Commit | Line | Data |
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1da177e4 | 1 | /* |
9004ac81 GR |
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 | * | |
10 | * (Some conversion-factor data were contributed by Jonathan Teh Soon Yew | |
11 | * <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.) | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
1da177e4 LT |
27 | |
28 | /* | |
9004ac81 GR |
29 | * Supports the Via VT82C686A, VT82C686B south bridges. |
30 | * Reports all as a 686A. | |
31 | * Warning - only supports a single device. | |
32 | */ | |
1da177e4 | 33 | |
774f7827 JP |
34 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
35 | ||
1da177e4 LT |
36 | #include <linux/module.h> |
37 | #include <linux/slab.h> | |
38 | #include <linux/pci.h> | |
1da177e4 | 39 | #include <linux/jiffies.h> |
2ec342e6 | 40 | #include <linux/platform_device.h> |
943b0830 | 41 | #include <linux/hwmon.h> |
1e71a5a2 | 42 | #include <linux/hwmon-sysfs.h> |
943b0830 | 43 | #include <linux/err.h> |
1da177e4 | 44 | #include <linux/init.h> |
9a61bf63 | 45 | #include <linux/mutex.h> |
a5ebe668 | 46 | #include <linux/sysfs.h> |
b9acb64a | 47 | #include <linux/acpi.h> |
6055fae8 | 48 | #include <linux/io.h> |
1da177e4 LT |
49 | |
50 | ||
9004ac81 GR |
51 | /* |
52 | * If force_addr is set to anything different from 0, we forcibly enable | |
53 | * the device at the given address. | |
54 | */ | |
02002963 | 55 | static unsigned short force_addr; |
1da177e4 LT |
56 | module_param(force_addr, ushort, 0); |
57 | MODULE_PARM_DESC(force_addr, | |
58 | "Initialize the base address of the sensors"); | |
59 | ||
2ec342e6 | 60 | static struct platform_device *pdev; |
1da177e4 LT |
61 | |
62 | /* | |
9004ac81 GR |
63 | * The Via 686a southbridge has a LM78-like chip integrated on the same IC. |
64 | * This driver is a customized copy of lm78.c | |
65 | */ | |
1da177e4 LT |
66 | |
67 | /* Many VIA686A constants specified below */ | |
68 | ||
69 | /* Length of ISA address segment */ | |
be8992c2 JD |
70 | #define VIA686A_EXTENT 0x80 |
71 | #define VIA686A_BASE_REG 0x70 | |
72 | #define VIA686A_ENABLE_REG 0x74 | |
1da177e4 LT |
73 | |
74 | /* The VIA686A registers */ | |
75 | /* ins numbered 0-4 */ | |
be8992c2 JD |
76 | #define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2)) |
77 | #define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2)) | |
78 | #define VIA686A_REG_IN(nr) (0x22 + (nr)) | |
1da177e4 LT |
79 | |
80 | /* fans numbered 1-2 */ | |
be8992c2 JD |
81 | #define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr)) |
82 | #define VIA686A_REG_FAN(nr) (0x28 + (nr)) | |
1da177e4 | 83 | |
1da177e4 | 84 | /* temps numbered 1-3 */ |
563db2fe JD |
85 | static const u8 VIA686A_REG_TEMP[] = { 0x20, 0x21, 0x1f }; |
86 | static const u8 VIA686A_REG_TEMP_OVER[] = { 0x39, 0x3d, 0x1d }; | |
87 | static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e }; | |
be8992c2 JD |
88 | /* bits 7-6 */ |
89 | #define VIA686A_REG_TEMP_LOW1 0x4b | |
90 | /* 2 = bits 5-4, 3 = bits 7-6 */ | |
91 | #define VIA686A_REG_TEMP_LOW23 0x49 | |
92 | ||
93 | #define VIA686A_REG_ALARM1 0x41 | |
94 | #define VIA686A_REG_ALARM2 0x42 | |
95 | #define VIA686A_REG_FANDIV 0x47 | |
96 | #define VIA686A_REG_CONFIG 0x40 | |
9004ac81 GR |
97 | /* |
98 | * The following register sets temp interrupt mode (bits 1-0 for temp1, | |
99 | * 3-2 for temp2, 5-4 for temp3). Modes are: | |
100 | * 00 interrupt stays as long as value is out-of-range | |
101 | * 01 interrupt is cleared once register is read (default) | |
102 | * 10 comparator mode- like 00, but ignores hysteresis | |
103 | * 11 same as 00 | |
104 | */ | |
be8992c2 | 105 | #define VIA686A_REG_TEMP_MODE 0x4b |
1da177e4 | 106 | /* We'll just assume that you want to set all 3 simultaneously: */ |
be8992c2 JD |
107 | #define VIA686A_TEMP_MODE_MASK 0x3F |
108 | #define VIA686A_TEMP_MODE_CONTINUOUS 0x00 | |
1da177e4 | 109 | |
9004ac81 GR |
110 | /* |
111 | * Conversions. Limit checking is only done on the TO_REG | |
112 | * variants. | |
113 | * | |
114 | ******** VOLTAGE CONVERSIONS (Bob Dougherty) ******** | |
115 | * From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew): | |
116 | * voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp | |
117 | * voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V | |
118 | * voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V | |
119 | * voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V | |
120 | * voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V | |
121 | * in[i]=(data[i+2]*25.0+133)*voltagefactor[i]; | |
122 | * That is: | |
123 | * volts = (25*regVal+133)*factor | |
124 | * regVal = (volts/factor-133)/25 | |
125 | * (These conversions were contributed by Jonathan Teh Soon Yew | |
126 | * <j.teh@iname.com>) | |
127 | */ | |
1da177e4 LT |
128 | static inline u8 IN_TO_REG(long val, int inNum) |
129 | { | |
9004ac81 GR |
130 | /* |
131 | * To avoid floating point, we multiply constants by 10 (100 for +12V). | |
132 | * Rounding is done (120500 is actually 133000 - 12500). | |
133 | * Remember that val is expressed in 0.001V/bit, which is why we divide | |
134 | * by an additional 10000 (100000 for +12V): 1000 for val and 10 (100) | |
135 | * for the constants. | |
136 | */ | |
1da177e4 LT |
137 | if (inNum <= 1) |
138 | return (u8) | |
139 | SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255); | |
140 | else if (inNum == 2) | |
141 | return (u8) | |
142 | SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255); | |
143 | else if (inNum == 3) | |
144 | return (u8) | |
145 | SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255); | |
146 | else | |
147 | return (u8) | |
148 | SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255); | |
149 | } | |
150 | ||
151 | static inline long IN_FROM_REG(u8 val, int inNum) | |
152 | { | |
9004ac81 GR |
153 | /* |
154 | * To avoid floating point, we multiply constants by 10 (100 for +12V). | |
155 | * We also multiply them by 1000 because we want 0.001V/bit for the | |
156 | * output value. Rounding is done. | |
157 | */ | |
1da177e4 LT |
158 | if (inNum <= 1) |
159 | return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024); | |
160 | else if (inNum == 2) | |
161 | return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737); | |
162 | else if (inNum == 3) | |
163 | return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108); | |
164 | else | |
165 | return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714); | |
166 | } | |
167 | ||
168 | /********* FAN RPM CONVERSIONS ********/ | |
9004ac81 GR |
169 | /* |
170 | * Higher register values = slower fans (the fan's strobe gates a counter). | |
171 | * But this chip saturates back at 0, not at 255 like all the other chips. | |
172 | * So, 0 means 0 RPM | |
173 | */ | |
1da177e4 LT |
174 | static inline u8 FAN_TO_REG(long rpm, int div) |
175 | { | |
176 | if (rpm == 0) | |
177 | return 0; | |
178 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
179 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255); | |
180 | } | |
181 | ||
9004ac81 GR |
182 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (val) == 255 ? 0 : 1350000 / \ |
183 | ((val) * (div))) | |
1da177e4 LT |
184 | |
185 | /******** TEMP CONVERSIONS (Bob Dougherty) *********/ | |
9004ac81 GR |
186 | /* |
187 | * linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew) | |
188 | * if(temp<169) | |
189 | * return double(temp)*0.427-32.08; | |
190 | * else if(temp>=169 && temp<=202) | |
191 | * return double(temp)*0.582-58.16; | |
192 | * else | |
193 | * return double(temp)*0.924-127.33; | |
194 | * | |
195 | * A fifth-order polynomial fits the unofficial data (provided by Alex van | |
196 | * Kaam <darkside@chello.nl>) a bit better. It also give more reasonable | |
197 | * numbers on my machine (ie. they agree with what my BIOS tells me). | |
198 | * Here's the fifth-order fit to the 8-bit data: | |
199 | * temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 - | |
200 | * 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0. | |
201 | * | |
202 | * (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for | |
203 | * finding my typos in this formula!) | |
204 | * | |
205 | * Alas, none of the elegant function-fit solutions will work because we | |
206 | * aren't allowed to use floating point in the kernel and doing it with | |
207 | * integers doesn't provide enough precision. So we'll do boring old | |
208 | * look-up table stuff. The unofficial data (see below) have effectively | |
209 | * 7-bit resolution (they are rounded to the nearest degree). I'm assuming | |
210 | * that the transfer function of the device is monotonic and smooth, so a | |
211 | * smooth function fit to the data will allow us to get better precision. | |
212 | * I used the 5th-order poly fit described above and solved for | |
213 | * VIA register values 0-255. I *10 before rounding, so we get tenth-degree | |
214 | * precision. (I could have done all 1024 values for our 10-bit readings, | |
215 | * but the function is very linear in the useful range (0-80 deg C), so | |
216 | * we'll just use linear interpolation for 10-bit readings.) So, tempLUT | |
217 | * is the temp at via register values 0-255: | |
218 | */ | |
219 | static const s16 tempLUT[] = { | |
220 | -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519, | |
be8992c2 JD |
221 | -503, -487, -471, -456, -442, -428, -414, -400, -387, -375, |
222 | -362, -350, -339, -327, -316, -305, -295, -285, -275, -265, | |
223 | -255, -246, -237, -229, -220, -212, -204, -196, -188, -180, | |
224 | -173, -166, -159, -152, -145, -139, -132, -126, -120, -114, | |
225 | -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49, | |
226 | -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16, | |
227 | 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84, | |
228 | 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138, | |
229 | 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189, | |
230 | 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241, | |
231 | 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294, | |
232 | 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348, | |
233 | 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404, | |
234 | 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464, | |
235 | 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532, | |
236 | 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614, | |
237 | 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718, | |
238 | 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856, | |
239 | 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044, | |
240 | 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252, | |
241 | 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462 | |
1da177e4 LT |
242 | }; |
243 | ||
9004ac81 GR |
244 | /* |
245 | * the original LUT values from Alex van Kaam <darkside@chello.nl> | |
246 | * (for via register values 12-240): | |
247 | * {-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31, | |
248 | * -30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15, | |
249 | * -15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3, | |
250 | * -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, | |
251 | * 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, | |
252 | * 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, | |
253 | * 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, | |
254 | * 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, | |
255 | * 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, | |
256 | * 85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110}; | |
257 | * | |
258 | * | |
259 | * Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed | |
260 | * an extra term for a good fit to these inverse data!) and then | |
261 | * solving for each temp value from -50 to 110 (the useable range for | |
262 | * this chip). Here's the fit: | |
263 | * viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4 | |
264 | * - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01) | |
265 | * Note that n=161: | |
266 | */ | |
267 | static const u8 viaLUT[] = { | |
268 | 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23, | |
be8992c2 JD |
269 | 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, |
270 | 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, | |
271 | 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100, | |
272 | 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129, | |
273 | 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156, | |
274 | 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, | |
275 | 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199, | |
276 | 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213, | |
277 | 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224, | |
278 | 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232, | |
279 | 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239, | |
280 | 239, 240 | |
1da177e4 LT |
281 | }; |
282 | ||
9004ac81 GR |
283 | /* |
284 | * Converting temps to (8-bit) hyst and over registers | |
285 | * No interpolation here. | |
286 | * The +50 is because the temps start at -50 | |
287 | */ | |
1da177e4 LT |
288 | static inline u8 TEMP_TO_REG(long val) |
289 | { | |
be8992c2 | 290 | return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 : |
1da177e4 LT |
291 | (val < 0 ? val - 500 : val + 500) / 1000 + 50]; |
292 | } | |
293 | ||
294 | /* for 8-bit temperature hyst and over registers */ | |
088341bd | 295 | #define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100) |
1da177e4 LT |
296 | |
297 | /* for 10-bit temperature readings */ | |
298 | static inline long TEMP_FROM_REG10(u16 val) | |
299 | { | |
300 | u16 eightBits = val >> 2; | |
301 | u16 twoBits = val & 3; | |
302 | ||
303 | /* no interpolation for these */ | |
304 | if (twoBits == 0 || eightBits == 255) | |
305 | return TEMP_FROM_REG(eightBits); | |
306 | ||
307 | /* do some linear interpolation */ | |
308 | return (tempLUT[eightBits] * (4 - twoBits) + | |
be8992c2 | 309 | tempLUT[eightBits + 1] * twoBits) * 25; |
1da177e4 LT |
310 | } |
311 | ||
1da177e4 | 312 | #define DIV_FROM_REG(val) (1 << (val)) |
9004ac81 | 313 | #define DIV_TO_REG(val) ((val) == 8 ? 3 : (val) == 4 ? 2 : (val) == 1 ? 0 : 1) |
1da177e4 | 314 | |
9004ac81 GR |
315 | /* |
316 | * For each registered chip, we need to keep some data in memory. | |
317 | * The structure is dynamically allocated. | |
318 | */ | |
1da177e4 | 319 | struct via686a_data { |
2ec342e6 JD |
320 | unsigned short addr; |
321 | const char *name; | |
1beeffe4 | 322 | struct device *hwmon_dev; |
9a61bf63 | 323 | struct mutex update_lock; |
1da177e4 LT |
324 | char valid; /* !=0 if following fields are valid */ |
325 | unsigned long last_updated; /* In jiffies */ | |
326 | ||
327 | u8 in[5]; /* Register value */ | |
328 | u8 in_max[5]; /* Register value */ | |
329 | u8 in_min[5]; /* Register value */ | |
330 | u8 fan[2]; /* Register value */ | |
331 | u8 fan_min[2]; /* Register value */ | |
332 | u16 temp[3]; /* Register value 10 bit */ | |
333 | u8 temp_over[3]; /* Register value */ | |
334 | u8 temp_hyst[3]; /* Register value */ | |
335 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
336 | u16 alarms; /* Register encoding, combined */ | |
337 | }; | |
338 | ||
339 | static struct pci_dev *s_bridge; /* pointer to the (only) via686a */ | |
340 | ||
2ec342e6 | 341 | static int via686a_probe(struct platform_device *pdev); |
d0546128 | 342 | static int __devexit via686a_remove(struct platform_device *pdev); |
1da177e4 | 343 | |
2ec342e6 | 344 | static inline int via686a_read_value(struct via686a_data *data, u8 reg) |
1da177e4 | 345 | { |
2ec342e6 | 346 | return inb_p(data->addr + reg); |
1da177e4 LT |
347 | } |
348 | ||
2ec342e6 | 349 | static inline void via686a_write_value(struct via686a_data *data, u8 reg, |
1da177e4 LT |
350 | u8 value) |
351 | { | |
2ec342e6 | 352 | outb_p(value, data->addr + reg); |
1da177e4 LT |
353 | } |
354 | ||
355 | static struct via686a_data *via686a_update_device(struct device *dev); | |
2ec342e6 | 356 | static void via686a_init_device(struct via686a_data *data); |
1da177e4 LT |
357 | |
358 | /* following are the sysfs callback functions */ | |
359 | ||
360 | /* 7 voltage sensors */ | |
1e71a5a2 JD |
361 | static ssize_t show_in(struct device *dev, struct device_attribute *da, |
362 | char *buf) { | |
1da177e4 | 363 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
364 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
365 | int nr = attr->index; | |
1da177e4 LT |
366 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in[nr], nr)); |
367 | } | |
368 | ||
1e71a5a2 JD |
369 | static ssize_t show_in_min(struct device *dev, struct device_attribute *da, |
370 | char *buf) { | |
1da177e4 | 371 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
372 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
373 | int nr = attr->index; | |
1da177e4 LT |
374 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_min[nr], nr)); |
375 | } | |
376 | ||
1e71a5a2 JD |
377 | static ssize_t show_in_max(struct device *dev, struct device_attribute *da, |
378 | char *buf) { | |
1da177e4 | 379 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
380 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
381 | int nr = attr->index; | |
1da177e4 LT |
382 | return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr)); |
383 | } | |
384 | ||
1e71a5a2 JD |
385 | static ssize_t set_in_min(struct device *dev, struct device_attribute *da, |
386 | const char *buf, size_t count) { | |
2ec342e6 | 387 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
388 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
389 | int nr = attr->index; | |
9004ac81 GR |
390 | unsigned long val; |
391 | int err; | |
392 | ||
393 | err = kstrtoul(buf, 10, &val); | |
394 | if (err) | |
395 | return err; | |
1da177e4 | 396 | |
9a61bf63 | 397 | mutex_lock(&data->update_lock); |
be8992c2 | 398 | data->in_min[nr] = IN_TO_REG(val, nr); |
2ec342e6 | 399 | via686a_write_value(data, VIA686A_REG_IN_MIN(nr), |
1da177e4 | 400 | data->in_min[nr]); |
9a61bf63 | 401 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
402 | return count; |
403 | } | |
1e71a5a2 JD |
404 | static ssize_t set_in_max(struct device *dev, struct device_attribute *da, |
405 | const char *buf, size_t count) { | |
2ec342e6 | 406 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
407 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
408 | int nr = attr->index; | |
9004ac81 GR |
409 | unsigned long val; |
410 | int err; | |
411 | ||
412 | err = kstrtoul(buf, 10, &val); | |
413 | if (err) | |
414 | return err; | |
1da177e4 | 415 | |
9a61bf63 | 416 | mutex_lock(&data->update_lock); |
be8992c2 | 417 | data->in_max[nr] = IN_TO_REG(val, nr); |
2ec342e6 | 418 | via686a_write_value(data, VIA686A_REG_IN_MAX(nr), |
1da177e4 | 419 | data->in_max[nr]); |
9a61bf63 | 420 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
421 | return count; |
422 | } | |
423 | #define show_in_offset(offset) \ | |
1e71a5a2 JD |
424 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
425 | show_in, NULL, offset); \ | |
426 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
427 | show_in_min, set_in_min, offset); \ | |
428 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
429 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
430 | |
431 | show_in_offset(0); | |
432 | show_in_offset(1); | |
433 | show_in_offset(2); | |
434 | show_in_offset(3); | |
435 | show_in_offset(4); | |
436 | ||
437 | /* 3 temperatures */ | |
1e71a5a2 JD |
438 | static ssize_t show_temp(struct device *dev, struct device_attribute *da, |
439 | char *buf) { | |
1da177e4 | 440 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
441 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
442 | int nr = attr->index; | |
1da177e4 LT |
443 | return sprintf(buf, "%ld\n", TEMP_FROM_REG10(data->temp[nr])); |
444 | } | |
1e71a5a2 JD |
445 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *da, |
446 | char *buf) { | |
1da177e4 | 447 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
448 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
449 | int nr = attr->index; | |
1da177e4 LT |
450 | return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_over[nr])); |
451 | } | |
1e71a5a2 JD |
452 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *da, |
453 | char *buf) { | |
1da177e4 | 454 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
455 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
456 | int nr = attr->index; | |
1da177e4 LT |
457 | return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr])); |
458 | } | |
1e71a5a2 JD |
459 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *da, |
460 | const char *buf, size_t count) { | |
2ec342e6 | 461 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
462 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
463 | int nr = attr->index; | |
9004ac81 GR |
464 | long val; |
465 | int err; | |
466 | ||
467 | err = kstrtol(buf, 10, &val); | |
468 | if (err) | |
469 | return err; | |
1da177e4 | 470 | |
9a61bf63 | 471 | mutex_lock(&data->update_lock); |
1da177e4 | 472 | data->temp_over[nr] = TEMP_TO_REG(val); |
2ec342e6 | 473 | via686a_write_value(data, VIA686A_REG_TEMP_OVER[nr], |
563db2fe | 474 | data->temp_over[nr]); |
9a61bf63 | 475 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
476 | return count; |
477 | } | |
1e71a5a2 JD |
478 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da, |
479 | const char *buf, size_t count) { | |
2ec342e6 | 480 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
481 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
482 | int nr = attr->index; | |
9004ac81 GR |
483 | long val; |
484 | int err; | |
485 | ||
486 | err = kstrtol(buf, 10, &val); | |
487 | if (err) | |
488 | return err; | |
1da177e4 | 489 | |
9a61bf63 | 490 | mutex_lock(&data->update_lock); |
1da177e4 | 491 | data->temp_hyst[nr] = TEMP_TO_REG(val); |
2ec342e6 | 492 | via686a_write_value(data, VIA686A_REG_TEMP_HYST[nr], |
563db2fe | 493 | data->temp_hyst[nr]); |
9a61bf63 | 494 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
495 | return count; |
496 | } | |
497 | #define show_temp_offset(offset) \ | |
1e71a5a2 JD |
498 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
499 | show_temp, NULL, offset - 1); \ | |
500 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
501 | show_temp_over, set_temp_over, offset - 1); \ | |
502 | static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ | |
503 | show_temp_hyst, set_temp_hyst, offset - 1); | |
1da177e4 LT |
504 | |
505 | show_temp_offset(1); | |
506 | show_temp_offset(2); | |
507 | show_temp_offset(3); | |
508 | ||
509 | /* 2 Fans */ | |
1e71a5a2 JD |
510 | static ssize_t show_fan(struct device *dev, struct device_attribute *da, |
511 | char *buf) { | |
1da177e4 | 512 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
513 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
514 | int nr = attr->index; | |
be8992c2 | 515 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
9004ac81 | 516 | DIV_FROM_REG(data->fan_div[nr]))); |
1da177e4 | 517 | } |
1e71a5a2 JD |
518 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, |
519 | char *buf) { | |
1da177e4 | 520 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
521 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
522 | int nr = attr->index; | |
be8992c2 | 523 | return sprintf(buf, "%d\n", |
9004ac81 GR |
524 | FAN_FROM_REG(data->fan_min[nr], |
525 | DIV_FROM_REG(data->fan_div[nr]))); | |
1da177e4 | 526 | } |
1e71a5a2 JD |
527 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, |
528 | char *buf) { | |
1da177e4 | 529 | struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2 JD |
530 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
531 | int nr = attr->index; | |
9004ac81 | 532 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
1da177e4 | 533 | } |
1e71a5a2 JD |
534 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, |
535 | const char *buf, size_t count) { | |
2ec342e6 | 536 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
537 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
538 | int nr = attr->index; | |
9004ac81 GR |
539 | unsigned long val; |
540 | int err; | |
541 | ||
542 | err = kstrtoul(buf, 10, &val); | |
543 | if (err) | |
544 | return err; | |
1da177e4 | 545 | |
9a61bf63 | 546 | mutex_lock(&data->update_lock); |
1da177e4 | 547 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
2ec342e6 | 548 | via686a_write_value(data, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]); |
9a61bf63 | 549 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
550 | return count; |
551 | } | |
1e71a5a2 JD |
552 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, |
553 | const char *buf, size_t count) { | |
2ec342e6 | 554 | struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2 JD |
555 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
556 | int nr = attr->index; | |
1da177e4 | 557 | int old; |
9004ac81 GR |
558 | unsigned long val; |
559 | int err; | |
560 | ||
561 | err = kstrtoul(buf, 10, &val); | |
562 | if (err) | |
563 | return err; | |
1da177e4 | 564 | |
9a61bf63 | 565 | mutex_lock(&data->update_lock); |
2ec342e6 | 566 | old = via686a_read_value(data, VIA686A_REG_FANDIV); |
1da177e4 LT |
567 | data->fan_div[nr] = DIV_TO_REG(val); |
568 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); | |
2ec342e6 | 569 | via686a_write_value(data, VIA686A_REG_FANDIV, old); |
9a61bf63 | 570 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
571 | return count; |
572 | } | |
573 | ||
574 | #define show_fan_offset(offset) \ | |
1e71a5a2 JD |
575 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
576 | show_fan, NULL, offset - 1); \ | |
577 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
578 | show_fan_min, set_fan_min, offset - 1); \ | |
579 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
580 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
581 | |
582 | show_fan_offset(1); | |
583 | show_fan_offset(2); | |
584 | ||
585 | /* Alarms */ | |
9004ac81 GR |
586 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
587 | char *buf) | |
588 | { | |
1da177e4 | 589 | struct via686a_data *data = via686a_update_device(dev); |
68188ba7 | 590 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 591 | } |
9004ac81 | 592 | |
1d66c64c | 593 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 | 594 | |
13ff05e9 JD |
595 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
596 | char *buf) | |
597 | { | |
598 | int bitnr = to_sensor_dev_attr(attr)->index; | |
599 | struct via686a_data *data = via686a_update_device(dev); | |
600 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
601 | } | |
602 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
603 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
604 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
605 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
606 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
607 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
608 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); | |
609 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 15); | |
610 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
611 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
612 | ||
2ec342e6 JD |
613 | static ssize_t show_name(struct device *dev, struct device_attribute |
614 | *devattr, char *buf) | |
615 | { | |
616 | struct via686a_data *data = dev_get_drvdata(dev); | |
617 | return sprintf(buf, "%s\n", data->name); | |
618 | } | |
619 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
620 | ||
a5ebe668 | 621 | static struct attribute *via686a_attributes[] = { |
1e71a5a2 JD |
622 | &sensor_dev_attr_in0_input.dev_attr.attr, |
623 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
624 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
625 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
626 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
627 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
628 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
629 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
630 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
631 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
632 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
633 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
634 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
635 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
636 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
13ff05e9 JD |
637 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
638 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
639 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
640 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
641 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
1e71a5a2 JD |
642 | |
643 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
644 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
645 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
646 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
647 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
648 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
649 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
650 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
651 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
13ff05e9 JD |
652 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
653 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
654 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
1e71a5a2 JD |
655 | |
656 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
657 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
658 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
659 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
660 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
661 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
13ff05e9 JD |
662 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
663 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
a5ebe668 JD |
664 | |
665 | &dev_attr_alarms.attr, | |
2ec342e6 | 666 | &dev_attr_name.attr, |
a5ebe668 JD |
667 | NULL |
668 | }; | |
669 | ||
670 | static const struct attribute_group via686a_group = { | |
671 | .attrs = via686a_attributes, | |
672 | }; | |
673 | ||
2ec342e6 | 674 | static struct platform_driver via686a_driver = { |
cdaf7934 | 675 | .driver = { |
87218842 | 676 | .owner = THIS_MODULE, |
cdaf7934 LR |
677 | .name = "via686a", |
678 | }, | |
2ec342e6 JD |
679 | .probe = via686a_probe, |
680 | .remove = __devexit_p(via686a_remove), | |
1da177e4 LT |
681 | }; |
682 | ||
683 | ||
684 | /* This is called when the module is loaded */ | |
2ec342e6 | 685 | static int __devinit via686a_probe(struct platform_device *pdev) |
1da177e4 | 686 | { |
1da177e4 | 687 | struct via686a_data *data; |
2ec342e6 JD |
688 | struct resource *res; |
689 | int err; | |
1da177e4 LT |
690 | |
691 | /* Reserve the ISA region */ | |
2ec342e6 | 692 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
fd55bc00 GR |
693 | if (!devm_request_region(&pdev->dev, res->start, VIA686A_EXTENT, |
694 | via686a_driver.driver.name)) { | |
2ec342e6 JD |
695 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", |
696 | (unsigned long)res->start, (unsigned long)res->end); | |
1da177e4 LT |
697 | return -ENODEV; |
698 | } | |
699 | ||
fd55bc00 GR |
700 | data = devm_kzalloc(&pdev->dev, sizeof(struct via686a_data), |
701 | GFP_KERNEL); | |
702 | if (!data) | |
703 | return -ENOMEM; | |
1da177e4 | 704 | |
2ec342e6 JD |
705 | platform_set_drvdata(pdev, data); |
706 | data->addr = res->start; | |
707 | data->name = "via686a"; | |
9a61bf63 | 708 | mutex_init(&data->update_lock); |
be8992c2 | 709 | |
1da177e4 | 710 | /* Initialize the VIA686A chip */ |
2ec342e6 | 711 | via686a_init_device(data); |
1da177e4 LT |
712 | |
713 | /* Register sysfs hooks */ | |
9004ac81 GR |
714 | err = sysfs_create_group(&pdev->dev.kobj, &via686a_group); |
715 | if (err) | |
fd55bc00 | 716 | return err; |
a5ebe668 | 717 | |
1beeffe4 TJ |
718 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
719 | if (IS_ERR(data->hwmon_dev)) { | |
720 | err = PTR_ERR(data->hwmon_dev); | |
a5ebe668 | 721 | goto exit_remove_files; |
943b0830 MH |
722 | } |
723 | ||
1da177e4 LT |
724 | return 0; |
725 | ||
a5ebe668 | 726 | exit_remove_files: |
2ec342e6 | 727 | sysfs_remove_group(&pdev->dev.kobj, &via686a_group); |
1da177e4 LT |
728 | return err; |
729 | } | |
730 | ||
2ec342e6 | 731 | static int __devexit via686a_remove(struct platform_device *pdev) |
1da177e4 | 732 | { |
2ec342e6 | 733 | struct via686a_data *data = platform_get_drvdata(pdev); |
1da177e4 | 734 | |
1beeffe4 | 735 | hwmon_device_unregister(data->hwmon_dev); |
2ec342e6 | 736 | sysfs_remove_group(&pdev->dev.kobj, &via686a_group); |
943b0830 | 737 | |
1da177e4 LT |
738 | return 0; |
739 | } | |
740 | ||
f790674d JD |
741 | static void via686a_update_fan_div(struct via686a_data *data) |
742 | { | |
743 | int reg = via686a_read_value(data, VIA686A_REG_FANDIV); | |
744 | data->fan_div[0] = (reg >> 4) & 0x03; | |
745 | data->fan_div[1] = reg >> 6; | |
746 | } | |
747 | ||
2ec342e6 | 748 | static void __devinit via686a_init_device(struct via686a_data *data) |
1da177e4 LT |
749 | { |
750 | u8 reg; | |
751 | ||
752 | /* Start monitoring */ | |
2ec342e6 JD |
753 | reg = via686a_read_value(data, VIA686A_REG_CONFIG); |
754 | via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F); | |
1da177e4 LT |
755 | |
756 | /* Configure temp interrupt mode for continuous-interrupt operation */ | |
2ec342e6 JD |
757 | reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE); |
758 | via686a_write_value(data, VIA686A_REG_TEMP_MODE, | |
58fe0809 JD |
759 | (reg & ~VIA686A_TEMP_MODE_MASK) |
760 | | VIA686A_TEMP_MODE_CONTINUOUS); | |
f790674d JD |
761 | |
762 | /* Pre-read fan clock divisor values */ | |
763 | via686a_update_fan_div(data); | |
1da177e4 LT |
764 | } |
765 | ||
766 | static struct via686a_data *via686a_update_device(struct device *dev) | |
767 | { | |
2ec342e6 | 768 | struct via686a_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
769 | int i; |
770 | ||
9a61bf63 | 771 | mutex_lock(&data->update_lock); |
1da177e4 LT |
772 | |
773 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
774 | || !data->valid) { | |
775 | for (i = 0; i <= 4; i++) { | |
776 | data->in[i] = | |
2ec342e6 JD |
777 | via686a_read_value(data, VIA686A_REG_IN(i)); |
778 | data->in_min[i] = via686a_read_value(data, | |
1da177e4 LT |
779 | VIA686A_REG_IN_MIN |
780 | (i)); | |
781 | data->in_max[i] = | |
2ec342e6 | 782 | via686a_read_value(data, VIA686A_REG_IN_MAX(i)); |
1da177e4 LT |
783 | } |
784 | for (i = 1; i <= 2; i++) { | |
785 | data->fan[i - 1] = | |
2ec342e6 JD |
786 | via686a_read_value(data, VIA686A_REG_FAN(i)); |
787 | data->fan_min[i - 1] = via686a_read_value(data, | |
1da177e4 LT |
788 | VIA686A_REG_FAN_MIN(i)); |
789 | } | |
790 | for (i = 0; i <= 2; i++) { | |
2ec342e6 | 791 | data->temp[i] = via686a_read_value(data, |
563db2fe | 792 | VIA686A_REG_TEMP[i]) << 2; |
1da177e4 | 793 | data->temp_over[i] = |
2ec342e6 | 794 | via686a_read_value(data, |
563db2fe | 795 | VIA686A_REG_TEMP_OVER[i]); |
1da177e4 | 796 | data->temp_hyst[i] = |
2ec342e6 | 797 | via686a_read_value(data, |
563db2fe | 798 | VIA686A_REG_TEMP_HYST[i]); |
1da177e4 | 799 | } |
9004ac81 GR |
800 | /* |
801 | * add in lower 2 bits | |
802 | * temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 | |
803 | * temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 | |
804 | * temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 | |
1da177e4 | 805 | */ |
2ec342e6 | 806 | data->temp[0] |= (via686a_read_value(data, |
1da177e4 LT |
807 | VIA686A_REG_TEMP_LOW1) |
808 | & 0xc0) >> 6; | |
809 | data->temp[1] |= | |
2ec342e6 | 810 | (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & |
1da177e4 LT |
811 | 0x30) >> 4; |
812 | data->temp[2] |= | |
2ec342e6 | 813 | (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & |
1da177e4 LT |
814 | 0xc0) >> 6; |
815 | ||
f790674d | 816 | via686a_update_fan_div(data); |
1da177e4 | 817 | data->alarms = |
2ec342e6 | 818 | via686a_read_value(data, |
1da177e4 | 819 | VIA686A_REG_ALARM1) | |
2ec342e6 | 820 | (via686a_read_value(data, VIA686A_REG_ALARM2) << 8); |
1da177e4 LT |
821 | data->last_updated = jiffies; |
822 | data->valid = 1; | |
823 | } | |
824 | ||
9a61bf63 | 825 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
826 | |
827 | return data; | |
828 | } | |
829 | ||
600151b9 | 830 | static DEFINE_PCI_DEVICE_TABLE(via686a_pci_ids) = { |
be8992c2 | 831 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, |
9004ac81 | 832 | { } |
1da177e4 | 833 | }; |
1da177e4 LT |
834 | MODULE_DEVICE_TABLE(pci, via686a_pci_ids); |
835 | ||
2ec342e6 JD |
836 | static int __devinit via686a_device_add(unsigned short address) |
837 | { | |
838 | struct resource res = { | |
839 | .start = address, | |
840 | .end = address + VIA686A_EXTENT - 1, | |
841 | .name = "via686a", | |
842 | .flags = IORESOURCE_IO, | |
843 | }; | |
844 | int err; | |
845 | ||
b9acb64a JD |
846 | err = acpi_check_resource_conflict(&res); |
847 | if (err) | |
848 | goto exit; | |
849 | ||
2ec342e6 JD |
850 | pdev = platform_device_alloc("via686a", address); |
851 | if (!pdev) { | |
852 | err = -ENOMEM; | |
774f7827 | 853 | pr_err("Device allocation failed\n"); |
2ec342e6 JD |
854 | goto exit; |
855 | } | |
856 | ||
857 | err = platform_device_add_resources(pdev, &res, 1); | |
858 | if (err) { | |
774f7827 | 859 | pr_err("Device resource addition failed (%d)\n", err); |
2ec342e6 JD |
860 | goto exit_device_put; |
861 | } | |
862 | ||
863 | err = platform_device_add(pdev); | |
864 | if (err) { | |
774f7827 | 865 | pr_err("Device addition failed (%d)\n", err); |
2ec342e6 JD |
866 | goto exit_device_put; |
867 | } | |
868 | ||
869 | return 0; | |
870 | ||
871 | exit_device_put: | |
872 | platform_device_put(pdev); | |
873 | exit: | |
874 | return err; | |
875 | } | |
876 | ||
1da177e4 | 877 | static int __devinit via686a_pci_probe(struct pci_dev *dev, |
be8992c2 | 878 | const struct pci_device_id *id) |
1da177e4 | 879 | { |
2ec342e6 | 880 | u16 address, val; |
be8992c2 | 881 | |
2ec342e6 JD |
882 | if (force_addr) { |
883 | address = force_addr & ~(VIA686A_EXTENT - 1); | |
884 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", address); | |
885 | if (PCIBIOS_SUCCESSFUL != | |
886 | pci_write_config_word(dev, VIA686A_BASE_REG, address | 1)) | |
887 | return -ENODEV; | |
888 | } | |
be8992c2 JD |
889 | if (PCIBIOS_SUCCESSFUL != |
890 | pci_read_config_word(dev, VIA686A_BASE_REG, &val)) | |
891 | return -ENODEV; | |
892 | ||
2d8672c5 | 893 | address = val & ~(VIA686A_EXTENT - 1); |
2ec342e6 | 894 | if (address == 0) { |
be8992c2 JD |
895 | dev_err(&dev->dev, "base address not set - upgrade BIOS " |
896 | "or use force_addr=0xaddr\n"); | |
897 | return -ENODEV; | |
898 | } | |
be8992c2 | 899 | |
2ec342e6 JD |
900 | if (PCIBIOS_SUCCESSFUL != |
901 | pci_read_config_word(dev, VIA686A_ENABLE_REG, &val)) | |
902 | return -ENODEV; | |
903 | if (!(val & 0x0001)) { | |
904 | if (!force_addr) { | |
905 | dev_warn(&dev->dev, "Sensors disabled, enable " | |
906 | "with force_addr=0x%x\n", address); | |
907 | return -ENODEV; | |
908 | } | |
909 | ||
910 | dev_warn(&dev->dev, "Enabling sensors\n"); | |
911 | if (PCIBIOS_SUCCESSFUL != | |
912 | pci_write_config_word(dev, VIA686A_ENABLE_REG, | |
913 | val | 0x0001)) | |
914 | return -ENODEV; | |
1da177e4 LT |
915 | } |
916 | ||
2ec342e6 JD |
917 | if (platform_driver_register(&via686a_driver)) |
918 | goto exit; | |
919 | ||
920 | /* Sets global pdev as a side effect */ | |
921 | if (via686a_device_add(address)) | |
922 | goto exit_unregister; | |
923 | ||
9004ac81 GR |
924 | /* |
925 | * Always return failure here. This is to allow other drivers to bind | |
1da177e4 LT |
926 | * to this pci device. We don't really want to have control over the |
927 | * pci device, we only wanted to read as few register values from it. | |
928 | */ | |
2ec342e6 JD |
929 | s_bridge = pci_dev_get(dev); |
930 | return -ENODEV; | |
931 | ||
932 | exit_unregister: | |
933 | platform_driver_unregister(&via686a_driver); | |
934 | exit: | |
1da177e4 LT |
935 | return -ENODEV; |
936 | } | |
937 | ||
938 | static struct pci_driver via686a_pci_driver = { | |
be8992c2 JD |
939 | .name = "via686a", |
940 | .id_table = via686a_pci_ids, | |
941 | .probe = via686a_pci_probe, | |
1da177e4 LT |
942 | }; |
943 | ||
944 | static int __init sm_via686a_init(void) | |
945 | { | |
be8992c2 | 946 | return pci_register_driver(&via686a_pci_driver); |
1da177e4 LT |
947 | } |
948 | ||
949 | static void __exit sm_via686a_exit(void) | |
950 | { | |
951 | pci_unregister_driver(&via686a_pci_driver); | |
952 | if (s_bridge != NULL) { | |
2ec342e6 JD |
953 | platform_device_unregister(pdev); |
954 | platform_driver_unregister(&via686a_driver); | |
1da177e4 LT |
955 | pci_dev_put(s_bridge); |
956 | s_bridge = NULL; | |
957 | } | |
958 | } | |
959 | ||
96de0e25 | 960 | MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
be8992c2 JD |
961 | "Mark Studebaker <mdsxyz123@yahoo.com> " |
962 | "and Bob Dougherty <bobd@stanford.edu>"); | |
1da177e4 LT |
963 | MODULE_DESCRIPTION("VIA 686A Sensor device"); |
964 | MODULE_LICENSE("GPL"); | |
965 | ||
966 | module_init(sm_via686a_init); | |
967 | module_exit(sm_via686a_exit); |