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1 | /* | |
2 | via686a.c - Part of lm_sensors, Linux kernel modules | |
3 | for hardware monitoring | |
4 | ||
5 | Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, | |
6 | Kyösti Mälkki <kmalkki@cc.hut.fi>, | |
7 | Mark Studebaker <mdsxyz123@yahoo.com>, | |
8 | and Bob Dougherty <bobd@stanford.edu> | |
9 | (Some conversion-factor data were contributed by Jonathan Teh Soon Yew | |
10 | <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.) | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | /* | |
28 | Supports the Via VT82C686A, VT82C686B south bridges. | |
29 | Reports all as a 686A. | |
30 | Warning - only supports a single device. | |
31 | */ | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/pci.h> | |
36 | #include <linux/jiffies.h> | |
37 | #include <linux/platform_device.h> | |
38 | #include <linux/hwmon.h> | |
39 | #include <linux/hwmon-sysfs.h> | |
40 | #include <linux/err.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/mutex.h> | |
43 | #include <linux/sysfs.h> | |
44 | #include <linux/acpi.h> | |
45 | #include <linux/io.h> | |
46 | ||
47 | ||
48 | /* If force_addr is set to anything different from 0, we forcibly enable | |
49 | the device at the given address. */ | |
50 | static unsigned short force_addr; | |
51 | module_param(force_addr, ushort, 0); | |
52 | MODULE_PARM_DESC(force_addr, | |
53 | "Initialize the base address of the sensors"); | |
54 | ||
55 | static struct platform_device *pdev; | |
56 | ||
57 | /* | |
58 | The Via 686a southbridge has a LM78-like chip integrated on the same IC. | |
59 | This driver is a customized copy of lm78.c | |
60 | */ | |
61 | ||
62 | /* Many VIA686A constants specified below */ | |
63 | ||
64 | /* Length of ISA address segment */ | |
65 | #define VIA686A_EXTENT 0x80 | |
66 | #define VIA686A_BASE_REG 0x70 | |
67 | #define VIA686A_ENABLE_REG 0x74 | |
68 | ||
69 | /* The VIA686A registers */ | |
70 | /* ins numbered 0-4 */ | |
71 | #define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2)) | |
72 | #define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2)) | |
73 | #define VIA686A_REG_IN(nr) (0x22 + (nr)) | |
74 | ||
75 | /* fans numbered 1-2 */ | |
76 | #define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr)) | |
77 | #define VIA686A_REG_FAN(nr) (0x28 + (nr)) | |
78 | ||
79 | /* temps numbered 1-3 */ | |
80 | static const u8 VIA686A_REG_TEMP[] = { 0x20, 0x21, 0x1f }; | |
81 | static const u8 VIA686A_REG_TEMP_OVER[] = { 0x39, 0x3d, 0x1d }; | |
82 | static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e }; | |
83 | /* bits 7-6 */ | |
84 | #define VIA686A_REG_TEMP_LOW1 0x4b | |
85 | /* 2 = bits 5-4, 3 = bits 7-6 */ | |
86 | #define VIA686A_REG_TEMP_LOW23 0x49 | |
87 | ||
88 | #define VIA686A_REG_ALARM1 0x41 | |
89 | #define VIA686A_REG_ALARM2 0x42 | |
90 | #define VIA686A_REG_FANDIV 0x47 | |
91 | #define VIA686A_REG_CONFIG 0x40 | |
92 | /* The following register sets temp interrupt mode (bits 1-0 for temp1, | |
93 | 3-2 for temp2, 5-4 for temp3). Modes are: | |
94 | 00 interrupt stays as long as value is out-of-range | |
95 | 01 interrupt is cleared once register is read (default) | |
96 | 10 comparator mode- like 00, but ignores hysteresis | |
97 | 11 same as 00 */ | |
98 | #define VIA686A_REG_TEMP_MODE 0x4b | |
99 | /* We'll just assume that you want to set all 3 simultaneously: */ | |
100 | #define VIA686A_TEMP_MODE_MASK 0x3F | |
101 | #define VIA686A_TEMP_MODE_CONTINUOUS 0x00 | |
102 | ||
103 | /* Conversions. Limit checking is only done on the TO_REG | |
104 | variants. | |
105 | ||
106 | ********* VOLTAGE CONVERSIONS (Bob Dougherty) ******** | |
107 | From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew): | |
108 | voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp | |
109 | voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V | |
110 | voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V | |
111 | voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V | |
112 | voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V | |
113 | in[i]=(data[i+2]*25.0+133)*voltagefactor[i]; | |
114 | That is: | |
115 | volts = (25*regVal+133)*factor | |
116 | regVal = (volts/factor-133)/25 | |
117 | (These conversions were contributed by Jonathan Teh Soon Yew | |
118 | <j.teh@iname.com>) */ | |
119 | static inline u8 IN_TO_REG(long val, int inNum) | |
120 | { | |
121 | /* To avoid floating point, we multiply constants by 10 (100 for +12V). | |
122 | Rounding is done (120500 is actually 133000 - 12500). | |
123 | Remember that val is expressed in 0.001V/bit, which is why we divide | |
124 | by an additional 10000 (100000 for +12V): 1000 for val and 10 (100) | |
125 | for the constants. */ | |
126 | if (inNum <= 1) | |
127 | return (u8) | |
128 | SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255); | |
129 | else if (inNum == 2) | |
130 | return (u8) | |
131 | SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255); | |
132 | else if (inNum == 3) | |
133 | return (u8) | |
134 | SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255); | |
135 | else | |
136 | return (u8) | |
137 | SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255); | |
138 | } | |
139 | ||
140 | static inline long IN_FROM_REG(u8 val, int inNum) | |
141 | { | |
142 | /* To avoid floating point, we multiply constants by 10 (100 for +12V). | |
143 | We also multiply them by 1000 because we want 0.001V/bit for the | |
144 | output value. Rounding is done. */ | |
145 | if (inNum <= 1) | |
146 | return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024); | |
147 | else if (inNum == 2) | |
148 | return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737); | |
149 | else if (inNum == 3) | |
150 | return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108); | |
151 | else | |
152 | return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714); | |
153 | } | |
154 | ||
155 | /********* FAN RPM CONVERSIONS ********/ | |
156 | /* Higher register values = slower fans (the fan's strobe gates a counter). | |
157 | But this chip saturates back at 0, not at 255 like all the other chips. | |
158 | So, 0 means 0 RPM */ | |
159 | static inline u8 FAN_TO_REG(long rpm, int div) | |
160 | { | |
161 | if (rpm == 0) | |
162 | return 0; | |
163 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
164 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255); | |
165 | } | |
166 | ||
167 | #define FAN_FROM_REG(val,div) ((val)==0?0:(val)==255?0:1350000/((val)*(div))) | |
168 | ||
169 | /******** TEMP CONVERSIONS (Bob Dougherty) *********/ | |
170 | /* linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew) | |
171 | if(temp<169) | |
172 | return double(temp)*0.427-32.08; | |
173 | else if(temp>=169 && temp<=202) | |
174 | return double(temp)*0.582-58.16; | |
175 | else | |
176 | return double(temp)*0.924-127.33; | |
177 | ||
178 | A fifth-order polynomial fits the unofficial data (provided by Alex van | |
179 | Kaam <darkside@chello.nl>) a bit better. It also give more reasonable | |
180 | numbers on my machine (ie. they agree with what my BIOS tells me). | |
181 | Here's the fifth-order fit to the 8-bit data: | |
182 | temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 - | |
183 | 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0. | |
184 | ||
185 | (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for | |
186 | finding my typos in this formula!) | |
187 | ||
188 | Alas, none of the elegant function-fit solutions will work because we | |
189 | aren't allowed to use floating point in the kernel and doing it with | |
190 | integers doesn't provide enough precision. So we'll do boring old | |
191 | look-up table stuff. The unofficial data (see below) have effectively | |
192 | 7-bit resolution (they are rounded to the nearest degree). I'm assuming | |
193 | that the transfer function of the device is monotonic and smooth, so a | |
194 | smooth function fit to the data will allow us to get better precision. | |
195 | I used the 5th-order poly fit described above and solved for | |
196 | VIA register values 0-255. I *10 before rounding, so we get tenth-degree | |
197 | precision. (I could have done all 1024 values for our 10-bit readings, | |
198 | but the function is very linear in the useful range (0-80 deg C), so | |
199 | we'll just use linear interpolation for 10-bit readings.) So, tempLUT | |
200 | is the temp at via register values 0-255: */ | |
201 | static const s16 tempLUT[] = | |
202 | { -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519, | |
203 | -503, -487, -471, -456, -442, -428, -414, -400, -387, -375, | |
204 | -362, -350, -339, -327, -316, -305, -295, -285, -275, -265, | |
205 | -255, -246, -237, -229, -220, -212, -204, -196, -188, -180, | |
206 | -173, -166, -159, -152, -145, -139, -132, -126, -120, -114, | |
207 | -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49, | |
208 | -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16, | |
209 | 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84, | |
210 | 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138, | |
211 | 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189, | |
212 | 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241, | |
213 | 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294, | |
214 | 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348, | |
215 | 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404, | |
216 | 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464, | |
217 | 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532, | |
218 | 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614, | |
219 | 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718, | |
220 | 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856, | |
221 | 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044, | |
222 | 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252, | |
223 | 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462 | |
224 | }; | |
225 | ||
226 | /* the original LUT values from Alex van Kaam <darkside@chello.nl> | |
227 | (for via register values 12-240): | |
228 | {-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31, | |
229 | -30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15, | |
230 | -15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3, | |
231 | -3,-2,-2,-1,-1,0,0,1,1,1,3,3,3,4,4,4,5,5,5,6,6,7,7,8,8,9,9,9,10,10,11,11,12, | |
232 | 12,12,13,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,21,21,21,22,22, | |
233 | 22,23,23,24,24,25,25,26,26,26,27,27,27,28,28,29,29,30,30,30,31,31,32,32,33, | |
234 | 33,34,34,35,35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,45, | |
235 | 45,46,46,47,48,48,49,49,50,51,51,52,52,53,53,54,55,55,56,57,57,58,59,59,60, | |
236 | 61,62,62,63,64,65,66,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83,84, | |
237 | 85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110}; | |
238 | ||
239 | ||
240 | Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed | |
241 | an extra term for a good fit to these inverse data!) and then | |
242 | solving for each temp value from -50 to 110 (the useable range for | |
243 | this chip). Here's the fit: | |
244 | viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4 | |
245 | - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01) | |
246 | Note that n=161: */ | |
247 | static const u8 viaLUT[] = | |
248 | { 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23, | |
249 | 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, | |
250 | 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, | |
251 | 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100, | |
252 | 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129, | |
253 | 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156, | |
254 | 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, | |
255 | 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199, | |
256 | 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213, | |
257 | 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224, | |
258 | 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232, | |
259 | 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239, | |
260 | 239, 240 | |
261 | }; | |
262 | ||
263 | /* Converting temps to (8-bit) hyst and over registers | |
264 | No interpolation here. | |
265 | The +50 is because the temps start at -50 */ | |
266 | static inline u8 TEMP_TO_REG(long val) | |
267 | { | |
268 | return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 : | |
269 | (val < 0 ? val - 500 : val + 500) / 1000 + 50]; | |
270 | } | |
271 | ||
272 | /* for 8-bit temperature hyst and over registers */ | |
273 | #define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100) | |
274 | ||
275 | /* for 10-bit temperature readings */ | |
276 | static inline long TEMP_FROM_REG10(u16 val) | |
277 | { | |
278 | u16 eightBits = val >> 2; | |
279 | u16 twoBits = val & 3; | |
280 | ||
281 | /* no interpolation for these */ | |
282 | if (twoBits == 0 || eightBits == 255) | |
283 | return TEMP_FROM_REG(eightBits); | |
284 | ||
285 | /* do some linear interpolation */ | |
286 | return (tempLUT[eightBits] * (4 - twoBits) + | |
287 | tempLUT[eightBits + 1] * twoBits) * 25; | |
288 | } | |
289 | ||
290 | #define DIV_FROM_REG(val) (1 << (val)) | |
291 | #define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1) | |
292 | ||
293 | /* For each registered chip, we need to keep some data in memory. | |
294 | The structure is dynamically allocated. */ | |
295 | struct via686a_data { | |
296 | unsigned short addr; | |
297 | const char *name; | |
298 | struct device *hwmon_dev; | |
299 | struct mutex update_lock; | |
300 | char valid; /* !=0 if following fields are valid */ | |
301 | unsigned long last_updated; /* In jiffies */ | |
302 | ||
303 | u8 in[5]; /* Register value */ | |
304 | u8 in_max[5]; /* Register value */ | |
305 | u8 in_min[5]; /* Register value */ | |
306 | u8 fan[2]; /* Register value */ | |
307 | u8 fan_min[2]; /* Register value */ | |
308 | u16 temp[3]; /* Register value 10 bit */ | |
309 | u8 temp_over[3]; /* Register value */ | |
310 | u8 temp_hyst[3]; /* Register value */ | |
311 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
312 | u16 alarms; /* Register encoding, combined */ | |
313 | }; | |
314 | ||
315 | static struct pci_dev *s_bridge; /* pointer to the (only) via686a */ | |
316 | ||
317 | static int via686a_probe(struct platform_device *pdev); | |
318 | static int __devexit via686a_remove(struct platform_device *pdev); | |
319 | ||
320 | static inline int via686a_read_value(struct via686a_data *data, u8 reg) | |
321 | { | |
322 | return inb_p(data->addr + reg); | |
323 | } | |
324 | ||
325 | static inline void via686a_write_value(struct via686a_data *data, u8 reg, | |
326 | u8 value) | |
327 | { | |
328 | outb_p(value, data->addr + reg); | |
329 | } | |
330 | ||
331 | static struct via686a_data *via686a_update_device(struct device *dev); | |
332 | static void via686a_init_device(struct via686a_data *data); | |
333 | ||
334 | /* following are the sysfs callback functions */ | |
335 | ||
336 | /* 7 voltage sensors */ | |
337 | static ssize_t show_in(struct device *dev, struct device_attribute *da, | |
338 | char *buf) { | |
339 | struct via686a_data *data = via686a_update_device(dev); | |
340 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
341 | int nr = attr->index; | |
342 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in[nr], nr)); | |
343 | } | |
344 | ||
345 | static ssize_t show_in_min(struct device *dev, struct device_attribute *da, | |
346 | char *buf) { | |
347 | struct via686a_data *data = via686a_update_device(dev); | |
348 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
349 | int nr = attr->index; | |
350 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_min[nr], nr)); | |
351 | } | |
352 | ||
353 | static ssize_t show_in_max(struct device *dev, struct device_attribute *da, | |
354 | char *buf) { | |
355 | struct via686a_data *data = via686a_update_device(dev); | |
356 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
357 | int nr = attr->index; | |
358 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr)); | |
359 | } | |
360 | ||
361 | static ssize_t set_in_min(struct device *dev, struct device_attribute *da, | |
362 | const char *buf, size_t count) { | |
363 | struct via686a_data *data = dev_get_drvdata(dev); | |
364 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
365 | int nr = attr->index; | |
366 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
367 | ||
368 | mutex_lock(&data->update_lock); | |
369 | data->in_min[nr] = IN_TO_REG(val, nr); | |
370 | via686a_write_value(data, VIA686A_REG_IN_MIN(nr), | |
371 | data->in_min[nr]); | |
372 | mutex_unlock(&data->update_lock); | |
373 | return count; | |
374 | } | |
375 | static ssize_t set_in_max(struct device *dev, struct device_attribute *da, | |
376 | const char *buf, size_t count) { | |
377 | struct via686a_data *data = dev_get_drvdata(dev); | |
378 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
379 | int nr = attr->index; | |
380 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
381 | ||
382 | mutex_lock(&data->update_lock); | |
383 | data->in_max[nr] = IN_TO_REG(val, nr); | |
384 | via686a_write_value(data, VIA686A_REG_IN_MAX(nr), | |
385 | data->in_max[nr]); | |
386 | mutex_unlock(&data->update_lock); | |
387 | return count; | |
388 | } | |
389 | #define show_in_offset(offset) \ | |
390 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
391 | show_in, NULL, offset); \ | |
392 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
393 | show_in_min, set_in_min, offset); \ | |
394 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
395 | show_in_max, set_in_max, offset); | |
396 | ||
397 | show_in_offset(0); | |
398 | show_in_offset(1); | |
399 | show_in_offset(2); | |
400 | show_in_offset(3); | |
401 | show_in_offset(4); | |
402 | ||
403 | /* 3 temperatures */ | |
404 | static ssize_t show_temp(struct device *dev, struct device_attribute *da, | |
405 | char *buf) { | |
406 | struct via686a_data *data = via686a_update_device(dev); | |
407 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
408 | int nr = attr->index; | |
409 | return sprintf(buf, "%ld\n", TEMP_FROM_REG10(data->temp[nr])); | |
410 | } | |
411 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *da, | |
412 | char *buf) { | |
413 | struct via686a_data *data = via686a_update_device(dev); | |
414 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
415 | int nr = attr->index; | |
416 | return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_over[nr])); | |
417 | } | |
418 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *da, | |
419 | char *buf) { | |
420 | struct via686a_data *data = via686a_update_device(dev); | |
421 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
422 | int nr = attr->index; | |
423 | return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr])); | |
424 | } | |
425 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *da, | |
426 | const char *buf, size_t count) { | |
427 | struct via686a_data *data = dev_get_drvdata(dev); | |
428 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
429 | int nr = attr->index; | |
430 | int val = simple_strtol(buf, NULL, 10); | |
431 | ||
432 | mutex_lock(&data->update_lock); | |
433 | data->temp_over[nr] = TEMP_TO_REG(val); | |
434 | via686a_write_value(data, VIA686A_REG_TEMP_OVER[nr], | |
435 | data->temp_over[nr]); | |
436 | mutex_unlock(&data->update_lock); | |
437 | return count; | |
438 | } | |
439 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da, | |
440 | const char *buf, size_t count) { | |
441 | struct via686a_data *data = dev_get_drvdata(dev); | |
442 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
443 | int nr = attr->index; | |
444 | int val = simple_strtol(buf, NULL, 10); | |
445 | ||
446 | mutex_lock(&data->update_lock); | |
447 | data->temp_hyst[nr] = TEMP_TO_REG(val); | |
448 | via686a_write_value(data, VIA686A_REG_TEMP_HYST[nr], | |
449 | data->temp_hyst[nr]); | |
450 | mutex_unlock(&data->update_lock); | |
451 | return count; | |
452 | } | |
453 | #define show_temp_offset(offset) \ | |
454 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
455 | show_temp, NULL, offset - 1); \ | |
456 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
457 | show_temp_over, set_temp_over, offset - 1); \ | |
458 | static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ | |
459 | show_temp_hyst, set_temp_hyst, offset - 1); | |
460 | ||
461 | show_temp_offset(1); | |
462 | show_temp_offset(2); | |
463 | show_temp_offset(3); | |
464 | ||
465 | /* 2 Fans */ | |
466 | static ssize_t show_fan(struct device *dev, struct device_attribute *da, | |
467 | char *buf) { | |
468 | struct via686a_data *data = via686a_update_device(dev); | |
469 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
470 | int nr = attr->index; | |
471 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
472 | DIV_FROM_REG(data->fan_div[nr])) ); | |
473 | } | |
474 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, | |
475 | char *buf) { | |
476 | struct via686a_data *data = via686a_update_device(dev); | |
477 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
478 | int nr = attr->index; | |
479 | return sprintf(buf, "%d\n", | |
480 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) ); | |
481 | } | |
482 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, | |
483 | char *buf) { | |
484 | struct via686a_data *data = via686a_update_device(dev); | |
485 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
486 | int nr = attr->index; | |
487 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); | |
488 | } | |
489 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, | |
490 | const char *buf, size_t count) { | |
491 | struct via686a_data *data = dev_get_drvdata(dev); | |
492 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
493 | int nr = attr->index; | |
494 | int val = simple_strtol(buf, NULL, 10); | |
495 | ||
496 | mutex_lock(&data->update_lock); | |
497 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); | |
498 | via686a_write_value(data, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]); | |
499 | mutex_unlock(&data->update_lock); | |
500 | return count; | |
501 | } | |
502 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, | |
503 | const char *buf, size_t count) { | |
504 | struct via686a_data *data = dev_get_drvdata(dev); | |
505 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); | |
506 | int nr = attr->index; | |
507 | int val = simple_strtol(buf, NULL, 10); | |
508 | int old; | |
509 | ||
510 | mutex_lock(&data->update_lock); | |
511 | old = via686a_read_value(data, VIA686A_REG_FANDIV); | |
512 | data->fan_div[nr] = DIV_TO_REG(val); | |
513 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); | |
514 | via686a_write_value(data, VIA686A_REG_FANDIV, old); | |
515 | mutex_unlock(&data->update_lock); | |
516 | return count; | |
517 | } | |
518 | ||
519 | #define show_fan_offset(offset) \ | |
520 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
521 | show_fan, NULL, offset - 1); \ | |
522 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
523 | show_fan_min, set_fan_min, offset - 1); \ | |
524 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
525 | show_fan_div, set_fan_div, offset - 1); | |
526 | ||
527 | show_fan_offset(1); | |
528 | show_fan_offset(2); | |
529 | ||
530 | /* Alarms */ | |
531 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) { | |
532 | struct via686a_data *data = via686a_update_device(dev); | |
533 | return sprintf(buf, "%u\n", data->alarms); | |
534 | } | |
535 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
536 | ||
537 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, | |
538 | char *buf) | |
539 | { | |
540 | int bitnr = to_sensor_dev_attr(attr)->index; | |
541 | struct via686a_data *data = via686a_update_device(dev); | |
542 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
543 | } | |
544 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
545 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
546 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
547 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
548 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
549 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
550 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); | |
551 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 15); | |
552 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
553 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
554 | ||
555 | static ssize_t show_name(struct device *dev, struct device_attribute | |
556 | *devattr, char *buf) | |
557 | { | |
558 | struct via686a_data *data = dev_get_drvdata(dev); | |
559 | return sprintf(buf, "%s\n", data->name); | |
560 | } | |
561 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
562 | ||
563 | static struct attribute *via686a_attributes[] = { | |
564 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
565 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
566 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
567 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
568 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
569 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
570 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
571 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
572 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
573 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
574 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
575 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
576 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
577 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
578 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
579 | &sensor_dev_attr_in0_alarm.dev_attr.attr, | |
580 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
581 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
582 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
583 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
584 | ||
585 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
586 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
587 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
588 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
589 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
590 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
591 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
592 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
593 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
594 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
595 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
596 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
597 | ||
598 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
599 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
600 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
601 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
602 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
603 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
604 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
605 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
606 | ||
607 | &dev_attr_alarms.attr, | |
608 | &dev_attr_name.attr, | |
609 | NULL | |
610 | }; | |
611 | ||
612 | static const struct attribute_group via686a_group = { | |
613 | .attrs = via686a_attributes, | |
614 | }; | |
615 | ||
616 | static struct platform_driver via686a_driver = { | |
617 | .driver = { | |
618 | .owner = THIS_MODULE, | |
619 | .name = "via686a", | |
620 | }, | |
621 | .probe = via686a_probe, | |
622 | .remove = __devexit_p(via686a_remove), | |
623 | }; | |
624 | ||
625 | ||
626 | /* This is called when the module is loaded */ | |
627 | static int __devinit via686a_probe(struct platform_device *pdev) | |
628 | { | |
629 | struct via686a_data *data; | |
630 | struct resource *res; | |
631 | int err; | |
632 | ||
633 | /* Reserve the ISA region */ | |
634 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
635 | if (!request_region(res->start, VIA686A_EXTENT, | |
636 | via686a_driver.driver.name)) { | |
637 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", | |
638 | (unsigned long)res->start, (unsigned long)res->end); | |
639 | return -ENODEV; | |
640 | } | |
641 | ||
642 | if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) { | |
643 | err = -ENOMEM; | |
644 | goto exit_release; | |
645 | } | |
646 | ||
647 | platform_set_drvdata(pdev, data); | |
648 | data->addr = res->start; | |
649 | data->name = "via686a"; | |
650 | mutex_init(&data->update_lock); | |
651 | ||
652 | /* Initialize the VIA686A chip */ | |
653 | via686a_init_device(data); | |
654 | ||
655 | /* Register sysfs hooks */ | |
656 | if ((err = sysfs_create_group(&pdev->dev.kobj, &via686a_group))) | |
657 | goto exit_free; | |
658 | ||
659 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
660 | if (IS_ERR(data->hwmon_dev)) { | |
661 | err = PTR_ERR(data->hwmon_dev); | |
662 | goto exit_remove_files; | |
663 | } | |
664 | ||
665 | return 0; | |
666 | ||
667 | exit_remove_files: | |
668 | sysfs_remove_group(&pdev->dev.kobj, &via686a_group); | |
669 | exit_free: | |
670 | kfree(data); | |
671 | exit_release: | |
672 | release_region(res->start, VIA686A_EXTENT); | |
673 | return err; | |
674 | } | |
675 | ||
676 | static int __devexit via686a_remove(struct platform_device *pdev) | |
677 | { | |
678 | struct via686a_data *data = platform_get_drvdata(pdev); | |
679 | ||
680 | hwmon_device_unregister(data->hwmon_dev); | |
681 | sysfs_remove_group(&pdev->dev.kobj, &via686a_group); | |
682 | ||
683 | release_region(data->addr, VIA686A_EXTENT); | |
684 | platform_set_drvdata(pdev, NULL); | |
685 | kfree(data); | |
686 | ||
687 | return 0; | |
688 | } | |
689 | ||
690 | static void __devinit via686a_init_device(struct via686a_data *data) | |
691 | { | |
692 | u8 reg; | |
693 | ||
694 | /* Start monitoring */ | |
695 | reg = via686a_read_value(data, VIA686A_REG_CONFIG); | |
696 | via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F); | |
697 | ||
698 | /* Configure temp interrupt mode for continuous-interrupt operation */ | |
699 | reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE); | |
700 | via686a_write_value(data, VIA686A_REG_TEMP_MODE, | |
701 | (reg & ~VIA686A_TEMP_MODE_MASK) | |
702 | | VIA686A_TEMP_MODE_CONTINUOUS); | |
703 | } | |
704 | ||
705 | static struct via686a_data *via686a_update_device(struct device *dev) | |
706 | { | |
707 | struct via686a_data *data = dev_get_drvdata(dev); | |
708 | int i; | |
709 | ||
710 | mutex_lock(&data->update_lock); | |
711 | ||
712 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
713 | || !data->valid) { | |
714 | for (i = 0; i <= 4; i++) { | |
715 | data->in[i] = | |
716 | via686a_read_value(data, VIA686A_REG_IN(i)); | |
717 | data->in_min[i] = via686a_read_value(data, | |
718 | VIA686A_REG_IN_MIN | |
719 | (i)); | |
720 | data->in_max[i] = | |
721 | via686a_read_value(data, VIA686A_REG_IN_MAX(i)); | |
722 | } | |
723 | for (i = 1; i <= 2; i++) { | |
724 | data->fan[i - 1] = | |
725 | via686a_read_value(data, VIA686A_REG_FAN(i)); | |
726 | data->fan_min[i - 1] = via686a_read_value(data, | |
727 | VIA686A_REG_FAN_MIN(i)); | |
728 | } | |
729 | for (i = 0; i <= 2; i++) { | |
730 | data->temp[i] = via686a_read_value(data, | |
731 | VIA686A_REG_TEMP[i]) << 2; | |
732 | data->temp_over[i] = | |
733 | via686a_read_value(data, | |
734 | VIA686A_REG_TEMP_OVER[i]); | |
735 | data->temp_hyst[i] = | |
736 | via686a_read_value(data, | |
737 | VIA686A_REG_TEMP_HYST[i]); | |
738 | } | |
739 | /* add in lower 2 bits | |
740 | temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 | |
741 | temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 | |
742 | temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 | |
743 | */ | |
744 | data->temp[0] |= (via686a_read_value(data, | |
745 | VIA686A_REG_TEMP_LOW1) | |
746 | & 0xc0) >> 6; | |
747 | data->temp[1] |= | |
748 | (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & | |
749 | 0x30) >> 4; | |
750 | data->temp[2] |= | |
751 | (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & | |
752 | 0xc0) >> 6; | |
753 | ||
754 | i = via686a_read_value(data, VIA686A_REG_FANDIV); | |
755 | data->fan_div[0] = (i >> 4) & 0x03; | |
756 | data->fan_div[1] = i >> 6; | |
757 | data->alarms = | |
758 | via686a_read_value(data, | |
759 | VIA686A_REG_ALARM1) | | |
760 | (via686a_read_value(data, VIA686A_REG_ALARM2) << 8); | |
761 | data->last_updated = jiffies; | |
762 | data->valid = 1; | |
763 | } | |
764 | ||
765 | mutex_unlock(&data->update_lock); | |
766 | ||
767 | return data; | |
768 | } | |
769 | ||
770 | static const struct pci_device_id via686a_pci_ids[] = { | |
771 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, | |
772 | { 0, } | |
773 | }; | |
774 | ||
775 | MODULE_DEVICE_TABLE(pci, via686a_pci_ids); | |
776 | ||
777 | static int __devinit via686a_device_add(unsigned short address) | |
778 | { | |
779 | struct resource res = { | |
780 | .start = address, | |
781 | .end = address + VIA686A_EXTENT - 1, | |
782 | .name = "via686a", | |
783 | .flags = IORESOURCE_IO, | |
784 | }; | |
785 | int err; | |
786 | ||
787 | err = acpi_check_resource_conflict(&res); | |
788 | if (err) | |
789 | goto exit; | |
790 | ||
791 | pdev = platform_device_alloc("via686a", address); | |
792 | if (!pdev) { | |
793 | err = -ENOMEM; | |
794 | printk(KERN_ERR "via686a: Device allocation failed\n"); | |
795 | goto exit; | |
796 | } | |
797 | ||
798 | err = platform_device_add_resources(pdev, &res, 1); | |
799 | if (err) { | |
800 | printk(KERN_ERR "via686a: Device resource addition failed " | |
801 | "(%d)\n", err); | |
802 | goto exit_device_put; | |
803 | } | |
804 | ||
805 | err = platform_device_add(pdev); | |
806 | if (err) { | |
807 | printk(KERN_ERR "via686a: Device addition failed (%d)\n", | |
808 | err); | |
809 | goto exit_device_put; | |
810 | } | |
811 | ||
812 | return 0; | |
813 | ||
814 | exit_device_put: | |
815 | platform_device_put(pdev); | |
816 | exit: | |
817 | return err; | |
818 | } | |
819 | ||
820 | static int __devinit via686a_pci_probe(struct pci_dev *dev, | |
821 | const struct pci_device_id *id) | |
822 | { | |
823 | u16 address, val; | |
824 | ||
825 | if (force_addr) { | |
826 | address = force_addr & ~(VIA686A_EXTENT - 1); | |
827 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", address); | |
828 | if (PCIBIOS_SUCCESSFUL != | |
829 | pci_write_config_word(dev, VIA686A_BASE_REG, address | 1)) | |
830 | return -ENODEV; | |
831 | } | |
832 | if (PCIBIOS_SUCCESSFUL != | |
833 | pci_read_config_word(dev, VIA686A_BASE_REG, &val)) | |
834 | return -ENODEV; | |
835 | ||
836 | address = val & ~(VIA686A_EXTENT - 1); | |
837 | if (address == 0) { | |
838 | dev_err(&dev->dev, "base address not set - upgrade BIOS " | |
839 | "or use force_addr=0xaddr\n"); | |
840 | return -ENODEV; | |
841 | } | |
842 | ||
843 | if (PCIBIOS_SUCCESSFUL != | |
844 | pci_read_config_word(dev, VIA686A_ENABLE_REG, &val)) | |
845 | return -ENODEV; | |
846 | if (!(val & 0x0001)) { | |
847 | if (!force_addr) { | |
848 | dev_warn(&dev->dev, "Sensors disabled, enable " | |
849 | "with force_addr=0x%x\n", address); | |
850 | return -ENODEV; | |
851 | } | |
852 | ||
853 | dev_warn(&dev->dev, "Enabling sensors\n"); | |
854 | if (PCIBIOS_SUCCESSFUL != | |
855 | pci_write_config_word(dev, VIA686A_ENABLE_REG, | |
856 | val | 0x0001)) | |
857 | return -ENODEV; | |
858 | } | |
859 | ||
860 | if (platform_driver_register(&via686a_driver)) | |
861 | goto exit; | |
862 | ||
863 | /* Sets global pdev as a side effect */ | |
864 | if (via686a_device_add(address)) | |
865 | goto exit_unregister; | |
866 | ||
867 | /* Always return failure here. This is to allow other drivers to bind | |
868 | * to this pci device. We don't really want to have control over the | |
869 | * pci device, we only wanted to read as few register values from it. | |
870 | */ | |
871 | s_bridge = pci_dev_get(dev); | |
872 | return -ENODEV; | |
873 | ||
874 | exit_unregister: | |
875 | platform_driver_unregister(&via686a_driver); | |
876 | exit: | |
877 | return -ENODEV; | |
878 | } | |
879 | ||
880 | static struct pci_driver via686a_pci_driver = { | |
881 | .name = "via686a", | |
882 | .id_table = via686a_pci_ids, | |
883 | .probe = via686a_pci_probe, | |
884 | }; | |
885 | ||
886 | static int __init sm_via686a_init(void) | |
887 | { | |
888 | return pci_register_driver(&via686a_pci_driver); | |
889 | } | |
890 | ||
891 | static void __exit sm_via686a_exit(void) | |
892 | { | |
893 | pci_unregister_driver(&via686a_pci_driver); | |
894 | if (s_bridge != NULL) { | |
895 | platform_device_unregister(pdev); | |
896 | platform_driver_unregister(&via686a_driver); | |
897 | pci_dev_put(s_bridge); | |
898 | s_bridge = NULL; | |
899 | } | |
900 | } | |
901 | ||
902 | MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, " | |
903 | "Mark Studebaker <mdsxyz123@yahoo.com> " | |
904 | "and Bob Dougherty <bobd@stanford.edu>"); | |
905 | MODULE_DESCRIPTION("VIA 686A Sensor device"); | |
906 | MODULE_LICENSE("GPL"); | |
907 | ||
908 | module_init(sm_via686a_init); | |
909 | module_exit(sm_via686a_exit); |