Blame view
drivers/hwmon/via686a.c
30.7 KB
1da177e4c
|
1 2 |
/* via686a.c - Part of lm_sensors, Linux kernel modules |
6328c0e16
|
3 |
for hardware monitoring |
be8992c24
|
4 |
|
1da177e4c
|
5 |
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, |
96de0e252
|
6 |
Kyösti Mälkki <kmalkki@cc.hut.fi>, |
1da177e4c
|
7 8 |
Mark Studebaker <mdsxyz123@yahoo.com>, and Bob Dougherty <bobd@stanford.edu> |
be8992c24
|
9 |
(Some conversion-factor data were contributed by Jonathan Teh Soon Yew |
1da177e4c
|
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
<j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Supports the Via VT82C686A, VT82C686B south bridges. Reports all as a 686A. Warning - only supports a single device. */ |
774f7827e
|
32 |
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
1da177e4c
|
33 34 35 |
#include <linux/module.h> #include <linux/slab.h> #include <linux/pci.h> |
1da177e4c
|
36 |
#include <linux/jiffies.h> |
2ec342e68
|
37 |
#include <linux/platform_device.h> |
943b0830c
|
38 |
#include <linux/hwmon.h> |
1e71a5a2c
|
39 |
#include <linux/hwmon-sysfs.h> |
943b0830c
|
40 |
#include <linux/err.h> |
1da177e4c
|
41 |
#include <linux/init.h> |
9a61bf630
|
42 |
#include <linux/mutex.h> |
a5ebe668a
|
43 |
#include <linux/sysfs.h> |
b9acb64a3
|
44 |
#include <linux/acpi.h> |
6055fae8a
|
45 |
#include <linux/io.h> |
1da177e4c
|
46 47 48 49 |
/* If force_addr is set to anything different from 0, we forcibly enable the device at the given address. */ |
020029631
|
50 |
static unsigned short force_addr; |
1da177e4c
|
51 52 53 |
module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); |
2ec342e68
|
54 |
static struct platform_device *pdev; |
1da177e4c
|
55 56 57 58 59 60 61 62 63 |
/* The Via 686a southbridge has a LM78-like chip integrated on the same IC. This driver is a customized copy of lm78.c */ /* Many VIA686A constants specified below */ /* Length of ISA address segment */ |
be8992c24
|
64 65 66 |
#define VIA686A_EXTENT 0x80 #define VIA686A_BASE_REG 0x70 #define VIA686A_ENABLE_REG 0x74 |
1da177e4c
|
67 68 69 |
/* The VIA686A registers */ /* ins numbered 0-4 */ |
be8992c24
|
70 71 72 |
#define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2)) #define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2)) #define VIA686A_REG_IN(nr) (0x22 + (nr)) |
1da177e4c
|
73 74 |
/* fans numbered 1-2 */ |
be8992c24
|
75 76 |
#define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr)) #define VIA686A_REG_FAN(nr) (0x28 + (nr)) |
1da177e4c
|
77 |
|
1da177e4c
|
78 |
/* temps numbered 1-3 */ |
563db2fe9
|
79 80 81 |
static const u8 VIA686A_REG_TEMP[] = { 0x20, 0x21, 0x1f }; static const u8 VIA686A_REG_TEMP_OVER[] = { 0x39, 0x3d, 0x1d }; static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e }; |
be8992c24
|
82 83 84 85 86 87 88 89 90 91 |
/* bits 7-6 */ #define VIA686A_REG_TEMP_LOW1 0x4b /* 2 = bits 5-4, 3 = bits 7-6 */ #define VIA686A_REG_TEMP_LOW23 0x49 #define VIA686A_REG_ALARM1 0x41 #define VIA686A_REG_ALARM2 0x42 #define VIA686A_REG_FANDIV 0x47 #define VIA686A_REG_CONFIG 0x40 /* The following register sets temp interrupt mode (bits 1-0 for temp1, |
1da177e4c
|
92 93 94 95 96 |
3-2 for temp2, 5-4 for temp3). Modes are: 00 interrupt stays as long as value is out-of-range 01 interrupt is cleared once register is read (default) 10 comparator mode- like 00, but ignores hysteresis 11 same as 00 */ |
be8992c24
|
97 |
#define VIA686A_REG_TEMP_MODE 0x4b |
1da177e4c
|
98 |
/* We'll just assume that you want to set all 3 simultaneously: */ |
be8992c24
|
99 100 |
#define VIA686A_TEMP_MODE_MASK 0x3F #define VIA686A_TEMP_MODE_CONTINUOUS 0x00 |
1da177e4c
|
101 102 |
/* Conversions. Limit checking is only done on the TO_REG |
be8992c24
|
103 |
variants. |
1da177e4c
|
104 105 106 107 108 109 110 111 112 113 114 115 |
********* VOLTAGE CONVERSIONS (Bob Dougherty) ******** From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew): voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V in[i]=(data[i+2]*25.0+133)*voltagefactor[i]; That is: volts = (25*regVal+133)*factor regVal = (volts/factor-133)/25 |
be8992c24
|
116 |
(These conversions were contributed by Jonathan Teh Soon Yew |
1da177e4c
|
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 |
<j.teh@iname.com>) */ static inline u8 IN_TO_REG(long val, int inNum) { /* To avoid floating point, we multiply constants by 10 (100 for +12V). Rounding is done (120500 is actually 133000 - 12500). Remember that val is expressed in 0.001V/bit, which is why we divide by an additional 10000 (100000 for +12V): 1000 for val and 10 (100) for the constants. */ if (inNum <= 1) return (u8) SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255); else if (inNum == 2) return (u8) SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255); else if (inNum == 3) return (u8) SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255); else return (u8) SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255); } static inline long IN_FROM_REG(u8 val, int inNum) { /* To avoid floating point, we multiply constants by 10 (100 for +12V). We also multiply them by 1000 because we want 0.001V/bit for the output value. Rounding is done. */ if (inNum <= 1) return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024); else if (inNum == 2) return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737); else if (inNum == 3) return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108); else return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714); } /********* FAN RPM CONVERSIONS ********/ /* Higher register values = slower fans (the fan's strobe gates a counter). But this chip saturates back at 0, not at 255 like all the other chips. So, 0 means 0 RPM */ static inline u8 FAN_TO_REG(long rpm, int div) { if (rpm == 0) return 0; rpm = SENSORS_LIMIT(rpm, 1, 1000000); return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255); } #define FAN_FROM_REG(val,div) ((val)==0?0:(val)==255?0:1350000/((val)*(div))) /******** TEMP CONVERSIONS (Bob Dougherty) *********/ /* linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew) if(temp<169) |
6328c0e16
|
171 |
return double(temp)*0.427-32.08; |
1da177e4c
|
172 |
else if(temp>=169 && temp<=202) |
6328c0e16
|
173 |
return double(temp)*0.582-58.16; |
1da177e4c
|
174 |
else |
6328c0e16
|
175 |
return double(temp)*0.924-127.33; |
1da177e4c
|
176 |
|
be8992c24
|
177 178 179 |
A fifth-order polynomial fits the unofficial data (provided by Alex van Kaam <darkside@chello.nl>) a bit better. It also give more reasonable numbers on my machine (ie. they agree with what my BIOS tells me). |
1da177e4c
|
180 |
Here's the fifth-order fit to the 8-bit data: |
be8992c24
|
181 |
temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 - |
6328c0e16
|
182 |
2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0. |
1da177e4c
|
183 |
|
be8992c24
|
184 |
(2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for |
1da177e4c
|
185 |
finding my typos in this formula!) |
be8992c24
|
186 187 188 189 190 191 192 |
Alas, none of the elegant function-fit solutions will work because we aren't allowed to use floating point in the kernel and doing it with integers doesn't provide enough precision. So we'll do boring old look-up table stuff. The unofficial data (see below) have effectively 7-bit resolution (they are rounded to the nearest degree). I'm assuming that the transfer function of the device is monotonic and smooth, so a smooth function fit to the data will allow us to get better precision. |
1da177e4c
|
193 |
I used the 5th-order poly fit described above and solved for |
be8992c24
|
194 195 196 197 |
VIA register values 0-255. I *10 before rounding, so we get tenth-degree precision. (I could have done all 1024 values for our 10-bit readings, but the function is very linear in the useful range (0-80 deg C), so we'll just use linear interpolation for 10-bit readings.) So, tempLUT |
1da177e4c
|
198 |
is the temp at via register values 0-255: */ |
088341bd0
|
199 |
static const s16 tempLUT[] = |
be8992c24
|
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 |
{ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519, -503, -487, -471, -456, -442, -428, -414, -400, -387, -375, -362, -350, -339, -327, -316, -305, -295, -285, -275, -265, -255, -246, -237, -229, -220, -212, -204, -196, -188, -180, -173, -166, -159, -152, -145, -139, -132, -126, -120, -114, -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49, -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16, 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84, 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138, 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189, 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241, 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294, 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348, 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404, 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464, 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532, 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614, 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718, 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856, 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044, 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252, 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462 |
1da177e4c
|
222 |
}; |
be8992c24
|
223 |
/* the original LUT values from Alex van Kaam <darkside@chello.nl> |
1da177e4c
|
224 225 226 227 228 229 230 231 232 233 234 235 236 237 |
(for via register values 12-240): {-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31, -30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15, -15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3, -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, 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, 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, 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, 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, 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, 85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110}; Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed |
be8992c24
|
238 239 240 241 |
an extra term for a good fit to these inverse data!) and then solving for each temp value from -50 to 110 (the useable range for this chip). Here's the fit: viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4 |
1da177e4c
|
242 243 244 |
- 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01) Note that n=161: */ static const u8 viaLUT[] = |
be8992c24
|
245 246 247 248 249 250 251 252 253 254 255 256 257 |
{ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100, 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129, 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199, 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224, 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232, 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239, 239, 240 |
1da177e4c
|
258 259 260 261 262 263 264 |
}; /* Converting temps to (8-bit) hyst and over registers No interpolation here. The +50 is because the temps start at -50 */ static inline u8 TEMP_TO_REG(long val) { |
be8992c24
|
265 |
return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 : |
1da177e4c
|
266 267 268 269 |
(val < 0 ? val - 500 : val + 500) / 1000 + 50]; } /* for 8-bit temperature hyst and over registers */ |
088341bd0
|
270 |
#define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100) |
1da177e4c
|
271 272 273 274 275 276 277 278 279 280 281 282 283 |
/* for 10-bit temperature readings */ static inline long TEMP_FROM_REG10(u16 val) { u16 eightBits = val >> 2; u16 twoBits = val & 3; /* no interpolation for these */ if (twoBits == 0 || eightBits == 255) return TEMP_FROM_REG(eightBits); /* do some linear interpolation */ return (tempLUT[eightBits] * (4 - twoBits) + |
be8992c24
|
284 |
tempLUT[eightBits + 1] * twoBits) * 25; |
1da177e4c
|
285 |
} |
1da177e4c
|
286 287 |
#define DIV_FROM_REG(val) (1 << (val)) #define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1) |
ed6bafbf6
|
288 289 |
/* For each registered chip, we need to keep some data in memory. The structure is dynamically allocated. */ |
1da177e4c
|
290 |
struct via686a_data { |
2ec342e68
|
291 292 |
unsigned short addr; const char *name; |
1beeffe43
|
293 |
struct device *hwmon_dev; |
9a61bf630
|
294 |
struct mutex update_lock; |
1da177e4c
|
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 |
char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 in[5]; /* Register value */ u8 in_max[5]; /* Register value */ u8 in_min[5]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ u16 temp[3]; /* Register value 10 bit */ u8 temp_over[3]; /* Register value */ u8 temp_hyst[3]; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u16 alarms; /* Register encoding, combined */ }; static struct pci_dev *s_bridge; /* pointer to the (only) via686a */ |
2ec342e68
|
311 |
static int via686a_probe(struct platform_device *pdev); |
d05461289
|
312 |
static int __devexit via686a_remove(struct platform_device *pdev); |
1da177e4c
|
313 |
|
2ec342e68
|
314 |
static inline int via686a_read_value(struct via686a_data *data, u8 reg) |
1da177e4c
|
315 |
{ |
2ec342e68
|
316 |
return inb_p(data->addr + reg); |
1da177e4c
|
317 |
} |
2ec342e68
|
318 |
static inline void via686a_write_value(struct via686a_data *data, u8 reg, |
1da177e4c
|
319 320 |
u8 value) { |
2ec342e68
|
321 |
outb_p(value, data->addr + reg); |
1da177e4c
|
322 323 324 |
} static struct via686a_data *via686a_update_device(struct device *dev); |
2ec342e68
|
325 |
static void via686a_init_device(struct via686a_data *data); |
1da177e4c
|
326 327 328 329 |
/* following are the sysfs callback functions */ /* 7 voltage sensors */ |
1e71a5a2c
|
330 331 |
static ssize_t show_in(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
332 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
333 334 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
335 336 337 |
return sprintf(buf, "%ld ", IN_FROM_REG(data->in[nr], nr)); } |
1e71a5a2c
|
338 339 |
static ssize_t show_in_min(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
340 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
341 342 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
343 344 345 |
return sprintf(buf, "%ld ", IN_FROM_REG(data->in_min[nr], nr)); } |
1e71a5a2c
|
346 347 |
static ssize_t show_in_max(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
348 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
349 350 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
351 352 353 |
return sprintf(buf, "%ld ", IN_FROM_REG(data->in_max[nr], nr)); } |
1e71a5a2c
|
354 355 |
static ssize_t set_in_min(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
356 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
357 358 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
359 |
unsigned long val = simple_strtoul(buf, NULL, 10); |
9a61bf630
|
360 |
mutex_lock(&data->update_lock); |
be8992c24
|
361 |
data->in_min[nr] = IN_TO_REG(val, nr); |
2ec342e68
|
362 |
via686a_write_value(data, VIA686A_REG_IN_MIN(nr), |
1da177e4c
|
363 |
data->in_min[nr]); |
9a61bf630
|
364 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
365 366 |
return count; } |
1e71a5a2c
|
367 368 |
static ssize_t set_in_max(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
369 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
370 371 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
372 |
unsigned long val = simple_strtoul(buf, NULL, 10); |
9a61bf630
|
373 |
mutex_lock(&data->update_lock); |
be8992c24
|
374 |
data->in_max[nr] = IN_TO_REG(val, nr); |
2ec342e68
|
375 |
via686a_write_value(data, VIA686A_REG_IN_MAX(nr), |
1da177e4c
|
376 |
data->in_max[nr]); |
9a61bf630
|
377 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
378 379 380 |
return count; } #define show_in_offset(offset) \ |
1e71a5a2c
|
381 382 383 384 385 386 |
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ show_in, NULL, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ show_in_min, set_in_min, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ show_in_max, set_in_max, offset); |
1da177e4c
|
387 388 389 390 391 392 393 394 |
show_in_offset(0); show_in_offset(1); show_in_offset(2); show_in_offset(3); show_in_offset(4); /* 3 temperatures */ |
1e71a5a2c
|
395 396 |
static ssize_t show_temp(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
397 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
398 399 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
400 401 402 |
return sprintf(buf, "%ld ", TEMP_FROM_REG10(data->temp[nr])); } |
1e71a5a2c
|
403 404 |
static ssize_t show_temp_over(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
405 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
406 407 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
408 409 410 |
return sprintf(buf, "%ld ", TEMP_FROM_REG(data->temp_over[nr])); } |
1e71a5a2c
|
411 412 |
static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
413 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
414 415 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
416 417 418 |
return sprintf(buf, "%ld ", TEMP_FROM_REG(data->temp_hyst[nr])); } |
1e71a5a2c
|
419 420 |
static ssize_t set_temp_over(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
421 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
422 423 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
424 |
int val = simple_strtol(buf, NULL, 10); |
9a61bf630
|
425 |
mutex_lock(&data->update_lock); |
1da177e4c
|
426 |
data->temp_over[nr] = TEMP_TO_REG(val); |
2ec342e68
|
427 |
via686a_write_value(data, VIA686A_REG_TEMP_OVER[nr], |
563db2fe9
|
428 |
data->temp_over[nr]); |
9a61bf630
|
429 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
430 431 |
return count; } |
1e71a5a2c
|
432 433 |
static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
434 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
435 436 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
437 |
int val = simple_strtol(buf, NULL, 10); |
9a61bf630
|
438 |
mutex_lock(&data->update_lock); |
1da177e4c
|
439 |
data->temp_hyst[nr] = TEMP_TO_REG(val); |
2ec342e68
|
440 |
via686a_write_value(data, VIA686A_REG_TEMP_HYST[nr], |
563db2fe9
|
441 |
data->temp_hyst[nr]); |
9a61bf630
|
442 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
443 444 445 |
return count; } #define show_temp_offset(offset) \ |
1e71a5a2c
|
446 447 448 449 450 451 |
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ show_temp, NULL, offset - 1); \ static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ show_temp_over, set_temp_over, offset - 1); \ static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ show_temp_hyst, set_temp_hyst, offset - 1); |
1da177e4c
|
452 453 454 455 456 457 |
show_temp_offset(1); show_temp_offset(2); show_temp_offset(3); /* 2 Fans */ |
1e71a5a2c
|
458 459 |
static ssize_t show_fan(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
460 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
461 462 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
be8992c24
|
463 464 |
return sprintf(buf, "%d ", FAN_FROM_REG(data->fan[nr], |
1da177e4c
|
465 466 |
DIV_FROM_REG(data->fan_div[nr])) ); } |
1e71a5a2c
|
467 468 |
static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
469 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
470 471 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
be8992c24
|
472 473 |
return sprintf(buf, "%d ", |
1da177e4c
|
474 475 |
FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) ); } |
1e71a5a2c
|
476 477 |
static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, char *buf) { |
1da177e4c
|
478 |
struct via686a_data *data = via686a_update_device(dev); |
1e71a5a2c
|
479 480 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
be8992c24
|
481 482 |
return sprintf(buf, "%d ", DIV_FROM_REG(data->fan_div[nr]) ); |
1da177e4c
|
483 |
} |
1e71a5a2c
|
484 485 |
static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
486 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
487 488 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
489 |
int val = simple_strtol(buf, NULL, 10); |
9a61bf630
|
490 |
mutex_lock(&data->update_lock); |
1da177e4c
|
491 |
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
2ec342e68
|
492 |
via686a_write_value(data, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]); |
9a61bf630
|
493 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
494 495 |
return count; } |
1e71a5a2c
|
496 497 |
static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { |
2ec342e68
|
498 |
struct via686a_data *data = dev_get_drvdata(dev); |
1e71a5a2c
|
499 500 |
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; |
1da177e4c
|
501 502 |
int val = simple_strtol(buf, NULL, 10); int old; |
9a61bf630
|
503 |
mutex_lock(&data->update_lock); |
2ec342e68
|
504 |
old = via686a_read_value(data, VIA686A_REG_FANDIV); |
1da177e4c
|
505 506 |
data->fan_div[nr] = DIV_TO_REG(val); old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); |
2ec342e68
|
507 |
via686a_write_value(data, VIA686A_REG_FANDIV, old); |
9a61bf630
|
508 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
509 510 511 512 |
return count; } #define show_fan_offset(offset) \ |
1e71a5a2c
|
513 514 515 516 517 518 |
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ show_fan, NULL, offset - 1); \ static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ show_fan_min, set_fan_min, offset - 1); \ static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ show_fan_div, set_fan_div, offset - 1); |
1da177e4c
|
519 520 521 522 523 |
show_fan_offset(1); show_fan_offset(2); /* Alarms */ |
a5099cfc2
|
524 |
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) { |
1da177e4c
|
525 |
struct via686a_data *data = via686a_update_device(dev); |
68188ba7d
|
526 527 |
return sprintf(buf, "%u ", data->alarms); |
1da177e4c
|
528 |
} |
1d66c64c3
|
529 |
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4c
|
530 |
|
13ff05e9f
|
531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 |
static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) { int bitnr = to_sensor_dev_attr(attr)->index; struct via686a_data *data = via686a_update_device(dev); return sprintf(buf, "%u ", (data->alarms >> bitnr) & 1); } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 15); static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
2ec342e68
|
549 550 551 552 553 554 555 556 |
static ssize_t show_name(struct device *dev, struct device_attribute *devattr, char *buf) { struct via686a_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s ", data->name); } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
a5ebe668a
|
557 |
static struct attribute *via686a_attributes[] = { |
1e71a5a2c
|
558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 |
&sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in4_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in4_max.dev_attr.attr, |
13ff05e9f
|
573 574 575 576 577 |
&sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, |
1e71a5a2c
|
578 579 580 581 582 583 584 585 586 587 |
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, &sensor_dev_attr_temp3_max.dev_attr.attr, &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, |
13ff05e9f
|
588 589 590 |
&sensor_dev_attr_temp1_alarm.dev_attr.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
1e71a5a2c
|
591 592 593 594 595 596 597 |
&sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan1_div.dev_attr.attr, &sensor_dev_attr_fan2_div.dev_attr.attr, |
13ff05e9f
|
598 599 |
&sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
a5ebe668a
|
600 601 |
&dev_attr_alarms.attr, |
2ec342e68
|
602 |
&dev_attr_name.attr, |
a5ebe668a
|
603 604 605 606 607 608 |
NULL }; static const struct attribute_group via686a_group = { .attrs = via686a_attributes, }; |
2ec342e68
|
609 |
static struct platform_driver via686a_driver = { |
cdaf79349
|
610 |
.driver = { |
872188420
|
611 |
.owner = THIS_MODULE, |
cdaf79349
|
612 613 |
.name = "via686a", }, |
2ec342e68
|
614 615 |
.probe = via686a_probe, .remove = __devexit_p(via686a_remove), |
1da177e4c
|
616 617 618 619 |
}; /* This is called when the module is loaded */ |
2ec342e68
|
620 |
static int __devinit via686a_probe(struct platform_device *pdev) |
1da177e4c
|
621 |
{ |
1da177e4c
|
622 |
struct via686a_data *data; |
2ec342e68
|
623 624 |
struct resource *res; int err; |
1da177e4c
|
625 626 |
/* Reserve the ISA region */ |
2ec342e68
|
627 628 |
res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!request_region(res->start, VIA686A_EXTENT, |
cdaf79349
|
629 |
via686a_driver.driver.name)) { |
2ec342e68
|
630 631 632 |
dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use! ", (unsigned long)res->start, (unsigned long)res->end); |
1da177e4c
|
633 634 |
return -ENODEV; } |
ba9c2e8d1
|
635 |
if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) { |
1da177e4c
|
636 |
err = -ENOMEM; |
943b0830c
|
637 |
goto exit_release; |
1da177e4c
|
638 |
} |
1da177e4c
|
639 |
|
2ec342e68
|
640 641 642 |
platform_set_drvdata(pdev, data); data->addr = res->start; data->name = "via686a"; |
9a61bf630
|
643 |
mutex_init(&data->update_lock); |
be8992c24
|
644 |
|
1da177e4c
|
645 |
/* Initialize the VIA686A chip */ |
2ec342e68
|
646 |
via686a_init_device(data); |
1da177e4c
|
647 648 |
/* Register sysfs hooks */ |
2ec342e68
|
649 650 |
if ((err = sysfs_create_group(&pdev->dev.kobj, &via686a_group))) goto exit_free; |
a5ebe668a
|
651 |
|
1beeffe43
|
652 653 654 |
data->hwmon_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); |
a5ebe668a
|
655 |
goto exit_remove_files; |
943b0830c
|
656 |
} |
1da177e4c
|
657 |
return 0; |
a5ebe668a
|
658 |
exit_remove_files: |
2ec342e68
|
659 |
sysfs_remove_group(&pdev->dev.kobj, &via686a_group); |
943b0830c
|
660 |
exit_free: |
1da177e4c
|
661 |
kfree(data); |
943b0830c
|
662 |
exit_release: |
2ec342e68
|
663 |
release_region(res->start, VIA686A_EXTENT); |
1da177e4c
|
664 665 |
return err; } |
2ec342e68
|
666 |
static int __devexit via686a_remove(struct platform_device *pdev) |
1da177e4c
|
667 |
{ |
2ec342e68
|
668 |
struct via686a_data *data = platform_get_drvdata(pdev); |
1da177e4c
|
669 |
|
1beeffe43
|
670 |
hwmon_device_unregister(data->hwmon_dev); |
2ec342e68
|
671 |
sysfs_remove_group(&pdev->dev.kobj, &via686a_group); |
943b0830c
|
672 |
|
2ec342e68
|
673 674 |
release_region(data->addr, VIA686A_EXTENT); platform_set_drvdata(pdev, NULL); |
943b0830c
|
675 |
kfree(data); |
1da177e4c
|
676 677 678 |
return 0; } |
f790674d3
|
679 680 681 682 683 684 |
static void via686a_update_fan_div(struct via686a_data *data) { int reg = via686a_read_value(data, VIA686A_REG_FANDIV); data->fan_div[0] = (reg >> 4) & 0x03; data->fan_div[1] = reg >> 6; } |
2ec342e68
|
685 |
static void __devinit via686a_init_device(struct via686a_data *data) |
1da177e4c
|
686 687 688 689 |
{ u8 reg; /* Start monitoring */ |
2ec342e68
|
690 691 |
reg = via686a_read_value(data, VIA686A_REG_CONFIG); via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F); |
1da177e4c
|
692 693 |
/* Configure temp interrupt mode for continuous-interrupt operation */ |
2ec342e68
|
694 695 |
reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE); via686a_write_value(data, VIA686A_REG_TEMP_MODE, |
58fe0809c
|
696 697 |
(reg & ~VIA686A_TEMP_MODE_MASK) | VIA686A_TEMP_MODE_CONTINUOUS); |
f790674d3
|
698 699 700 |
/* Pre-read fan clock divisor values */ via686a_update_fan_div(data); |
1da177e4c
|
701 702 703 704 |
} static struct via686a_data *via686a_update_device(struct device *dev) { |
2ec342e68
|
705 |
struct via686a_data *data = dev_get_drvdata(dev); |
1da177e4c
|
706 |
int i; |
9a61bf630
|
707 |
mutex_lock(&data->update_lock); |
1da177e4c
|
708 709 710 711 712 |
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { for (i = 0; i <= 4; i++) { data->in[i] = |
2ec342e68
|
713 714 |
via686a_read_value(data, VIA686A_REG_IN(i)); data->in_min[i] = via686a_read_value(data, |
1da177e4c
|
715 716 717 |
VIA686A_REG_IN_MIN (i)); data->in_max[i] = |
2ec342e68
|
718 |
via686a_read_value(data, VIA686A_REG_IN_MAX(i)); |
1da177e4c
|
719 720 721 |
} for (i = 1; i <= 2; i++) { data->fan[i - 1] = |
2ec342e68
|
722 723 |
via686a_read_value(data, VIA686A_REG_FAN(i)); data->fan_min[i - 1] = via686a_read_value(data, |
1da177e4c
|
724 725 726 |
VIA686A_REG_FAN_MIN(i)); } for (i = 0; i <= 2; i++) { |
2ec342e68
|
727 |
data->temp[i] = via686a_read_value(data, |
563db2fe9
|
728 |
VIA686A_REG_TEMP[i]) << 2; |
1da177e4c
|
729 |
data->temp_over[i] = |
2ec342e68
|
730 |
via686a_read_value(data, |
563db2fe9
|
731 |
VIA686A_REG_TEMP_OVER[i]); |
1da177e4c
|
732 |
data->temp_hyst[i] = |
2ec342e68
|
733 |
via686a_read_value(data, |
563db2fe9
|
734 |
VIA686A_REG_TEMP_HYST[i]); |
1da177e4c
|
735 |
} |
be8992c24
|
736 |
/* add in lower 2 bits |
1da177e4c
|
737 738 739 740 |
temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 */ |
2ec342e68
|
741 |
data->temp[0] |= (via686a_read_value(data, |
1da177e4c
|
742 743 744 |
VIA686A_REG_TEMP_LOW1) & 0xc0) >> 6; data->temp[1] |= |
2ec342e68
|
745 |
(via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & |
1da177e4c
|
746 747 |
0x30) >> 4; data->temp[2] |= |
2ec342e68
|
748 |
(via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & |
1da177e4c
|
749 |
0xc0) >> 6; |
f790674d3
|
750 |
via686a_update_fan_div(data); |
1da177e4c
|
751 |
data->alarms = |
2ec342e68
|
752 |
via686a_read_value(data, |
1da177e4c
|
753 |
VIA686A_REG_ALARM1) | |
2ec342e68
|
754 |
(via686a_read_value(data, VIA686A_REG_ALARM2) << 8); |
1da177e4c
|
755 756 757 |
data->last_updated = jiffies; data->valid = 1; } |
9a61bf630
|
758 |
mutex_unlock(&data->update_lock); |
1da177e4c
|
759 760 761 |
return data; } |
3dd3a1563
|
762 |
static const struct pci_device_id via686a_pci_ids[] = { |
be8992c24
|
763 764 |
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, { 0, } |
1da177e4c
|
765 766 767 |
}; MODULE_DEVICE_TABLE(pci, via686a_pci_ids); |
2ec342e68
|
768 769 770 771 772 773 774 775 776 |
static int __devinit via686a_device_add(unsigned short address) { struct resource res = { .start = address, .end = address + VIA686A_EXTENT - 1, .name = "via686a", .flags = IORESOURCE_IO, }; int err; |
b9acb64a3
|
777 778 779 |
err = acpi_check_resource_conflict(&res); if (err) goto exit; |
2ec342e68
|
780 781 782 |
pdev = platform_device_alloc("via686a", address); if (!pdev) { err = -ENOMEM; |
774f7827e
|
783 784 |
pr_err("Device allocation failed "); |
2ec342e68
|
785 786 787 788 789 |
goto exit; } err = platform_device_add_resources(pdev, &res, 1); if (err) { |
774f7827e
|
790 791 |
pr_err("Device resource addition failed (%d) ", err); |
2ec342e68
|
792 793 794 795 796 |
goto exit_device_put; } err = platform_device_add(pdev); if (err) { |
774f7827e
|
797 798 |
pr_err("Device addition failed (%d) ", err); |
2ec342e68
|
799 800 801 802 803 804 805 806 807 808 |
goto exit_device_put; } return 0; exit_device_put: platform_device_put(pdev); exit: return err; } |
1da177e4c
|
809 |
static int __devinit via686a_pci_probe(struct pci_dev *dev, |
be8992c24
|
810 |
const struct pci_device_id *id) |
1da177e4c
|
811 |
{ |
2ec342e68
|
812 |
u16 address, val; |
be8992c24
|
813 |
|
2ec342e68
|
814 815 816 817 818 819 820 821 |
if (force_addr) { address = force_addr & ~(VIA686A_EXTENT - 1); dev_warn(&dev->dev, "Forcing ISA address 0x%x ", address); if (PCIBIOS_SUCCESSFUL != pci_write_config_word(dev, VIA686A_BASE_REG, address | 1)) return -ENODEV; } |
be8992c24
|
822 823 824 |
if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VIA686A_BASE_REG, &val)) return -ENODEV; |
2d8672c5a
|
825 |
address = val & ~(VIA686A_EXTENT - 1); |
2ec342e68
|
826 |
if (address == 0) { |
be8992c24
|
827 828 829 830 831 |
dev_err(&dev->dev, "base address not set - upgrade BIOS " "or use force_addr=0xaddr "); return -ENODEV; } |
be8992c24
|
832 |
|
2ec342e68
|
833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 |
if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VIA686A_ENABLE_REG, &val)) return -ENODEV; if (!(val & 0x0001)) { if (!force_addr) { dev_warn(&dev->dev, "Sensors disabled, enable " "with force_addr=0x%x ", address); return -ENODEV; } dev_warn(&dev->dev, "Enabling sensors "); if (PCIBIOS_SUCCESSFUL != pci_write_config_word(dev, VIA686A_ENABLE_REG, val | 0x0001)) return -ENODEV; |
1da177e4c
|
850 |
} |
2ec342e68
|
851 852 853 854 855 856 |
if (platform_driver_register(&via686a_driver)) goto exit; /* Sets global pdev as a side effect */ if (via686a_device_add(address)) goto exit_unregister; |
1da177e4c
|
857 858 859 860 |
/* Always return failure here. This is to allow other drivers to bind * to this pci device. We don't really want to have control over the * pci device, we only wanted to read as few register values from it. */ |
2ec342e68
|
861 862 863 864 865 866 |
s_bridge = pci_dev_get(dev); return -ENODEV; exit_unregister: platform_driver_unregister(&via686a_driver); exit: |
1da177e4c
|
867 868 869 870 |
return -ENODEV; } static struct pci_driver via686a_pci_driver = { |
be8992c24
|
871 872 873 |
.name = "via686a", .id_table = via686a_pci_ids, .probe = via686a_pci_probe, |
1da177e4c
|
874 875 876 877 |
}; static int __init sm_via686a_init(void) { |
be8992c24
|
878 |
return pci_register_driver(&via686a_pci_driver); |
1da177e4c
|
879 880 881 882 883 884 |
} static void __exit sm_via686a_exit(void) { pci_unregister_driver(&via686a_pci_driver); if (s_bridge != NULL) { |
2ec342e68
|
885 886 |
platform_device_unregister(pdev); platform_driver_unregister(&via686a_driver); |
1da177e4c
|
887 888 889 890 |
pci_dev_put(s_bridge); s_bridge = NULL; } } |
96de0e252
|
891 |
MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
be8992c24
|
892 893 |
"Mark Studebaker <mdsxyz123@yahoo.com> " "and Bob Dougherty <bobd@stanford.edu>"); |
1da177e4c
|
894 895 896 897 898 |
MODULE_DESCRIPTION("VIA 686A Sensor device"); MODULE_LICENSE("GPL"); module_init(sm_via686a_init); module_exit(sm_via686a_exit); |