diff options
author | marha <marha@users.sourceforge.net> | 2012-03-23 10:05:55 +0100 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2012-03-23 10:05:55 +0100 |
commit | 0f834b91a4768673833ab4917e87d86c237bb1a6 (patch) | |
tree | 363489504ed4b2d360259b8de4c9e392918e5d02 /xorg-server/hw/xfree86/ddc/ddc.c | |
parent | fc72edebf875378459368c5383d9023730cbca54 (diff) | |
download | vcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.tar.gz vcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.tar.bz2 vcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.zip |
libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update
23 Mar 2012
Diffstat (limited to 'xorg-server/hw/xfree86/ddc/ddc.c')
-rw-r--r-- | xorg-server/hw/xfree86/ddc/ddc.c | 351 |
1 files changed, 189 insertions, 162 deletions
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; |