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Attempt to use nvclock code for reading GPU temperature, since running

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nvidia-settings couple of times for a second is highly inefficient.
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gryf
2012-05-30 11:01:21 +02:00
parent d256a01f46
commit 28d2a7fd2e
54 changed files with 9003 additions and 5 deletions
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99
nvclock/lm99.c Normal file
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/* NVClock 0.8 - Linux overclocker for NVIDIA cards
*
* site: http://nvclock.sourceforge.net
*
* Copyright(C) 2001-2005 Roderick Colenbrander
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* LM99 hardware monitoring
*/
#include <string.h>
#include "i2c.h"
#include "nvclock.h"
/* various defines for register offsets and such are needed */
#define LM99_REG_LOCAL_TEMP 0x0
#define LM99_REG_REMOTE_TEMP 0x1
#define LM99_REG_MAN_ID 0xfe
#define NATSEM_MAN_ID 0x1
#define MAXIM_MAN_ID 0x4d
#define LM99_REG_CHIP_ID 0xff
/* This function should return the chip type .. */
int lm99_detect(I2CDevPtr dev)
{
I2CByte man_id, chip_id;
xf86I2CReadByte (dev, LM99_REG_MAN_ID, &man_id);
xf86I2CReadByte (dev, LM99_REG_CHIP_ID, &chip_id);
switch(man_id)
{
/* National Semiconductor LM99; needs offset? */
case NATSEM_MAN_ID:
dev->chip_id = LM99;
dev->chip_name = (char*)strdup("National Semiconductor LM99");
break;
/* Unknown vendor; this chip was used in a FX5700Go laptop and looks similar to the MAx6659 */
case 0x47:
/* Maxim; likely a 655x model */
case MAXIM_MAN_ID:
dev->chip_id = MAX6559;
dev->chip_name = (char*)strdup("Maxim MAX6659");
break;
default:
return 0;
}
return 1;
}
int lm99_get_board_temp(I2CDevPtr dev)
{
I2CByte temp;
xf86I2CReadByte(dev, LM99_REG_LOCAL_TEMP, &temp);
return temp;
}
int lm99_get_gpu_temp(I2CDevPtr dev)
{
I2CByte temp;
xf86I2CReadByte(dev, LM99_REG_REMOTE_TEMP, &temp);
/* Cards with lm99 chips need an offset of 16C according to the datasheets.
/ Further an extra offset of 10C seems to be needed on Geforce6800 cards to match nvidia-settings.
/ Last but not least Geforce6600GT boards containing an LM99 sensor seem to need a total offset of 21C.
*/
if(dev->chip_id == LM99)
{
if(dev->arch == NV43)
temp += 21;
else if(dev->arch & NV4X)
temp += 26;
else
temp += 16;
}
/* Geforce6 boards need an extra offset of +10C on both LM99 and MAX6659 chipsets.
/ The code below is only executed for MAX6659 as we already handle the extra 10C above.
*/
else if(dev->arch & NV4X)
temp += 10;
return temp;
}