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/*
* VIA VT82C686A/B hardware monitor chip
*
***************************************************************
* Before calling these routines, one must call method->Open() *
* After calling these routines, one must call method->Close() *
***************************************************************
*
VIA
Chip Temp Volt Fan SMBus IOport
via686a 3 5 2 yes yes
*
* by YRS
*/
#include "pci_pm.h"
#include "sensors.h"
/* external (global) data */
extern int smb_slave;
extern int pm_smb_detected;
extern LM_METHODS method_via, method_smb;
extern int numSMBSlave, canSMBSlave[128];
#define VIA_ADDR_START 0x50 /*0x50-0x5E*/
#define VIA_ADDR_END 0x5E
/* temp nr=0,1,2; volt nr=0,...4; fan nr=0,1 */
#define VIA686_TEMP(nr) (0x1F + (nr))
#define VIA686_VOLT(nr) (0x22 + (nr))
#define VIA686_FAN(nr) (0x29 + (nr))
#define VIA686_FANDIV 0x47
static int via686_probe(LM_METHODS *methods);
static float via686_temp(LM_METHODS *methods, int no);
static int via686_fanrpm(LM_METHODS *methods, int no);
static float via686_volt(LM_METHODS *methods, int no);
SENSOR via686 = {
"VIA Chip VT82C686A/B",
via686_probe,
via686_temp,
via686_volt,
via686_fanrpm
};
#define VIA_chkRegNum 5
/* Register checked for probing */
static int chkReg[] = {
0x40, 0x41, 0x42, 0x43,
0x44, 0x47, 0x49, 0x4B,
0x3F, 0x14, 0x1F, 0x20,
0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x29, 0x2B,
-1 };
/*
* return 0 if not probed
*/
static int via686_probe(LM_METHODS *method)
{
int n, save;
if (method != &method_via && method != &method_smb)
return 0;
if (pm_smb_detected != VIA686HWM && pm_smb_detected != VIA686SMB)
return 0;
save = smb_slave;
if (method == &method_smb) {
for (n = VIA_ADDR_START; n <= VIA_ADDR_END;) {
if (!(smb_slave = get_smb_slave(n, VIA_ADDR_END)))
goto ret0;
else {
if (chkReg_Probe(smb_slave, "Probing VIA686A/B chip:\n",
chkReg, method) >= VIA_chkRegNum)
goto ret1;
else
n = smb_slave + 2;
}
}
} else {
if (chkReg_Probe(0, "Probing VIA686A/B chip:\n",
chkReg, method) >= VIA_chkRegNum)
goto ret1;
}
ret0:
smb_slave = save;
return 0;
ret1:
if (method == &method_smb)
kill_smb_slave(smb_slave);
return 1;
}
static const float via686temp_tab[256] = {\
.00, .00, .00, .00, .00, .00, .00, .00,
.00, .00, .00, .00, .00, .00, .00,-50.00,
-48.00,-46.09,-44.26,-42.52,-40.86,-39.28,-37.78,-36.35,
-34.99,-33.70,-32.47,-31.31,-30.20,-29.15,-28.14,-27.18,
-26.27,-25.39,-24.55,-23.73,-22.95,-22.18,-21.44,-20.70,
-19.98,-19.27,-18.57,-17.87,-17.19,-16.51,-15.85,-15.20,
-14.56,-13.93,-13.32,-12.72,-12.14,-11.58,-11.03,-10.50,
-9.99, -9.50, -9.03, -8.57, -8.11, -7.67, -7.22, -6.77,
-6.31, -5.85, -5.37, -4.87, -4.36, -3.81, -3.24, -2.64,
-2.00, -1.33, -.65, .00, .59, 1.12, 1.60, 2.03,
2.42, 2.79, 3.12, 3.44, 3.75, 4.05, 4.35, 4.67,
4.99, 5.34, 5.71, 6.09, 6.49, 6.91, 7.34, 7.78,
8.23, 8.69, 9.15, 9.62, 10.09, 10.57, 11.04, 11.51,
11.98, 12.44, 12.90, 13.35, 13.80, 14.24, 14.68, 15.12,
15.55, 15.99, 16.42, 16.85, 17.27, 17.70, 18.13, 18.56,
18.99, 19.42, 19.85, 20.29, 20.72, 21.15, 21.59, 22.03,
22.47, 22.90, 23.34, 23.78, 24.22, 24.66, 25.10, 25.54,
25.99, 26.43, 26.87, 27.31, 27.75, 28.19, 28.63, 29.07,
29.51, 29.95, 30.38, 30.82, 31.25, 31.68, 32.11, 32.53,
32.96, 33.38, 33.80, 34.22, 34.63, 35.05, 35.48, 35.90,
36.33, 36.76, 37.20, 37.64, 38.09, 38.55, 39.02, 39.50,
39.99, 40.49, 41.00, 41.52, 42.06, 42.60, 43.15, 43.70,
44.27, 44.84, 45.41, 45.99, 46.57, 47.16, 47.75, 48.35,
48.94, 49.54, 50.13, 50.73, 51.33, 51.94, 52.55, 53.16,
53.78, 54.41, 55.04, 55.68, 56.32, 56.98, 57.64, 58.32,
59.00, 59.69, 60.40, 61.12, 61.85, 62.60, 63.36, 64.13,
64.93, 65.73, 66.56, 67.40, 68.26, 69.14, 70.05, 70.97,
71.91, 72.88, 73.86, 74.88, 75.92, 76.98, 78.08, 79.21,
80.36, 81.55, 82.78, 84.03, 85.33, 86.66, 88.04, 89.45,
90.90, 92.40, 93.94, 95.53, 97.16, 98.85,100.58,102.36,
104.19,106.07,108.01,110.00, .00, .00, .00, .00,
.00, .00, .00, .00, .00, .00, .00, .00
};
/*
* \retval 0xFFFF no sensor
* \retval other temperature
* no = 0,1,2,...
*/
static float via686_temp(LM_METHODS *method, int no)
{
if (no < 0 || 2 < no)
return 0xFFFF;
return via686temp_tab[method->Read(VIA686_TEMP(no))];
}
/*
* \retval 0x0000FFFF no sensor
* no = 0,1,2,...
*/
static float via686_volt(LM_METHODS *method, int no)
{
int n;
float fac;
if ( no < 0 || 4 < no )
return 0xFFFF;
switch (no) {
case 0:
case 1:
fac = 5. / 10512.;
break;
case 2:
fac = 5. / 7884.;
break;
case 3:
fac = 26. / 26280.;
break;
case 4:
fac = 63. / 26280.;
}
if ((n = method->Read(VIA686_VOLT(no))) <= 0x40)
n |= 0x100;
return (float) (n * 25 + 133) * fac;
}
/*
Controlling Fan Divisor: CR = 0x47.
highest two bits for fan2, next two bits for fan1
7 3 0
+-+-+-+-+-+-+-+-+ xx = 00,01,10,11 div1fac = 1,2,4,8
|y y|x x| VolID | yy = 00,01,10,11 div2fac = 1,2,4,8
+-+-+-+-+-+-+-+-+ initial values: xx=01, yy=01
*/
/*
* \retval 0x0000FFFF no sensor
* no = 0,1,2,...
*
* Clock is 22.5kHz (22,500 x 60 = 1350000 counts/minute)
*/
static int via686_fanrpm(LM_METHODS *method, int no)
{
int r, n;
static int div[2] = {1,1};
if (no < 0 || 1 < no)
return 0xFFFF;
n = method->Read(VIA686_FANDIV);
div[0] = (n >> 4) & 0x03;
div[1] = n >> 6;
r = method->Read(VIA686_FAN(no));
if (r == 0xFF) {
/* change divisor for the sake of next call ! */
if (div[no] < 3)
++(div[no]);
else
div[no] = 0;
r = (n & 0x0F) | (div[0] << 4) | (div[1] << 6);
method->Write(VIA686_FANDIV, r);
return 0xFFFF;
} else if (r == 0) {
return 0xFFFF;
}
return 1350000 / (r * (1 << div[no]));
}
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