = {
564 &sensor_dev_attr_in4_input.dev_attr.attr,
565 &sensor_dev_attr_in4_min.dev_attr.attr,
566 &sensor_dev_attr_in4_max.dev_attr.attr,
567 &sensor_dev_attr_in4_alarm.dev_attr.attr,
571 static const struct attribute_group sis5595_group_in4 = {
572 .attrs = sis5595_attributes_in4,
575 static struct attribute *sis5595_attributes_temp1[] = {
576 &dev_attr_temp1_input.attr,
577 &dev_attr_temp1_max.attr,
578 &dev_attr_temp1_max_hyst.attr,
579 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
583 static const struct attribute_group sis5595_group_temp1 = {
584 .attrs = sis5595_attributes_temp1,
587 /* This is called when the module is loaded */
588 static int sis5595_probe(struct platform_device *pdev)
592 struct sis5595_data *data;
593 struct resource *res;
596 /* Reserve the ISA region */
597 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
598 if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT,
599 sis5595_driver.driver.name))
602 data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data),
607 mutex_init(&data->lock);
608 mutex_init(&data->update_lock);
609 data->addr = res->start;
610 data->name = "sis5595";
611 platform_set_drvdata(pdev, data);
614 * Check revision and pin registers to determine whether 4 or 5 voltages
616 data->revision = s_bridge->revision;
617 /* 4 voltages, 1 temp */
619 if (data->revision >= REV2MIN) {
620 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
622 /* 5 voltages, no temps */
626 /* Initialize the SIS5595 chip */
627 sis5595_init_device(data);
629 /* A few vars need to be filled upon startup */
630 for (i = 0; i < 2; i++) {
631 data->fan_min[i] = sis5595_read_value(data,
632 SIS5595_REG_FAN_MIN(i));
635 /* Register sysfs hooks */
636 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group);
639 if (data->maxins == 4) {
640 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4);
642 goto exit_remove_files;
644 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1);
646 goto exit_remove_files;
649 data->hwmon_dev = hwmon_device_register(&pdev->dev);
650 if (IS_ERR(data->hwmon_dev)) {
651 err = PTR_ERR(data->hwmon_dev);
652 goto exit_remove_files;
658 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
659 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
660 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
664 static int sis5595_remove(struct platform_device *pdev)
666 struct sis5595_data *data = platform_get_drvdata(pdev);
668 hwmon_device_unregister(data->hwmon_dev);
669 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
670 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
671 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
677 /* ISA access must be locked explicitly. */
678 static int sis5595_read_value(struct sis5595_data *data, u8 reg)
682 mutex_lock(&data->lock);
683 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
684 res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
685 mutex_unlock(&data->lock);
689 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
691 mutex_lock(&data->lock);
692 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
693 outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
694 mutex_unlock(&data->lock);
697 /* Called when we have found a new SIS5595. */
698 static void sis5595_init_device(struct sis5595_data *data)
700 u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
701 if (!(config & 0x01))
702 sis5595_write_value(data, SIS5595_REG_CONFIG,
703 (config & 0xf7) | 0x01);
706 static struct sis5595_data *sis5595_update_device(struct device *dev)
708 struct sis5595_data *data = dev_get_drvdata(dev);
711 mutex_lock(&data->update_lock);
713 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
716 for (i = 0; i <= data->maxins; i++) {
718 sis5595_read_value(data, SIS5595_REG_IN(i));
720 sis5595_read_value(data,
721 SIS5595_REG_IN_MIN(i));
723 sis5595_read_value(data,
724 SIS5595_REG_IN_MAX(i));
726 for (i = 0; i < 2; i++) {
728 sis5595_read_value(data, SIS5595_REG_FAN(i));
730 sis5595_read_value(data,
731 SIS5595_REG_FAN_MIN(i));
733 if (data->maxins == 3) {
735 sis5595_read_value(data, SIS5595_REG_TEMP);
737 sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
739 sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
741 i = sis5595_read_value(data, SIS5595_REG_FANDIV);
742 data->fan_div[0] = (i >> 4) & 0x03;
743 data->fan_div[1] = i >> 6;
745 sis5595_read_value(data, SIS5595_REG_ALARM1) |
746 (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
747 data->last_updated = jiffies;
751 mutex_unlock(&data->update_lock);
756 static const struct pci_device_id sis5595_pci_ids[] = {
757 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
761 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
763 static int blacklist[] = {
764 PCI_DEVICE_ID_SI_540,
765 PCI_DEVICE_ID_SI_550,
766 PCI_DEVICE_ID_SI_630,
767 PCI_DEVICE_ID_SI_645,
768 PCI_DEVICE_ID_SI_730,
769 PCI_DEVICE_ID_SI_735,
770 PCI_DEVICE_ID_SI_5511, /*
771 * 5513 chip has the 0008 device but
772 * that ID shows up in other chips so we
773 * use the 5511 ID for recognition
775 PCI_DEVICE_ID_SI_5597,
776 PCI_DEVICE_ID_SI_5598,
779 static int sis5595_device_add(unsigned short address)
781 struct resource res = {
783 .end = address + SIS5595_EXTENT - 1,
785 .flags = IORESOURCE_IO,
789 err = acpi_check_resource_conflict(&res);
793 pdev = platform_device_alloc("sis5595", address);
796 pr_err("Device allocation failed\n");
800 err = platform_device_add_resources(pdev, &res, 1);
802 pr_err("Device resource addition failed (%d)\n", err);
803 goto exit_device_put;
806 err = platform_device_add(pdev);
808 pr_err("Device addition failed (%d)\n", err);
809 goto exit_device_put;
815 platform_device_put(pdev);
820 static int sis5595_pci_probe(struct pci_dev *dev,
821 const struct pci_device_id *id)
827 for (i = blacklist; *i != 0; i++) {
829 d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
832 "Looked for SIS5595 but found unsupported device %.4x\n",
839 force_addr &= ~(SIS5595_EXTENT - 1);
841 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
842 pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
845 if (PCIBIOS_SUCCESSFUL !=
846 pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
847 dev_err(&dev->dev, "Failed to read ISA address\n");
851 address &= ~(SIS5595_EXTENT - 1);
854 "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
857 if (force_addr && address != force_addr) {
858 /* doesn't work for some chips? */
859 dev_err(&dev->dev, "Failed to force ISA address\n");
863 if (PCIBIOS_SUCCESSFUL !=
864 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
865 dev_err(&dev->dev, "Failed to read enable register\n");
868 if (!(enable & 0x80)) {
869 if ((PCIBIOS_SUCCESSFUL !=
870 pci_write_config_byte(dev, SIS5595_ENABLE_REG,
872 || (PCIBIOS_SUCCESSFUL !=
873 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
874 || (!(enable & 0x80))) {
875 /* doesn't work for some chips! */
876 dev_err(&dev->dev, "Failed to enable HWM device\n");
881 if (platform_driver_register(&sis5595_driver)) {
882 dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
886 s_bridge = pci_dev_get(dev);
887 /* Sets global pdev as a side effect */
888 if (sis5595_device_add(address))
889 goto exit_unregister;
892 * Always return failure here. This is to allow other drivers to bind
893 * to this pci device. We don't really want to have control over the
894 * pci device, we only wanted to read as few register values from it.
900 platform_driver_unregister(&sis5595_driver);
905 static struct pci_driver sis5595_pci_driver = {
907 .id_table = sis5595_pci_ids,
908 .probe = sis5595_pci_probe,
911 static int __init sm_sis5595_init(void)
913 return pci_register_driver(&sis5595_pci_driver);
916 static void __exit sm_sis5595_exit(void)
918 pci_unregister_driver(&sis5595_pci_driver);
919 if (s_bridge != NULL) {
920 platform_device_unregister(pdev);
921 platform_driver_unregister(&sis5595_driver);
922 pci_dev_put(s_bridge);
927 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
928 MODULE_DESCRIPTION("SiS 5595 Sensor device");
929 MODULE_LICENSE("GPL");
931 module_init(sm_sis5595_init);
932 module_exit(sm_sis5595_exit);