aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/i2c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/chips/via686a.c276
1 files changed, 140 insertions, 136 deletions
diff --git a/drivers/i2c/chips/via686a.c b/drivers/i2c/chips/via686a.c
index 3140ae8882a9..9370aaf29c3b 100644
--- a/drivers/i2c/chips/via686a.c
+++ b/drivers/i2c/chips/via686a.c
@@ -1,12 +1,12 @@
1/* 1/*
2 via686a.c - Part of lm_sensors, Linux kernel modules 2 via686a.c - Part of lm_sensors, Linux kernel modules
3 for hardware monitoring 3 for hardware monitoring
4 4
5 Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, 5 Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
6 Kyösti Mälkki <kmalkki@cc.hut.fi>, 6 Kyösti Mälkki <kmalkki@cc.hut.fi>,
7 Mark Studebaker <mdsxyz123@yahoo.com>, 7 Mark Studebaker <mdsxyz123@yahoo.com>,
8 and Bob Dougherty <bobd@stanford.edu> 8 and Bob Dougherty <bobd@stanford.edu>
9 (Some conversion-factor data were contributed by Jonathan Teh Soon Yew 9 (Some conversion-factor data were contributed by Jonathan Teh Soon Yew
10 <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.) 10 <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.)
11 11
12 This program is free software; you can redistribute it and/or modify 12 This program is free software; you can redistribute it and/or modify
@@ -64,19 +64,19 @@ SENSORS_INSMOD_1(via686a);
64/* Many VIA686A constants specified below */ 64/* Many VIA686A constants specified below */
65 65
66/* Length of ISA address segment */ 66/* Length of ISA address segment */
67#define VIA686A_EXTENT 0x80 67#define VIA686A_EXTENT 0x80
68#define VIA686A_BASE_REG 0x70 68#define VIA686A_BASE_REG 0x70
69#define VIA686A_ENABLE_REG 0x74 69#define VIA686A_ENABLE_REG 0x74
70 70
71/* The VIA686A registers */ 71/* The VIA686A registers */
72/* ins numbered 0-4 */ 72/* ins numbered 0-4 */
73#define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2)) 73#define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2))
74#define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2)) 74#define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2))
75#define VIA686A_REG_IN(nr) (0x22 + (nr)) 75#define VIA686A_REG_IN(nr) (0x22 + (nr))
76 76
77/* fans numbered 1-2 */ 77/* fans numbered 1-2 */
78#define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr)) 78#define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr))
79#define VIA686A_REG_FAN(nr) (0x28 + (nr)) 79#define VIA686A_REG_FAN(nr) (0x28 + (nr))
80 80
81/* the following values are as speced by VIA: */ 81/* the following values are as speced by VIA: */
82static const u8 regtemp[] = { 0x20, 0x21, 0x1f }; 82static const u8 regtemp[] = { 0x20, 0x21, 0x1f };
@@ -87,26 +87,28 @@ static const u8 reghyst[] = { 0x3a, 0x3e, 0x1e };
87#define VIA686A_REG_TEMP(nr) (regtemp[nr]) 87#define VIA686A_REG_TEMP(nr) (regtemp[nr])
88#define VIA686A_REG_TEMP_OVER(nr) (regover[nr]) 88#define VIA686A_REG_TEMP_OVER(nr) (regover[nr])
89#define VIA686A_REG_TEMP_HYST(nr) (reghyst[nr]) 89#define VIA686A_REG_TEMP_HYST(nr) (reghyst[nr])
90#define VIA686A_REG_TEMP_LOW1 0x4b // bits 7-6 90/* bits 7-6 */
91#define VIA686A_REG_TEMP_LOW23 0x49 // 2 = bits 5-4, 3 = bits 7-6 91#define VIA686A_REG_TEMP_LOW1 0x4b
92 92/* 2 = bits 5-4, 3 = bits 7-6 */
93#define VIA686A_REG_ALARM1 0x41 93#define VIA686A_REG_TEMP_LOW23 0x49
94#define VIA686A_REG_ALARM2 0x42 94
95#define VIA686A_REG_FANDIV 0x47 95#define VIA686A_REG_ALARM1 0x41
96#define VIA686A_REG_CONFIG 0x40 96#define VIA686A_REG_ALARM2 0x42
97/* The following register sets temp interrupt mode (bits 1-0 for temp1, 97#define VIA686A_REG_FANDIV 0x47
98#define VIA686A_REG_CONFIG 0x40
99/* The following register sets temp interrupt mode (bits 1-0 for temp1,
98 3-2 for temp2, 5-4 for temp3). Modes are: 100 3-2 for temp2, 5-4 for temp3). Modes are:
99 00 interrupt stays as long as value is out-of-range 101 00 interrupt stays as long as value is out-of-range
100 01 interrupt is cleared once register is read (default) 102 01 interrupt is cleared once register is read (default)
101 10 comparator mode- like 00, but ignores hysteresis 103 10 comparator mode- like 00, but ignores hysteresis
102 11 same as 00 */ 104 11 same as 00 */
103#define VIA686A_REG_TEMP_MODE 0x4b 105#define VIA686A_REG_TEMP_MODE 0x4b
104/* We'll just assume that you want to set all 3 simultaneously: */ 106/* We'll just assume that you want to set all 3 simultaneously: */
105#define VIA686A_TEMP_MODE_MASK 0x3F 107#define VIA686A_TEMP_MODE_MASK 0x3F
106#define VIA686A_TEMP_MODE_CONTINUOUS (0x00) 108#define VIA686A_TEMP_MODE_CONTINUOUS 0x00
107 109
108/* Conversions. Limit checking is only done on the TO_REG 110/* Conversions. Limit checking is only done on the TO_REG
109 variants. 111 variants.
110 112
111********* VOLTAGE CONVERSIONS (Bob Dougherty) ******** 113********* VOLTAGE CONVERSIONS (Bob Dougherty) ********
112 From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew): 114 From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew):
@@ -119,7 +121,7 @@ static const u8 reghyst[] = { 0x3a, 0x3e, 0x1e };
119 That is: 121 That is:
120 volts = (25*regVal+133)*factor 122 volts = (25*regVal+133)*factor
121 regVal = (volts/factor-133)/25 123 regVal = (volts/factor-133)/25
122 (These conversions were contributed by Jonathan Teh Soon Yew 124 (These conversions were contributed by Jonathan Teh Soon Yew
123 <j.teh@iname.com>) */ 125 <j.teh@iname.com>) */
124static inline u8 IN_TO_REG(long val, int inNum) 126static inline u8 IN_TO_REG(long val, int inNum)
125{ 127{
@@ -180,55 +182,55 @@ static inline u8 FAN_TO_REG(long rpm, int div)
180 else 182 else
181 return double(temp)*0.924-127.33; 183 return double(temp)*0.924-127.33;
182 184
183 A fifth-order polynomial fits the unofficial data (provided by Alex van 185 A fifth-order polynomial fits the unofficial data (provided by Alex van
184 Kaam <darkside@chello.nl>) a bit better. It also give more reasonable 186 Kaam <darkside@chello.nl>) a bit better. It also give more reasonable
185 numbers on my machine (ie. they agree with what my BIOS tells me). 187 numbers on my machine (ie. they agree with what my BIOS tells me).
186 Here's the fifth-order fit to the 8-bit data: 188 Here's the fifth-order fit to the 8-bit data:
187 temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 - 189 temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 -
188 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0. 190 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0.
189 191
190 (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for 192 (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for
191 finding my typos in this formula!) 193 finding my typos in this formula!)
192 194
193 Alas, none of the elegant function-fit solutions will work because we 195 Alas, none of the elegant function-fit solutions will work because we
194 aren't allowed to use floating point in the kernel and doing it with 196 aren't allowed to use floating point in the kernel and doing it with
195 integers doesn't rpovide enough precision. So we'll do boring old 197 integers doesn't provide enough precision. So we'll do boring old
196 look-up table stuff. The unofficial data (see below) have effectively 198 look-up table stuff. The unofficial data (see below) have effectively
197 7-bit resolution (they are rounded to the nearest degree). I'm assuming 199 7-bit resolution (they are rounded to the nearest degree). I'm assuming
198 that the transfer function of the device is monotonic and smooth, so a 200 that the transfer function of the device is monotonic and smooth, so a
199 smooth function fit to the data will allow us to get better precision. 201 smooth function fit to the data will allow us to get better precision.
200 I used the 5th-order poly fit described above and solved for 202 I used the 5th-order poly fit described above and solved for
201 VIA register values 0-255. I *10 before rounding, so we get tenth-degree 203 VIA register values 0-255. I *10 before rounding, so we get tenth-degree
202 precision. (I could have done all 1024 values for our 10-bit readings, 204 precision. (I could have done all 1024 values for our 10-bit readings,
203 but the function is very linear in the useful range (0-80 deg C), so 205 but the function is very linear in the useful range (0-80 deg C), so
204 we'll just use linear interpolation for 10-bit readings.) So, tempLUT 206 we'll just use linear interpolation for 10-bit readings.) So, tempLUT
205 is the temp at via register values 0-255: */ 207 is the temp at via register values 0-255: */
206static const long tempLUT[] = 208static const long tempLUT[] =
207 { -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519, 209{ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
208 -503, -487, -471, -456, -442, -428, -414, -400, -387, -375, 210 -503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
209 -362, -350, -339, -327, -316, -305, -295, -285, -275, -265, 211 -362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
210 -255, -246, -237, -229, -220, -212, -204, -196, -188, -180, 212 -255, -246, -237, -229, -220, -212, -204, -196, -188, -180,
211 -173, -166, -159, -152, -145, -139, -132, -126, -120, -114, 213 -173, -166, -159, -152, -145, -139, -132, -126, -120, -114,
212 -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49, 214 -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49,
213 -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16, 215 -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16,
214 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84, 216 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84,
215 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138, 217 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138,
216 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189, 218 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189,
217 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241, 219 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241,
218 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294, 220 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294,
219 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348, 221 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348,
220 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404, 222 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404,
221 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464, 223 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464,
222 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532, 224 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532,
223 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614, 225 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614,
224 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718, 226 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718,
225 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856, 227 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856,
226 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044, 228 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044,
227 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252, 229 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252,
228 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462 230 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462
229}; 231};
230 232
231/* the original LUT values from Alex van Kaam <darkside@chello.nl> 233/* the original LUT values from Alex van Kaam <darkside@chello.nl>
232 (for via register values 12-240): 234 (for via register values 12-240):
233{-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31, 235{-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31,
234-30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15, 236-30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15,
@@ -243,26 +245,26 @@ static const long tempLUT[] =
243 245
244 246
245 Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed 247 Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed
246 an extra term for a good fit to these inverse data!) and then 248 an extra term for a good fit to these inverse data!) and then
247 solving for each temp value from -50 to 110 (the useable range for 249 solving for each temp value from -50 to 110 (the useable range for
248 this chip). Here's the fit: 250 this chip). Here's the fit:
249 viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4 251 viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4
250 - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01) 252 - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01)
251 Note that n=161: */ 253 Note that n=161: */
252static const u8 viaLUT[] = 254static const u8 viaLUT[] =
253 { 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23, 255{ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23,
254 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, 256 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40,
255 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, 257 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66,
256 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100, 258 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100,
257 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129, 259 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129,
258 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156, 260 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156,
259 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 261 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180,
260 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199, 262 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199,
261 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213, 263 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213,
262 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224, 264 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224,
263 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232, 265 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232,
264 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239, 266 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239,
265 239, 240 267 239, 240
266}; 268};
267 269
268/* Converting temps to (8-bit) hyst and over registers 270/* Converting temps to (8-bit) hyst and over registers
@@ -270,7 +272,7 @@ static const u8 viaLUT[] =
270 The +50 is because the temps start at -50 */ 272 The +50 is because the temps start at -50 */
271static inline u8 TEMP_TO_REG(long val) 273static inline u8 TEMP_TO_REG(long val)
272{ 274{
273 return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 : 275 return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 :
274 (val < 0 ? val - 500 : val + 500) / 1000 + 50]; 276 (val < 0 ? val - 500 : val + 500) / 1000 + 50];
275} 277}
276 278
@@ -289,7 +291,7 @@ static inline long TEMP_FROM_REG10(u16 val)
289 291
290 /* do some linear interpolation */ 292 /* do some linear interpolation */
291 return (tempLUT[eightBits] * (4 - twoBits) + 293 return (tempLUT[eightBits] * (4 - twoBits) +
292 tempLUT[eightBits + 1] * twoBits) * 25; 294 tempLUT[eightBits + 1] * twoBits) * 25;
293} 295}
294 296
295#define DIV_FROM_REG(val) (1 << (val)) 297#define DIV_FROM_REG(val) (1 << (val))
@@ -354,28 +356,28 @@ static ssize_t show_in_max(struct device *dev, char *buf, int nr) {
354 return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr)); 356 return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr));
355} 357}
356 358
357static ssize_t set_in_min(struct device *dev, const char *buf, 359static ssize_t set_in_min(struct device *dev, const char *buf,
358 size_t count, int nr) { 360 size_t count, int nr) {
359 struct i2c_client *client = to_i2c_client(dev); 361 struct i2c_client *client = to_i2c_client(dev);
360 struct via686a_data *data = i2c_get_clientdata(client); 362 struct via686a_data *data = i2c_get_clientdata(client);
361 unsigned long val = simple_strtoul(buf, NULL, 10); 363 unsigned long val = simple_strtoul(buf, NULL, 10);
362 364
363 down(&data->update_lock); 365 down(&data->update_lock);
364 data->in_min[nr] = IN_TO_REG(val,nr); 366 data->in_min[nr] = IN_TO_REG(val, nr);
365 via686a_write_value(client, VIA686A_REG_IN_MIN(nr), 367 via686a_write_value(client, VIA686A_REG_IN_MIN(nr),
366 data->in_min[nr]); 368 data->in_min[nr]);
367 up(&data->update_lock); 369 up(&data->update_lock);
368 return count; 370 return count;
369} 371}
370static ssize_t set_in_max(struct device *dev, const char *buf, 372static ssize_t set_in_max(struct device *dev, const char *buf,
371 size_t count, int nr) { 373 size_t count, int nr) {
372 struct i2c_client *client = to_i2c_client(dev); 374 struct i2c_client *client = to_i2c_client(dev);
373 struct via686a_data *data = i2c_get_clientdata(client); 375 struct via686a_data *data = i2c_get_clientdata(client);
374 unsigned long val = simple_strtoul(buf, NULL, 10); 376 unsigned long val = simple_strtoul(buf, NULL, 10);
375 377
376 down(&data->update_lock); 378 down(&data->update_lock);
377 data->in_max[nr] = IN_TO_REG(val,nr); 379 data->in_max[nr] = IN_TO_REG(val, nr);
378 via686a_write_value(client, VIA686A_REG_IN_MAX(nr), 380 via686a_write_value(client, VIA686A_REG_IN_MAX(nr),
379 data->in_max[nr]); 381 data->in_max[nr]);
380 up(&data->update_lock); 382 up(&data->update_lock);
381 return count; 383 return count;
@@ -431,7 +433,7 @@ static ssize_t show_temp_hyst(struct device *dev, char *buf, int nr) {
431 struct via686a_data *data = via686a_update_device(dev); 433 struct via686a_data *data = via686a_update_device(dev);
432 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr])); 434 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr]));
433} 435}
434static ssize_t set_temp_over(struct device *dev, const char *buf, 436static ssize_t set_temp_over(struct device *dev, const char *buf,
435 size_t count, int nr) { 437 size_t count, int nr) {
436 struct i2c_client *client = to_i2c_client(dev); 438 struct i2c_client *client = to_i2c_client(dev);
437 struct via686a_data *data = i2c_get_clientdata(client); 439 struct via686a_data *data = i2c_get_clientdata(client);
@@ -443,7 +445,7 @@ static ssize_t set_temp_over(struct device *dev, const char *buf,
443 up(&data->update_lock); 445 up(&data->update_lock);
444 return count; 446 return count;
445} 447}
446static ssize_t set_temp_hyst(struct device *dev, const char *buf, 448static ssize_t set_temp_hyst(struct device *dev, const char *buf,
447 size_t count, int nr) { 449 size_t count, int nr) {
448 struct i2c_client *client = to_i2c_client(dev); 450 struct i2c_client *client = to_i2c_client(dev);
449 struct via686a_data *data = i2c_get_clientdata(client); 451 struct via686a_data *data = i2c_get_clientdata(client);
@@ -484,7 +486,7 @@ static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, NULL);\
484static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 486static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
485 show_temp_##offset##_over, set_temp_##offset##_over); \ 487 show_temp_##offset##_over, set_temp_##offset##_over); \
486static DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ 488static DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
487 show_temp_##offset##_hyst, set_temp_##offset##_hyst); 489 show_temp_##offset##_hyst, set_temp_##offset##_hyst);
488 490
489show_temp_offset(1); 491show_temp_offset(1);
490show_temp_offset(2); 492show_temp_offset(2);
@@ -493,19 +495,19 @@ show_temp_offset(3);
493/* 2 Fans */ 495/* 2 Fans */
494static ssize_t show_fan(struct device *dev, char *buf, int nr) { 496static ssize_t show_fan(struct device *dev, char *buf, int nr) {
495 struct via686a_data *data = via686a_update_device(dev); 497 struct via686a_data *data = via686a_update_device(dev);
496 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], 498 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
497 DIV_FROM_REG(data->fan_div[nr])) ); 499 DIV_FROM_REG(data->fan_div[nr])) );
498} 500}
499static ssize_t show_fan_min(struct device *dev, char *buf, int nr) { 501static ssize_t show_fan_min(struct device *dev, char *buf, int nr) {
500 struct via686a_data *data = via686a_update_device(dev); 502 struct via686a_data *data = via686a_update_device(dev);
501 return sprintf(buf,"%d\n", 503 return sprintf(buf, "%d\n",
502 FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) ); 504 FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) );
503} 505}
504static ssize_t show_fan_div(struct device *dev, char *buf, int nr) { 506static ssize_t show_fan_div(struct device *dev, char *buf, int nr) {
505 struct via686a_data *data = via686a_update_device(dev); 507 struct via686a_data *data = via686a_update_device(dev);
506 return sprintf(buf,"%d\n", DIV_FROM_REG(data->fan_div[nr]) ); 508 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
507} 509}
508static ssize_t set_fan_min(struct device *dev, const char *buf, 510static ssize_t set_fan_min(struct device *dev, const char *buf,
509 size_t count, int nr) { 511 size_t count, int nr) {
510 struct i2c_client *client = to_i2c_client(dev); 512 struct i2c_client *client = to_i2c_client(dev);
511 struct via686a_data *data = i2c_get_clientdata(client); 513 struct via686a_data *data = i2c_get_clientdata(client);
@@ -517,7 +519,7 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
517 up(&data->update_lock); 519 up(&data->update_lock);
518 return count; 520 return count;
519} 521}
520static ssize_t set_fan_div(struct device *dev, const char *buf, 522static ssize_t set_fan_div(struct device *dev, const char *buf,
521 size_t count, int nr) { 523 size_t count, int nr) {
522 struct i2c_client *client = to_i2c_client(dev); 524 struct i2c_client *client = to_i2c_client(dev);
523 struct via686a_data *data = i2c_get_clientdata(client); 525 struct via686a_data *data = i2c_get_clientdata(client);
@@ -608,11 +610,12 @@ static int via686a_detect(struct i2c_adapter *adapter, int address, int kind)
608 } 610 }
609 611
610 /* 8231 requires multiple of 256, we enforce that on 686 as well */ 612 /* 8231 requires multiple of 256, we enforce that on 686 as well */
611 if(force_addr) 613 if (force_addr)
612 address = force_addr & 0xFF00; 614 address = force_addr & 0xFF00;
613 615
614 if(force_addr) { 616 if (force_addr) {
615 dev_warn(&adapter->dev,"forcing ISA address 0x%04X\n", address); 617 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n",
618 address);
616 if (PCIBIOS_SUCCESSFUL != 619 if (PCIBIOS_SUCCESSFUL !=
617 pci_write_config_word(s_bridge, VIA686A_BASE_REG, address)) 620 pci_write_config_word(s_bridge, VIA686A_BASE_REG, address))
618 return -ENODEV; 621 return -ENODEV;
@@ -621,17 +624,17 @@ static int via686a_detect(struct i2c_adapter *adapter, int address, int kind)
621 pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val)) 624 pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val))
622 return -ENODEV; 625 return -ENODEV;
623 if (!(val & 0x0001)) { 626 if (!(val & 0x0001)) {
624 dev_warn(&adapter->dev,"enabling sensors\n"); 627 dev_warn(&adapter->dev, "enabling sensors\n");
625 if (PCIBIOS_SUCCESSFUL != 628 if (PCIBIOS_SUCCESSFUL !=
626 pci_write_config_word(s_bridge, VIA686A_ENABLE_REG, 629 pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
627 val | 0x0001)) 630 val | 0x0001))
628 return -ENODEV; 631 return -ENODEV;
629 } 632 }
630 633
631 /* Reserve the ISA region */ 634 /* Reserve the ISA region */
632 if (!request_region(address, VIA686A_EXTENT, via686a_driver.name)) { 635 if (!request_region(address, VIA686A_EXTENT, via686a_driver.name)) {
633 dev_err(&adapter->dev,"region 0x%x already in use!\n", 636 dev_err(&adapter->dev, "region 0x%x already in use!\n",
634 address); 637 address);
635 return -ENODEV; 638 return -ENODEV;
636 } 639 }
637 640
@@ -656,7 +659,7 @@ static int via686a_detect(struct i2c_adapter *adapter, int address, int kind)
656 /* Tell the I2C layer a new client has arrived */ 659 /* Tell the I2C layer a new client has arrived */
657 if ((err = i2c_attach_client(new_client))) 660 if ((err = i2c_attach_client(new_client)))
658 goto ERROR3; 661 goto ERROR3;
659 662
660 /* Initialize the VIA686A chip */ 663 /* Initialize the VIA686A chip */
661 via686a_init_client(new_client); 664 via686a_init_client(new_client);
662 665
@@ -695,9 +698,9 @@ static int via686a_detect(struct i2c_adapter *adapter, int address, int kind)
695 698
696 return 0; 699 return 0;
697 700
698 ERROR3: 701ERROR3:
699 kfree(data); 702 kfree(data);
700 ERROR0: 703ERROR0:
701 release_region(address, VIA686A_EXTENT); 704 release_region(address, VIA686A_EXTENT);
702 return err; 705 return err;
703} 706}
@@ -728,7 +731,7 @@ static void via686a_init_client(struct i2c_client *client)
728 via686a_write_value(client, VIA686A_REG_CONFIG, (reg|0x01)&0x7F); 731 via686a_write_value(client, VIA686A_REG_CONFIG, (reg|0x01)&0x7F);
729 732
730 /* Configure temp interrupt mode for continuous-interrupt operation */ 733 /* Configure temp interrupt mode for continuous-interrupt operation */
731 via686a_write_value(client, VIA686A_REG_TEMP_MODE, 734 via686a_write_value(client, VIA686A_REG_TEMP_MODE,
732 via686a_read_value(client, VIA686A_REG_TEMP_MODE) & 735 via686a_read_value(client, VIA686A_REG_TEMP_MODE) &
733 !(VIA686A_TEMP_MODE_MASK | VIA686A_TEMP_MODE_CONTINUOUS)); 736 !(VIA686A_TEMP_MODE_MASK | VIA686A_TEMP_MODE_CONTINUOUS));
734} 737}
@@ -768,7 +771,7 @@ static struct via686a_data *via686a_update_device(struct device *dev)
768 via686a_read_value(client, 771 via686a_read_value(client,
769 VIA686A_REG_TEMP_HYST(i)); 772 VIA686A_REG_TEMP_HYST(i));
770 } 773 }
771 /* add in lower 2 bits 774 /* add in lower 2 bits
772 temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 775 temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1
773 temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 776 temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23
774 temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 777 temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23
@@ -800,35 +803,36 @@ static struct via686a_data *via686a_update_device(struct device *dev)
800} 803}
801 804
802static struct pci_device_id via686a_pci_ids[] = { 805static struct pci_device_id via686a_pci_ids[] = {
803 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, 806 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) },
804 { 0, } 807 { 0, }
805}; 808};
806 809
807MODULE_DEVICE_TABLE(pci, via686a_pci_ids); 810MODULE_DEVICE_TABLE(pci, via686a_pci_ids);
808 811
809static int __devinit via686a_pci_probe(struct pci_dev *dev, 812static int __devinit via686a_pci_probe(struct pci_dev *dev,
810 const struct pci_device_id *id) 813 const struct pci_device_id *id)
811{ 814{
812 u16 val; 815 u16 val;
813 int addr = 0; 816 int addr = 0;
814 817
815 if (PCIBIOS_SUCCESSFUL != 818 if (PCIBIOS_SUCCESSFUL !=
816 pci_read_config_word(dev, VIA686A_BASE_REG, &val)) 819 pci_read_config_word(dev, VIA686A_BASE_REG, &val))
817 return -ENODEV; 820 return -ENODEV;
818 821
819 addr = val & ~(VIA686A_EXTENT - 1); 822 addr = val & ~(VIA686A_EXTENT - 1);
820 if (addr == 0 && force_addr == 0) { 823 if (addr == 0 && force_addr == 0) {
821 dev_err(&dev->dev,"base address not set - upgrade BIOS or use force_addr=0xaddr\n"); 824 dev_err(&dev->dev, "base address not set - upgrade BIOS "
822 return -ENODEV; 825 "or use force_addr=0xaddr\n");
823 } 826 return -ENODEV;
824 if (force_addr) 827 }
825 addr = force_addr; /* so detect will get called */ 828 if (force_addr)
826 829 addr = force_addr; /* so detect will get called */
827 if (!addr) { 830
828 dev_err(&dev->dev,"No Via 686A sensors found.\n"); 831 if (!addr) {
829 return -ENODEV; 832 dev_err(&dev->dev, "No Via 686A sensors found.\n");
830 } 833 return -ENODEV;
831 normal_isa[0] = addr; 834 }
835 normal_isa[0] = addr;
832 836
833 s_bridge = pci_dev_get(dev); 837 s_bridge = pci_dev_get(dev);
834 if (i2c_add_driver(&via686a_driver)) { 838 if (i2c_add_driver(&via686a_driver)) {
@@ -844,14 +848,14 @@ static int __devinit via686a_pci_probe(struct pci_dev *dev,
844} 848}
845 849
846static struct pci_driver via686a_pci_driver = { 850static struct pci_driver via686a_pci_driver = {
847 .name = "via686a", 851 .name = "via686a",
848 .id_table = via686a_pci_ids, 852 .id_table = via686a_pci_ids,
849 .probe = via686a_pci_probe, 853 .probe = via686a_pci_probe,
850}; 854};
851 855
852static int __init sm_via686a_init(void) 856static int __init sm_via686a_init(void)
853{ 857{
854 return pci_register_driver(&via686a_pci_driver); 858 return pci_register_driver(&via686a_pci_driver);
855} 859}
856 860
857static void __exit sm_via686a_exit(void) 861static void __exit sm_via686a_exit(void)
@@ -865,8 +869,8 @@ static void __exit sm_via686a_exit(void)
865} 869}
866 870
867MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, " 871MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, "
868 "Mark Studebaker <mdsxyz123@yahoo.com> " 872 "Mark Studebaker <mdsxyz123@yahoo.com> "
869 "and Bob Dougherty <bobd@stanford.edu>"); 873 "and Bob Dougherty <bobd@stanford.edu>");
870MODULE_DESCRIPTION("VIA 686A Sensor device"); 874MODULE_DESCRIPTION("VIA 686A Sensor device");
871MODULE_LICENSE("GPL"); 875MODULE_LICENSE("GPL");
872 876