From 0f834b91a4768673833ab4917e87d86c237bb1a6 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Fri, 23 Mar 2012 10:05:55 +0100
Subject: libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git
 update 23 Mar 2012

---
 xorg-server/hw/xfree86/ddc/ddc.c | 351 +++++++++++++++++++++------------------
 1 file changed, 189 insertions(+), 162 deletions(-)

(limited to 'xorg-server/hw/xfree86/ddc/ddc.c')

diff --git a/xorg-server/hw/xfree86/ddc/ddc.c b/xorg-server/hw/xfree86/ddc/ddc.c
index 179f42ccd..a1281d735 100644
--- a/xorg-server/hw/xfree86/ddc/ddc.c
+++ b/xorg-server/hw/xfree86/ddc/ddc.c
@@ -29,10 +29,10 @@ typedef enum {
 } 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 },
+    {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},
 };
 
 /* DDC1 */
@@ -41,19 +41,20 @@ 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;
+    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 < 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;
+    for (i = 0; i < 9; i++)
+        if (test[i])
+            return i + 1;
     return -1;
 }
 
@@ -61,21 +62,26 @@ 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};
- 
+    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++; 
+    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;
+    if (ptr == end)
+        return NULL;
     return ptr;
 }
 
@@ -87,15 +93,18 @@ resort(unsigned char *s_block)
 
     s_end = s_block + EDID1_LEN;
     d_new = malloc(EDID1_LEN);
-    if (!d_new) return NULL;
+    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;
+    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;
     }
     free(s_block);
     return d_new;
@@ -106,21 +115,24 @@ DDC_checksum(const 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];
+
+    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");
+    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;
+    if (!not_null)
+        return 1;
 
-    return result&0xFF;
+    return result & 0xFF;
 }
 
 static unsigned char *
@@ -129,64 +141,73 @@ GetEDID_DDC1(unsigned int *s_ptr)
     unsigned char *d_block, *d_pos;
     unsigned int *s_pos, *s_end;
     int s_start;
-    int i,j;
+    int i, j;
+
     s_start = find_start(s_ptr);
-    if (s_start==-1) return NULL;
+    if (s_start == -1)
+        return NULL;
     s_end = s_ptr + NUM;
     s_pos = s_ptr + s_start;
-    d_block=malloc(EDID1_LEN);
-    if (!d_block) return NULL;
+    d_block = malloc(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++;
+    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++;
     }
     free(s_ptr);
-    if (d_block && DDC_checksum(d_block,EDID1_LEN)) {
-	free(d_block);
-	return NULL;
+    if (d_block && DDC_checksum(d_block, EDID1_LEN)) {
+        free(d_block);
+        return NULL;
     }
     return (resort(d_block));
 }
 
 /* fetch entire EDID record; DDC bit needs to be masked */
-static unsigned int * 
+static unsigned int *
 FetchEDID_DDC1(register ScrnInfoPtr pScrn,
-	       register unsigned int (*read_DDC)(ScrnInfoPtr))
+               register unsigned int (*read_DDC) (ScrnInfoPtr))
 {
     int count = NUM;
     unsigned int *ptr, *xp;
 
-    ptr=xp=malloc(sizeof(int)*NUM);
+    ptr = xp = malloc(sizeof(int) * NUM);
 
-    if (!ptr)  return NULL;
+    if (!ptr)
+        return NULL;
     do {
-	/* wait for next retrace */
-	*xp = read_DDC(pScrn);
-	xp++;
-    } while(--count);
+        /* wait for next retrace */
+        *xp = read_DDC(pScrn);
+        xp++;
+    } while (--count);
     return ptr;
 }
 
 /* test if DDC1  return 0 if not */
 static Bool
-TestDDC1(ScrnInfoPtr pScrn, unsigned int (*read_DDC)(ScrnInfoPtr))
+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--);
+        /* wait for next retrace */
+        if (old != read_DDC(pScrn))
+            break;
+    } while (count--);
     return count;
 }
 
@@ -196,29 +217,31 @@ TestDDC1(ScrnInfoPtr pScrn, unsigned int (*read_DDC)(ScrnInfoPtr))
  * 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))
+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 (!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 (TestDDC1(pScrn, read_DDC) == -1) {
+        xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "No DDC signal\n");
+        return NULL;
     };
 
-    if (DDCSpeed) DDCSpeed(pScrn,DDC_FAST);
+    if (DDCSpeed)
+        DDCSpeed(pScrn, DDC_FAST);
     do {
-	EDID_block = GetEDID_DDC1(FetchEDID_DDC1(pScrn,read_DDC)); 
-	count --;
+        EDID_block = GetEDID_DDC1(FetchEDID_DDC1(pScrn, read_DDC));
+        count--;
     } while (!EDID_block && count);
-    if (DDCSpeed) DDCSpeed(pScrn,DDC_SLOW);
+    if (DDCSpeed)
+        DDCSpeed(pScrn, DDC_SLOW);
 
     return EDID_block;
 }
@@ -235,40 +258,42 @@ EDIDRead_DDC1(ScrnInfoPtr pScrn, DDC1SetSpeedProc DDCSpeed,
  * @return NULL if no monitor attached or failure to interpret the EDID.
  */
 xf86MonPtr
-xf86DoEDID_DDC1(int scrnIndex, DDC1SetSpeedProc DDC1SetSpeed, 
-		unsigned int (*DDC1Read)(ScrnInfoPtr))
+xf86DoEDID_DDC1(int scrnIndex, DDC1SetSpeedProc DDC1SetSpeed,
+                unsigned int (*DDC1Read) (ScrnInfoPtr))
 {
     ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
     unsigned char *EDID_block = NULL;
     xf86MonPtr tmp = NULL;
+
     /* Default DDC and DDC1 to enabled. */
     Bool noddc = FALSE, noddc1 = FALSE;
     OptionInfoPtr options;
 
     options = xnfalloc(sizeof(DDCOptions));
-    (void)memcpy(options, DDCOptions, sizeof(DDCOptions));
+    (void) memcpy(options, DDCOptions, sizeof(DDCOptions));
     xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
 
     xf86GetOptValBool(options, DDCOPT_NODDC, &noddc);
     xf86GetOptValBool(options, DDCOPT_NODDC1, &noddc1);
     free(options);
-    
+
     if (noddc || noddc1)
-	return NULL;
-    
+        return NULL;
+
     OsBlockSignals();
-    EDID_block = EDIDRead_DDC1(pScrn,DDC1SetSpeed,DDC1Read);
+    EDID_block = EDIDRead_DDC1(pScrn, DDC1SetSpeed, DDC1Read);
     OsReleaseSignals();
 
-    if (EDID_block){
-	tmp = xf86InterpretEDID(scrnIndex,EDID_block);
+    if (EDID_block) {
+        tmp = xf86InterpretEDID(scrnIndex, EDID_block);
     }
 #ifdef DEBUG
-	else ErrorF("No EDID block returned\n");
+    else
+        ErrorF("No EDID block returned\n");
     if (!tmp)
-	ErrorF("Cannot interpret EDID block\n");
+        ErrorF("Cannot interpret EDID block\n");
 #endif
-	return tmp;
+    return tmp;
 }
 
 /* DDC2 */
@@ -279,19 +304,19 @@ 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;
-	}
+        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;
@@ -307,10 +332,10 @@ DDC2Init(int scrnIndex, I2CBusPtr pBus)
      * miss things.
      */
     pBus->RiseFallTime = 20;
- 
+
     dev = DDC2MakeDevice(pBus, 0x00A0, "ddc2");
     if (xf86I2CProbeAddress(pBus, 0x0060))
-	DDC2MakeDevice(pBus, 0x0060, "E-EDID segment register");
+        DDC2MakeDevice(pBus, 0x0060, "E-EDID segment register");
 
     return dev;
 }
@@ -328,39 +353,39 @@ DDC2Read(I2CDevPtr dev, int block, unsigned char *R_Buffer)
     unsigned char W_Buffer[1];
     int i, segment;
     I2CDevPtr seg;
-    void (*stop)(I2CDevPtr);
+    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;
-	}
+        /* 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;
 }
 
@@ -384,13 +409,14 @@ xf86DoEEDID(int scrnIndex, I2CBusPtr pBus, Bool complete)
     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 = malloc(sizeof(DDCOptions));
     if (!options)
-	return NULL;
+        return NULL;
     memcpy(options, DDCOptions, sizeof(DDCOptions));
     xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
 
@@ -399,30 +425,30 @@ xf86DoEEDID(int scrnIndex, I2CBusPtr pBus, Bool complete)
     free(options);
 
     if (noddc || noddc2)
-	return NULL;
+        return NULL;
 
     if (!(dev = DDC2Init(scrnIndex, pBus)))
-	return NULL;
+        return NULL;
 
     EDID_block = calloc(1, EDID1_LEN);
     if (!EDID_block)
-	return NULL;
+        return NULL;
 
     if (DDC2Read(dev, 0, EDID_block)) {
-	int i, n = EDID_block[0x7e];
+        int i, n = EDID_block[0x7e];
 
-	if (complete && n) {
-	    EDID_block = realloc(EDID_block, EDID1_LEN * (1+n));
+        if (complete && n) {
+            EDID_block = realloc(EDID_block, EDID1_LEN * (1 + n));
 
-	    for (i = 0; i < n; i++)
-		DDC2Read(dev, i+1, EDID_block + (EDID1_LEN * (1+i)));
-	}
+            for (i = 0; i < n; i++)
+                DDC2Read(dev, i + 1, EDID_block + (EDID1_LEN * (1 + i)));
+        }
 
-	tmp = xf86InterpretEEDID(scrnIndex, EDID_block);
+        tmp = xf86InterpretEEDID(scrnIndex, EDID_block);
     }
 
     if (tmp && complete)
-	tmp->flags |= MONITOR_EDID_COMPLETE_RAWDATA;
+        tmp->flags |= MONITOR_EDID_COMPLETE_RAWDATA;
 
     return tmp;
 }
@@ -469,13 +495,14 @@ xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus)
     unsigned char *did = NULL;
     xf86MonPtr tmp = NULL;
     I2CDevPtr dev = NULL;
+
     /* Default DDC and DDC2 to enabled. */
     Bool noddc = FALSE, noddc2 = FALSE;
     OptionInfoPtr options;
 
     options = malloc(sizeof(DDCOptions));
     if (!options)
-	return NULL;
+        return NULL;
     memcpy(options, DDCOptions, sizeof(DDCOptions));
     xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options);
 
@@ -484,19 +511,19 @@ xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus)
     free(options);
 
     if (noddc || noddc2)
-	return NULL;
+        return NULL;
 
     if (!(dev = DDC2Init(scrnIndex, pBus)))
-	return NULL;
+        return NULL;
 
     if ((did = DDC2ReadDisplayID())) {
-	tmp = calloc(1, sizeof(*tmp));
-	if (!tmp)
-	    return NULL;
+        tmp = calloc(1, sizeof(*tmp));
+        if (!tmp)
+            return NULL;
 
-	tmp->scrnIndex = scrnIndex;
-	tmp->flags |= MONITOR_DISPLAYID;
-	tmp->rawData = did;
+        tmp->scrnIndex = scrnIndex;
+        tmp->flags |= MONITOR_DISPLAYID;
+        tmp->rawData = did;
     }
 
     return tmp;
-- 
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