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1da177e4 LT |
1 | /* |
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>, | |
96de0e25 | 6 | Kyösti Mälkki <kmalkki@cc.hut.fi>, and |
1da177e4 LT |
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> | |
17e7dc43 | 57 | #include <linux/platform_device.h> |
943b0830 | 58 | #include <linux/hwmon.h> |
1f5f48dd | 59 | #include <linux/hwmon-sysfs.h> |
943b0830 | 60 | #include <linux/err.h> |
1da177e4 | 61 | #include <linux/init.h> |
ff324094 | 62 | #include <linux/jiffies.h> |
9a61bf63 | 63 | #include <linux/mutex.h> |
a5ebe668 | 64 | #include <linux/sysfs.h> |
1da177e4 LT |
65 | #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. */ | |
70 | static u16 force_addr; | |
71 | module_param(force_addr, ushort, 0); | |
72 | MODULE_PARM_DESC(force_addr, | |
73 | "Initialize the base address of the sensors"); | |
74 | ||
17e7dc43 | 75 | static struct platform_device *pdev; |
1da177e4 LT |
76 | |
77 | /* Many SIS5595 constants specified below */ | |
78 | ||
79 | /* Length of ISA address segment */ | |
80 | #define SIS5595_EXTENT 8 | |
81 | /* PCI Config Registers */ | |
1da177e4 LT |
82 | #define SIS5595_BASE_REG 0x68 |
83 | #define SIS5595_PIN_REG 0x7A | |
84 | #define SIS5595_ENABLE_REG 0x7B | |
85 | ||
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 | |
89 | ||
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)) | |
94 | ||
95 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) | |
96 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) | |
97 | ||
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. */ | |
103 | ||
104 | #define REV2MIN 0xb0 | |
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 | |
111 | ||
112 | #define SIS5595_REG_CONFIG 0x40 | |
113 | #define SIS5595_REG_ALARM1 0x41 | |
114 | #define SIS5595_REG_ALARM2 0x42 | |
115 | #define SIS5595_REG_FANDIV 0x47 | |
116 | ||
117 | /* Conversions. Limit checking is only done on the TO_REG | |
118 | variants. */ | |
119 | ||
120 | /* IN: mV, (0V to 4.08V) | |
121 | REG: 16mV/bit */ | |
122 | static inline u8 IN_TO_REG(unsigned long val) | |
123 | { | |
124 | unsigned long nval = SENSORS_LIMIT(val, 0, 4080); | |
125 | return (nval + 8) / 16; | |
126 | } | |
127 | #define IN_FROM_REG(val) ((val) * 16) | |
128 | ||
129 | static inline u8 FAN_TO_REG(long rpm, int div) | |
130 | { | |
131 | if (rpm <= 0) | |
132 | return 255; | |
133 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
134 | } | |
135 | ||
136 | static inline int FAN_FROM_REG(u8 val, int div) | |
137 | { | |
138 | return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); | |
139 | } | |
140 | ||
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) | |
144 | { | |
145 | return val * 830 + 52120; | |
146 | } | |
147 | static inline s8 TEMP_TO_REG(int val) | |
148 | { | |
149 | int nval = SENSORS_LIMIT(val, -54120, 157530) ; | |
150 | return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830; | |
151 | } | |
152 | ||
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) | |
156 | { | |
157 | return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; | |
158 | } | |
159 | #define DIV_FROM_REG(val) (1 << (val)) | |
160 | ||
ed6bafbf JD |
161 | /* For each registered chip, we need to keep some data in memory. |
162 | The structure is dynamically allocated. */ | |
1da177e4 | 163 | struct sis5595_data { |
17e7dc43 JD |
164 | unsigned short addr; |
165 | const char *name; | |
1beeffe4 | 166 | struct device *hwmon_dev; |
9a61bf63 | 167 | struct mutex lock; |
1da177e4 | 168 | |
9a61bf63 | 169 | struct mutex update_lock; |
1da177e4 LT |
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 */ | |
174 | ||
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 */ | |
185 | }; | |
186 | ||
187 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ | |
188 | ||
17e7dc43 | 189 | static int sis5595_probe(struct platform_device *pdev); |
d0546128 | 190 | static int __devexit sis5595_remove(struct platform_device *pdev); |
1da177e4 | 191 | |
17e7dc43 JD |
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); | |
1da177e4 | 194 | static struct sis5595_data *sis5595_update_device(struct device *dev); |
17e7dc43 | 195 | static void sis5595_init_device(struct sis5595_data *data); |
1da177e4 | 196 | |
17e7dc43 | 197 | static struct platform_driver sis5595_driver = { |
cdaf7934 | 198 | .driver = { |
87218842 | 199 | .owner = THIS_MODULE, |
cdaf7934 LR |
200 | .name = "sis5595", |
201 | }, | |
17e7dc43 JD |
202 | .probe = sis5595_probe, |
203 | .remove = __devexit_p(sis5595_remove), | |
1da177e4 LT |
204 | }; |
205 | ||
206 | /* 4 Voltages */ | |
1f5f48dd JD |
207 | static ssize_t show_in(struct device *dev, struct device_attribute *da, |
208 | char *buf) | |
1da177e4 LT |
209 | { |
210 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
211 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
212 | int nr = attr->index; | |
1da177e4 LT |
213 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); |
214 | } | |
215 | ||
1f5f48dd JD |
216 | static ssize_t show_in_min(struct device *dev, struct device_attribute *da, |
217 | char *buf) | |
1da177e4 LT |
218 | { |
219 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
220 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
221 | int nr = attr->index; | |
1da177e4 LT |
222 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); |
223 | } | |
224 | ||
1f5f48dd JD |
225 | static ssize_t show_in_max(struct device *dev, struct device_attribute *da, |
226 | char *buf) | |
1da177e4 LT |
227 | { |
228 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
229 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
230 | int nr = attr->index; | |
1da177e4 LT |
231 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); |
232 | } | |
233 | ||
1f5f48dd JD |
234 | static ssize_t set_in_min(struct device *dev, struct device_attribute *da, |
235 | const char *buf, size_t count) | |
1da177e4 | 236 | { |
17e7dc43 | 237 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
238 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
239 | int nr = attr->index; | |
1da177e4 LT |
240 | unsigned long val = simple_strtoul(buf, NULL, 10); |
241 | ||
9a61bf63 | 242 | mutex_lock(&data->update_lock); |
1da177e4 | 243 | data->in_min[nr] = IN_TO_REG(val); |
17e7dc43 | 244 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); |
9a61bf63 | 245 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
246 | return count; |
247 | } | |
248 | ||
1f5f48dd JD |
249 | static ssize_t set_in_max(struct device *dev, struct device_attribute *da, |
250 | const char *buf, size_t count) | |
1da177e4 | 251 | { |
17e7dc43 | 252 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
253 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
254 | int nr = attr->index; | |
1da177e4 LT |
255 | unsigned long val = simple_strtoul(buf, NULL, 10); |
256 | ||
9a61bf63 | 257 | mutex_lock(&data->update_lock); |
1da177e4 | 258 | data->in_max[nr] = IN_TO_REG(val); |
17e7dc43 | 259 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); |
9a61bf63 | 260 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
261 | return count; |
262 | } | |
263 | ||
264 | #define show_in_offset(offset) \ | |
1f5f48dd JD |
265 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
266 | show_in, NULL, offset); \ | |
267 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
268 | show_in_min, set_in_min, offset); \ | |
269 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
270 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
271 | |
272 | show_in_offset(0); | |
273 | show_in_offset(1); | |
274 | show_in_offset(2); | |
275 | show_in_offset(3); | |
276 | show_in_offset(4); | |
277 | ||
278 | /* Temperature */ | |
a5099cfc | 279 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
280 | { |
281 | struct sis5595_data *data = sis5595_update_device(dev); | |
282 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); | |
283 | } | |
284 | ||
a5099cfc | 285 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
286 | { |
287 | struct sis5595_data *data = sis5595_update_device(dev); | |
288 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); | |
289 | } | |
290 | ||
a5099cfc | 291 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 292 | { |
17e7dc43 | 293 | struct sis5595_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
294 | long val = simple_strtol(buf, NULL, 10); |
295 | ||
9a61bf63 | 296 | mutex_lock(&data->update_lock); |
1da177e4 | 297 | data->temp_over = TEMP_TO_REG(val); |
17e7dc43 | 298 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); |
9a61bf63 | 299 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
300 | return count; |
301 | } | |
302 | ||
a5099cfc | 303 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
304 | { |
305 | struct sis5595_data *data = sis5595_update_device(dev); | |
306 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); | |
307 | } | |
308 | ||
a5099cfc | 309 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 310 | { |
17e7dc43 | 311 | struct sis5595_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
312 | long val = simple_strtol(buf, NULL, 10); |
313 | ||
9a61bf63 | 314 | mutex_lock(&data->update_lock); |
1da177e4 | 315 | data->temp_hyst = TEMP_TO_REG(val); |
17e7dc43 | 316 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); |
9a61bf63 | 317 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
318 | return count; |
319 | } | |
320 | ||
321 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); | |
322 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, | |
323 | show_temp_over, set_temp_over); | |
324 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
325 | show_temp_hyst, set_temp_hyst); | |
326 | ||
327 | /* 2 Fans */ | |
1f5f48dd JD |
328 | static ssize_t show_fan(struct device *dev, struct device_attribute *da, |
329 | char *buf) | |
1da177e4 LT |
330 | { |
331 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
332 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
333 | int nr = attr->index; | |
1da177e4 LT |
334 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
335 | DIV_FROM_REG(data->fan_div[nr])) ); | |
336 | } | |
337 | ||
1f5f48dd JD |
338 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, |
339 | char *buf) | |
1da177e4 LT |
340 | { |
341 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
342 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
343 | int nr = attr->index; | |
1da177e4 LT |
344 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], |
345 | DIV_FROM_REG(data->fan_div[nr])) ); | |
346 | } | |
347 | ||
1f5f48dd JD |
348 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, |
349 | const char *buf, size_t count) | |
1da177e4 | 350 | { |
17e7dc43 | 351 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
352 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
353 | int nr = attr->index; | |
1da177e4 LT |
354 | unsigned long val = simple_strtoul(buf, NULL, 10); |
355 | ||
9a61bf63 | 356 | mutex_lock(&data->update_lock); |
1da177e4 | 357 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
17e7dc43 | 358 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 359 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
360 | return count; |
361 | } | |
362 | ||
1f5f48dd JD |
363 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, |
364 | char *buf) | |
1da177e4 LT |
365 | { |
366 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
367 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
368 | int nr = attr->index; | |
1da177e4 LT |
369 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); |
370 | } | |
371 | ||
372 | /* Note: we save and restore the fan minimum here, because its value is | |
373 | determined in part by the fan divisor. This follows the principle of | |
d6e05edc | 374 | least surprise; the user doesn't expect the fan minimum to change just |
1da177e4 | 375 | because the divisor changed. */ |
1f5f48dd JD |
376 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, |
377 | const char *buf, size_t count) | |
1da177e4 | 378 | { |
17e7dc43 | 379 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
380 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
381 | int nr = attr->index; | |
1da177e4 LT |
382 | unsigned long min; |
383 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
384 | int reg; | |
385 | ||
9a61bf63 | 386 | mutex_lock(&data->update_lock); |
1da177e4 LT |
387 | min = FAN_FROM_REG(data->fan_min[nr], |
388 | DIV_FROM_REG(data->fan_div[nr])); | |
17e7dc43 | 389 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
1da177e4 LT |
390 | |
391 | switch (val) { | |
392 | case 1: data->fan_div[nr] = 0; break; | |
393 | case 2: data->fan_div[nr] = 1; break; | |
394 | case 4: data->fan_div[nr] = 2; break; | |
395 | case 8: data->fan_div[nr] = 3; break; | |
396 | default: | |
17e7dc43 | 397 | dev_err(dev, "fan_div value %ld not " |
1da177e4 | 398 | "supported. Choose one of 1, 2, 4 or 8!\n", val); |
9a61bf63 | 399 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
400 | return -EINVAL; |
401 | } | |
402 | ||
403 | switch (nr) { | |
404 | case 0: | |
405 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); | |
406 | break; | |
407 | case 1: | |
408 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); | |
409 | break; | |
410 | } | |
17e7dc43 | 411 | sis5595_write_value(data, SIS5595_REG_FANDIV, reg); |
1da177e4 LT |
412 | data->fan_min[nr] = |
413 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
17e7dc43 | 414 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 415 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
416 | return count; |
417 | } | |
418 | ||
419 | #define show_fan_offset(offset) \ | |
1f5f48dd JD |
420 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
421 | show_fan, NULL, offset - 1); \ | |
422 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
423 | show_fan_min, set_fan_min, offset - 1); \ | |
424 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
425 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
426 | |
427 | show_fan_offset(1); | |
428 | show_fan_offset(2); | |
429 | ||
1da177e4 | 430 | /* Alarms */ |
a5099cfc | 431 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
432 | { |
433 | struct sis5595_data *data = sis5595_update_device(dev); | |
434 | return sprintf(buf, "%d\n", data->alarms); | |
435 | } | |
436 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
a5ebe668 | 437 | |
17e7dc43 JD |
438 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, |
439 | char *buf) | |
440 | { | |
441 | struct sis5595_data *data = dev_get_drvdata(dev); | |
442 | return sprintf(buf, "%s\n", data->name); | |
443 | } | |
444 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
445 | ||
a5ebe668 | 446 | static struct attribute *sis5595_attributes[] = { |
1f5f48dd JD |
447 | &sensor_dev_attr_in0_input.dev_attr.attr, |
448 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
449 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
450 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
451 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
452 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
453 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
454 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
455 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
456 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
457 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
458 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
459 | ||
460 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
461 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
462 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
463 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
464 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
465 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
a5ebe668 JD |
466 | |
467 | &dev_attr_alarms.attr, | |
17e7dc43 | 468 | &dev_attr_name.attr, |
a5ebe668 JD |
469 | NULL |
470 | }; | |
471 | ||
472 | static const struct attribute_group sis5595_group = { | |
473 | .attrs = sis5595_attributes, | |
474 | }; | |
475 | ||
476 | static struct attribute *sis5595_attributes_opt[] = { | |
1f5f48dd JD |
477 | &sensor_dev_attr_in4_input.dev_attr.attr, |
478 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
479 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
a5ebe668 JD |
480 | |
481 | &dev_attr_temp1_input.attr, | |
482 | &dev_attr_temp1_max.attr, | |
483 | &dev_attr_temp1_max_hyst.attr, | |
484 | NULL | |
485 | }; | |
486 | ||
487 | static const struct attribute_group sis5595_group_opt = { | |
488 | .attrs = sis5595_attributes_opt, | |
489 | }; | |
1da177e4 LT |
490 | |
491 | /* This is called when the module is loaded */ | |
17e7dc43 | 492 | static int __devinit sis5595_probe(struct platform_device *pdev) |
1da177e4 LT |
493 | { |
494 | int err = 0; | |
495 | int i; | |
1da177e4 | 496 | struct sis5595_data *data; |
17e7dc43 | 497 | struct resource *res; |
1da177e4 | 498 | char val; |
1da177e4 | 499 | |
1da177e4 | 500 | /* Reserve the ISA region */ |
17e7dc43 JD |
501 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
502 | if (!request_region(res->start, SIS5595_EXTENT, | |
cdaf7934 | 503 | sis5595_driver.driver.name)) { |
1da177e4 LT |
504 | err = -EBUSY; |
505 | goto exit; | |
506 | } | |
1da177e4 | 507 | |
ba9c2e8d | 508 | if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { |
1da177e4 LT |
509 | err = -ENOMEM; |
510 | goto exit_release; | |
511 | } | |
1da177e4 | 512 | |
9a61bf63 | 513 | mutex_init(&data->lock); |
17e7dc43 JD |
514 | mutex_init(&data->update_lock); |
515 | data->addr = res->start; | |
516 | data->name = "sis5595"; | |
517 | platform_set_drvdata(pdev, data); | |
1da177e4 LT |
518 | |
519 | /* Check revision and pin registers to determine whether 4 or 5 voltages */ | |
7b6d1f04 | 520 | data->revision = s_bridge->revision; |
1da177e4 LT |
521 | /* 4 voltages, 1 temp */ |
522 | data->maxins = 3; | |
523 | if (data->revision >= REV2MIN) { | |
524 | pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); | |
525 | if (!(val & 0x80)) | |
526 | /* 5 voltages, no temps */ | |
527 | data->maxins = 4; | |
528 | } | |
529 | ||
1da177e4 | 530 | /* Initialize the SIS5595 chip */ |
17e7dc43 | 531 | sis5595_init_device(data); |
1da177e4 LT |
532 | |
533 | /* A few vars need to be filled upon startup */ | |
534 | for (i = 0; i < 2; i++) { | |
17e7dc43 | 535 | data->fan_min[i] = sis5595_read_value(data, |
1da177e4 LT |
536 | SIS5595_REG_FAN_MIN(i)); |
537 | } | |
538 | ||
539 | /* Register sysfs hooks */ | |
17e7dc43 JD |
540 | if ((err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group))) |
541 | goto exit_free; | |
a5ebe668 | 542 | if (data->maxins == 4) { |
17e7dc43 | 543 | if ((err = device_create_file(&pdev->dev, |
1f5f48dd | 544 | &sensor_dev_attr_in4_input.dev_attr)) |
17e7dc43 | 545 | || (err = device_create_file(&pdev->dev, |
1f5f48dd | 546 | &sensor_dev_attr_in4_min.dev_attr)) |
17e7dc43 | 547 | || (err = device_create_file(&pdev->dev, |
1f5f48dd | 548 | &sensor_dev_attr_in4_max.dev_attr))) |
a5ebe668 JD |
549 | goto exit_remove_files; |
550 | } else { | |
17e7dc43 | 551 | if ((err = device_create_file(&pdev->dev, |
a5ebe668 | 552 | &dev_attr_temp1_input)) |
17e7dc43 | 553 | || (err = device_create_file(&pdev->dev, |
a5ebe668 | 554 | &dev_attr_temp1_max)) |
17e7dc43 | 555 | || (err = device_create_file(&pdev->dev, |
a5ebe668 JD |
556 | &dev_attr_temp1_max_hyst))) |
557 | goto exit_remove_files; | |
558 | } | |
559 | ||
1beeffe4 TJ |
560 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
561 | if (IS_ERR(data->hwmon_dev)) { | |
562 | err = PTR_ERR(data->hwmon_dev); | |
a5ebe668 | 563 | goto exit_remove_files; |
943b0830 MH |
564 | } |
565 | ||
1da177e4 | 566 | return 0; |
943b0830 | 567 | |
a5ebe668 | 568 | exit_remove_files: |
17e7dc43 JD |
569 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
570 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt); | |
1da177e4 LT |
571 | exit_free: |
572 | kfree(data); | |
573 | exit_release: | |
17e7dc43 | 574 | release_region(res->start, SIS5595_EXTENT); |
1da177e4 LT |
575 | exit: |
576 | return err; | |
577 | } | |
578 | ||
17e7dc43 | 579 | static int __devexit sis5595_remove(struct platform_device *pdev) |
1da177e4 | 580 | { |
17e7dc43 | 581 | struct sis5595_data *data = platform_get_drvdata(pdev); |
1da177e4 | 582 | |
1beeffe4 | 583 | hwmon_device_unregister(data->hwmon_dev); |
17e7dc43 JD |
584 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
585 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt); | |
1da177e4 | 586 | |
17e7dc43 JD |
587 | release_region(data->addr, SIS5595_EXTENT); |
588 | platform_set_drvdata(pdev, NULL); | |
943b0830 | 589 | kfree(data); |
1da177e4 LT |
590 | |
591 | return 0; | |
592 | } | |
593 | ||
594 | ||
595 | /* ISA access must be locked explicitly. */ | |
17e7dc43 | 596 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) |
1da177e4 LT |
597 | { |
598 | int res; | |
599 | ||
9a61bf63 | 600 | mutex_lock(&data->lock); |
17e7dc43 JD |
601 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
602 | res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET); | |
9a61bf63 | 603 | mutex_unlock(&data->lock); |
1da177e4 LT |
604 | return res; |
605 | } | |
606 | ||
17e7dc43 | 607 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
1da177e4 | 608 | { |
9a61bf63 | 609 | mutex_lock(&data->lock); |
17e7dc43 JD |
610 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
611 | outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET); | |
9a61bf63 | 612 | mutex_unlock(&data->lock); |
1da177e4 LT |
613 | } |
614 | ||
615 | /* Called when we have found a new SIS5595. */ | |
17e7dc43 | 616 | static void __devinit sis5595_init_device(struct sis5595_data *data) |
1da177e4 | 617 | { |
17e7dc43 | 618 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); |
1da177e4 | 619 | if (!(config & 0x01)) |
17e7dc43 | 620 | sis5595_write_value(data, SIS5595_REG_CONFIG, |
1da177e4 LT |
621 | (config & 0xf7) | 0x01); |
622 | } | |
623 | ||
624 | static struct sis5595_data *sis5595_update_device(struct device *dev) | |
625 | { | |
17e7dc43 | 626 | struct sis5595_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
627 | int i; |
628 | ||
9a61bf63 | 629 | mutex_lock(&data->update_lock); |
1da177e4 LT |
630 | |
631 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
632 | || !data->valid) { | |
633 | ||
634 | for (i = 0; i <= data->maxins; i++) { | |
635 | data->in[i] = | |
17e7dc43 | 636 | sis5595_read_value(data, SIS5595_REG_IN(i)); |
1da177e4 | 637 | data->in_min[i] = |
17e7dc43 | 638 | sis5595_read_value(data, |
1da177e4 LT |
639 | SIS5595_REG_IN_MIN(i)); |
640 | data->in_max[i] = | |
17e7dc43 | 641 | sis5595_read_value(data, |
1da177e4 LT |
642 | SIS5595_REG_IN_MAX(i)); |
643 | } | |
644 | for (i = 0; i < 2; i++) { | |
645 | data->fan[i] = | |
17e7dc43 | 646 | sis5595_read_value(data, SIS5595_REG_FAN(i)); |
1da177e4 | 647 | data->fan_min[i] = |
17e7dc43 | 648 | sis5595_read_value(data, |
1da177e4 LT |
649 | SIS5595_REG_FAN_MIN(i)); |
650 | } | |
651 | if (data->maxins == 3) { | |
652 | data->temp = | |
17e7dc43 | 653 | sis5595_read_value(data, SIS5595_REG_TEMP); |
1da177e4 | 654 | data->temp_over = |
17e7dc43 | 655 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); |
1da177e4 | 656 | data->temp_hyst = |
17e7dc43 | 657 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); |
1da177e4 | 658 | } |
17e7dc43 | 659 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); |
1da177e4 LT |
660 | data->fan_div[0] = (i >> 4) & 0x03; |
661 | data->fan_div[1] = i >> 6; | |
662 | data->alarms = | |
17e7dc43 JD |
663 | sis5595_read_value(data, SIS5595_REG_ALARM1) | |
664 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); | |
1da177e4 LT |
665 | data->last_updated = jiffies; |
666 | data->valid = 1; | |
667 | } | |
668 | ||
9a61bf63 | 669 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
670 | |
671 | return data; | |
672 | } | |
673 | ||
674 | static struct pci_device_id sis5595_pci_ids[] = { | |
675 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, | |
676 | { 0, } | |
677 | }; | |
678 | ||
679 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); | |
680 | ||
681 | static int blacklist[] __devinitdata = { | |
682 | PCI_DEVICE_ID_SI_540, | |
683 | PCI_DEVICE_ID_SI_550, | |
684 | PCI_DEVICE_ID_SI_630, | |
685 | PCI_DEVICE_ID_SI_645, | |
686 | PCI_DEVICE_ID_SI_730, | |
687 | PCI_DEVICE_ID_SI_735, | |
688 | PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but | |
689 | that ID shows up in other chips so we | |
690 | use the 5511 ID for recognition */ | |
691 | PCI_DEVICE_ID_SI_5597, | |
692 | PCI_DEVICE_ID_SI_5598, | |
693 | 0 }; | |
694 | ||
17e7dc43 JD |
695 | static int __devinit sis5595_device_add(unsigned short address) |
696 | { | |
697 | struct resource res = { | |
698 | .start = address, | |
699 | .end = address + SIS5595_EXTENT - 1, | |
700 | .name = "sis5595", | |
701 | .flags = IORESOURCE_IO, | |
702 | }; | |
703 | int err; | |
704 | ||
705 | pdev = platform_device_alloc("sis5595", address); | |
706 | if (!pdev) { | |
707 | err = -ENOMEM; | |
708 | printk(KERN_ERR "sis5595: Device allocation failed\n"); | |
709 | goto exit; | |
710 | } | |
711 | ||
712 | err = platform_device_add_resources(pdev, &res, 1); | |
713 | if (err) { | |
714 | printk(KERN_ERR "sis5595: Device resource addition failed " | |
715 | "(%d)\n", err); | |
716 | goto exit_device_put; | |
717 | } | |
718 | ||
719 | err = platform_device_add(pdev); | |
720 | if (err) { | |
721 | printk(KERN_ERR "sis5595: Device addition failed (%d)\n", | |
722 | err); | |
723 | goto exit_device_put; | |
724 | } | |
725 | ||
726 | return 0; | |
727 | ||
728 | exit_device_put: | |
729 | platform_device_put(pdev); | |
730 | exit: | |
731 | return err; | |
732 | } | |
733 | ||
1da177e4 LT |
734 | static int __devinit sis5595_pci_probe(struct pci_dev *dev, |
735 | const struct pci_device_id *id) | |
736 | { | |
17e7dc43 JD |
737 | u16 address; |
738 | u8 enable; | |
1da177e4 | 739 | int *i; |
1da177e4 LT |
740 | |
741 | for (i = blacklist; *i != 0; i++) { | |
5460a9d0 MH |
742 | struct pci_dev *d; |
743 | if ((d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL))) { | |
744 | dev_err(&d->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); | |
745 | pci_dev_put(d); | |
1da177e4 LT |
746 | return -ENODEV; |
747 | } | |
748 | } | |
749 | ||
17e7dc43 JD |
750 | force_addr &= ~(SIS5595_EXTENT - 1); |
751 | if (force_addr) { | |
752 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr); | |
753 | pci_write_config_word(dev, SIS5595_BASE_REG, force_addr); | |
754 | } | |
755 | ||
1da177e4 | 756 | if (PCIBIOS_SUCCESSFUL != |
17e7dc43 JD |
757 | pci_read_config_word(dev, SIS5595_BASE_REG, &address)) { |
758 | dev_err(&dev->dev, "Failed to read ISA address\n"); | |
1da177e4 | 759 | return -ENODEV; |
17e7dc43 | 760 | } |
1da177e4 | 761 | |
17e7dc43 JD |
762 | address &= ~(SIS5595_EXTENT - 1); |
763 | if (!address) { | |
1da177e4 LT |
764 | dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
765 | return -ENODEV; | |
1da177e4 | 766 | } |
17e7dc43 JD |
767 | if (force_addr && address != force_addr) { |
768 | /* doesn't work for some chips? */ | |
769 | dev_err(&dev->dev, "Failed to force ISA address\n"); | |
770 | return -ENODEV; | |
771 | } | |
1da177e4 | 772 | |
17e7dc43 JD |
773 | if (PCIBIOS_SUCCESSFUL != |
774 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) { | |
775 | dev_err(&dev->dev, "Failed to read enable register\n"); | |
776 | return -ENODEV; | |
777 | } | |
778 | if (!(enable & 0x80)) { | |
779 | if ((PCIBIOS_SUCCESSFUL != | |
780 | pci_write_config_byte(dev, SIS5595_ENABLE_REG, | |
781 | enable | 0x80)) | |
782 | || (PCIBIOS_SUCCESSFUL != | |
783 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) | |
784 | || (!(enable & 0x80))) { | |
785 | /* doesn't work for some chips! */ | |
786 | dev_err(&dev->dev, "Failed to enable HWM device\n"); | |
787 | return -ENODEV; | |
788 | } | |
1da177e4 LT |
789 | } |
790 | ||
17e7dc43 JD |
791 | if (platform_driver_register(&sis5595_driver)) { |
792 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n"); | |
793 | goto exit; | |
794 | } | |
795 | ||
796 | s_bridge = pci_dev_get(dev); | |
797 | /* Sets global pdev as a side effect */ | |
798 | if (sis5595_device_add(address)) | |
799 | goto exit_unregister; | |
800 | ||
1da177e4 LT |
801 | /* Always return failure here. This is to allow other drivers to bind |
802 | * to this pci device. We don't really want to have control over the | |
803 | * pci device, we only wanted to read as few register values from it. | |
804 | */ | |
805 | return -ENODEV; | |
17e7dc43 JD |
806 | |
807 | exit_unregister: | |
808 | pci_dev_put(dev); | |
809 | platform_driver_unregister(&sis5595_driver); | |
810 | exit: | |
811 | return -ENODEV; | |
1da177e4 LT |
812 | } |
813 | ||
814 | static struct pci_driver sis5595_pci_driver = { | |
815 | .name = "sis5595", | |
816 | .id_table = sis5595_pci_ids, | |
817 | .probe = sis5595_pci_probe, | |
818 | }; | |
819 | ||
820 | static int __init sm_sis5595_init(void) | |
821 | { | |
822 | return pci_register_driver(&sis5595_pci_driver); | |
823 | } | |
824 | ||
825 | static void __exit sm_sis5595_exit(void) | |
826 | { | |
827 | pci_unregister_driver(&sis5595_pci_driver); | |
828 | if (s_bridge != NULL) { | |
17e7dc43 JD |
829 | platform_device_unregister(pdev); |
830 | platform_driver_unregister(&sis5595_driver); | |
1da177e4 LT |
831 | pci_dev_put(s_bridge); |
832 | s_bridge = NULL; | |
833 | } | |
834 | } | |
835 | ||
836 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); | |
837 | MODULE_DESCRIPTION("SiS 5595 Sensor device"); | |
838 | MODULE_LICENSE("GPL"); | |
839 | ||
840 | module_init(sm_sis5595_init); | |
841 | module_exit(sm_sis5595_exit); |