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authormarha <marha@users.sourceforge.net>2009-09-15 15:05:16 +0000
committermarha <marha@users.sourceforge.net>2009-09-15 15:05:16 +0000
commit1915b018a54e991c9289ee0c03488294e890caea (patch)
tree0eccc8afdcbcee10f91cfe418fc8c7cdcd4b0163 /xorg-server/hw/xfree86/ddc
parent8bfa2f879ea38340a633c29120758a390b63667e (diff)
parent4db64b701ca08687df5932321d48f2ef29b99fed (diff)
downloadvcxsrv-1915b018a54e991c9289ee0c03488294e890caea.tar.gz
vcxsrv-1915b018a54e991c9289ee0c03488294e890caea.tar.bz2
vcxsrv-1915b018a54e991c9289ee0c03488294e890caea.zip
svn merge https://vcxsrv.svn.sourceforge.net/svnroot/vcxsrv/branches/released .
Diffstat (limited to 'xorg-server/hw/xfree86/ddc')
-rw-r--r--xorg-server/hw/xfree86/ddc/Makefile.in41
-rw-r--r--xorg-server/hw/xfree86/ddc/ddcPriv.h9
-rw-r--r--xorg-server/hw/xfree86/ddc/edid.c140
-rw-r--r--xorg-server/hw/xfree86/ddc/xf86DDC.c341
4 files changed, 30 insertions, 501 deletions
diff --git a/xorg-server/hw/xfree86/ddc/Makefile.in b/xorg-server/hw/xfree86/ddc/Makefile.in
index 750c9791c..8c4b56f29 100644
--- a/xorg-server/hw/xfree86/ddc/Makefile.in
+++ b/xorg-server/hw/xfree86/ddc/Makefile.in
@@ -62,16 +62,31 @@ libddc_la_LIBADD =
am_libddc_la_OBJECTS = ddc.lo interpret_edid.lo print_edid.lo \
ddcProperty.lo
libddc_la_OBJECTS = $(am_libddc_la_OBJECTS)
+AM_V_lt = $(am__v_lt_$(V))
+am__v_lt_ = $(am__v_lt_$(AM_DEFAULT_VERBOSITY))
+am__v_lt_0 = --silent
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/include
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
am__mv = mv -f
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+AM_V_CC = $(am__v_CC_$(V))
+am__v_CC_ = $(am__v_CC_$(AM_DEFAULT_VERBOSITY))
+am__v_CC_0 = @echo " CC " $@;
+AM_V_at = $(am__v_at_$(V))
+am__v_at_ = $(am__v_at_$(AM_DEFAULT_VERBOSITY))
+am__v_at_0 = @
CCLD = $(CC)
-LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
- --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
- $(LDFLAGS) -o $@
+LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+ $(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_CCLD = $(am__v_CCLD_$(V))
+am__v_CCLD_ = $(am__v_CCLD_$(AM_DEFAULT_VERBOSITY))
+am__v_CCLD_0 = @echo " CCLD " $@;
+AM_V_GEN = $(am__v_GEN_$(V))
+am__v_GEN_ = $(am__v_GEN_$(AM_DEFAULT_VERBOSITY))
+am__v_GEN_0 = @echo " GEN " $@;
SOURCES = $(libddc_la_SOURCES)
DIST_SOURCES = $(libddc_la_SOURCES)
am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
@@ -105,9 +120,9 @@ ADMIN_MAN_DIR = @ADMIN_MAN_DIR@
ADMIN_MAN_SUFFIX = @ADMIN_MAN_SUFFIX@
ALLOCA = @ALLOCA@
AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AM_MAKEFLAGS = @AM_MAKEFLAGS@
APPLE_APPLICATIONS_DIR = @APPLE_APPLICATIONS_DIR@
-APPLE_APPLICATION_ID = @APPLE_APPLICATION_ID@
APPLE_APPLICATION_NAME = @APPLE_APPLICATION_NAME@
APP_MAN_DIR = @APP_MAN_DIR@
APP_MAN_SUFFIX = @APP_MAN_SUFFIX@
@@ -196,6 +211,7 @@ KDRIVE_LIBS = @KDRIVE_LIBS@
KDRIVE_LOCAL_LIBS = @KDRIVE_LOCAL_LIBS@
KDRIVE_PURE_INCS = @KDRIVE_PURE_INCS@
KDRIVE_PURE_LIBS = @KDRIVE_PURE_LIBS@
+LAUNCHD_ID_PREFIX = @LAUNCHD_ID_PREFIX@
LD = @LD@
LDFLAGS = @LDFLAGS@
LD_EXPORT_SYMBOLS_FLAG = @LD_EXPORT_SYMBOLS_FLAG@
@@ -441,7 +457,7 @@ clean-noinstLTLIBRARIES:
rm -f "$${dir}/so_locations"; \
done
libddc.la: $(libddc_la_OBJECTS) $(libddc_la_DEPENDENCIES)
- $(LINK) $(libddc_la_OBJECTS) $(libddc_la_LIBADD) $(LIBS)
+ $(AM_V_CCLD)$(LINK) $(libddc_la_OBJECTS) $(libddc_la_LIBADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
@@ -455,22 +471,25 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/print_edid.Plo@am__quote@
.c.o:
-@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_FALSE@ $(AM_V_CC) @AM_BACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c $<
.c.obj:
-@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_FALSE@ $(AM_V_CC) @AM_BACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c `$(CYGPATH_W) '$<'`
.c.lo:
-@am__fastdepCC_TRUE@ $(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_FALSE@ $(AM_V_CC) @AM_BACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LTCOMPILE) -c -o $@ $<
diff --git a/xorg-server/hw/xfree86/ddc/ddcPriv.h b/xorg-server/hw/xfree86/ddc/ddcPriv.h
deleted file mode 100644
index b5cb9b836..000000000
--- a/xorg-server/hw/xfree86/ddc/ddcPriv.h
+++ /dev/null
@@ -1,9 +0,0 @@
-extern unsigned char *GetEDID_DDC1(
- unsigned int *
-);
-
-extern int DDC_checksum(
- unsigned char *,
- int
-);
-
diff --git a/xorg-server/hw/xfree86/ddc/edid.c b/xorg-server/hw/xfree86/ddc/edid.c
deleted file mode 100644
index 3ebafbbba..000000000
--- a/xorg-server/hw/xfree86/ddc/edid.c
+++ /dev/null
@@ -1,140 +0,0 @@
-
-/* edid.c: retrieve EDID record from raw DDC1 data stream: data
- * is contained in an array of unsigned int each unsigned int
- * contains one bit if bit is 0 unsigned int has to be zero else
- * unsigned int > 0
- *
- * Copyright 1998 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>
-
-static int find_start(unsigned int *);
-static unsigned char * find_header(unsigned char *);
-static unsigned char * resort(unsigned char *);
-
-unsigned char *
-GetEDID_DDC1(unsigned int *s_ptr)
-{
- unsigned char *d_block, *d_pos;
- unsigned int *s_pos, *s_end;
- int s_start;
- int i,j;
- s_start = find_start(s_ptr);
- if (s_start==-1) return NULL;
- s_end = s_ptr + NUM;
- s_pos = s_ptr + s_start;
- d_block=xalloc(EDID1_LEN);
- if (!d_block) return NULL;
- d_pos = d_block;
- for (i=0;i<EDID1_LEN;i++) {
- for (j=0;j<8;j++) {
- *d_pos <<= 1;
- if (*s_pos) {
- *d_pos |= 0x01;
- }
- s_pos++; if (s_pos == s_end) s_pos=s_ptr;
- };
- s_pos++; if (s_pos == s_end) s_pos=s_ptr;
- d_pos++;
- }
- xfree(s_ptr);
- if (d_block && DDC_checksum(d_block,EDID1_LEN)) return NULL;
- return (resort(d_block));
-}
-
-int
-DDC_checksum(unsigned char *block, int len)
-{
- int i, result = 0;
- int not_null = 0;
-
- for (i=0;i<len;i++) {
- not_null |= block[i];
- result += block[i];
- }
-
-#ifdef DEBUG
- if (result & 0xFF) ErrorF("DDC checksum not correct\n");
- if (!not_null) ErrorF("DDC read all Null\n");
-#endif
-
- /* catch the trivial case where all bytes are 0 */
- if (!not_null) return 1;
-
- return (result&0xFF);
-}
-
-static int
-find_start(unsigned int *ptr)
-{
- unsigned int comp[9], test[9];
- int i,j;
-
- for (i=0;i<9;i++){
- comp[i] = *(ptr++);
- test[i] = 1;
- }
- for (i=0;i<127;i++){
- for (j=0;j<9;j++){
- test[j] = test[j] & !(comp[j] ^ *(ptr++));
- }
- }
- for (i=0;i<9;i++)
- if (test[i]) return (i+1);
- return (-1);
-}
-
-static unsigned char *
-find_header(unsigned char *block)
-{
- unsigned char *ptr, *head_ptr, *end;
- unsigned char header[]={0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00};
-
- ptr = block;
- end = block + EDID1_LEN;
- while (ptr<end) {
- int i;
- head_ptr = ptr;
- for (i=0;i<8;i++){
- if (header[i] != *(head_ptr++)) break;
- if (head_ptr == end) head_ptr = block;
- }
- if (i==8) break;
- ptr++;
- }
- if (ptr == end) return (NULL);
- return (ptr);
-}
-
-static unsigned char *
-resort(unsigned char *s_block)
-{
- unsigned char *d_new, *d_ptr, *d_end, *s_ptr, *s_end;
- unsigned char tmp;
-
- s_end = s_block + EDID1_LEN;
- d_new = xalloc(EDID1_LEN);
- if (!d_new) return NULL;
- d_end = d_new + EDID1_LEN;
-
- s_ptr = find_header(s_block);
- if (!s_ptr) return NULL;
- for (d_ptr=d_new;d_ptr<d_end;d_ptr++){
- tmp = *(s_ptr++);
- *d_ptr = tmp;
- if (s_ptr == s_end) s_ptr = s_block;
- }
- xfree(s_block);
- return (d_new);
-}
-
-
diff --git a/xorg-server/hw/xfree86/ddc/xf86DDC.c b/xorg-server/hw/xfree86/ddc/xf86DDC.c
deleted file mode 100644
index 0d8677637..000000000
--- a/xorg-server/hw/xfree86/ddc/xf86DDC.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/* xf86DDC.c
- *
- * Copyright 1998,1999 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE>
- */
-
-/*
- * Note that DDC1 does not define any method for returning blocks beyond
- * the first. DDC2 does, but the original implementation would only ever
- * read the first block. If you want to read and parse all blocks, use
- * xf86DoEEDID().
- */
-
-#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)
-);
-
-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;
-}
-
-static I2CDevPtr
-DDC2MakeDevice(I2CBusPtr pBus, int address, char *name)
-{
- I2CDevPtr dev = NULL;
-
- if (!(dev = xf86I2CFindDev(pBus, address))) {
- dev = xf86CreateI2CDevRec();
- dev->DevName = name;
- dev->SlaveAddr = address;
- 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(pBus->scrnIndex, X_PROBED, "No DDC2 device\n");
- return NULL;
- }
- }
-
- return dev;
-}
-
-static I2CDevPtr
-DDC2Init(int scrnIndex, I2CBusPtr pBus)
-{
- I2CDevPtr dev = NULL;
-
- /*
- * Slow down the bus so that older monitors don't
- * miss things.
- */
- pBus->RiseFallTime = 20;
-
- DDC2MakeDevice(pBus, 0x0060, "E-EDID segment register");
- dev = DDC2MakeDevice(pBus, 0x00A0, "ddc2");
-
- return dev;
-}
-
-/* Mmmm, smell the hacks */
-static void
-EEDIDStop(I2CDevPtr d)
-{
-}
-
-/* block is the EDID block number. a segment is two blocks. */
-static Bool
-DDC2Read(I2CDevPtr dev, int block, unsigned char *R_Buffer)
-{
- unsigned char W_Buffer[1];
- int i, segment;
- I2CDevPtr seg;
- void (*stop)(I2CDevPtr);
-
- for (i = 0; i < RETRIES; i++) {
- /* Stop bits reset the segment pointer to 0, so be careful here. */
- segment = block >> 1;
- if (segment) {
- Bool b;
-
- if (!(seg = xf86I2CFindDev(dev->pI2CBus, 0x0060)))
- return FALSE;
-
- W_Buffer[0] = segment;
-
- stop = dev->pI2CBus->I2CStop;
- dev->pI2CBus->I2CStop = EEDIDStop;
-
- b = xf86I2CWriteRead(seg, W_Buffer, 1, NULL, 0);
-
- dev->pI2CBus->I2CStop = stop;
- if (!b) {
- dev->pI2CBus->I2CStop(dev);
- continue;
- }
- }
-
- W_Buffer[0] = (block & 0x01) * EDID1_LEN;
-
- if (xf86I2CWriteRead(dev, W_Buffer, 1, R_Buffer, EDID1_LEN)) {
- if (!DDC_checksum(R_Buffer, EDID1_LEN))
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-/**
- * 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. Unlike xf86DoEDID_DDC[12](), this function will return
- * the complete EDID data, including all extension blocks, if the 'complete'
- * parameter is TRUE;
- *
- * 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
-xf86DoEEDID(int scrnIndex, I2CBusPtr pBus, Bool complete)
-{
- ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
- unsigned char *EDID_block = NULL;
- xf86MonPtr tmp = NULL;
- I2CDevPtr dev = NULL;
- /* Default DDC and DDC2 to enabled. */
- Bool noddc = FALSE, noddc2 = FALSE;
- OptionInfoPtr options;
-
- options = xalloc(sizeof(DDCOptions));
- if (!options)
- return NULL;
- 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;
-
- if (!(dev = DDC2Init(scrnIndex, pBus)))
- return NULL;
-
- EDID_block = xcalloc(1, EDID1_LEN);
- if (!EDID_block)
- return NULL;
-
- if (DDC2Read(dev, 0, EDID_block)) {
- int i, n = EDID_block[0x7e];
-
- if (complete && n) {
- EDID_block = xrealloc(EDID_block, EDID1_LEN * (1+n));
-
- for (i = 0; i < n; i++)
- DDC2Read(dev, i+1, EDID_block + (EDID1_LEN * (1+i)));
- }
-
- tmp = xf86InterpretEEDID(scrnIndex, EDID_block);
- }
-
- if (tmp && complete)
- tmp->flags |= EDID_COMPLETE_RAWDATA;
-
- 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)
-{
- return xf86DoEEDID(scrnIndex, pBus, FALSE);
-}
-
-/*
- * 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);
-}