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added TVout DPMS function: at this time only completely disables output when non-TVout mode is selected.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14391 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen 2005-10-15 09:52:13 +00:00
parent 2e2bd87511
commit d6d450e124
1 changed files with 45 additions and 0 deletions
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45
src/add-ons/accelerants/nvidia/engine/nv_brooktreetv.c
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@ -1211,6 +1211,48 @@ static uint8 BT_read_monstat(uint8* monstat)
return stat;
}//end BT_read_monstat.
static uint8 BT_dpms(bool display)
{
uint8 stat;
uint8 buffer[3];
LOG(4,("Brooktree: setting DPMS: "));
/* reset status */
i2c_flag_error (-1);
/* shutdown all analog electronics... */
buffer[0] = si->ps.tv_encoder.adress + WR;
/* select first TV config register to write */
buffer[1] = 0xba;
if (display)
{
/* enable all DACs */
buffer[2] = 0x00;
LOG(4,("display on\n"));
}
else
{
/* shutdown all DACs */
buffer[2] = 0x10;
LOG(4,("display off\n"));
}
i2c_bstart(si->ps.tv_encoder.bus);
i2c_writebuffer(si->ps.tv_encoder.bus, buffer, 3);
i2c_bstop(si->ps.tv_encoder.bus);
/* log on errors */
stat = i2c_flag_error(0);
if (stat)
{
LOG(4,("Brooktree: I2C errors occurred while setting DPMS\n"));
return stat;
}
return stat;
}//end BT_dpms.
static uint8 BT_killclk_blackout(void)
{
uint8 stat;
@ -1291,6 +1333,9 @@ static uint8 BT_killclk_blackout(void)
return stat;
}
/* shutdown all analog electronics */
stat = BT_dpms(false);
return stat;
}//end BT_killclk_blackout.