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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 sis5595.c - Part of lm_sensors, Linux kernel modules
3 for hardware monitoring
4
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>
10
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.
15
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.
20
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.
24*/
25
26/*
27 SiS southbridge has a LM78-like chip integrated on the same IC.
28 This driver is a customized copy of lm78.c
29
30 Supports following revisions:
31 Version PCI ID PCI Revision
32 1 1039/0008 AF or less
33 2 1039/0008 B0 or greater
34
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.
38
39 NOT SUPPORTED PCI ID BLACKLIST PCI ID
40 540 0008 0540
41 550 0008 0550
42 5513 0008 5511
43 5581 0008 5597
44 5582 0008 5597
45 5597 0008 5597
46 5598 0008 5597/5598
47 630 0008 0630
48 645 0008 0645
49 730 0008 0730
50 735 0008 0735
51*/
52
53#include <linux/module.h>
54#include <linux/slab.h>
55#include <linux/ioport.h>
56#include <linux/pci.h>
Jean Delvare17e7dc42007-06-09 10:11:16 -040057#include <linux/platform_device.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040058#include <linux/hwmon.h>
Jean Delvare1f5f48d2007-06-09 10:11:16 -040059#include <linux/hwmon-sysfs.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040060#include <linux/err.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#include <linux/init.h>
Dominik Hacklff324092005-05-16 18:12:18 +020062#include <linux/jiffies.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010063#include <linux/mutex.h>
Jean Delvarea5ebe662006-09-24 21:24:46 +020064#include <linux/sysfs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#include <asm/io.h>
66
67
68/* If force_addr is set to anything different from 0, we forcibly enable
69 the device at the given address. */
70static u16 force_addr;
71module_param(force_addr, ushort, 0);
72MODULE_PARM_DESC(force_addr,
73 "Initialize the base address of the sensors");
74
Jean Delvare17e7dc42007-06-09 10:11:16 -040075static struct platform_device *pdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77/* Many SIS5595 constants specified below */
78
79/* Length of ISA address segment */
80#define SIS5595_EXTENT 8
81/* PCI Config Registers */
82#define SIS5595_REVISION_REG 0x08
83#define SIS5595_BASE_REG 0x68
84#define SIS5595_PIN_REG 0x7A
85#define SIS5595_ENABLE_REG 0x7B
86
87/* Where are the ISA address/data registers relative to the base address */
88#define SIS5595_ADDR_REG_OFFSET 5
89#define SIS5595_DATA_REG_OFFSET 6
90
91/* The SIS5595 registers */
92#define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
93#define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
94#define SIS5595_REG_IN(nr) (0x20 + (nr))
95
96#define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
97#define SIS5595_REG_FAN(nr) (0x28 + (nr))
98
99/* On the first version of the chip, the temp registers are separate.
100 On the second version,
101 TEMP pin is shared with IN4, configured in PCI register 0x7A.
102 The registers are the same as well.
103 OVER and HYST are really MAX and MIN. */
104
105#define REV2MIN 0xb0
106#define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \
107 SIS5595_REG_IN(4) : 0x27
108#define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \
109 SIS5595_REG_IN_MAX(4) : 0x39
110#define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \
111 SIS5595_REG_IN_MIN(4) : 0x3a
112
113#define SIS5595_REG_CONFIG 0x40
114#define SIS5595_REG_ALARM1 0x41
115#define SIS5595_REG_ALARM2 0x42
116#define SIS5595_REG_FANDIV 0x47
117
118/* Conversions. Limit checking is only done on the TO_REG
119 variants. */
120
121/* IN: mV, (0V to 4.08V)
122 REG: 16mV/bit */
123static inline u8 IN_TO_REG(unsigned long val)
124{
125 unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
126 return (nval + 8) / 16;
127}
128#define IN_FROM_REG(val) ((val) * 16)
129
130static inline u8 FAN_TO_REG(long rpm, int div)
131{
132 if (rpm <= 0)
133 return 255;
134 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
135}
136
137static inline int FAN_FROM_REG(u8 val, int div)
138{
139 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
140}
141
142/* TEMP: mC (-54.12C to +157.53C)
143 REG: 0.83C/bit + 52.12, two's complement */
144static inline int TEMP_FROM_REG(s8 val)
145{
146 return val * 830 + 52120;
147}
148static inline s8 TEMP_TO_REG(int val)
149{
150 int nval = SENSORS_LIMIT(val, -54120, 157530) ;
151 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
152}
153
154/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
155 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
156static inline u8 DIV_TO_REG(int val)
157{
158 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
159}
160#define DIV_FROM_REG(val) (1 << (val))
161
Jean Delvareed6bafb2007-02-14 21:15:03 +0100162/* For each registered chip, we need to keep some data in memory.
163 The structure is dynamically allocated. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164struct sis5595_data {
Jean Delvare17e7dc42007-06-09 10:11:16 -0400165 unsigned short addr;
166 const char *name;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400167 struct class_device *class_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100168 struct mutex lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100170 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 char valid; /* !=0 if following fields are valid */
172 unsigned long last_updated; /* In jiffies */
173 char maxins; /* == 3 if temp enabled, otherwise == 4 */
174 u8 revision; /* Reg. value */
175
176 u8 in[5]; /* Register value */
177 u8 in_max[5]; /* Register value */
178 u8 in_min[5]; /* Register value */
179 u8 fan[2]; /* Register value */
180 u8 fan_min[2]; /* Register value */
181 s8 temp; /* Register value */
182 s8 temp_over; /* Register value */
183 s8 temp_hyst; /* Register value */
184 u8 fan_div[2]; /* Register encoding, shifted right */
185 u16 alarms; /* Register encoding, combined */
186};
187
188static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
189
Jean Delvare17e7dc42007-06-09 10:11:16 -0400190static int sis5595_probe(struct platform_device *pdev);
191static int sis5595_remove(struct platform_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Jean Delvare17e7dc42007-06-09 10:11:16 -0400193static int sis5595_read_value(struct sis5595_data *data, u8 reg);
194static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195static struct sis5595_data *sis5595_update_device(struct device *dev);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400196static void sis5595_init_device(struct sis5595_data *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
Jean Delvare17e7dc42007-06-09 10:11:16 -0400198static struct platform_driver sis5595_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100199 .driver = {
Jean Delvare87218842006-09-03 22:36:14 +0200200 .owner = THIS_MODULE,
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100201 .name = "sis5595",
202 },
Jean Delvare17e7dc42007-06-09 10:11:16 -0400203 .probe = sis5595_probe,
204 .remove = __devexit_p(sis5595_remove),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205};
206
207/* 4 Voltages */
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400208static ssize_t show_in(struct device *dev, struct device_attribute *da,
209 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210{
211 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400212 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
213 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
215}
216
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400217static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
218 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
220 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400221 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
222 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
224}
225
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400226static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
227 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{
229 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400230 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
231 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
233}
234
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400235static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
236 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400238 struct sis5595_data *data = dev_get_drvdata(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400239 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
240 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 unsigned long val = simple_strtoul(buf, NULL, 10);
242
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100243 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 data->in_min[nr] = IN_TO_REG(val);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400245 sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100246 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 return count;
248}
249
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400250static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
251 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400253 struct sis5595_data *data = dev_get_drvdata(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400254 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
255 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 unsigned long val = simple_strtoul(buf, NULL, 10);
257
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100258 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 data->in_max[nr] = IN_TO_REG(val);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400260 sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100261 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 return count;
263}
264
265#define show_in_offset(offset) \
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400266static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
267 show_in, NULL, offset); \
268static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
269 show_in_min, set_in_min, offset); \
270static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
271 show_in_max, set_in_max, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
273show_in_offset(0);
274show_in_offset(1);
275show_in_offset(2);
276show_in_offset(3);
277show_in_offset(4);
278
279/* Temperature */
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400280static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281{
282 struct sis5595_data *data = sis5595_update_device(dev);
283 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
284}
285
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400286static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287{
288 struct sis5595_data *data = sis5595_update_device(dev);
289 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
290}
291
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400292static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400294 struct sis5595_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 long val = simple_strtol(buf, NULL, 10);
296
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100297 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 data->temp_over = TEMP_TO_REG(val);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400299 sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100300 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 return count;
302}
303
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400304static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305{
306 struct sis5595_data *data = sis5595_update_device(dev);
307 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
308}
309
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400310static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400312 struct sis5595_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 long val = simple_strtol(buf, NULL, 10);
314
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100315 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 data->temp_hyst = TEMP_TO_REG(val);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400317 sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100318 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 return count;
320}
321
322static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
323static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
324 show_temp_over, set_temp_over);
325static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
326 show_temp_hyst, set_temp_hyst);
327
328/* 2 Fans */
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400329static ssize_t show_fan(struct device *dev, struct device_attribute *da,
330 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331{
332 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400333 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
334 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
336 DIV_FROM_REG(data->fan_div[nr])) );
337}
338
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400339static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
340 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341{
342 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400343 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
344 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
346 DIV_FROM_REG(data->fan_div[nr])) );
347}
348
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400349static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
350 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400352 struct sis5595_data *data = dev_get_drvdata(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400353 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
354 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 unsigned long val = simple_strtoul(buf, NULL, 10);
356
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100357 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvare17e7dc42007-06-09 10:11:16 -0400359 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100360 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 return count;
362}
363
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400364static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
365 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366{
367 struct sis5595_data *data = sis5595_update_device(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400368 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
369 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
371}
372
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
Andreas Mohrd6e05ed2006-06-26 18:35:02 +0200375 least surprise; the user doesn't expect the fan minimum to change just
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 because the divisor changed. */
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400377static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
378 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400380 struct sis5595_data *data = dev_get_drvdata(dev);
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400381 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
382 int nr = attr->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 unsigned long min;
384 unsigned long val = simple_strtoul(buf, NULL, 10);
385 int reg;
386
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100387 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 min = FAN_FROM_REG(data->fan_min[nr],
389 DIV_FROM_REG(data->fan_div[nr]));
Jean Delvare17e7dc42007-06-09 10:11:16 -0400390 reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391
392 switch (val) {
393 case 1: data->fan_div[nr] = 0; break;
394 case 2: data->fan_div[nr] = 1; break;
395 case 4: data->fan_div[nr] = 2; break;
396 case 8: data->fan_div[nr] = 3; break;
397 default:
Jean Delvare17e7dc42007-06-09 10:11:16 -0400398 dev_err(dev, "fan_div value %ld not "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 "supported. Choose one of 1, 2, 4 or 8!\n", val);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100400 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 return -EINVAL;
402 }
403
404 switch (nr) {
405 case 0:
406 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
407 break;
408 case 1:
409 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
410 break;
411 }
Jean Delvare17e7dc42007-06-09 10:11:16 -0400412 sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 data->fan_min[nr] =
414 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvare17e7dc42007-06-09 10:11:16 -0400415 sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100416 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 return count;
418}
419
420#define show_fan_offset(offset) \
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400421static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
422 show_fan, NULL, offset - 1); \
423static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
424 show_fan_min, set_fan_min, offset - 1); \
425static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
426 show_fan_div, set_fan_div, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
428show_fan_offset(1);
429show_fan_offset(2);
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431/* Alarms */
Yani Ioannoua5099cf2005-05-17 06:42:25 -0400432static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433{
434 struct sis5595_data *data = sis5595_update_device(dev);
435 return sprintf(buf, "%d\n", data->alarms);
436}
437static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
Jean Delvarea5ebe662006-09-24 21:24:46 +0200438
Jean Delvare17e7dc42007-06-09 10:11:16 -0400439static ssize_t show_name(struct device *dev, struct device_attribute *attr,
440 char *buf)
441{
442 struct sis5595_data *data = dev_get_drvdata(dev);
443 return sprintf(buf, "%s\n", data->name);
444}
445static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
446
Jean Delvarea5ebe662006-09-24 21:24:46 +0200447static struct attribute *sis5595_attributes[] = {
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400448 &sensor_dev_attr_in0_input.dev_attr.attr,
449 &sensor_dev_attr_in0_min.dev_attr.attr,
450 &sensor_dev_attr_in0_max.dev_attr.attr,
451 &sensor_dev_attr_in1_input.dev_attr.attr,
452 &sensor_dev_attr_in1_min.dev_attr.attr,
453 &sensor_dev_attr_in1_max.dev_attr.attr,
454 &sensor_dev_attr_in2_input.dev_attr.attr,
455 &sensor_dev_attr_in2_min.dev_attr.attr,
456 &sensor_dev_attr_in2_max.dev_attr.attr,
457 &sensor_dev_attr_in3_input.dev_attr.attr,
458 &sensor_dev_attr_in3_min.dev_attr.attr,
459 &sensor_dev_attr_in3_max.dev_attr.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200460
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400461 &sensor_dev_attr_fan1_input.dev_attr.attr,
462 &sensor_dev_attr_fan1_min.dev_attr.attr,
463 &sensor_dev_attr_fan1_div.dev_attr.attr,
464 &sensor_dev_attr_fan2_input.dev_attr.attr,
465 &sensor_dev_attr_fan2_min.dev_attr.attr,
466 &sensor_dev_attr_fan2_div.dev_attr.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200467
468 &dev_attr_alarms.attr,
Jean Delvare17e7dc42007-06-09 10:11:16 -0400469 &dev_attr_name.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200470 NULL
471};
472
473static const struct attribute_group sis5595_group = {
474 .attrs = sis5595_attributes,
475};
476
477static struct attribute *sis5595_attributes_opt[] = {
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400478 &sensor_dev_attr_in4_input.dev_attr.attr,
479 &sensor_dev_attr_in4_min.dev_attr.attr,
480 &sensor_dev_attr_in4_max.dev_attr.attr,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200481
482 &dev_attr_temp1_input.attr,
483 &dev_attr_temp1_max.attr,
484 &dev_attr_temp1_max_hyst.attr,
485 NULL
486};
487
488static const struct attribute_group sis5595_group_opt = {
489 .attrs = sis5595_attributes_opt,
490};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
492/* This is called when the module is loaded */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400493static int __devinit sis5595_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494{
495 int err = 0;
496 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 struct sis5595_data *data;
Jean Delvare17e7dc42007-06-09 10:11:16 -0400498 struct resource *res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 char val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 /* Reserve the ISA region */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400502 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
503 if (!request_region(res->start, SIS5595_EXTENT,
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100504 sis5595_driver.driver.name)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 err = -EBUSY;
506 goto exit;
507 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508
Deepak Saxenaba9c2e82005-10-17 23:08:32 +0200509 if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 err = -ENOMEM;
511 goto exit_release;
512 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100514 mutex_init(&data->lock);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400515 mutex_init(&data->update_lock);
516 data->addr = res->start;
517 data->name = "sis5595";
518 platform_set_drvdata(pdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519
520 /* Check revision and pin registers to determine whether 4 or 5 voltages */
521 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
522 /* 4 voltages, 1 temp */
523 data->maxins = 3;
524 if (data->revision >= REV2MIN) {
525 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
526 if (!(val & 0x80))
527 /* 5 voltages, no temps */
528 data->maxins = 4;
529 }
530
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 /* Initialize the SIS5595 chip */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400532 sis5595_init_device(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
534 /* A few vars need to be filled upon startup */
535 for (i = 0; i < 2; i++) {
Jean Delvare17e7dc42007-06-09 10:11:16 -0400536 data->fan_min[i] = sis5595_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 SIS5595_REG_FAN_MIN(i));
538 }
539
540 /* Register sysfs hooks */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400541 if ((err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group)))
542 goto exit_free;
Jean Delvarea5ebe662006-09-24 21:24:46 +0200543 if (data->maxins == 4) {
Jean Delvare17e7dc42007-06-09 10:11:16 -0400544 if ((err = device_create_file(&pdev->dev,
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400545 &sensor_dev_attr_in4_input.dev_attr))
Jean Delvare17e7dc42007-06-09 10:11:16 -0400546 || (err = device_create_file(&pdev->dev,
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400547 &sensor_dev_attr_in4_min.dev_attr))
Jean Delvare17e7dc42007-06-09 10:11:16 -0400548 || (err = device_create_file(&pdev->dev,
Jean Delvare1f5f48d2007-06-09 10:11:16 -0400549 &sensor_dev_attr_in4_max.dev_attr)))
Jean Delvarea5ebe662006-09-24 21:24:46 +0200550 goto exit_remove_files;
551 } else {
Jean Delvare17e7dc42007-06-09 10:11:16 -0400552 if ((err = device_create_file(&pdev->dev,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200553 &dev_attr_temp1_input))
Jean Delvare17e7dc42007-06-09 10:11:16 -0400554 || (err = device_create_file(&pdev->dev,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200555 &dev_attr_temp1_max))
Jean Delvare17e7dc42007-06-09 10:11:16 -0400556 || (err = device_create_file(&pdev->dev,
Jean Delvarea5ebe662006-09-24 21:24:46 +0200557 &dev_attr_temp1_max_hyst)))
558 goto exit_remove_files;
559 }
560
Jean Delvare17e7dc42007-06-09 10:11:16 -0400561 data->class_dev = hwmon_device_register(&pdev->dev);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400562 if (IS_ERR(data->class_dev)) {
563 err = PTR_ERR(data->class_dev);
Jean Delvarea5ebe662006-09-24 21:24:46 +0200564 goto exit_remove_files;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400565 }
566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 return 0;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400568
Jean Delvarea5ebe662006-09-24 21:24:46 +0200569exit_remove_files:
Jean Delvare17e7dc42007-06-09 10:11:16 -0400570 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
571 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572exit_free:
573 kfree(data);
574exit_release:
Jean Delvare17e7dc42007-06-09 10:11:16 -0400575 release_region(res->start, SIS5595_EXTENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576exit:
577 return err;
578}
579
Jean Delvare17e7dc42007-06-09 10:11:16 -0400580static int __devexit sis5595_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400582 struct sis5595_data *data = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400584 hwmon_device_unregister(data->class_dev);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400585 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
586 sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400587
Jean Delvare17e7dc42007-06-09 10:11:16 -0400588 release_region(data->addr, SIS5595_EXTENT);
589 platform_set_drvdata(pdev, NULL);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400590 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591
592 return 0;
593}
594
595
596/* ISA access must be locked explicitly. */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400597static int sis5595_read_value(struct sis5595_data *data, u8 reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598{
599 int res;
600
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100601 mutex_lock(&data->lock);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400602 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
603 res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100604 mutex_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 return res;
606}
607
Jean Delvare17e7dc42007-06-09 10:11:16 -0400608static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609{
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100610 mutex_lock(&data->lock);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400611 outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
612 outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100613 mutex_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614}
615
616/* Called when we have found a new SIS5595. */
Jean Delvare17e7dc42007-06-09 10:11:16 -0400617static void __devinit sis5595_init_device(struct sis5595_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400619 u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 if (!(config & 0x01))
Jean Delvare17e7dc42007-06-09 10:11:16 -0400621 sis5595_write_value(data, SIS5595_REG_CONFIG,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 (config & 0xf7) | 0x01);
623}
624
625static struct sis5595_data *sis5595_update_device(struct device *dev)
626{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400627 struct sis5595_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 int i;
629
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100630 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631
632 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
633 || !data->valid) {
634
635 for (i = 0; i <= data->maxins; i++) {
636 data->in[i] =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400637 sis5595_read_value(data, SIS5595_REG_IN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 data->in_min[i] =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400639 sis5595_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 SIS5595_REG_IN_MIN(i));
641 data->in_max[i] =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400642 sis5595_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 SIS5595_REG_IN_MAX(i));
644 }
645 for (i = 0; i < 2; i++) {
646 data->fan[i] =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400647 sis5595_read_value(data, SIS5595_REG_FAN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 data->fan_min[i] =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400649 sis5595_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 SIS5595_REG_FAN_MIN(i));
651 }
652 if (data->maxins == 3) {
653 data->temp =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400654 sis5595_read_value(data, SIS5595_REG_TEMP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 data->temp_over =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400656 sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 data->temp_hyst =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400658 sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 }
Jean Delvare17e7dc42007-06-09 10:11:16 -0400660 i = sis5595_read_value(data, SIS5595_REG_FANDIV);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 data->fan_div[0] = (i >> 4) & 0x03;
662 data->fan_div[1] = i >> 6;
663 data->alarms =
Jean Delvare17e7dc42007-06-09 10:11:16 -0400664 sis5595_read_value(data, SIS5595_REG_ALARM1) |
665 (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 data->last_updated = jiffies;
667 data->valid = 1;
668 }
669
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100670 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
672 return data;
673}
674
675static struct pci_device_id sis5595_pci_ids[] = {
676 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
677 { 0, }
678};
679
680MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
681
682static int blacklist[] __devinitdata = {
683 PCI_DEVICE_ID_SI_540,
684 PCI_DEVICE_ID_SI_550,
685 PCI_DEVICE_ID_SI_630,
686 PCI_DEVICE_ID_SI_645,
687 PCI_DEVICE_ID_SI_730,
688 PCI_DEVICE_ID_SI_735,
689 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
690 that ID shows up in other chips so we
691 use the 5511 ID for recognition */
692 PCI_DEVICE_ID_SI_5597,
693 PCI_DEVICE_ID_SI_5598,
694 0 };
695
Jean Delvare17e7dc42007-06-09 10:11:16 -0400696static int __devinit sis5595_device_add(unsigned short address)
697{
698 struct resource res = {
699 .start = address,
700 .end = address + SIS5595_EXTENT - 1,
701 .name = "sis5595",
702 .flags = IORESOURCE_IO,
703 };
704 int err;
705
706 pdev = platform_device_alloc("sis5595", address);
707 if (!pdev) {
708 err = -ENOMEM;
709 printk(KERN_ERR "sis5595: Device allocation failed\n");
710 goto exit;
711 }
712
713 err = platform_device_add_resources(pdev, &res, 1);
714 if (err) {
715 printk(KERN_ERR "sis5595: Device resource addition failed "
716 "(%d)\n", err);
717 goto exit_device_put;
718 }
719
720 err = platform_device_add(pdev);
721 if (err) {
722 printk(KERN_ERR "sis5595: Device addition failed (%d)\n",
723 err);
724 goto exit_device_put;
725 }
726
727 return 0;
728
729exit_device_put:
730 platform_device_put(pdev);
731exit:
732 return err;
733}
734
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735static int __devinit sis5595_pci_probe(struct pci_dev *dev,
736 const struct pci_device_id *id)
737{
Jean Delvare17e7dc42007-06-09 10:11:16 -0400738 u16 address;
739 u8 enable;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 int *i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741
742 for (i = blacklist; *i != 0; i++) {
743 struct pci_dev *dev;
744 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
745 if (dev) {
746 dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i);
747 pci_dev_put(dev);
748 return -ENODEV;
749 }
750 }
751
Jean Delvare17e7dc42007-06-09 10:11:16 -0400752 force_addr &= ~(SIS5595_EXTENT - 1);
753 if (force_addr) {
754 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
755 pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
756 }
757
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 if (PCIBIOS_SUCCESSFUL !=
Jean Delvare17e7dc42007-06-09 10:11:16 -0400759 pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
760 dev_err(&dev->dev, "Failed to read ISA address\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 return -ENODEV;
Jean Delvare17e7dc42007-06-09 10:11:16 -0400762 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
Jean Delvare17e7dc42007-06-09 10:11:16 -0400764 address &= ~(SIS5595_EXTENT - 1);
765 if (!address) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
767 return -ENODEV;
768 }
Jean Delvare17e7dc42007-06-09 10:11:16 -0400769 if (force_addr && address != force_addr) {
770 /* doesn't work for some chips? */
771 dev_err(&dev->dev, "Failed to force ISA address\n");
772 return -ENODEV;
773 }
774
775 if (PCIBIOS_SUCCESSFUL !=
776 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
777 dev_err(&dev->dev, "Failed to read enable register\n");
778 return -ENODEV;
779 }
780 if (!(enable & 0x80)) {
781 if ((PCIBIOS_SUCCESSFUL !=
782 pci_write_config_byte(dev, SIS5595_ENABLE_REG,
783 enable | 0x80))
784 || (PCIBIOS_SUCCESSFUL !=
785 pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
786 || (!(enable & 0x80))) {
787 /* doesn't work for some chips! */
788 dev_err(&dev->dev, "Failed to enable HWM device\n");
789 return -ENODEV;
790 }
791 }
792
793 if (platform_driver_register(&sis5595_driver)) {
794 dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
795 goto exit;
796 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 s_bridge = pci_dev_get(dev);
Jean Delvare17e7dc42007-06-09 10:11:16 -0400799 /* Sets global pdev as a side effect */
800 if (sis5595_device_add(address))
801 goto exit_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802
803 /* Always return failure here. This is to allow other drivers to bind
804 * to this pci device. We don't really want to have control over the
805 * pci device, we only wanted to read as few register values from it.
806 */
807 return -ENODEV;
Jean Delvare17e7dc42007-06-09 10:11:16 -0400808
809exit_unregister:
810 pci_dev_put(dev);
811 platform_driver_unregister(&sis5595_driver);
812exit:
813 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814}
815
816static struct pci_driver sis5595_pci_driver = {
817 .name = "sis5595",
818 .id_table = sis5595_pci_ids,
819 .probe = sis5595_pci_probe,
820};
821
822static int __init sm_sis5595_init(void)
823{
824 return pci_register_driver(&sis5595_pci_driver);
825}
826
827static void __exit sm_sis5595_exit(void)
828{
829 pci_unregister_driver(&sis5595_pci_driver);
830 if (s_bridge != NULL) {
Jean Delvare17e7dc42007-06-09 10:11:16 -0400831 platform_device_unregister(pdev);
832 platform_driver_unregister(&sis5595_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 pci_dev_put(s_bridge);
834 s_bridge = NULL;
835 }
836}
837
838MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
839MODULE_DESCRIPTION("SiS 5595 Sensor device");
840MODULE_LICENSE("GPL");
841
842module_init(sm_sis5595_init);
843module_exit(sm_sis5595_exit);