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 #include <linux/module.h>
54 #include <linux/slab.h>
55 #include <linux/ioport.h>
56 #include <linux/pci.h>
57 #include <linux/platform_device.h>
58 #include <linux/hwmon.h>
59 #include <linux/err.h>
60 #include <linux/init.h>
61 #include <linux/jiffies.h>
62 #include <linux/mutex.h>
63 #include <linux/sysfs.h>
67 /* If force_addr is set to anything different from 0, we forcibly enable
68 the device at the given address. */
69 static u16 force_addr;
70 module_param(force_addr, ushort, 0);
71 MODULE_PARM_DESC(force_addr,
72 "Initialize the base address of the sensors");
74 static struct platform_device *pdev;
76 /* Many SIS5595 constants specified below */
78 /* Length of ISA address segment */
79 #define SIS5595_EXTENT 8
80 /* PCI Config Registers */
81 #define SIS5595_REVISION_REG 0x08
82 #define SIS5595_BASE_REG 0x68
83 #define SIS5595_PIN_REG 0x7A
84 #define SIS5595_ENABLE_REG 0x7B
86 /* Where are the ISA address/data registers relative to the base address */
87 #define SIS5595_ADDR_REG_OFFSET 5
88 #define SIS5595_DATA_REG_OFFSET 6
90 /* The SIS5595 registers */
91 #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
92 #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
93 #define SIS5595_REG_IN(nr) (0x20 + (nr))
95 #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
96 #define SIS5595_REG_FAN(nr) (0x28 + (nr))
98 /* On the first version of the chip, the temp registers are separate.
99 On the second version,
100 TEMP pin is shared with IN4, configured in PCI register 0x7A.
101 The registers are the same as well.
102 OVER and HYST are really MAX and MIN. */
105 #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \
106 SIS5595_REG_IN(4) : 0x27
107 #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \
108 SIS5595_REG_IN_MAX(4) : 0x39
109 #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \
110 SIS5595_REG_IN_MIN(4) : 0x3a
112 #define SIS5595_REG_CONFIG 0x40
113 #define SIS5595_REG_ALARM1 0x41
114 #define SIS5595_REG_ALARM2 0x42
115 #define SIS5595_REG_FANDIV 0x47
117 /* Conversions. Limit checking is only done on the TO_REG
120 /* IN: mV, (0V to 4.08V)
122 static inline u8 IN_TO_REG(unsigned long val)
124 unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
125 return (nval + 8) / 16;
127 #define IN_FROM_REG(val) ((val) * 16)
129 static inline u8 FAN_TO_REG(long rpm, int div)
133 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
136 static inline int FAN_FROM_REG(u8 val, int div)
138 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
141 /* TEMP: mC (-54.12C to +157.53C)
142 REG: 0.83C/bit + 52.12, two's complement */
143 static inline int TEMP_FROM_REG(s8 val)
145 return val * 830 + 52120;
147 static inline s8 TEMP_TO_REG(int val)
149 int nval = SENSORS_LIMIT(val, -54120, 157530) ;
150 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
153 /* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
154 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
155 static inline u8 DIV_TO_REG(int val)
157 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
159 #define DIV_FROM_REG(val) (1 << (val))
161 /* For each registered chip, we need to keep some data in memory.
162 The structure is dynamically allocated. */
163 struct sis5595_data {
166 struct class_device *class_dev;
169 struct mutex update_lock;
170 char valid; /* !=0 if following fields are valid */
171 unsigned long last_updated; /* In jiffies */
172 char maxins; /* == 3 if temp enabled, otherwise == 4 */
173 u8 revision; /* Reg. value */
175 u8 in[5]; /* Register value */
176 u8 in_max[5]; /* Register value */
177 u8 in_min[5]; /* Register value */
178 u8 fan[2]; /* Register value */
179 u8 fan_min[2]; /* Register value */
180 s8 temp; /* Register value */
181 s8 temp_over; /* Register value */
182 s8 temp_hyst; /* Register value */
183 u8 fan_div[2]; /* Register encoding, shifted right */
184 u16 alarms; /* Register encoding, combined */
187 static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
189 static int sis5595_probe(struct platform_device *pdev);
190 static int sis5595_remove(struct platform_device *pdev);
192 static int sis5595_read_value(struct sis5595_data *data, u8 reg);
193 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
194 static struct sis5595_data *sis5595_update_device(struct device *dev);
195 static void sis5595_init_device(struct sis5595_data *data);
197 static struct platform_driver sis5595_driver = {
199 .owner = THIS_MODULE,
202 .probe = sis5595_probe,
203 .remove = __devexit_p(sis5595_remove),
207 static ssize_t show_in(struct device *dev, char *buf, int nr)
209 struct sis5595_data *data = sis5595_update_device(dev);
210 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
213 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
215 struct sis5595_data *data = sis5595_update_device(dev);
216 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
219 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
221 struct sis5595_data *data = sis5595_update_device(dev);
222 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
225 static ssize_t set_in_min(struct device *dev, const char *buf,
226 size_t count, int nr)
228 struct sis5595_data *data = dev_get_drvdata(dev);
229 unsigned long val = simple_strtoul(buf, NULL, 10);
231 mutex_lock(&data->update_lock);
232 data->in_min[nr] = IN_TO_REG(val);
233 sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
234 mutex_unlock(&data->update_lock);
238 static ssize_t set_in_max(struct device *dev, const char *buf,
239 size_t count, int nr)
241 struct sis5595_data *data = dev_get_drvdata(dev);
242 unsigned long val = simple_strtoul(buf, NULL, 10);
244 mutex_lock(&data->update_lock);
245 data->in_max[nr] = IN_TO_REG(val);
246 sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
247 mutex_unlock(&data->update_lock);
251 #define show_in_offset(offset) \
253 show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \
255 return show_in(dev, buf, offset); \
257 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
258 show_in##offset, NULL); \
260 show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
262 return show_in_min(dev, buf, offset); \
265 show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
267 return show_in_max(dev, buf, offset); \
269 static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \
270 const char *buf, size_t count) \
272 return set_in_min(dev, buf, count, offset); \
274 static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \
275 const char *buf, size_t count) \
277 return set_in_max(dev, buf, count, offset); \
279 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
280 show_in##offset##_min, set_in##offset##_min); \
281 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
282 show_in##offset##_max, set_in##offset##_max);
291 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
293 struct sis5595_data *data = sis5595_update_device(dev);
294 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
297 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
299 struct sis5595_data *data = sis5595_update_device(dev);
300 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
303 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
305 struct sis5595_data *data = dev_get_drvdata(dev);
306 long val = simple_strtol(buf, NULL, 10);
308 mutex_lock(&data->update_lock);
309 data->temp_over = TEMP_TO_REG(val);
310 sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
311 mutex_unlock(&data->update_lock);
315 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
317 struct sis5595_data *data = sis5595_update_device(dev);
318 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
321 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
323 struct sis5595_data *data = dev_get_drvdata(dev);
324 long val = simple_strtol(buf, NULL, 10);
326 mutex_lock(&data->update_lock);
327 data->temp_hyst = TEMP_TO_REG(val);
328 sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
329 mutex_unlock(&data->update_lock);
333 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
334 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
335 show_temp_over, set_temp_over);
336 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
337 show_temp_hyst, set_temp_hyst);
340 static ssize_t show_fan(struct device *dev, char *buf, int nr)
342 struct sis5595_data *data = sis5595_update_device(dev);
343 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
344 DIV_FROM_REG(data->fan_div[nr])) );
347 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
349 struct sis5595_data *data = sis5595_update_device(dev);
350 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
351 DIV_FROM_REG(data->fan_div[nr])) );
354 static ssize_t set_fan_min(struct device *dev, const char *buf,
355 size_t count, int nr)
357 struct sis5595_data *data = dev_get_drvdata(dev);
358 unsigned long val = simple_strtoul(buf, NULL, 10);
360 mutex_lock(&data->update_lock);
361 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
362 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
363 mutex_unlock(&data->update_lock);
367 static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
369 struct sis5595_data *data = sis5595_update_device(dev);
370 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
373 /* Note: we save and restore the fan minimum here, because its value is
374 determined in part by the fan divisor. This follows the principle of
375 least surprise; the user doesn't expect the fan minimum to change just
376 because the divisor changed. */
377 static ssize_t set_fan_div(struct device *dev, const char *buf,
378 size_t count, int nr)
380 struct sis5595_data *data = dev_get_drvdata(dev);
382 unsigned long val = simple_strtoul(buf, NULL, 10);
385 mutex_lock(&data->update_lock);
386 min = FAN_FROM_REG(data->fan_min[nr],
387 DIV_FROM_REG(data->fan_div[nr]));
388 reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
391 case 1: data->fan_div[nr] = 0; break;
392 case 2: data->fan_div[nr] = 1; break;
393 case 4: data->fan_div[nr] = 2; break;
394 case 8: data->fan_div[nr] = 3; break;
396 dev_err(dev, "fan_div value %ld not "
397 "supported. Choose one of 1, 2, 4 or 8!\n", val);
398 mutex_unlock(&data->update_lock);
404 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
407 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
410 sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
412 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
413 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
414 mutex_unlock(&data->update_lock);
418 #define show_fan_offset(offset) \
419 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
421 return show_fan(dev, buf, offset - 1); \
423 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
425 return show_fan_min(dev, buf, offset - 1); \
427 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
429 return show_fan_div(dev, buf, offset - 1); \
431 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
432 const char *buf, size_t count) \
434 return set_fan_min(dev, buf, count, offset - 1); \
436 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
437 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
438 show_fan_##offset##_min, set_fan_##offset##_min);
443 static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf,
446 return set_fan_div(dev, buf, count, 0) ;
449 static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf,
452 return set_fan_div(dev, buf, count, 1) ;
454 static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
455 show_fan_1_div, set_fan_1_div);
456 static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
457 show_fan_2_div, set_fan_2_div);
460 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
462 struct sis5595_data *data = sis5595_update_device(dev);
463 return sprintf(buf, "%d\n", data->alarms);
465 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
467 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
470 struct sis5595_data *data = dev_get_drvdata(dev);
471 return sprintf(buf, "%s\n", data->name);
473 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
475 static struct attribute *sis5595_attributes[] = {
476 &dev_attr_in0_input.attr,
477 &dev_attr_in0_min.attr,
478 &dev_attr_in0_max.attr,
479 &dev_attr_in1_input.attr,
480 &dev_attr_in1_min.attr,
481 &dev_attr_in1_max.attr,
482 &dev_attr_in2_input.attr,
483 &dev_attr_in2_min.attr,
484 &dev_attr_in2_max.attr,
485 &dev_attr_in3_input.attr,
486 &dev_attr_in3_min.attr,
487 &dev_attr_in3_max.attr,
489 &dev_attr_fan1_input.attr,
490 &dev_attr_fan1_min.attr,
491 &dev_attr_fan1_div.attr,
492 &dev_attr_fan2_input.attr,
493 &dev_attr_fan2_min.attr,
494 &dev_attr_fan2_div.attr,
496 &dev_attr_alarms.attr,
501 static const struct attribute_group sis5595_group = {
502 .attrs = sis5595_attributes,
505 static struct attribute *sis5595_attributes_opt[] = {
506 &dev_attr_in4_input.attr,
507 &dev_attr_in4_min.attr,
508 &dev_attr_in4_max.attr,
510 &dev_attr_temp1_input.attr,
511 &dev_attr_temp1_max.attr,
512 &dev_attr_temp1_max_hyst.attr,
516 static const struct attribute_group sis5595_group_opt = {
517 .attrs = sis5595_attributes_opt,
520 /* This is called when the module is loaded */
521 static int __devinit sis5595_probe(struct platform_device *pdev)
525 struct sis5595_data *data;
526 struct resource *res;
529 /* Reserve the ISA region */
530 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
531 if (!request_region(res->start, SIS5595_EXTENT,
532 sis5595_driver.driver.name)) {
537 if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
542 mutex_init(&data->lock);
543 mutex_init(&data->update_lock);
544 data->addr = res->start;
545 data->name = "sis5595";
546 platform_set_drvdata(pdev, data);
548 /* Check revision and pin registers to determine whether 4 or 5 voltages */
549 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
550 /* 4 voltages, 1 temp */
552 if (data->revision >= REV2MIN) {
553 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
555 /* 5 voltages, no temps */
559 /* Initialize the SIS5595 chip */
560 sis5595_init_device(data);
562 /* A few vars need to be filled upon startup */
563 for (i = 0; i < 2; i++) {
564 data->fan_min[i] = sis5595_read_value(data,
565 SIS5595_REG_FAN_MIN(i));
568 /* Register sysfs hooks */
569 if ((err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group)))
571 if (data->maxins == 4) {
572 if ((err = device_create_file(&pdev->dev,
573 &dev_attr_in4_input))
574 || (err = device_create_file(&pdev->dev,
576 || (err = device_create_file(&pdev->dev,
578 goto exit_remove_files;
580 if ((err = device_create_file(&pdev->dev,
581 &dev_attr_temp1_input))
582 || (err = device_create_file(&pdev->dev,
583 &dev_attr_temp1_max))
584 || (err = device_create_file(&pdev->dev,
585 &dev_attr_temp1_max_hyst)))
586 goto exit_remove_files;
589 data->class_dev = hwmon_device_register(&pdev->dev);
590 if (IS_ERR(data->class_dev)) {
591 err = PTR_ERR(data->class_dev);
592 goto exit_remove_files;
598 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
599 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
603 release_region(res->start, SIS5595_EXTENT);
608 static int __devexit sis5595_remove(struct platform_device *pdev)
610 struct sis5595_data *data = platform_get_drvdata(pdev);
612 hwmon_device_unregister(data->class_dev);
613 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
614 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
616 release_region(data->addr, SIS5595_EXTENT);
617 platform_set_drvdata(pdev, NULL);
624 /* ISA access must be locked explicitly. */
625 static int sis5595_read_value(struct sis5595_data *data, u8 reg)
629 mutex_lock(&data->lock);
630 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
631 res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
632 mutex_unlock(&data->lock);
636 static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
638 mutex_lock(&data->lock);
639 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
640 outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
641 mutex_unlock(&data->lock);
644 /* Called when we have found a new SIS5595. */
645 static void __devinit sis5595_init_device(struct sis5595_data *data)
647 u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
648 if (!(config & 0x01))
649 sis5595_write_value(data, SIS5595_REG_CONFIG,
650 (config & 0xf7) | 0x01);
653 static struct sis5595_data *sis5595_update_device(struct device *dev)
655 struct sis5595_data *data = dev_get_drvdata(dev);
658 mutex_lock(&data->update_lock);
660 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
663 for (i = 0; i <= data->maxins; i++) {
665 sis5595_read_value(data, SIS5595_REG_IN(i));
667 sis5595_read_value(data,
668 SIS5595_REG_IN_MIN(i));
670 sis5595_read_value(data,
671 SIS5595_REG_IN_MAX(i));
673 for (i = 0; i < 2; i++) {
675 sis5595_read_value(data, SIS5595_REG_FAN(i));
677 sis5595_read_value(data,
678 SIS5595_REG_FAN_MIN(i));
680 if (data->maxins == 3) {
682 sis5595_read_value(data, SIS5595_REG_TEMP);
684 sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
686 sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
688 i = sis5595_read_value(data, SIS5595_REG_FANDIV);
689 data->fan_div[0] = (i >> 4) & 0x03;
690 data->fan_div[1] = i >> 6;
692 sis5595_read_value(data, SIS5595_REG_ALARM1) |
693 (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
694 data->last_updated = jiffies;
698 mutex_unlock(&data->update_lock);
703 static struct pci_device_id sis5595_pci_ids[] = {
704 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
708 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
710 static int blacklist[] __devinitdata = {
711 PCI_DEVICE_ID_SI_540,
712 PCI_DEVICE_ID_SI_550,
713 PCI_DEVICE_ID_SI_630,
714 PCI_DEVICE_ID_SI_645,
715 PCI_DEVICE_ID_SI_730,
716 PCI_DEVICE_ID_SI_735,
717 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
718 that ID shows up in other chips so we
719 use the 5511 ID for recognition */
720 PCI_DEVICE_ID_SI_5597,
721 PCI_DEVICE_ID_SI_5598,
724 static int __devinit sis5595_device_add(unsigned short address)
726 struct resource res = {
728 .end = address + SIS5595_EXTENT - 1,
730 .flags = IORESOURCE_IO,
734 pdev = platform_device_alloc("sis5595", address);
737 printk(KERN_ERR "sis5595: Device allocation failed\n");
741 err = platform_device_add_resources(pdev, &res, 1);
743 printk(KERN_ERR "sis5595: Device resource addition failed "
745 goto exit_device_put;
748 err = platform_device_add(pdev);
750 printk(KERN_ERR "sis5595: Device addition failed (%d)\n",
752 goto exit_device_put;
758 platform_device_put(pdev);
763 static int __devinit sis5595_pci_probe(struct pci_dev *dev,
764 const struct pci_device_id *id)
770 for (i = blacklist; *i != 0; i++) {
772 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
774 dev_err(&dev->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);