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(int 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 = {
218 .owner = THIS_MODULE,
221 .probe = sis5595_probe,
222 .remove = sis5595_remove,
226 static ssize_t show_in(struct device *dev, struct device_attribute *da,
229 struct sis5595_data *data = sis5595_update_device(dev);
230 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
231 int nr = attr->index;
232 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
235 static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
238 struct sis5595_data *data = sis5595_update_device(dev);
239 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
240 int nr = attr->index;
241 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
244 static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
247 struct sis5595_data *data = sis5595_update_device(dev);
248 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
249 int nr = attr->index;
250 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
253 static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
254 const char *buf, size_t count)
256 struct sis5595_data *data = dev_get_drvdata(dev);
257 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
258 int nr = attr->index;
262 err = kstrtoul(buf, 10, &val);
266 mutex_lock(&data->update_lock);
267 data->in_min[nr] = IN_TO_REG(val);
268 sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
269 mutex_unlock(&data->update_lock);
273 static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
274 const char *buf, size_t count)
276 struct sis5595_data *data = dev_get_drvdata(dev);
277 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
278 int nr = attr->index;
282 err = kstrtoul(buf, 10, &val);
286 mutex_lock(&data->update_lock);
287 data->in_max[nr] = IN_TO_REG(val);
288 sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
289 mutex_unlock(&data->update_lock);
293 #define show_in_offset(offset) \
294 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
295 show_in, NULL, offset); \
296 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
297 show_in_min, set_in_min, offset); \
298 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
299 show_in_max, set_in_max, offset);
308 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
311 struct sis5595_data *data = sis5595_update_device(dev);
312 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
315 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr,
318 struct sis5595_data *data = sis5595_update_device(dev);
319 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
322 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr,
323 const char *buf, size_t count)
325 struct sis5595_data *data = dev_get_drvdata(dev);
329 err = kstrtol(buf, 10, &val);
333 mutex_lock(&data->update_lock);
334 data->temp_over = TEMP_TO_REG(val);
335 sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
336 mutex_unlock(&data->update_lock);
340 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr,
343 struct sis5595_data *data = sis5595_update_device(dev);
344 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
347 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr,
348 const char *buf, size_t count)
350 struct sis5595_data *data = dev_get_drvdata(dev);
354 err = kstrtol(buf, 10, &val);
358 mutex_lock(&data->update_lock);
359 data->temp_hyst = TEMP_TO_REG(val);
360 sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
361 mutex_unlock(&data->update_lock);
365 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
366 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
367 show_temp_over, set_temp_over);
368 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
369 show_temp_hyst, set_temp_hyst);
372 static ssize_t show_fan(struct device *dev, struct device_attribute *da,
375 struct sis5595_data *data = sis5595_update_device(dev);
376 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
377 int nr = attr->index;
378 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
379 DIV_FROM_REG(data->fan_div[nr])));
382 static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
385 struct sis5595_data *data = sis5595_update_device(dev);
386 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
387 int nr = attr->index;
388 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
389 DIV_FROM_REG(data->fan_div[nr])));
392 static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
393 const char *buf, size_t count)
395 struct sis5595_data *data = dev_get_drvdata(dev);
396 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
397 int nr = attr->index;
401 err = kstrtoul(buf, 10, &val);
405 mutex_lock(&data->update_lock);
406 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
407 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
408 mutex_unlock(&data->update_lock);
412 static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
415 struct sis5595_data *data = sis5595_update_device(dev);
416 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
417 int nr = attr->index;
418 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
422 * Note: we save and restore the fan minimum here, because its value is
423 * determined in part by the fan divisor. This follows the principle of
424 * least surprise; the user doesn't expect the fan minimum to change just
425 * because the divisor changed.
427 static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
428 const char *buf, size_t count)
430 struct sis5595_data *data = dev_get_drvdata(dev);
431 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
432 int nr = attr->index;
438 err = kstrtoul(buf, 10, &val);
442 mutex_lock(&data->update_lock);
443 min = FAN_FROM_REG(data->fan_min[nr],
444 DIV_FROM_REG(data->fan_div[nr]));
445 reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
449 data->fan_div[nr] = 0;
452 data->fan_div[nr] = 1;
455 data->fan_div[nr] = 2;
458 data->fan_div[nr] = 3;
462 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",
464 mutex_unlock(&data->update_lock);
470 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
473 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
476 sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
478 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
479 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
480 mutex_unlock(&data->update_lock);
484 #define show_fan_offset(offset) \
485 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
486 show_fan, NULL, offset - 1); \
487 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
488 show_fan_min, set_fan_min, offset - 1); \
489 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
490 show_fan_div, set_fan_div, offset - 1);
496 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
499 struct sis5595_data *data = sis5595_update_device(dev);
500 return sprintf(buf, "%d\n", data->alarms);
502 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
504 static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
507 struct sis5595_data *data = sis5595_update_device(dev);
508 int nr = to_sensor_dev_attr(da)->index;
509 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
511 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
512 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
513 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
514 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
515 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15);
516 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
517 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
518 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15);
520 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
523 struct sis5595_data *data = dev_get_drvdata(dev);
524 return sprintf(buf, "%s\n", data->name);
526 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
528 static struct attribute *sis5595_attributes[] = {
529 &sensor_dev_attr_in0_input.dev_attr.attr,
530 &sensor_dev_attr_in0_min.dev_attr.attr,
531 &sensor_dev_attr_in0_max.dev_attr.attr,
532 &sensor_dev_attr_in0_alarm.dev_attr.attr,
533 &sensor_dev_attr_in1_input.dev_attr.attr,
534 &sensor_dev_attr_in1_min.dev_attr.attr,
535 &sensor_dev_attr_in1_max.dev_attr.attr,
536 &sensor_dev_attr_in1_alarm.dev_attr.attr,
537 &sensor_dev_attr_in2_input.dev_attr.attr,
538 &sensor_dev_attr_in2_min.dev_attr.attr,
539 &sensor_dev_attr_in2_max.dev_attr.attr,
540 &sensor_dev_attr_in2_alarm.dev_attr.attr,
541 &sensor_dev_attr_in3_input.dev_attr.attr,
542 &sensor_dev_attr_in3_min.dev_attr.attr,
543 &sensor_dev_attr_in3_max.dev_attr.attr,
544 &sensor_dev_attr_in3_alarm.dev_attr.attr,
546 &sensor_dev_attr_fan1_input.dev_attr.attr,
547 &sensor_dev_attr_fan1_min.dev_attr.attr,
548 &sensor_dev_attr_fan1_div.dev_attr.attr,
549 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
550 &sensor_dev_attr_fan2_input.dev_attr.attr,
551 &sensor_dev_attr_fan2_min.dev_attr.attr,
552 &sensor_dev_attr_fan2_div.dev_attr.attr,
553 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
555 &dev_attr_alarms.attr,
560 static const struct attribute_group sis5595_group = {
561 .attrs = sis5595_attributes,
564 static struct attribute *sis5595_attributes_in4[] = {
565 &sensor_dev_attr_in4_input.dev_attr.attr,
566 &sensor_dev_attr_in4_min.dev_attr.attr,
567 &sensor_dev_attr_in4_max.dev_attr.attr,
568 &sensor_dev_attr_in4_alarm.dev_attr.attr,
572 static const struct attribute_group sis5595_group_in4 = {
573 .attrs = sis5595_attributes_in4,
576 static struct attribute *sis5595_attributes_temp1[] = {
577 &dev_attr_temp1_input.attr,
578 &dev_attr_temp1_max.attr,
579 &dev_attr_temp1_max_hyst.attr,
580 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
584 static const struct attribute_group sis5595_group_temp1 = {
585 .attrs = sis5595_attributes_temp1,
588 /* This is called when the module is loaded */
589 static int sis5595_probe(struct platform_device *pdev)
593 struct sis5595_data *data;
594 struct resource *res;
597 /* Reserve the ISA region */
598 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
599 if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT,
600 sis5595_driver.driver.name))
603 data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data),
608 mutex_init(&data->lock);
609 mutex_init(&data->update_lock);
610 data->addr = res->start;
611 data->name = "sis5595";
612 platform_set_drvdata(pdev, data);
615 * Check revision and pin registers to determine whether 4 or 5 voltages
617 data->revision = s_bridge->revision;
618 /* 4 voltages, 1 temp */
620 if (data->revision >= REV2MIN) {
621 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
623 /* 5 voltages, no temps */
627 /* Initialize the SIS5595 chip */
628 sis5595_init_device(data);
630 /* A few vars need to be filled upon startup */
631 for (i = 0; i < 2; i++) {
632 data->fan_min[i] = sis5595_read_value(data,
633 SIS5595_REG_FAN_MIN(i));
636 /* Register sysfs hooks */
637 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group);
640 if (data->maxins == 4) {
641 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4);
643 goto exit_remove_files;
645 err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1);
647 goto exit_remove_files;
650 data->hwmon_dev = hwmon_device_register(&pdev->dev);
651 if (IS_ERR(data->hwmon_dev)) {
652 err = PTR_ERR(data->hwmon_dev);
653 goto exit_remove_files;
659 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
660 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
661 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
665 static int sis5595_remove(struct platform_device *pdev)
667 struct sis5595_data *data = platform_get_drvdata(pdev);
669 hwmon_device_unregister(data->hwmon_dev);
670 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
671 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
672 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
678 /* ISA access must be locked explicitly. */
679 static int sis5595_read_value(struct sis5595_data *data, u8 reg)
683 mutex_lock(&data->lock);
684 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
685 res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
686 mutex_unlock(&data->lock);
690 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
692 mutex_lock(&data->lock);
693 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
694 outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
695 mutex_unlock(&data->lock);
698 /* Called when we have found a new SIS5595. */
699 static void sis5595_init_device(struct sis5595_data *data)
701 u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
702 if (!(config & 0x01))
703 sis5595_write_value(data, SIS5595_REG_CONFIG,
704 (config & 0xf7) | 0x01);
707 static struct sis5595_data *sis5595_update_device(struct device *dev)
709 struct sis5595_data *data = dev_get_drvdata(dev);
712 mutex_lock(&data->update_lock);
714 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
717 for (i = 0; i <= data->maxins; i++) {
719 sis5595_read_value(data, SIS5595_REG_IN(i));
721 sis5595_read_value(data,
722 SIS5595_REG_IN_MIN(i));
724 sis5595_read_value(data,
725 SIS5595_REG_IN_MAX(i));
727 for (i = 0; i < 2; i++) {
729 sis5595_read_value(data, SIS5595_REG_FAN(i));
731 sis5595_read_value(data,
732 SIS5595_REG_FAN_MIN(i));
734 if (data->maxins == 3) {
736 sis5595_read_value(data, SIS5595_REG_TEMP);
738 sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
740 sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
742 i = sis5595_read_value(data, SIS5595_REG_FANDIV);
743 data->fan_div[0] = (i >> 4) & 0x03;
744 data->fan_div[1] = i >> 6;
746 sis5595_read_value(data, SIS5595_REG_ALARM1) |
747 (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
748 data->last_updated = jiffies;
752 mutex_unlock(&data->update_lock);
757 static const struct pci_device_id sis5595_pci_ids[] = {
758 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
762 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
764 static int blacklist[] = {
765 PCI_DEVICE_ID_SI_540,
766 PCI_DEVICE_ID_SI_550,
767 PCI_DEVICE_ID_SI_630,
768 PCI_DEVICE_ID_SI_645,
769 PCI_DEVICE_ID_SI_730,
770 PCI_DEVICE_ID_SI_735,
771 PCI_DEVICE_ID_SI_5511, /*
772 * 5513 chip has the 0008 device but
773 * that ID shows up in other chips so we
774 * use the 5511 ID for recognition
776 PCI_DEVICE_ID_SI_5597,
777 PCI_DEVICE_ID_SI_5598,
780 static int sis5595_device_add(unsigned short address)
782 struct resource res = {
784 .end = address + SIS5595_EXTENT - 1,
786 .flags = IORESOURCE_IO,
790 err = acpi_check_resource_conflict(&res);
794 pdev = platform_device_alloc("sis5595", address);
797 pr_err("Device allocation failed\n");
801 err = platform_device_add_resources(pdev, &res, 1);
803 pr_err("Device resource addition failed (%d)\n", err);
804 goto exit_device_put;
807 err = platform_device_add(pdev);
809 pr_err("Device addition failed (%d)\n", err);
810 goto exit_device_put;
816 platform_device_put(pdev);
821 static int sis5595_pci_probe(struct pci_dev *dev,
822 const struct pci_device_id *id)
828 for (i = blacklist; *i != 0; i++) {
830 d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
833 "Looked for SIS5595 but found unsupported device %.4x\n",
840 force_addr &= ~(SIS5595_EXTENT - 1);
842 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
843 pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
846 if (PCIBIOS_SUCCESSFUL !=
847 pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
848 dev_err(&dev->dev, "Failed to read ISA address\n");
852 address &= ~(SIS5595_EXTENT - 1);
855 "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
858 if (force_addr && address != force_addr) {
859 /* doesn't work for some chips? */
860 dev_err(&dev->dev, "Failed to force ISA address\n");
864 if (PCIBIOS_SUCCESSFUL !=
865 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
866 dev_err(&dev->dev, "Failed to read enable register\n");
869 if (!(enable & 0x80)) {
870 if ((PCIBIOS_SUCCESSFUL !=
871 pci_write_config_byte(dev, SIS5595_ENABLE_REG,
873 || (PCIBIOS_SUCCESSFUL !=
874 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
875 || (!(enable & 0x80))) {
876 /* doesn't work for some chips! */
877 dev_err(&dev->dev, "Failed to enable HWM device\n");
882 if (platform_driver_register(&sis5595_driver)) {
883 dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
887 s_bridge = pci_dev_get(dev);
888 /* Sets global pdev as a side effect */
889 if (sis5595_device_add(address))
890 goto exit_unregister;
893 * Always return failure here. This is to allow other drivers to bind
894 * to this pci device. We don't really want to have control over the
895 * pci device, we only wanted to read as few register values from it.
901 platform_driver_unregister(&sis5595_driver);
906 static struct pci_driver sis5595_pci_driver = {
908 .id_table = sis5595_pci_ids,
909 .probe = sis5595_pci_probe,
912 static int __init sm_sis5595_init(void)
914 return pci_register_driver(&sis5595_pci_driver);
917 static void __exit sm_sis5595_exit(void)
919 pci_unregister_driver(&sis5595_pci_driver);
920 if (s_bridge != NULL) {
921 platform_device_unregister(pdev);
922 platform_driver_unregister(&sis5595_driver);
923 pci_dev_put(s_bridge);
928 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
929 MODULE_DESCRIPTION("SiS 5595 Sensor device");
930 MODULE_LICENSE("GPL");
932 module_init(sm_sis5595_init);
933 module_exit(sm_sis5595_exit);