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 <khali@linux-fr.org>
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>
71 /* If force_addr is set to anything different from 0, we forcibly enable
72 the device at the given address. */
73 static u16 force_addr;
74 module_param(force_addr, ushort, 0);
75 MODULE_PARM_DESC(force_addr,
76 "Initialize the base address of the sensors");
78 static struct platform_device *pdev;
80 /* Many SIS5595 constants specified below */
82 /* Length of ISA address segment */
83 #define SIS5595_EXTENT 8
84 /* PCI Config Registers */
85 #define SIS5595_BASE_REG 0x68
86 #define SIS5595_PIN_REG 0x7A
87 #define SIS5595_ENABLE_REG 0x7B
89 /* Where are the ISA address/data registers relative to the base address */
90 #define SIS5595_ADDR_REG_OFFSET 5
91 #define SIS5595_DATA_REG_OFFSET 6
93 /* The SIS5595 registers */
94 #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
95 #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
96 #define SIS5595_REG_IN(nr) (0x20 + (nr))
98 #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
99 #define SIS5595_REG_FAN(nr) (0x28 + (nr))
101 /* On the first version of the chip, the temp registers are separate.
102 On the second version,
103 TEMP pin is shared with IN4, configured in PCI register 0x7A.
104 The registers are the same as well.
105 OVER and HYST are really MAX and MIN. */
108 #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \
109 SIS5595_REG_IN(4) : 0x27
110 #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \
111 SIS5595_REG_IN_MAX(4) : 0x39
112 #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \
113 SIS5595_REG_IN_MIN(4) : 0x3a
115 #define SIS5595_REG_CONFIG 0x40
116 #define SIS5595_REG_ALARM1 0x41
117 #define SIS5595_REG_ALARM2 0x42
118 #define SIS5595_REG_FANDIV 0x47
120 /* Conversions. Limit checking is only done on the TO_REG
123 /* IN: mV, (0V to 4.08V)
125 static inline u8 IN_TO_REG(unsigned long val)
127 unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
128 return (nval + 8) / 16;
130 #define IN_FROM_REG(val) ((val) * 16)
132 static inline u8 FAN_TO_REG(long rpm, int div)
136 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
139 static inline int FAN_FROM_REG(u8 val, int div)
141 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
144 /* TEMP: mC (-54.12C to +157.53C)
145 REG: 0.83C/bit + 52.12, two's complement */
146 static inline int TEMP_FROM_REG(s8 val)
148 return val * 830 + 52120;
150 static inline s8 TEMP_TO_REG(int val)
152 int nval = SENSORS_LIMIT(val, -54120, 157530) ;
153 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
156 /* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
157 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
158 static inline u8 DIV_TO_REG(int val)
160 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
162 #define DIV_FROM_REG(val) (1 << (val))
164 /* For each registered chip, we need to keep some data in memory.
165 The structure is dynamically allocated. */
166 struct sis5595_data {
169 struct device *hwmon_dev;
172 struct mutex update_lock;
173 char valid; /* !=0 if following fields are valid */
174 unsigned long last_updated; /* In jiffies */
175 char maxins; /* == 3 if temp enabled, otherwise == 4 */
176 u8 revision; /* Reg. value */
178 u8 in[5]; /* Register value */
179 u8 in_max[5]; /* Register value */
180 u8 in_min[5]; /* Register value */
181 u8 fan[2]; /* Register value */
182 u8 fan_min[2]; /* Register value */
183 s8 temp; /* Register value */
184 s8 temp_over; /* Register value */
185 s8 temp_hyst; /* Register value */
186 u8 fan_div[2]; /* Register encoding, shifted right */
187 u16 alarms; /* Register encoding, combined */
190 static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
192 static int sis5595_probe(struct platform_device *pdev);
193 static int __devexit sis5595_remove(struct platform_device *pdev);
195 static int sis5595_read_value(struct sis5595_data *data, u8 reg);
196 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
197 static struct sis5595_data *sis5595_update_device(struct device *dev);
198 static void sis5595_init_device(struct sis5595_data *data);
200 static struct platform_driver sis5595_driver = {
202 .owner = THIS_MODULE,
205 .probe = sis5595_probe,
206 .remove = __devexit_p(sis5595_remove),
210 static ssize_t show_in(struct device *dev, struct device_attribute *da,
213 struct sis5595_data *data = sis5595_update_device(dev);
214 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
215 int nr = attr->index;
216 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
219 static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
222 struct sis5595_data *data = sis5595_update_device(dev);
223 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
224 int nr = attr->index;
225 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
228 static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
231 struct sis5595_data *data = sis5595_update_device(dev);
232 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
233 int nr = attr->index;
234 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
237 static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
238 const char *buf, size_t count)
240 struct sis5595_data *data = dev_get_drvdata(dev);
241 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
242 int nr = attr->index;
243 unsigned long val = simple_strtoul(buf, NULL, 10);
245 mutex_lock(&data->update_lock);
246 data->in_min[nr] = IN_TO_REG(val);
247 sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
248 mutex_unlock(&data->update_lock);
252 static ssize_t set_in_max(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;
258 unsigned long val = simple_strtoul(buf, NULL, 10);
260 mutex_lock(&data->update_lock);
261 data->in_max[nr] = IN_TO_REG(val);
262 sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
263 mutex_unlock(&data->update_lock);
267 #define show_in_offset(offset) \
268 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
269 show_in, NULL, offset); \
270 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
271 show_in_min, set_in_min, offset); \
272 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
273 show_in_max, set_in_max, offset);
282 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
284 struct sis5595_data *data = sis5595_update_device(dev);
285 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
288 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
290 struct sis5595_data *data = sis5595_update_device(dev);
291 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
294 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
296 struct sis5595_data *data = dev_get_drvdata(dev);
297 long val = simple_strtol(buf, NULL, 10);
299 mutex_lock(&data->update_lock);
300 data->temp_over = TEMP_TO_REG(val);
301 sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
302 mutex_unlock(&data->update_lock);
306 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
308 struct sis5595_data *data = sis5595_update_device(dev);
309 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
312 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
314 struct sis5595_data *data = dev_get_drvdata(dev);
315 long val = simple_strtol(buf, NULL, 10);
317 mutex_lock(&data->update_lock);
318 data->temp_hyst = TEMP_TO_REG(val);
319 sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
320 mutex_unlock(&data->update_lock);
324 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
325 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
326 show_temp_over, set_temp_over);
327 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
328 show_temp_hyst, set_temp_hyst);
331 static ssize_t show_fan(struct device *dev, struct device_attribute *da,
334 struct sis5595_data *data = sis5595_update_device(dev);
335 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
336 int nr = attr->index;
337 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
338 DIV_FROM_REG(data->fan_div[nr])) );
341 static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
344 struct sis5595_data *data = sis5595_update_device(dev);
345 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
346 int nr = attr->index;
347 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
348 DIV_FROM_REG(data->fan_div[nr])) );
351 static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
352 const char *buf, size_t count)
354 struct sis5595_data *data = dev_get_drvdata(dev);
355 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
356 int nr = attr->index;
357 unsigned long val = simple_strtoul(buf, NULL, 10);
359 mutex_lock(&data->update_lock);
360 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
361 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
362 mutex_unlock(&data->update_lock);
366 static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
369 struct sis5595_data *data = sis5595_update_device(dev);
370 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
371 int nr = attr->index;
372 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
375 /* Note: we save and restore the fan minimum here, because its value is
376 determined in part by the fan divisor. This follows the principle of
377 least surprise; the user doesn't expect the fan minimum to change just
378 because the divisor changed. */
379 static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
380 const char *buf, size_t count)
382 struct sis5595_data *data = dev_get_drvdata(dev);
383 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
384 int nr = attr->index;
386 unsigned long val = simple_strtoul(buf, NULL, 10);
389 mutex_lock(&data->update_lock);
390 min = FAN_FROM_REG(data->fan_min[nr],
391 DIV_FROM_REG(data->fan_div[nr]));
392 reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
395 case 1: data->fan_div[nr] = 0; break;
396 case 2: data->fan_div[nr] = 1; break;
397 case 4: data->fan_div[nr] = 2; break;
398 case 8: data->fan_div[nr] = 3; break;
400 dev_err(dev, "fan_div value %ld not "
401 "supported. Choose one of 1, 2, 4 or 8!\n", val);
402 mutex_unlock(&data->update_lock);
408 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
411 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
414 sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
416 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
417 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
418 mutex_unlock(&data->update_lock);
422 #define show_fan_offset(offset) \
423 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
424 show_fan, NULL, offset - 1); \
425 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
426 show_fan_min, set_fan_min, offset - 1); \
427 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
428 show_fan_div, set_fan_div, offset - 1);
434 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
436 struct sis5595_data *data = sis5595_update_device(dev);
437 return sprintf(buf, "%d\n", data->alarms);
439 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
441 static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
444 struct sis5595_data *data = sis5595_update_device(dev);
445 int nr = to_sensor_dev_attr(da)->index;
446 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
448 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
449 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
450 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
451 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
452 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15);
453 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
454 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
455 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15);
457 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
460 struct sis5595_data *data = dev_get_drvdata(dev);
461 return sprintf(buf, "%s\n", data->name);
463 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
465 static struct attribute *sis5595_attributes[] = {
466 &sensor_dev_attr_in0_input.dev_attr.attr,
467 &sensor_dev_attr_in0_min.dev_attr.attr,
468 &sensor_dev_attr_in0_max.dev_attr.attr,
469 &sensor_dev_attr_in0_alarm.dev_attr.attr,
470 &sensor_dev_attr_in1_input.dev_attr.attr,
471 &sensor_dev_attr_in1_min.dev_attr.attr,
472 &sensor_dev_attr_in1_max.dev_attr.attr,
473 &sensor_dev_attr_in1_alarm.dev_attr.attr,
474 &sensor_dev_attr_in2_input.dev_attr.attr,
475 &sensor_dev_attr_in2_min.dev_attr.attr,
476 &sensor_dev_attr_in2_max.dev_attr.attr,
477 &sensor_dev_attr_in2_alarm.dev_attr.attr,
478 &sensor_dev_attr_in3_input.dev_attr.attr,
479 &sensor_dev_attr_in3_min.dev_attr.attr,
480 &sensor_dev_attr_in3_max.dev_attr.attr,
481 &sensor_dev_attr_in3_alarm.dev_attr.attr,
483 &sensor_dev_attr_fan1_input.dev_attr.attr,
484 &sensor_dev_attr_fan1_min.dev_attr.attr,
485 &sensor_dev_attr_fan1_div.dev_attr.attr,
486 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
487 &sensor_dev_attr_fan2_input.dev_attr.attr,
488 &sensor_dev_attr_fan2_min.dev_attr.attr,
489 &sensor_dev_attr_fan2_div.dev_attr.attr,
490 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
492 &dev_attr_alarms.attr,
497 static const struct attribute_group sis5595_group = {
498 .attrs = sis5595_attributes,
501 static struct attribute *sis5595_attributes_in4[] = {
502 &sensor_dev_attr_in4_input.dev_attr.attr,
503 &sensor_dev_attr_in4_min.dev_attr.attr,
504 &sensor_dev_attr_in4_max.dev_attr.attr,
505 &sensor_dev_attr_in4_alarm.dev_attr.attr,
509 static const struct attribute_group sis5595_group_in4 = {
510 .attrs = sis5595_attributes_in4,
513 static struct attribute *sis5595_attributes_temp1[] = {
514 &dev_attr_temp1_input.attr,
515 &dev_attr_temp1_max.attr,
516 &dev_attr_temp1_max_hyst.attr,
517 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
521 static const struct attribute_group sis5595_group_temp1 = {
522 .attrs = sis5595_attributes_temp1,
525 /* This is called when the module is loaded */
526 static int __devinit sis5595_probe(struct platform_device *pdev)
530 struct sis5595_data *data;
531 struct resource *res;
534 /* Reserve the ISA region */
535 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
536 if (!request_region(res->start, SIS5595_EXTENT,
537 sis5595_driver.driver.name)) {
542 if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
547 mutex_init(&data->lock);
548 mutex_init(&data->update_lock);
549 data->addr = res->start;
550 data->name = "sis5595";
551 platform_set_drvdata(pdev, data);
553 /* Check revision and pin registers to determine whether 4 or 5 voltages */
554 data->revision = s_bridge->revision;
555 /* 4 voltages, 1 temp */
557 if (data->revision >= REV2MIN) {
558 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
560 /* 5 voltages, no temps */
564 /* Initialize the SIS5595 chip */
565 sis5595_init_device(data);
567 /* A few vars need to be filled upon startup */
568 for (i = 0; i < 2; i++) {
569 data->fan_min[i] = sis5595_read_value(data,
570 SIS5595_REG_FAN_MIN(i));
573 /* Register sysfs hooks */
574 if ((err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group)))
576 if (data->maxins == 4) {
577 if ((err = sysfs_create_group(&pdev->dev.kobj,
578 &sis5595_group_in4)))
579 goto exit_remove_files;
581 if ((err = sysfs_create_group(&pdev->dev.kobj,
582 &sis5595_group_temp1)))
583 goto exit_remove_files;
586 data->hwmon_dev = hwmon_device_register(&pdev->dev);
587 if (IS_ERR(data->hwmon_dev)) {
588 err = PTR_ERR(data->hwmon_dev);
589 goto exit_remove_files;
595 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
596 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
597 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
601 release_region(res->start, SIS5595_EXTENT);
606 static int __devexit sis5595_remove(struct platform_device *pdev)
608 struct sis5595_data *data = platform_get_drvdata(pdev);
610 hwmon_device_unregister(data->hwmon_dev);
611 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
612 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4);
613 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1);
615 release_region(data->addr, SIS5595_EXTENT);
616 platform_set_drvdata(pdev, NULL);
623 /* ISA access must be locked explicitly. */
624 static int sis5595_read_value(struct sis5595_data *data, u8 reg)
628 mutex_lock(&data->lock);
629 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
630 res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
631 mutex_unlock(&data->lock);
635 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
637 mutex_lock(&data->lock);
638 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
639 outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
640 mutex_unlock(&data->lock);
643 /* Called when we have found a new SIS5595. */
644 static void __devinit sis5595_init_device(struct sis5595_data *data)
646 u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
647 if (!(config & 0x01))
648 sis5595_write_value(data, SIS5595_REG_CONFIG,
649 (config & 0xf7) | 0x01);
652 static struct sis5595_data *sis5595_update_device(struct device *dev)
654 struct sis5595_data *data = dev_get_drvdata(dev);
657 mutex_lock(&data->update_lock);
659 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
662 for (i = 0; i <= data->maxins; i++) {
664 sis5595_read_value(data, SIS5595_REG_IN(i));
666 sis5595_read_value(data,
667 SIS5595_REG_IN_MIN(i));
669 sis5595_read_value(data,
670 SIS5595_REG_IN_MAX(i));
672 for (i = 0; i < 2; i++) {
674 sis5595_read_value(data, SIS5595_REG_FAN(i));
676 sis5595_read_value(data,
677 SIS5595_REG_FAN_MIN(i));
679 if (data->maxins == 3) {
681 sis5595_read_value(data, SIS5595_REG_TEMP);
683 sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
685 sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
687 i = sis5595_read_value(data, SIS5595_REG_FANDIV);
688 data->fan_div[0] = (i >> 4) & 0x03;
689 data->fan_div[1] = i >> 6;
691 sis5595_read_value(data, SIS5595_REG_ALARM1) |
692 (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
693 data->last_updated = jiffies;
697 mutex_unlock(&data->update_lock);
702 static const struct pci_device_id sis5595_pci_ids[] = {
703 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
707 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
709 static int blacklist[] __devinitdata = {
710 PCI_DEVICE_ID_SI_540,
711 PCI_DEVICE_ID_SI_550,
712 PCI_DEVICE_ID_SI_630,
713 PCI_DEVICE_ID_SI_645,
714 PCI_DEVICE_ID_SI_730,
715 PCI_DEVICE_ID_SI_735,
716 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
717 that ID shows up in other chips so we
718 use the 5511 ID for recognition */
719 PCI_DEVICE_ID_SI_5597,
720 PCI_DEVICE_ID_SI_5598,
723 static int __devinit sis5595_device_add(unsigned short address)
725 struct resource res = {
727 .end = address + SIS5595_EXTENT - 1,
729 .flags = IORESOURCE_IO,
733 err = acpi_check_resource_conflict(&res);
737 pdev = platform_device_alloc("sis5595", address);
740 pr_err("Device allocation failed\n");
744 err = platform_device_add_resources(pdev, &res, 1);
746 pr_err("Device resource addition failed (%d)\n", err);
747 goto exit_device_put;
750 err = platform_device_add(pdev);
752 pr_err("Device addition failed (%d)\n", err);
753 goto exit_device_put;
759 platform_device_put(pdev);
764 static int __devinit sis5595_pci_probe(struct pci_dev *dev,
765 const struct pci_device_id *id)
771 for (i = blacklist; *i != 0; i++) {
773 if ((d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL))) {
774 dev_err(&d->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i);
780 force_addr &= ~(SIS5595_EXTENT - 1);
782 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
783 pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
786 if (PCIBIOS_SUCCESSFUL !=
787 pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
788 dev_err(&dev->dev, "Failed to read ISA address\n");
792 address &= ~(SIS5595_EXTENT - 1);
794 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
797 if (force_addr && address != force_addr) {
798 /* doesn't work for some chips? */
799 dev_err(&dev->dev, "Failed to force ISA address\n");
803 if (PCIBIOS_SUCCESSFUL !=
804 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
805 dev_err(&dev->dev, "Failed to read enable register\n");
808 if (!(enable & 0x80)) {
809 if ((PCIBIOS_SUCCESSFUL !=
810 pci_write_config_byte(dev, SIS5595_ENABLE_REG,
812 || (PCIBIOS_SUCCESSFUL !=
813 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
814 || (!(enable & 0x80))) {
815 /* doesn't work for some chips! */
816 dev_err(&dev->dev, "Failed to enable HWM device\n");
821 if (platform_driver_register(&sis5595_driver)) {
822 dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
826 s_bridge = pci_dev_get(dev);
827 /* Sets global pdev as a side effect */
828 if (sis5595_device_add(address))
829 goto exit_unregister;
831 /* Always return failure here. This is to allow other drivers to bind
832 * to this pci device. We don't really want to have control over the
833 * pci device, we only wanted to read as few register values from it.
839 platform_driver_unregister(&sis5595_driver);
844 static struct pci_driver sis5595_pci_driver = {
846 .id_table = sis5595_pci_ids,
847 .probe = sis5595_pci_probe,
850 static int __init sm_sis5595_init(void)
852 return pci_register_driver(&sis5595_pci_driver);
855 static void __exit sm_sis5595_exit(void)
857 pci_unregister_driver(&sis5595_pci_driver);
858 if (s_bridge != NULL) {
859 platform_device_unregister(pdev);
860 platform_driver_unregister(&sis5595_driver);
861 pci_dev_put(s_bridge);
866 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
867 MODULE_DESCRIPTION("SiS 5595 Sensor device");
868 MODULE_LICENSE("GPL");
870 module_init(sm_sis5595_init);
871 module_exit(sm_sis5595_exit);