projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
hwmon: (pc87360) Fix: do not use assignment in if condition
[linux-2.6-block.git] / drivers / hwmon / via686a.c
CommitLineData
1da177e4
LT		 1/*
2 via686a.c - Part of lm_sensors, Linux kernel modules
6328c0e1 3 for hardware monitoring
be8992c2 4
1da177e4 5 Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
96de0e25 6 Kyösti Mälkki <kmalkki@cc.hut.fi>,
1da177e4
LT		 7 Mark Studebaker <mdsxyz123@yahoo.com>,
8 and Bob Dougherty <bobd@stanford.edu>
be8992c2 9 (Some conversion-factor data were contributed by Jonathan Teh Soon Yew
1da177e4
LT		 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
774f7827
JP		 33#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
34
1da177e4
LT		 35#include <linux/module.h>
36#include <linux/slab.h>
37#include <linux/pci.h>
1da177e4 38#include <linux/jiffies.h>
2ec342e6 39#include <linux/platform_device.h>
943b0830 40#include <linux/hwmon.h>
1e71a5a2 41#include <linux/hwmon-sysfs.h>
943b0830 42#include <linux/err.h>
1da177e4 43#include <linux/init.h>
9a61bf63 44#include <linux/mutex.h>
a5ebe668 45#include <linux/sysfs.h>
b9acb64a 46#include <linux/acpi.h>
6055fae8 47#include <linux/io.h>
1da177e4
LT		 48
49
50/* If force_addr is set to anything different from 0, we forcibly enable
51 the device at the given address. */
02002963 52static unsigned short force_addr;
1da177e4
LT		 53module_param(force_addr, ushort, 0);
54MODULE_PARM_DESC(force_addr,
55 "Initialize the base address of the sensors");
56
2ec342e6 57static struct platform_device *pdev;
1da177e4
LT		 58
59/*
60 The Via 686a southbridge has a LM78-like chip integrated on the same IC.
61 This driver is a customized copy of lm78.c
62*/
63
64/* Many VIA686A constants specified below */
65
66/* Length of ISA address segment */
be8992c2
JD		 67#define VIA686A_EXTENT 0x80
68#define VIA686A_BASE_REG 0x70
69#define VIA686A_ENABLE_REG 0x74
1da177e4
LT		 70
71/* The VIA686A registers */
72/* ins numbered 0-4 */
be8992c2
JD		 73#define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2))
74#define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2))
75#define VIA686A_REG_IN(nr) (0x22 + (nr))
1da177e4
LT		 76
77/* fans numbered 1-2 */
be8992c2
JD		 78#define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr))
79#define VIA686A_REG_FAN(nr) (0x28 + (nr))
1da177e4 80
1da177e4 81/* temps numbered 1-3 */
563db2fe
JD		 82static const u8 VIA686A_REG_TEMP[] = { 0x20, 0x21, 0x1f };
83static const u8 VIA686A_REG_TEMP_OVER[] = { 0x39, 0x3d, 0x1d };
84static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e };
be8992c2
JD		 85/* bits 7-6 */
86#define VIA686A_REG_TEMP_LOW1 0x4b
87/* 2 = bits 5-4, 3 = bits 7-6 */
88#define VIA686A_REG_TEMP_LOW23 0x49
89
90#define VIA686A_REG_ALARM1 0x41
91#define VIA686A_REG_ALARM2 0x42
92#define VIA686A_REG_FANDIV 0x47
93#define VIA686A_REG_CONFIG 0x40
94/* The following register sets temp interrupt mode (bits 1-0 for temp1,
1da177e4
LT		 95 3-2 for temp2, 5-4 for temp3). Modes are:
96 00 interrupt stays as long as value is out-of-range
97 01 interrupt is cleared once register is read (default)
98 10 comparator mode- like 00, but ignores hysteresis
99 11 same as 00 */
be8992c2 100#define VIA686A_REG_TEMP_MODE 0x4b
1da177e4 101/* We'll just assume that you want to set all 3 simultaneously: */
be8992c2
JD		 102#define VIA686A_TEMP_MODE_MASK 0x3F
103#define VIA686A_TEMP_MODE_CONTINUOUS 0x00
1da177e4
LT		 104
105/* Conversions. Limit checking is only done on the TO_REG
be8992c2 106 variants.
1da177e4
LT		 107
108********* VOLTAGE CONVERSIONS (Bob Dougherty) ********
109 From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew):
110 voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp
111 voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V
112 voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V
113 voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V
114 voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V
115 in[i]=(data[i+2]*25.0+133)*voltagefactor[i];
116 That is:
117 volts = (25*regVal+133)*factor
118 regVal = (volts/factor-133)/25
be8992c2 119 (These conversions were contributed by Jonathan Teh Soon Yew
1da177e4
LT		 120 <j.teh@iname.com>) */
121static inline u8 IN_TO_REG(long val, int inNum)
122{
123 /* To avoid floating point, we multiply constants by 10 (100 for +12V).
124 Rounding is done (120500 is actually 133000 - 12500).
125 Remember that val is expressed in 0.001V/bit, which is why we divide
126 by an additional 10000 (100000 for +12V): 1000 for val and 10 (100)
127 for the constants. */
128 if (inNum <= 1)
129 return (u8)
130 SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255);
131 else if (inNum == 2)
132 return (u8)
133 SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255);
134 else if (inNum == 3)
135 return (u8)
136 SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255);
137 else
138 return (u8)
139 SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255);
140}
141
142static inline long IN_FROM_REG(u8 val, int inNum)
143{
144 /* To avoid floating point, we multiply constants by 10 (100 for +12V).
145 We also multiply them by 1000 because we want 0.001V/bit for the
146 output value. Rounding is done. */
147 if (inNum <= 1)
148 return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024);
149 else if (inNum == 2)
150 return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737);
151 else if (inNum == 3)
152 return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108);
153 else
154 return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714);
155}
156
157/********* FAN RPM CONVERSIONS ********/
158/* Higher register values = slower fans (the fan's strobe gates a counter).
159 But this chip saturates back at 0, not at 255 like all the other chips.
160 So, 0 means 0 RPM */
161static inline u8 FAN_TO_REG(long rpm, int div)
162{
163 if (rpm == 0)
164 return 0;
165 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
166 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255);
167}
168
169#define FAN_FROM_REG(val,div) ((val)==0?0:(val)==255?0:1350000/((val)*(div)))
170
171/******** TEMP CONVERSIONS (Bob Dougherty) *********/
172/* linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew)
173 if(temp<169)
6328c0e1 174 return double(temp)*0.427-32.08;
1da177e4 175 else if(temp>=169 && temp<=202)
6328c0e1 176 return double(temp)*0.582-58.16;
1da177e4 177 else
6328c0e1 178 return double(temp)*0.924-127.33;
1da177e4 179
be8992c2
JD		 180 A fifth-order polynomial fits the unofficial data (provided by Alex van
181 Kaam <darkside@chello.nl>) a bit better. It also give more reasonable
182 numbers on my machine (ie. they agree with what my BIOS tells me).
1da177e4 183 Here's the fifth-order fit to the 8-bit data:
be8992c2 184 temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 -
6328c0e1 185 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0.
1da177e4 186
be8992c2 187 (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for
1da177e4
LT		 188 finding my typos in this formula!)
189
be8992c2
JD		 190 Alas, none of the elegant function-fit solutions will work because we
191 aren't allowed to use floating point in the kernel and doing it with
192 integers doesn't provide enough precision. So we'll do boring old
193 look-up table stuff. The unofficial data (see below) have effectively
194 7-bit resolution (they are rounded to the nearest degree). I'm assuming
195 that the transfer function of the device is monotonic and smooth, so a
196 smooth function fit to the data will allow us to get better precision.
1da177e4 197 I used the 5th-order poly fit described above and solved for
be8992c2
JD		 198 VIA register values 0-255. I *10 before rounding, so we get tenth-degree
199 precision. (I could have done all 1024 values for our 10-bit readings,
200 but the function is very linear in the useful range (0-80 deg C), so
201 we'll just use linear interpolation for 10-bit readings.) So, tempLUT
1da177e4 202 is the temp at via register values 0-255: */
088341bd 203static const s16 tempLUT[] =
be8992c2
JD		 204{ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
205 -503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
206 -362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
207 -255, -246, -237, -229, -220, -212, -204, -196, -188, -180,
208 -173, -166, -159, -152, -145, -139, -132, -126, -120, -114,
209 -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49,
210 -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16,
211 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84,
212 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138,
213 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189,
214 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241,
215 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294,
216 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348,
217 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404,
218 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464,
219 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532,
220 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614,
221 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718,
222 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856,
223 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044,
224 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252,
225 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462
1da177e4
LT		 226};
227
be8992c2 228/* the original LUT values from Alex van Kaam <darkside@chello.nl>
1da177e4
LT		 229 (for via register values 12-240):
230{-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31,
231-30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15,
232-15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3,
233-3,-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,
23412,12,13,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,21,21,21,22,22,
23522,23,23,24,24,25,25,26,26,26,27,27,27,28,28,29,29,30,30,30,31,31,32,32,33,
23633,34,34,35,35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,45,
23745,46,46,47,48,48,49,49,50,51,51,52,52,53,53,54,55,55,56,57,57,58,59,59,60,
23861,62,62,63,64,65,66,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83,84,
23985,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110};
240
241
242 Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed
be8992c2
JD		 243 an extra term for a good fit to these inverse data!) and then
244 solving for each temp value from -50 to 110 (the useable range for
245 this chip). Here's the fit:
246 viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4
1da177e4
LT		 247 - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01)
248 Note that n=161: */
249static const u8 viaLUT[] =
be8992c2
JD		 250{ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23,
251 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40,
252 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66,
253 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100,
254 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129,
255 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156,
256 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180,
257 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199,
258 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213,
259 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224,
260 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232,
261 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239,
262 239, 240
1da177e4
LT		 263};
264
265/* Converting temps to (8-bit) hyst and over registers
266 No interpolation here.
267 The +50 is because the temps start at -50 */
268static inline u8 TEMP_TO_REG(long val)
269{
be8992c2 270 return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 :
1da177e4
LT		 271 (val < 0 ? val - 500 : val + 500) / 1000 + 50];
272}
273
274/* for 8-bit temperature hyst and over registers */
088341bd 275#define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100)
1da177e4
LT		 276
277/* for 10-bit temperature readings */
278static inline long TEMP_FROM_REG10(u16 val)
279{
280 u16 eightBits = val >> 2;
281 u16 twoBits = val & 3;
282
283 /* no interpolation for these */
284 if (twoBits == 0 || eightBits == 255)
285 return TEMP_FROM_REG(eightBits);
286
287 /* do some linear interpolation */
288 return (tempLUT[eightBits] * (4 - twoBits) +
be8992c2 289 tempLUT[eightBits + 1] * twoBits) * 25;
1da177e4
LT		 290}
291
1da177e4
LT		 292#define DIV_FROM_REG(val) (1 << (val))
293#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
294
ed6bafbf
JD		 295/* For each registered chip, we need to keep some data in memory.
296 The structure is dynamically allocated. */
1da177e4 297struct via686a_data {
2ec342e6
JD		 298 unsigned short addr;
299 const char *name;
1beeffe4 300 struct device *hwmon_dev;
9a61bf63 301 struct mutex update_lock;
1da177e4
LT		 302 char valid; /* !=0 if following fields are valid */
303 unsigned long last_updated; /* In jiffies */
304
305 u8 in[5]; /* Register value */
306 u8 in_max[5]; /* Register value */
307 u8 in_min[5]; /* Register value */
308 u8 fan[2]; /* Register value */
309 u8 fan_min[2]; /* Register value */
310 u16 temp[3]; /* Register value 10 bit */
311 u8 temp_over[3]; /* Register value */
312 u8 temp_hyst[3]; /* Register value */
313 u8 fan_div[2]; /* Register encoding, shifted right */
314 u16 alarms; /* Register encoding, combined */
315};
316
317static struct pci_dev *s_bridge; /* pointer to the (only) via686a */
318
2ec342e6 319static int via686a_probe(struct platform_device *pdev);
d0546128 320static int __devexit via686a_remove(struct platform_device *pdev);
1da177e4 321
2ec342e6 322static inline int via686a_read_value(struct via686a_data *data, u8 reg)
1da177e4 323{
2ec342e6 324 return inb_p(data->addr + reg);
1da177e4
LT		 325}
326
2ec342e6 327static inline void via686a_write_value(struct via686a_data *data, u8 reg,
1da177e4
LT		 328 u8 value)
329{
2ec342e6 330 outb_p(value, data->addr + reg);
1da177e4
LT		 331}
332
333static struct via686a_data *via686a_update_device(struct device *dev);
2ec342e6 334static void via686a_init_device(struct via686a_data *data);
1da177e4
LT		 335
336/* following are the sysfs callback functions */
337
338/* 7 voltage sensors */
1e71a5a2
JD		 339static ssize_t show_in(struct device *dev, struct device_attribute *da,
340 char *buf) {
1da177e4 341 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 342 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
343 int nr = attr->index;
1da177e4
LT		 344 return sprintf(buf, "%ld\n", IN_FROM_REG(data->in[nr], nr));
345}
346
1e71a5a2
JD		 347static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
348 char *buf) {
1da177e4 349 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 350 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
351 int nr = attr->index;
1da177e4
LT		 352 return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_min[nr], nr));
353}
354
1e71a5a2
JD		 355static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
356 char *buf) {
1da177e4 357 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 358 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
359 int nr = attr->index;
1da177e4
LT		 360 return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr));
361}
362
1e71a5a2
JD		 363static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
364 const char *buf, size_t count) {
2ec342e6 365 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 366 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
367 int nr = attr->index;
1da177e4
LT		 368 unsigned long val = simple_strtoul(buf, NULL, 10);
369
9a61bf63 370 mutex_lock(&data->update_lock);
be8992c2 371 data->in_min[nr] = IN_TO_REG(val, nr);
2ec342e6 372 via686a_write_value(data, VIA686A_REG_IN_MIN(nr),
1da177e4 373 data->in_min[nr]);
9a61bf63 374 mutex_unlock(&data->update_lock);
1da177e4
LT		 375 return count;
376}
1e71a5a2
JD		 377static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
378 const char *buf, size_t count) {
2ec342e6 379 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 380 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
381 int nr = attr->index;
1da177e4
LT		 382 unsigned long val = simple_strtoul(buf, NULL, 10);
383
9a61bf63 384 mutex_lock(&data->update_lock);
be8992c2 385 data->in_max[nr] = IN_TO_REG(val, nr);
2ec342e6 386 via686a_write_value(data, VIA686A_REG_IN_MAX(nr),
1da177e4 387 data->in_max[nr]);
9a61bf63 388 mutex_unlock(&data->update_lock);
1da177e4
LT		 389 return count;
390}
391#define show_in_offset(offset) \
1e71a5a2
JD		 392static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
393 show_in, NULL, offset); \
394static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
395 show_in_min, set_in_min, offset); \
396static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
397 show_in_max, set_in_max, offset);
1da177e4
LT		 398
399show_in_offset(0);
400show_in_offset(1);
401show_in_offset(2);
402show_in_offset(3);
403show_in_offset(4);
404
405/* 3 temperatures */
1e71a5a2
JD		 406static ssize_t show_temp(struct device *dev, struct device_attribute *da,
407 char *buf) {
1da177e4 408 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 409 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
410 int nr = attr->index;
1da177e4
LT		 411 return sprintf(buf, "%ld\n", TEMP_FROM_REG10(data->temp[nr]));
412}
1e71a5a2
JD		 413static ssize_t show_temp_over(struct device *dev, struct device_attribute *da,
414 char *buf) {
1da177e4 415 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 416 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
417 int nr = attr->index;
1da177e4
LT		 418 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_over[nr]));
419}
1e71a5a2
JD		 420static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *da,
421 char *buf) {
1da177e4 422 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 423 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
424 int nr = attr->index;
1da177e4
LT		 425 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr]));
426}
1e71a5a2
JD		 427static ssize_t set_temp_over(struct device *dev, struct device_attribute *da,
428 const char *buf, size_t count) {
2ec342e6 429 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 430 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
431 int nr = attr->index;
1da177e4
LT		 432 int val = simple_strtol(buf, NULL, 10);
433
9a61bf63 434 mutex_lock(&data->update_lock);
1da177e4 435 data->temp_over[nr] = TEMP_TO_REG(val);
2ec342e6 436 via686a_write_value(data, VIA686A_REG_TEMP_OVER[nr],
563db2fe 437 data->temp_over[nr]);
9a61bf63 438 mutex_unlock(&data->update_lock);
1da177e4
LT		 439 return count;
440}
1e71a5a2
JD		 441static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da,
442 const char *buf, size_t count) {
2ec342e6 443 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 444 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
445 int nr = attr->index;
1da177e4
LT		 446 int val = simple_strtol(buf, NULL, 10);
447
9a61bf63 448 mutex_lock(&data->update_lock);
1da177e4 449 data->temp_hyst[nr] = TEMP_TO_REG(val);
2ec342e6 450 via686a_write_value(data, VIA686A_REG_TEMP_HYST[nr],
563db2fe 451 data->temp_hyst[nr]);
9a61bf63 452 mutex_unlock(&data->update_lock);
1da177e4
LT		 453 return count;
454}
455#define show_temp_offset(offset) \
1e71a5a2
JD		 456static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
457 show_temp, NULL, offset - 1); \
458static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
459 show_temp_over, set_temp_over, offset - 1); \
460static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
461 show_temp_hyst, set_temp_hyst, offset - 1);
1da177e4
LT		 462
463show_temp_offset(1);
464show_temp_offset(2);
465show_temp_offset(3);
466
467/* 2 Fans */
1e71a5a2
JD		 468static ssize_t show_fan(struct device *dev, struct device_attribute *da,
469 char *buf) {
1da177e4 470 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 471 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
472 int nr = attr->index;
be8992c2 473 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
1da177e4
LT		 474 DIV_FROM_REG(data->fan_div[nr])) );
475}
1e71a5a2
JD		 476static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
477 char *buf) {
1da177e4 478 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 479 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
480 int nr = attr->index;
be8992c2 481 return sprintf(buf, "%d\n",
1da177e4
LT		 482 FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) );
483}
1e71a5a2
JD		 484static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
485 char *buf) {
1da177e4 486 struct via686a_data *data = via686a_update_device(dev);
1e71a5a2
JD		 487 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
488 int nr = attr->index;
be8992c2 489 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
1da177e4 490}
1e71a5a2
JD		 491static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
492 const char *buf, size_t count) {
2ec342e6 493 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 494 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
495 int nr = attr->index;
1da177e4
LT		 496 int val = simple_strtol(buf, NULL, 10);
497
9a61bf63 498 mutex_lock(&data->update_lock);
1da177e4 499 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
2ec342e6 500 via686a_write_value(data, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]);
9a61bf63 501 mutex_unlock(&data->update_lock);
1da177e4
LT		 502 return count;
503}
1e71a5a2
JD		 504static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
505 const char *buf, size_t count) {
2ec342e6 506 struct via686a_data *data = dev_get_drvdata(dev);
1e71a5a2
JD		 507 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
508 int nr = attr->index;
1da177e4
LT		 509 int val = simple_strtol(buf, NULL, 10);
510 int old;
511
9a61bf63 512 mutex_lock(&data->update_lock);
2ec342e6 513 old = via686a_read_value(data, VIA686A_REG_FANDIV);
1da177e4
LT		 514 data->fan_div[nr] = DIV_TO_REG(val);
515 old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4);
2ec342e6 516 via686a_write_value(data, VIA686A_REG_FANDIV, old);
9a61bf63 517 mutex_unlock(&data->update_lock);
1da177e4
LT		 518 return count;
519}
520
521#define show_fan_offset(offset) \
1e71a5a2
JD		 522static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
523 show_fan, NULL, offset - 1); \
524static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
525 show_fan_min, set_fan_min, offset - 1); \
526static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
527 show_fan_div, set_fan_div, offset - 1);
1da177e4
LT		 528
529show_fan_offset(1);
530show_fan_offset(2);
531
532/* Alarms */
a5099cfc 533static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) {
1da177e4 534 struct via686a_data *data = via686a_update_device(dev);
68188ba7 535 return sprintf(buf, "%u\n", data->alarms);
1da177e4 536}
1d66c64c 537static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1da177e4 538
13ff05e9
JD		 539static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
540 char *buf)
541{
542 int bitnr = to_sensor_dev_attr(attr)->index;
543 struct via686a_data *data = via686a_update_device(dev);
544 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
545}
546static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
547static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
548static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
549static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
550static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
551static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
552static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11);
553static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 15);
554static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
555static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
556
2ec342e6
JD		 557static ssize_t show_name(struct device *dev, struct device_attribute
558 *devattr, char *buf)
559{
560 struct via686a_data *data = dev_get_drvdata(dev);
561 return sprintf(buf, "%s\n", data->name);
562}
563static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
564
a5ebe668 565static struct attribute *via686a_attributes[] = {
1e71a5a2
JD		 566 &sensor_dev_attr_in0_input.dev_attr.attr,
567 &sensor_dev_attr_in1_input.dev_attr.attr,
568 &sensor_dev_attr_in2_input.dev_attr.attr,
569 &sensor_dev_attr_in3_input.dev_attr.attr,
570 &sensor_dev_attr_in4_input.dev_attr.attr,
571 &sensor_dev_attr_in0_min.dev_attr.attr,
572 &sensor_dev_attr_in1_min.dev_attr.attr,
573 &sensor_dev_attr_in2_min.dev_attr.attr,
574 &sensor_dev_attr_in3_min.dev_attr.attr,
575 &sensor_dev_attr_in4_min.dev_attr.attr,
576 &sensor_dev_attr_in0_max.dev_attr.attr,
577 &sensor_dev_attr_in1_max.dev_attr.attr,
578 &sensor_dev_attr_in2_max.dev_attr.attr,
579 &sensor_dev_attr_in3_max.dev_attr.attr,
580 &sensor_dev_attr_in4_max.dev_attr.attr,
13ff05e9
JD		 581 &sensor_dev_attr_in0_alarm.dev_attr.attr,
582 &sensor_dev_attr_in1_alarm.dev_attr.attr,
583 &sensor_dev_attr_in2_alarm.dev_attr.attr,
584 &sensor_dev_attr_in3_alarm.dev_attr.attr,
585 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1e71a5a2
JD		 586
587 &sensor_dev_attr_temp1_input.dev_attr.attr,
588 &sensor_dev_attr_temp2_input.dev_attr.attr,
589 &sensor_dev_attr_temp3_input.dev_attr.attr,
590 &sensor_dev_attr_temp1_max.dev_attr.attr,
591 &sensor_dev_attr_temp2_max.dev_attr.attr,
592 &sensor_dev_attr_temp3_max.dev_attr.attr,
593 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
594 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
595 &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
13ff05e9
JD		 596 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
597 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
598 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1e71a5a2
JD		 599
600 &sensor_dev_attr_fan1_input.dev_attr.attr,
601 &sensor_dev_attr_fan2_input.dev_attr.attr,
602 &sensor_dev_attr_fan1_min.dev_attr.attr,
603 &sensor_dev_attr_fan2_min.dev_attr.attr,
604 &sensor_dev_attr_fan1_div.dev_attr.attr,
605 &sensor_dev_attr_fan2_div.dev_attr.attr,
13ff05e9
JD		 606 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
607 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
a5ebe668
JD		 608
609 &dev_attr_alarms.attr,
2ec342e6 610 &dev_attr_name.attr,
a5ebe668
JD		 611 NULL
612};
613
614static const struct attribute_group via686a_group = {
615 .attrs = via686a_attributes,
616};
617
2ec342e6 618static struct platform_driver via686a_driver = {
cdaf7934 619 .driver = {
87218842 620 .owner = THIS_MODULE,
cdaf7934
LR		 621 .name = "via686a",
622 },
2ec342e6
JD		 623 .probe = via686a_probe,
624 .remove = __devexit_p(via686a_remove),
1da177e4
LT		 625};
626
627
628/* This is called when the module is loaded */
2ec342e6 629static int __devinit via686a_probe(struct platform_device *pdev)
1da177e4 630{
1da177e4 631 struct via686a_data *data;
2ec342e6
JD		 632 struct resource *res;
633 int err;
1da177e4
LT		 634
635 /* Reserve the ISA region */
2ec342e6
JD		 636 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
637 if (!request_region(res->start, VIA686A_EXTENT,
cdaf7934 638 via686a_driver.driver.name)) {
2ec342e6
JD		 639 dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n",
640 (unsigned long)res->start, (unsigned long)res->end);
1da177e4
LT		 641 return -ENODEV;
642 }
643
ba9c2e8d 644 if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
1da177e4 645 err = -ENOMEM;
943b0830 646 goto exit_release;
1da177e4 647 }
1da177e4 648
2ec342e6
JD		 649 platform_set_drvdata(pdev, data);
650 data->addr = res->start;
651 data->name = "via686a";
9a61bf63 652 mutex_init(&data->update_lock);
be8992c2 653
1da177e4 654 /* Initialize the VIA686A chip */
2ec342e6 655 via686a_init_device(data);
1da177e4
LT		 656
657 /* Register sysfs hooks */
2ec342e6
JD		 658 if ((err = sysfs_create_group(&pdev->dev.kobj, &via686a_group)))
659 goto exit_free;
a5ebe668 660
1beeffe4
TJ		 661 data->hwmon_dev = hwmon_device_register(&pdev->dev);
662 if (IS_ERR(data->hwmon_dev)) {
663 err = PTR_ERR(data->hwmon_dev);
a5ebe668 664 goto exit_remove_files;
943b0830
MH		 665 }
666
1da177e4
LT		 667 return 0;
668
a5ebe668 669exit_remove_files:
2ec342e6 670 sysfs_remove_group(&pdev->dev.kobj, &via686a_group);
943b0830 671exit_free:
1da177e4 672 kfree(data);
943b0830 673exit_release:
2ec342e6 674 release_region(res->start, VIA686A_EXTENT);
1da177e4
LT		 675 return err;
676}
677
2ec342e6 678static int __devexit via686a_remove(struct platform_device *pdev)
1da177e4 679{
2ec342e6 680 struct via686a_data *data = platform_get_drvdata(pdev);
1da177e4 681
1beeffe4 682 hwmon_device_unregister(data->hwmon_dev);
2ec342e6 683 sysfs_remove_group(&pdev->dev.kobj, &via686a_group);
943b0830 684
2ec342e6
JD		 685 release_region(data->addr, VIA686A_EXTENT);
686 platform_set_drvdata(pdev, NULL);
943b0830 687 kfree(data);
1da177e4
LT		 688
689 return 0;
690}
691
f790674d
JD		 692static void via686a_update_fan_div(struct via686a_data *data)
693{
694 int reg = via686a_read_value(data, VIA686A_REG_FANDIV);
695 data->fan_div[0] = (reg >> 4) & 0x03;
696 data->fan_div[1] = reg >> 6;
697}
698
2ec342e6 699static void __devinit via686a_init_device(struct via686a_data *data)
1da177e4
LT		 700{
701 u8 reg;
702
703 /* Start monitoring */
2ec342e6
JD		 704 reg = via686a_read_value(data, VIA686A_REG_CONFIG);
705 via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F);
1da177e4
LT		 706
707 /* Configure temp interrupt mode for continuous-interrupt operation */
2ec342e6
JD		 708 reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE);
709 via686a_write_value(data, VIA686A_REG_TEMP_MODE,
58fe0809
JD		 710 (reg & ~VIA686A_TEMP_MODE_MASK)
711 | VIA686A_TEMP_MODE_CONTINUOUS);
f790674d
JD		 712
713 /* Pre-read fan clock divisor values */
714 via686a_update_fan_div(data);
1da177e4
LT		 715}
716
717static struct via686a_data *via686a_update_device(struct device *dev)
718{
2ec342e6 719 struct via686a_data *data = dev_get_drvdata(dev);
1da177e4
LT		 720 int i;
721
9a61bf63 722 mutex_lock(&data->update_lock);
1da177e4
LT		 723
724 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
725 || !data->valid) {
726 for (i = 0; i <= 4; i++) {
727 data->in[i] =
2ec342e6
JD		 728 via686a_read_value(data, VIA686A_REG_IN(i));
729 data->in_min[i] = via686a_read_value(data,
1da177e4
LT		 730 VIA686A_REG_IN_MIN
731 (i));
732 data->in_max[i] =
2ec342e6 733 via686a_read_value(data, VIA686A_REG_IN_MAX(i));
1da177e4
LT		 734 }
735 for (i = 1; i <= 2; i++) {
736 data->fan[i - 1] =
2ec342e6
JD		 737 via686a_read_value(data, VIA686A_REG_FAN(i));
738 data->fan_min[i - 1] = via686a_read_value(data,
1da177e4
LT		 739 VIA686A_REG_FAN_MIN(i));
740 }
741 for (i = 0; i <= 2; i++) {
2ec342e6 742 data->temp[i] = via686a_read_value(data,
563db2fe 743 VIA686A_REG_TEMP[i]) << 2;
1da177e4 744 data->temp_over[i] =
2ec342e6 745 via686a_read_value(data,
563db2fe 746 VIA686A_REG_TEMP_OVER[i]);
1da177e4 747 data->temp_hyst[i] =
2ec342e6 748 via686a_read_value(data,
563db2fe 749 VIA686A_REG_TEMP_HYST[i]);
1da177e4 750 }
be8992c2 751 /* add in lower 2 bits
1da177e4
LT		 752 temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1
753 temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23
754 temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23
755 */
2ec342e6 756 data->temp[0] |= (via686a_read_value(data,
1da177e4
LT		 757 VIA686A_REG_TEMP_LOW1)
758 & 0xc0) >> 6;
759 data->temp[1] |=
2ec342e6 760 (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) &
1da177e4
LT		 761 0x30) >> 4;
762 data->temp[2] |=
2ec342e6 763 (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) &
1da177e4
LT		 764 0xc0) >> 6;
765
f790674d 766 via686a_update_fan_div(data);
1da177e4 767 data->alarms =
2ec342e6 768 via686a_read_value(data,
1da177e4 769 VIA686A_REG_ALARM1) |
2ec342e6 770 (via686a_read_value(data, VIA686A_REG_ALARM2) << 8);
1da177e4
LT		 771 data->last_updated = jiffies;
772 data->valid = 1;
773 }
774
9a61bf63 775 mutex_unlock(&data->update_lock);
1da177e4
LT		 776
777 return data;
778}
779
600151b9 780static DEFINE_PCI_DEVICE_TABLE(via686a_pci_ids) = {
be8992c2
JD		 781 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) },
782 { 0, }
1da177e4
LT		 783};
784
785MODULE_DEVICE_TABLE(pci, via686a_pci_ids);
786
2ec342e6
JD		 787static int __devinit via686a_device_add(unsigned short address)
788{
789 struct resource res = {
790 .start = address,
791 .end = address + VIA686A_EXTENT - 1,
792 .name = "via686a",
793 .flags = IORESOURCE_IO,
794 };
795 int err;
796
b9acb64a
JD		 797 err = acpi_check_resource_conflict(&res);
798 if (err)
799 goto exit;
800
2ec342e6
JD		 801 pdev = platform_device_alloc("via686a", address);
802 if (!pdev) {
803 err = -ENOMEM;
774f7827 804 pr_err("Device allocation failed\n");
2ec342e6
JD		 805 goto exit;
806 }
807
808 err = platform_device_add_resources(pdev, &res, 1);
809 if (err) {
774f7827 810 pr_err("Device resource addition failed (%d)\n", err);
2ec342e6
JD		 811 goto exit_device_put;
812 }
813
814 err = platform_device_add(pdev);
815 if (err) {
774f7827 816 pr_err("Device addition failed (%d)\n", err);
2ec342e6
JD		 817 goto exit_device_put;
818 }
819
820 return 0;
821
822exit_device_put:
823 platform_device_put(pdev);
824exit:
825 return err;
826}
827
1da177e4 828static int __devinit via686a_pci_probe(struct pci_dev *dev,
be8992c2 829 const struct pci_device_id *id)
1da177e4 830{
2ec342e6 831 u16 address, val;
be8992c2 832
2ec342e6
JD		 833 if (force_addr) {
834 address = force_addr & ~(VIA686A_EXTENT - 1);
835 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", address);
836 if (PCIBIOS_SUCCESSFUL !=
837 pci_write_config_word(dev, VIA686A_BASE_REG, address | 1))
838 return -ENODEV;
839 }
be8992c2
JD		 840 if (PCIBIOS_SUCCESSFUL !=
841 pci_read_config_word(dev, VIA686A_BASE_REG, &val))
842 return -ENODEV;
843
2d8672c5 844 address = val & ~(VIA686A_EXTENT - 1);
2ec342e6 845 if (address == 0) {
be8992c2
JD		 846 dev_err(&dev->dev, "base address not set - upgrade BIOS "
847 "or use force_addr=0xaddr\n");
848 return -ENODEV;
849 }
be8992c2 850
2ec342e6
JD		 851 if (PCIBIOS_SUCCESSFUL !=
852 pci_read_config_word(dev, VIA686A_ENABLE_REG, &val))
853 return -ENODEV;
854 if (!(val & 0x0001)) {
855 if (!force_addr) {
856 dev_warn(&dev->dev, "Sensors disabled, enable "
857 "with force_addr=0x%x\n", address);
858 return -ENODEV;
859 }
860
861 dev_warn(&dev->dev, "Enabling sensors\n");
862 if (PCIBIOS_SUCCESSFUL !=
863 pci_write_config_word(dev, VIA686A_ENABLE_REG,
864 val | 0x0001))
865 return -ENODEV;
1da177e4
LT		 866 }
867
2ec342e6
JD		 868 if (platform_driver_register(&via686a_driver))
869 goto exit;
870
871 /* Sets global pdev as a side effect */
872 if (via686a_device_add(address))
873 goto exit_unregister;
874
1da177e4
LT		 875 /* Always return failure here. This is to allow other drivers to bind
876 * to this pci device. We don't really want to have control over the
877 * pci device, we only wanted to read as few register values from it.
878 */
2ec342e6
JD		 879 s_bridge = pci_dev_get(dev);
880 return -ENODEV;
881
882exit_unregister:
883 platform_driver_unregister(&via686a_driver);
884exit:
1da177e4
LT		 885 return -ENODEV;
886}
887
888static struct pci_driver via686a_pci_driver = {
be8992c2
JD		 889 .name = "via686a",
890 .id_table = via686a_pci_ids,
891 .probe = via686a_pci_probe,
1da177e4
LT		 892};
893
894static int __init sm_via686a_init(void)
895{
be8992c2 896 return pci_register_driver(&via686a_pci_driver);
1da177e4
LT		 897}
898
899static void __exit sm_via686a_exit(void)
900{
901 pci_unregister_driver(&via686a_pci_driver);
902 if (s_bridge != NULL) {
2ec342e6
JD		 903 platform_device_unregister(pdev);
904 platform_driver_unregister(&via686a_driver);
1da177e4
LT		 905 pci_dev_put(s_bridge);
906 s_bridge = NULL;
907 }
908}
909
96de0e25 910MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, "
be8992c2
JD		 911 "Mark Studebaker <mdsxyz123@yahoo.com> "
912 "and Bob Dougherty <bobd@stanford.edu>");
1da177e4
LT		 913MODULE_DESCRIPTION("VIA 686A Sensor device");
914MODULE_LICENSE("GPL");
915
916module_init(sm_via686a_init);
917module_exit(sm_via686a_exit);
Linux 6.x block layer and io_uring tree(s)