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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/xfree86/ddc/xf86DDC.c | |
download | vcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.gz vcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.bz2 vcxsrv-3562e78743202e43aec8727005182a2558117eca.zip |
Checked in the following released items:
xkeyboard-config-1.4.tar.gz
ttf-bitstream-vera-1.10.tar.gz
font-alias-1.0.1.tar.gz
font-sun-misc-1.0.0.tar.gz
font-sun-misc-1.0.0.tar.gz
font-sony-misc-1.0.0.tar.gz
font-schumacher-misc-1.0.0.tar.gz
font-mutt-misc-1.0.0.tar.gz
font-misc-misc-1.0.0.tar.gz
font-misc-meltho-1.0.0.tar.gz
font-micro-misc-1.0.0.tar.gz
font-jis-misc-1.0.0.tar.gz
font-isas-misc-1.0.0.tar.gz
font-dec-misc-1.0.0.tar.gz
font-daewoo-misc-1.0.0.tar.gz
font-cursor-misc-1.0.0.tar.gz
font-arabic-misc-1.0.0.tar.gz
font-winitzki-cyrillic-1.0.0.tar.gz
font-misc-cyrillic-1.0.0.tar.gz
font-cronyx-cyrillic-1.0.0.tar.gz
font-screen-cyrillic-1.0.1.tar.gz
font-xfree86-type1-1.0.1.tar.gz
font-adobe-utopia-type1-1.0.1.tar.gz
font-ibm-type1-1.0.0.tar.gz
font-bitstream-type1-1.0.0.tar.gz
font-bitstream-speedo-1.0.0.tar.gz
font-bh-ttf-1.0.0.tar.gz
font-bh-type1-1.0.0.tar.gz
font-bitstream-100dpi-1.0.0.tar.gz
font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz
font-bh-100dpi-1.0.0.tar.gz
font-adobe-utopia-100dpi-1.0.1.tar.gz
font-adobe-100dpi-1.0.0.tar.gz
font-util-1.0.1.tar.gz
font-bitstream-75dpi-1.0.0.tar.gz
font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz
font-adobe-utopia-75dpi-1.0.1.tar.gz
font-bh-75dpi-1.0.0.tar.gz
bdftopcf-1.0.1.tar.gz
font-adobe-75dpi-1.0.0.tar.gz
mkfontscale-1.0.6.tar.gz
openssl-0.9.8k.tar.gz
bigreqsproto-1.0.2.tar.gz
xtrans-1.2.2.tar.gz
resourceproto-1.0.2.tar.gz
inputproto-1.4.4.tar.gz
compositeproto-0.4.tar.gz
damageproto-1.1.0.tar.gz
zlib-1.2.3.tar.gz
xkbcomp-1.0.5.tar.gz
freetype-2.3.9.tar.gz
pthreads-w32-2-8-0-release.tar.gz
pixman-0.12.0.tar.gz
kbproto-1.0.3.tar.gz
evieext-1.0.2.tar.gz
fixesproto-4.0.tar.gz
recordproto-1.13.2.tar.gz
randrproto-1.2.2.tar.gz
scrnsaverproto-1.1.0.tar.gz
renderproto-0.9.3.tar.gz
xcmiscproto-1.1.2.tar.gz
fontsproto-2.0.2.tar.gz
xextproto-7.0.3.tar.gz
xproto-7.0.14.tar.gz
libXdmcp-1.0.2.tar.gz
libxkbfile-1.0.5.tar.gz
libfontenc-1.0.4.tar.gz
libXfont-1.3.4.tar.gz
libX11-1.1.5.tar.gz
libXau-1.0.4.tar.gz
libxcb-1.1.tar.gz
xorg-server-1.5.3.tar.gz
Diffstat (limited to 'xorg-server/hw/xfree86/ddc/xf86DDC.c')
-rw-r--r-- | xorg-server/hw/xfree86/ddc/xf86DDC.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/ddc/xf86DDC.c b/xorg-server/hw/xfree86/ddc/xf86DDC.c new file mode 100644 index 000000000..28e2ead28 --- /dev/null +++ b/xorg-server/hw/xfree86/ddc/xf86DDC.c @@ -0,0 +1,292 @@ +/* xf86DDC.c + * + * Copyright 1998,1999 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE> + */ +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include "misc.h" +#include "xf86.h" +#include "xf86_OSproc.h" +#include "xf86DDC.h" +#include "ddcPriv.h" +#include <string.h> + +#define RETRIES 4 + +static unsigned char *EDIDRead_DDC1( + ScrnInfoPtr pScrn, + DDC1SetSpeedProc, + unsigned int (*)(ScrnInfoPtr) +); + +static Bool TestDDC1( + ScrnInfoPtr pScrn, + unsigned int (*)(ScrnInfoPtr) +); + +static unsigned int *FetchEDID_DDC1( + ScrnInfoPtr, + register unsigned int (*)(ScrnInfoPtr) +); + +static unsigned char* EDID1Read_DDC2( + int scrnIndex, + I2CBusPtr pBus +); + +static unsigned char * DDCRead_DDC2( + int scrnIndex, + I2CBusPtr pBus, + int start, + int len +); + +typedef enum { + DDCOPT_NODDC1, + DDCOPT_NODDC2, + DDCOPT_NODDC +} DDCOpts; + +static const OptionInfoRec DDCOptions[] = { + { DDCOPT_NODDC1, "NoDDC1", OPTV_BOOLEAN, {0}, FALSE }, + { DDCOPT_NODDC2, "NoDDC2", OPTV_BOOLEAN, {0}, FALSE }, + { DDCOPT_NODDC, "NoDDC", OPTV_BOOLEAN, {0}, FALSE }, + { -1, NULL, OPTV_NONE, {0}, FALSE }, +}; + +/** + * Attempts to probe the monitor for EDID information, if NoDDC and NoDDC1 are + * unset. EDID information blocks are interpreted and the results returned in + * an xf86MonPtr. + * + * This function does not affect the list of modes used by drivers -- it is up + * to the driver to decide policy on what to do with EDID information. + * + * @return pointer to a new xf86MonPtr containing the EDID information. + * @return NULL if no monitor attached or failure to interpret the EDID. + */ +xf86MonPtr +xf86DoEDID_DDC1( + int scrnIndex, DDC1SetSpeedProc DDC1SetSpeed, + unsigned int (*DDC1Read)(ScrnInfoPtr) +) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + unsigned char *EDID_block = NULL; + xf86MonPtr tmp = NULL; + int sigio; + /* Default DDC and DDC1 to enabled. */ + Bool noddc = FALSE, noddc1 = FALSE; + OptionInfoPtr options; + + options = xnfalloc(sizeof(DDCOptions)); + (void)memcpy(options, DDCOptions, sizeof(DDCOptions)); + xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options); + + xf86GetOptValBool(options, DDCOPT_NODDC, &noddc); + xf86GetOptValBool(options, DDCOPT_NODDC1, &noddc1); + xfree(options); + + if (noddc || noddc1) + return NULL; + + sigio = xf86BlockSIGIO(); + EDID_block = EDIDRead_DDC1(pScrn,DDC1SetSpeed,DDC1Read); + xf86UnblockSIGIO(sigio); + + if (EDID_block){ + tmp = xf86InterpretEDID(scrnIndex,EDID_block); + } +#ifdef DEBUG + else ErrorF("No EDID block returned\n"); + if (!tmp) + ErrorF("Cannot interpret EDID block\n"); +#endif + return tmp; +} + +/** + * Attempts to probe the monitor for EDID information, if NoDDC and NoDDC2 are + * unset. EDID information blocks are interpreted and the results returned in + * an xf86MonPtr. + * + * This function does not affect the list of modes used by drivers -- it is up + * to the driver to decide policy on what to do with EDID information. + * + * @return pointer to a new xf86MonPtr containing the EDID information. + * @return NULL if no monitor attached or failure to interpret the EDID. + */ +xf86MonPtr +xf86DoEDID_DDC2(int scrnIndex, I2CBusPtr pBus) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + unsigned char *EDID_block = NULL; + xf86MonPtr tmp = NULL; + /* Default DDC and DDC2 to enabled. */ + Bool noddc = FALSE, noddc2 = FALSE; + OptionInfoPtr options; + + options = xnfalloc(sizeof(DDCOptions)); + (void)memcpy(options, DDCOptions, sizeof(DDCOptions)); + xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options); + + xf86GetOptValBool(options, DDCOPT_NODDC, &noddc); + xf86GetOptValBool(options, DDCOPT_NODDC2, &noddc2); + xfree(options); + + if (noddc || noddc2) + return NULL; + + EDID_block = EDID1Read_DDC2(scrnIndex,pBus); + + if (EDID_block){ + tmp = xf86InterpretEDID(scrnIndex,EDID_block); + } else { +#ifdef DEBUG + ErrorF("No EDID block returned\n"); +#endif + return NULL; + } +#ifdef DEBUG + if (!tmp) + ErrorF("Cannot interpret EDID block\n"); + else + ErrorF("Sections to follow: %i\n",tmp->no_sections); +#endif + + return tmp; +} + +/* + * read EDID record , pass it to callback function to interpret. + * callback function will store it for further use by calling + * function; it will also decide if we need to reread it + */ +static unsigned char * +EDIDRead_DDC1(ScrnInfoPtr pScrn, DDC1SetSpeedProc DDCSpeed, + unsigned int (*read_DDC)(ScrnInfoPtr)) +{ + unsigned char *EDID_block = NULL; + int count = RETRIES; + + if (!read_DDC) { + xf86DrvMsg(pScrn->scrnIndex, X_PROBED, + "chipset doesn't support DDC1\n"); + return NULL; + }; + + if (TestDDC1(pScrn,read_DDC)==-1) { + xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "No DDC signal\n"); + return NULL; + }; + + if (DDCSpeed) DDCSpeed(pScrn,DDC_FAST); + do { + EDID_block = GetEDID_DDC1(FetchEDID_DDC1(pScrn,read_DDC)); + count --; + } while (!EDID_block && count); + if (DDCSpeed) DDCSpeed(pScrn,DDC_SLOW); + + return EDID_block; +} + +/* test if DDC1 return 0 if not */ +static Bool +TestDDC1(ScrnInfoPtr pScrn, unsigned int (*read_DDC)(ScrnInfoPtr)) +{ + int old, count; + + old = read_DDC(pScrn); + count = HEADER * BITS_PER_BYTE; + do { + /* wait for next retrace */ + if (old != read_DDC(pScrn)) break; + } while(count--); + return (count); +} + +/* fetch entire EDID record; DDC bit needs to be masked */ +static unsigned int * +FetchEDID_DDC1(register ScrnInfoPtr pScrn, + register unsigned int (*read_DDC)(ScrnInfoPtr)) +{ + int count = NUM; + unsigned int *ptr, *xp; + + ptr=xp=xalloc(sizeof(int)*NUM); + + if (!ptr) return NULL; + do { + /* wait for next retrace */ + *xp = read_DDC(pScrn); + xp++; + } while(--count); + return (ptr); +} + +static unsigned char* +EDID1Read_DDC2(int scrnIndex, I2CBusPtr pBus) +{ + return DDCRead_DDC2(scrnIndex, pBus, 0, EDID1_LEN); +} + +static unsigned char * +DDCRead_DDC2(int scrnIndex, I2CBusPtr pBus, int start, int len) +{ + I2CDevPtr dev; + unsigned char W_Buffer[2]; + int w_bytes; + unsigned char *R_Buffer; + int i; + + /* + * Slow down the bus so that older monitors don't + * miss things. + */ + pBus->RiseFallTime = 20; + + if (!(dev = xf86I2CFindDev(pBus, 0x00A0))) { + dev = xf86CreateI2CDevRec(); + dev->DevName = "ddc2"; + dev->SlaveAddr = 0xA0; + dev->ByteTimeout = 2200; /* VESA DDC spec 3 p. 43 (+10 %) */ + dev->StartTimeout = 550; + dev->BitTimeout = 40; + dev->AcknTimeout = 40; + + dev->pI2CBus = pBus; + if (!xf86I2CDevInit(dev)) { + xf86DrvMsg(scrnIndex, X_PROBED, "No DDC2 device\n"); + return NULL; + } + } + if (start < 0x100) { + w_bytes = 1; + W_Buffer[0] = start; + } else { + w_bytes = 2; + W_Buffer[0] = start & 0xFF; + W_Buffer[1] = (start & 0xFF00) >> 8; + } + R_Buffer = xcalloc(1,sizeof(unsigned char) + * (len)); + for (i=0; i<RETRIES; i++) { + if (xf86I2CWriteRead(dev, W_Buffer,w_bytes, R_Buffer,len)) { + if (!DDC_checksum(R_Buffer,len)) + return R_Buffer; + +#ifdef DEBUG + else ErrorF("Checksum error in EDID block\n"); +#endif + } +#ifdef DEBUG + else ErrorF("Error reading EDID block\n"); +#endif + } + + xf86DestroyI2CDevRec(dev,TRUE); + xfree(R_Buffer); + return NULL; +} |