diff options
| -rw-r--r-- | src/radeon_display.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/radeon_display.c b/src/radeon_display.c index 60b34495..ea5e5e3e 100644 --- a/src/radeon_display.c +++ b/src/radeon_display.c @@ -290,6 +290,7 @@ RADEONCrtIsPhysicallyConnected(ScrnInfoPtr pScrn, int IsCrtDac) if(IsCrtDac) { unsigned long ulOrigVCLK_ECP_CNTL; unsigned long ulOrigDAC_CNTL; + unsigned long ulOrigDAC_MACRO_CNTL; unsigned long ulOrigDAC_EXT_CNTL; unsigned long ulOrigCRTC_EXT_CNTL; unsigned long ulData; @@ -324,6 +325,15 @@ RADEONCrtIsPhysicallyConnected(ScrnInfoPtr pScrn, int IsCrtDac) OUTREG(RADEON_DAC_EXT_CNTL, ulData); ulOrigDAC_CNTL = INREG(RADEON_DAC_CNTL); + + if (ulOrigDAC_CNTL & RADEON_DAC_PDWN) { + /* turn on power so testing can go through */ + ulOrigDAC_MACRO_CNTL = INREG(RADEON_DAC_MACRO_CNTL); + ulOrigDAC_MACRO_CNTL &= ~(RADEON_DAC_PDWN_R | RADEON_DAC_PDWN_G | + RADEON_DAC_PDWN_B); + OUTREG(RADEON_DAC_MACRO_CNTL, ulOrigDAC_MACRO_CNTL); + } + ulData = ulOrigDAC_CNTL; ulData |= RADEON_DAC_CMP_EN; ulData &= ~(RADEON_DAC_RANGE_CNTL_MASK @@ -343,6 +353,18 @@ RADEONCrtIsPhysicallyConnected(ScrnInfoPtr pScrn, int IsCrtDac) OUTREG(RADEON_DAC_CNTL, ulOrigDAC_CNTL ); OUTREG(RADEON_DAC_EXT_CNTL, ulOrigDAC_EXT_CNTL ); OUTREG(RADEON_CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL); + + if (!bConnected) { + /* Power DAC down if CRT is not connected */ + ulOrigDAC_MACRO_CNTL = INREG(RADEON_DAC_MACRO_CNTL); + ulOrigDAC_MACRO_CNTL |= (RADEON_DAC_PDWN_R | RADEON_DAC_PDWN_G | + RADEON_DAC_PDWN_B); + OUTREG(RADEON_DAC_MACRO_CNTL, ulOrigDAC_MACRO_CNTL); + + ulData = INREG(RADEON_DAC_CNTL); + ulData |= RADEON_DAC_PDWN ; + OUTREG(RADEON_DAC_CNTL, ulData); + } } else { /* TV DAC */ /* This doesn't seem to work reliably (maybe worse on some OEM cards), |