diff options
Diffstat (limited to 'hw/xfree86/ddc/ddcProperty.c')
| -rw-r--r-- | hw/xfree86/ddc/ddcProperty.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/hw/xfree86/ddc/ddcProperty.c b/hw/xfree86/ddc/ddcProperty.c new file mode 100644 index 000000000..d779834c2 --- /dev/null +++ b/hw/xfree86/ddc/ddcProperty.c @@ -0,0 +1,160 @@ +/* ddcProperty.c: Make the DDC monitor information available to clients + * as properties on the root window + * + * Copyright 1999 by Andrew C Aitchison <A.C.Aitchison@dpmms.cam.ac.uk> + */ +/* $XFree86: xc/programs/Xserver/hw/xfree86/ddc/ddcProperty.c,v 1.9 2001/10/28 03:33:21 tsi Exp $ */ + +#include "misc.h" +#include "xf86.h" +/* #include "xf86_ansic.h" */ +/* #include "xf86_OSproc.h" */ +#include "Xatom.h" +#include "property.h" +#include "propertyst.h" +#include "xf86DDC.h" + +#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA" +#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA" +#define VDIF_ATOM_NAME "XFree86_DDC_VDIF_RAWDATA" + +Bool +xf86SetDDCproperties(ScrnInfoPtr pScrnInfo, xf86MonPtr DDC) +{ + Atom EDID1Atom=-1, EDID2Atom=-1, VDIFAtom=-1; + CARD8 *EDID1rawdata = NULL; + CARD8 *EDID2rawdata = NULL; + int i, ret; + Bool makeEDID1prop = FALSE; + Bool makeEDID2prop = FALSE; + +#ifdef DEBUG + ErrorF("xf86SetDDCproperties(%p, %p)\n", pScrnInfo, DDC); +#endif + + if (pScrnInfo==NULL || pScrnInfo->monitor==NULL || DDC==NULL) { + return FALSE; + } + +#ifdef DEBUG + ErrorF("pScrnInfo->scrnIndex %d\n", pScrnInfo->scrnIndex); + + ErrorF("pScrnInfo->monitor was %p\n", pScrnInfo->monitor); +#endif + + pScrnInfo->monitor->DDC = DDC; + + if (DDC->ver.version == 1) { + makeEDID1prop = TRUE; + } else if (DDC->ver.version == 2) { + int checksum1; + int checksum2; + makeEDID2prop = TRUE; + + /* Some monitors (eg Panasonic PanaSync4) + * report version==2 because they used EDID v2 spec document, + * although they use EDID v1 data structure :-( + * + * Try using checksum to determine when we have such a monitor. + */ + checksum2 = 0; + for (i=0; i<256; i++) { checksum2 += DDC->rawData[i]; } + if ( (checksum2 % 256) != 0 ) { + xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "Monitor EDID v2 checksum failed\n"); + xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "XFree86_DDC_EDID2_RAWDATA property may be bad\n"); + checksum1 = 0; + for (i=0; i<128; i++) { checksum1 += DDC->rawData[i]; } + if ( (checksum1 % 256) == 0 ) { + xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "Monitor EDID v1 checksum passed,\n"); + xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "XFree86_DDC_EDID1_RAWDATA property created\n"); + makeEDID1prop = TRUE; + } + } + } else { + xf86DrvMsg(pScrnInfo->scrnIndex, X_PROBED, + "unexpected EDID version %d revision %d\n", + DDC->ver.version, DDC->ver.revision ); + } + + if (makeEDID1prop) { + if ( (EDID1rawdata = xalloc(128*sizeof(CARD8)))==NULL ) { + return FALSE; + } + + EDID1Atom = MakeAtom(EDID1_ATOM_NAME, sizeof(EDID1_ATOM_NAME), TRUE); + + + for (i=0; i<128; i++) { + EDID1rawdata[i] = DDC->rawData[i]; + } + +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n", + xf86RegisterRootWindowProperty, + pScrnInfo->scrnIndex, + EDID1Atom, XA_INTEGER, 8, + 128, (unsigned char *)EDID1rawdata ); +#endif + + ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex, + EDID1Atom, XA_INTEGER, 8, + 128, (unsigned char *)EDID1rawdata + ); +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret ); +#endif + + } + + if (makeEDID2prop) { + if ( (EDID2rawdata = xalloc(256*sizeof(CARD8)))==NULL ) { + return FALSE; + } + for (i=0; i<256; i++) { + EDID2rawdata[i] = DDC->rawData[i]; + } + + EDID2Atom = MakeAtom(EDID2_ATOM_NAME, sizeof(EDID2_ATOM_NAME), TRUE); + +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n", + xf86RegisterRootWindowProperty, + pScrnInfo->scrnIndex, + EDID2Atom, XA_INTEGER, 8, + 256, (unsigned char *)EDID2rawdata ); +#endif + ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex, + EDID2Atom, XA_INTEGER, 8, + 256, (unsigned char *)EDID2rawdata + ); +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret ); +#endif + } + + if (DDC->vdif) { +#define VDIF_DUMMY_STRING "setting dummy VDIF property - please insert correct values\n" +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n", + xf86RegisterRootWindowProperty, + pScrnInfo->scrnIndex, + VDIFAtom, XA_STRING, 8, + strlen(VDIF_DUMMY_STRING), VDIF_DUMMY_STRING + ); +#endif + + + VDIFAtom = MakeAtom(VDIF_ATOM_NAME, sizeof(VDIF_ATOM_NAME), TRUE); + + ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex, + VDIFAtom, XA_STRING, 8, + strlen(VDIF_DUMMY_STRING), + VDIF_DUMMY_STRING + ); +#ifdef DEBUG + ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret ); +#endif + } + + return TRUE; +} |