From 1c94119ae26b94a60bb2c2b33494ed43c3b8a52f Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 16 May 2010 20:50:58 +0000 Subject: svn merge -r588:HEAD ^/branches/released . --- xorg-server/hw/xfree86/ddc/ddc.c | 1014 ++++++++++---------- xorg-server/hw/xfree86/ddc/ddcProperty.c | 250 ++--- xorg-server/hw/xfree86/ddc/interpret_edid.c | 1370 +++++++++++++-------------- 3 files changed, 1317 insertions(+), 1317 deletions(-) (limited to 'xorg-server/hw/xfree86/ddc') diff --git a/xorg-server/hw/xfree86/ddc/ddc.c b/xorg-server/hw/xfree86/ddc/ddc.c index 6fad9fbbc..ec6465818 100644 --- a/xorg-server/hw/xfree86/ddc/ddc.c +++ b/xorg-server/hw/xfree86/ddc/ddc.c @@ -1,507 +1,507 @@ -/* xf86DDC.c - * - * Copyright 1998,1999 by Egbert Eich - */ - -/* - * A note on terminology. DDC1 is the original dumb serial protocol, and - * can only do up to 128 bytes of EDID. DDC2 is I2C-encapsulated and - * introduces extension blocks. EDID is the old display identification - * block, DisplayID is the new one. - */ - -#ifdef HAVE_XORG_CONFIG_H -#include -#endif - -#include "misc.h" -#include "xf86.h" -#include "xf86_OSproc.h" -#include "xf86DDC.h" -#include - -#define RETRIES 4 - -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 }, -}; - -/* DDC1 */ - -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 (ptrscrnIndex, 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; -} - -/** - * 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; -} - -/* DDC2 */ - -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; - - dev = DDC2MakeDevice(pBus, 0x00A0, "ddc2"); - if (xf86I2CProbeAddress(pBus, 0x0060)) - DDC2MakeDevice(pBus, 0x0060, "E-EDID segment register"); - if (xf86I2CProbeAddress(pBus, 0x0062)) - DDC2MakeDevice(pBus, 0x0062, "EDID EEPROM interface"); - if (xf86I2CProbeAddress(pBus, 0x006E)) - DDC2MakeDevice(pBus, 0x006E, "DDC control interface"); - - 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 |= MONITOR_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); -} - -/* XXX write me */ -static void * -DDC2ReadDisplayID(void) -{ - return FALSE; -} - -/** - * Attempts to probe the monitor for DisplayID information, if NoDDC and - * NoDDC2 are unset. DisplayID 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 DisplayID information. - * - * @return pointer to a new xf86MonPtr containing the DisplayID information. - * @return NULL if no monitor attached or failure to interpret the DisplayID. - */ -xf86MonPtr -xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus) -{ - ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; - unsigned char *did = 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; - - if ((did = DDC2ReadDisplayID())) { - tmp = xcalloc(1, sizeof(*tmp)); - if (!tmp) - return NULL; - - tmp->scrnIndex = scrnIndex; - tmp->flags |= MONITOR_DISPLAYID; - tmp->rawData = did; - } - - return tmp; -} +/* xf86DDC.c + * + * Copyright 1998,1999 by Egbert Eich + */ + +/* + * A note on terminology. DDC1 is the original dumb serial protocol, and + * can only do up to 128 bytes of EDID. DDC2 is I2C-encapsulated and + * introduces extension blocks. EDID is the old display identification + * block, DisplayID is the new one. + */ + +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include "misc.h" +#include "xf86.h" +#include "xf86_OSproc.h" +#include "xf86DDC.h" +#include + +#define RETRIES 4 + +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 }, +}; + +/* DDC1 */ + +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 (ptrscrnIndex, 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; +} + +/** + * 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); + free(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; +} + +/* DDC2 */ + +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; + + dev = DDC2MakeDevice(pBus, 0x00A0, "ddc2"); + if (xf86I2CProbeAddress(pBus, 0x0060)) + DDC2MakeDevice(pBus, 0x0060, "E-EDID segment register"); + if (xf86I2CProbeAddress(pBus, 0x0062)) + DDC2MakeDevice(pBus, 0x0062, "EDID EEPROM interface"); + if (xf86I2CProbeAddress(pBus, 0x006E)) + DDC2MakeDevice(pBus, 0x006E, "DDC control interface"); + + 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 = malloc(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); + free(options); + + if (noddc || noddc2) + return NULL; + + if (!(dev = DDC2Init(scrnIndex, pBus))) + return NULL; + + EDID_block = calloc(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 = realloc(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 |= MONITOR_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); +} + +/* XXX write me */ +static void * +DDC2ReadDisplayID(void) +{ + return FALSE; +} + +/** + * Attempts to probe the monitor for DisplayID information, if NoDDC and + * NoDDC2 are unset. DisplayID 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 DisplayID information. + * + * @return pointer to a new xf86MonPtr containing the DisplayID information. + * @return NULL if no monitor attached or failure to interpret the DisplayID. + */ +xf86MonPtr +xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus) +{ + ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; + 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; + memcpy(options, DDCOptions, sizeof(DDCOptions)); + xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options); + + xf86GetOptValBool(options, DDCOPT_NODDC, &noddc); + xf86GetOptValBool(options, DDCOPT_NODDC2, &noddc2); + free(options); + + if (noddc || noddc2) + return NULL; + + if (!(dev = DDC2Init(scrnIndex, pBus))) + return NULL; + + if ((did = DDC2ReadDisplayID())) { + tmp = calloc(1, sizeof(*tmp)); + if (!tmp) + return NULL; + + tmp->scrnIndex = scrnIndex; + tmp->flags |= MONITOR_DISPLAYID; + tmp->rawData = did; + } + + return tmp; +} diff --git a/xorg-server/hw/xfree86/ddc/ddcProperty.c b/xorg-server/hw/xfree86/ddc/ddcProperty.c index 329a63964..d4ae1006d 100644 --- a/xorg-server/hw/xfree86/ddc/ddcProperty.c +++ b/xorg-server/hw/xfree86/ddc/ddcProperty.c @@ -1,125 +1,125 @@ -/* - * Copyright 2006 Luc Verhaegen. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sub license, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifdef HAVE_XORG_CONFIG_H -#include -#endif - -#include "xf86.h" -#include "xf86DDC.h" -#include -#include "property.h" -#include "propertyst.h" -#include "xf86DDC.h" -#include - -#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA" -#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA" - -static void -edidMakeAtom(int i, const char *name, CARD8 *data, int size) -{ - Atom atom; - unsigned char *atom_data; - - if (!(atom_data = xalloc(size*sizeof(CARD8)))) - return; - - atom = MakeAtom(name, strlen(name), TRUE); - memcpy(atom_data, data, size); - xf86RegisterRootWindowProperty(i, atom, XA_INTEGER, 8, size, atom_data); -} - -static void -addRootWindowProperties(ScrnInfoPtr pScrn, xf86MonPtr DDC) -{ - int i, scrnIndex = pScrn->scrnIndex; - Bool makeEDID1prop = FALSE; - Bool makeEDID2prop = FALSE; - - if (DDC->flags & MONITOR_DISPLAYID) { - /* Don't bother, use RANDR already */ - return; - } else 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) { - xf86DrvMsg(scrnIndex, X_INFO, "Monitor EDID v2 checksum failed\n"); - xf86DrvMsg(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)) { - xf86DrvMsg(scrnIndex, X_INFO, - "Monitor EDID v1 checksum passed,\n"); - xf86DrvMsg(scrnIndex, X_INFO, - "XFree86_DDC_EDID1_RAWDATA property created\n"); - makeEDID1prop = TRUE; - } - } - } else { - xf86DrvMsg(scrnIndex, X_PROBED, "unexpected EDID version %d.%d\n", - DDC->ver.version, DDC->ver.revision); - return; - } - - if (makeEDID1prop) { - int size = 128 + - (DDC->flags & EDID_COMPLETE_RAWDATA ? DDC->no_sections * 128 : 0); - - edidMakeAtom(scrnIndex, EDID1_ATOM_NAME, DDC->rawData, size); - } - - if (makeEDID2prop) - edidMakeAtom(scrnIndex, EDID2_ATOM_NAME, DDC->rawData, 256); -} - -Bool -xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC) -{ - if (!pScrn || !pScrn->monitor || !DDC) - return FALSE; - - if (DDC->flags & MONITOR_DISPLAYID) - ; - else - xf86EdidMonitorSet(pScrn->scrnIndex, pScrn->monitor, DDC); - - addRootWindowProperties(pScrn, DDC); - - return TRUE; -} +/* + * Copyright 2006 Luc Verhaegen. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include "xf86.h" +#include "xf86DDC.h" +#include +#include "property.h" +#include "propertyst.h" +#include "xf86DDC.h" +#include + +#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA" +#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA" + +static void +edidMakeAtom(int i, const char *name, CARD8 *data, int size) +{ + Atom atom; + unsigned char *atom_data; + + if (!(atom_data = malloc(size*sizeof(CARD8)))) + return; + + atom = MakeAtom(name, strlen(name), TRUE); + memcpy(atom_data, data, size); + xf86RegisterRootWindowProperty(i, atom, XA_INTEGER, 8, size, atom_data); +} + +static void +addRootWindowProperties(ScrnInfoPtr pScrn, xf86MonPtr DDC) +{ + int i, scrnIndex = pScrn->scrnIndex; + Bool makeEDID1prop = FALSE; + Bool makeEDID2prop = FALSE; + + if (DDC->flags & MONITOR_DISPLAYID) { + /* Don't bother, use RANDR already */ + return; + } else 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) { + xf86DrvMsg(scrnIndex, X_INFO, "Monitor EDID v2 checksum failed\n"); + xf86DrvMsg(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)) { + xf86DrvMsg(scrnIndex, X_INFO, + "Monitor EDID v1 checksum passed,\n"); + xf86DrvMsg(scrnIndex, X_INFO, + "XFree86_DDC_EDID1_RAWDATA property created\n"); + makeEDID1prop = TRUE; + } + } + } else { + xf86DrvMsg(scrnIndex, X_PROBED, "unexpected EDID version %d.%d\n", + DDC->ver.version, DDC->ver.revision); + return; + } + + if (makeEDID1prop) { + int size = 128 + + (DDC->flags & EDID_COMPLETE_RAWDATA ? DDC->no_sections * 128 : 0); + + edidMakeAtom(scrnIndex, EDID1_ATOM_NAME, DDC->rawData, size); + } + + if (makeEDID2prop) + edidMakeAtom(scrnIndex, EDID2_ATOM_NAME, DDC->rawData, 256); +} + +Bool +xf86SetDDCproperties(ScrnInfoPtr pScrn, xf86MonPtr DDC) +{ + if (!pScrn || !pScrn->monitor || !DDC) + return FALSE; + + if (DDC->flags & MONITOR_DISPLAYID) + ; + else + xf86EdidMonitorSet(pScrn->scrnIndex, pScrn->monitor, DDC); + + addRootWindowProperties(pScrn, DDC); + + return TRUE; +} diff --git a/xorg-server/hw/xfree86/ddc/interpret_edid.c b/xorg-server/hw/xfree86/ddc/interpret_edid.c index f3e593aec..1a2d2f487 100644 --- a/xorg-server/hw/xfree86/ddc/interpret_edid.c +++ b/xorg-server/hw/xfree86/ddc/interpret_edid.c @@ -1,685 +1,685 @@ -/* - * Copyright 1998 by Egbert Eich - * Copyright 2007 Red Hat, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * interpret_edid.c: interpret a primary EDID block - */ - -#ifdef HAVE_XORG_CONFIG_H -#include -#endif - -#include "misc.h" -#include "xf86.h" -#include "xf86_OSproc.h" -#define _PARSE_EDID_ -#include "xf86DDC.h" -#include - -static void get_vendor_section(Uchar*, struct vendor *); -static void get_version_section(Uchar*, struct edid_version *); -static void get_display_section(Uchar*, struct disp_features *, - struct edid_version *); -static void get_established_timing_section(Uchar*, struct established_timings *); -static void get_std_timing_section(Uchar*, struct std_timings *, - struct edid_version *); -static void fetch_detailed_block(Uchar *c, struct edid_version *ver, - struct detailed_monitor_section *det_mon); -static void get_dt_md_section(Uchar *, struct edid_version *, - struct detailed_monitor_section *det_mon); -static void copy_string(Uchar *, Uchar *); -static void get_dst_timing_section(Uchar *, struct std_timings *, - struct edid_version *); -static void get_monitor_ranges(Uchar *, struct monitor_ranges *); -static void get_whitepoint_section(Uchar *, struct whitePoints *); -static void get_detailed_timing_section(Uchar*, struct detailed_timings *); -static Bool validate_version(int scrnIndex, struct edid_version *); - -static void -find_ranges_section(struct detailed_monitor_section *det, void *ranges) -{ - if (det->type == DS_RANGES && det->section.ranges.max_clock) - *(struct monitor_ranges **)ranges = &det->section.ranges; -} - -static void -find_max_detailed_clock(struct detailed_monitor_section *det, void *ret) -{ - if (det->type == DT) { - *(int *)ret = max(*((int *)ret), - det->section.d_timings.clock); - } -} - -static void -handle_edid_quirks(xf86MonPtr m) -{ - struct monitor_ranges *ranges = NULL; - - /* - * max_clock is only encoded in EDID in tens of MHz, so occasionally we - * find a monitor claiming a max of 160 with a mode requiring 162, or - * similar. Strictly we should refuse to round up too far, but let's - * see how well this works. - */ - - /* Try to find Monitor Range and max clock, then re-set range value*/ - xf86ForEachDetailedBlock(m, find_ranges_section, &ranges); - if (ranges && ranges->max_clock) { - int clock = 0; - xf86ForEachDetailedBlock(m, find_max_detailed_clock, &clock); - if (clock && (ranges->max_clock * 1e6 < clock)) { - xf86Msg(X_WARNING, "EDID timing clock %.2f exceeds claimed max " - "%dMHz, fixing\n", clock / 1.0e6, ranges->max_clock); - ranges->max_clock = (clock+999999)/1e6; - } - } -} - -struct det_hv_parameter { - int real_hsize; - int real_vsize; - float target_aspect; -}; - -static void handle_detailed_hvsize(struct detailed_monitor_section *det_mon, - void *data) -{ - struct det_hv_parameter *p = (struct det_hv_parameter *)data; - float timing_aspect; - - if (det_mon->type == DT) { - struct detailed_timings *timing; - timing = &det_mon->section.d_timings; - - if (!timing->v_size) - return; - - timing_aspect = (float)timing->h_size / timing->v_size; - if (fabs(1 - (timing_aspect / p->target_aspect)) < 0.05) { - p->real_hsize = max(p->real_hsize, timing->h_size); - p->real_vsize = max(p->real_vsize, timing->v_size); - } - } -} - -static void encode_aspect_ratio(xf86MonPtr m) -{ - /* - * some monitors encode the aspect ratio instead of the physical size. - * try to find the largest detailed timing that matches that aspect - * ratio and use that to fill in the feature section. - */ - if ((m->features.hsize == 16 && m->features.vsize == 9) || - (m->features.hsize == 16 && m->features.vsize == 10) || - (m->features.hsize == 4 && m->features.vsize == 3) || - (m->features.hsize == 5 && m->features.vsize == 4)) { - - struct det_hv_parameter p; - p.real_hsize = 0; - p.real_vsize = 0; - p.target_aspect = (float)m->features.hsize /m->features.vsize; - - xf86ForEachDetailedBlock(m, handle_detailed_hvsize, &p); - - if (!p.real_hsize || !p.real_vsize) { - m->features.hsize = m->features.vsize = 0; - } else if ((m->features.hsize * 10 == p.real_hsize) && - (m->features.vsize * 10 == p.real_vsize)) { - /* exact match is just unlikely, should do a better check though */ - m->features.hsize = m->features.vsize = 0; - } else { - /* convert mm to cm */ - m->features.hsize = (p.real_hsize + 5) / 10; - m->features.vsize = (p.real_vsize + 5) / 10; - } - - xf86Msg(X_INFO, "Quirked EDID physical size to %dx%d cm\n", - m->features.hsize, m->features.vsize); - } -} - -xf86MonPtr -xf86InterpretEDID(int scrnIndex, Uchar *block) -{ - xf86MonPtr m; - - if (!block) return NULL; - if (! (m = xnfcalloc(sizeof(xf86Monitor),1))) return NULL; - m->scrnIndex = scrnIndex; - m->rawData = block; - - get_vendor_section(SECTION(VENDOR_SECTION,block),&m->vendor); - get_version_section(SECTION(VERSION_SECTION,block),&m->ver); - if (!validate_version(scrnIndex, &m->ver)) goto error; - get_display_section(SECTION(DISPLAY_SECTION,block),&m->features, - &m->ver); - get_established_timing_section(SECTION(ESTABLISHED_TIMING_SECTION,block), - &m->timings1); - get_std_timing_section(SECTION(STD_TIMING_SECTION,block),m->timings2, - &m->ver); - get_dt_md_section(SECTION(DET_TIMING_SECTION,block),&m->ver, m->det_mon); - m->no_sections = (int)*(char *)SECTION(NO_EDID,block); - - handle_edid_quirks(m); - encode_aspect_ratio(m); - - return (m); - - error: - xfree(m); - return NULL; -} - -static int get_cea_detail_timing(Uchar *blk, xf86MonPtr mon, - struct detailed_monitor_section *det_mon) -{ - int dt_num; - int dt_offset = ((struct cea_ext_body *)blk)->dt_offset; - - dt_num = 0; - - if (dt_offset < CEA_EXT_MIN_DATA_OFFSET) - return dt_num; - - for (; dt_offset < (CEA_EXT_MAX_DATA_OFFSET - DET_TIMING_INFO_LEN) && - dt_num < CEA_EXT_DET_TIMING_NUM; - _NEXT_DT_MD_SECTION(dt_offset)) { - - fetch_detailed_block(blk + dt_offset, &mon->ver, det_mon + dt_num); - dt_num = dt_num + 1 ; - } - - return dt_num; -} - -static void handle_cea_detail_block(Uchar *ext, xf86MonPtr mon, - handle_detailed_fn fn, - void *data) -{ - int i; - struct detailed_monitor_section det_mon[CEA_EXT_DET_TIMING_NUM]; - int det_mon_num; - - det_mon_num = get_cea_detail_timing(ext, mon, det_mon); - - for (i = 0; i < det_mon_num; i++) - fn(det_mon + i, data); -} - -void xf86ForEachDetailedBlock(xf86MonPtr mon, - handle_detailed_fn fn, - void *data) -{ - int i; - Uchar *ext; - - if (mon == NULL) - return; - - for (i = 0; i < DET_TIMINGS; i++) - fn(mon->det_mon + i, data); - - for (i = 0; i < mon->no_sections; i++) { - ext = mon->rawData + EDID1_LEN * (i + 1); - switch (ext[EXT_TAG]){ - case CEA_EXT: - handle_cea_detail_block(ext, mon, fn, data); - break; - case VTB_EXT: - case DI_EXT: - case LS_EXT: - case MI_EXT: - break; - } - } -} - -static struct cea_data_block * -extract_cea_data_block(Uchar *ext, int data_type) -{ - struct cea_ext_body *cea; - struct cea_data_block *data_collection; - struct cea_data_block *data_end; - - cea = (struct cea_ext_body *)ext; - - if (cea->dt_offset <= CEA_EXT_MIN_DATA_OFFSET) - return NULL; - - data_collection = &cea->data_collection; - data_end = (struct cea_data_block *)(cea->dt_offset + ext); - - for ( ;data_collection < data_end;) { - - if (data_type == data_collection->tag) { - return data_collection; - } - data_collection = (void *)((unsigned char *)data_collection + - data_collection->len + 1); - } - - return NULL; -} - -static void handle_cea_video_block(Uchar *ext, handle_video_fn fn, void *data) -{ - struct cea_video_block *video; - struct cea_video_block *video_end; - struct cea_data_block *data_collection; - - data_collection = extract_cea_data_block(ext, CEA_VIDEO_BLK); - if (data_collection == NULL) - return; - - video = &data_collection->u.video; - video_end = (struct cea_video_block *) - ((Uchar *)video + data_collection->len); - - for (; video < video_end; video = video + 1) { - fn(video, data); - } -} - -void xf86ForEachVideoBlock(xf86MonPtr mon, - handle_video_fn fn, - void *data) -{ - int i; - Uchar *ext; - - if (mon == NULL) - return; - - for (i = 0; i < mon->no_sections; i++) { - ext = mon->rawData + EDID1_LEN * (i + 1); - switch (ext[EXT_TAG]) { - case CEA_EXT: - handle_cea_video_block(ext, fn, data); - break; - case VTB_EXT: - case DI_EXT: - case LS_EXT: - case MI_EXT: - break; - } - } -} - -xf86MonPtr -xf86InterpretEEDID(int scrnIndex, Uchar *block) -{ - xf86MonPtr m; - - m = xf86InterpretEDID(scrnIndex, block); - if (!m) - return NULL; - - /* extension parse */ - - return m; -} - -static void -get_vendor_section(Uchar *c, struct vendor *r) -{ - r->name[0] = L1; - r->name[1] = L2; - r->name[2] = L3; - r->name[3] = '\0'; - - r->prod_id = PROD_ID; - r->serial = SERIAL_NO; - r->week = WEEK; - r->year = YEAR; -} - -static void -get_version_section(Uchar *c, struct edid_version *r) -{ - r->version = VERSION; - r->revision = REVISION; -} - -static void -get_display_section(Uchar *c, struct disp_features *r, - struct edid_version *v) -{ - r->input_type = INPUT_TYPE; - if (!DIGITAL(r->input_type)) { - r->input_voltage = INPUT_VOLTAGE; - r->input_setup = SETUP; - r->input_sync = SYNC; - } else if (v->revision == 2 || v->revision == 3) { - r->input_dfp = DFP; - } else if (v->revision >= 4) { - r->input_bpc = BPC; - r->input_interface = DIGITAL_INTERFACE; - } - r->hsize = HSIZE_MAX; - r->vsize = VSIZE_MAX; - r->gamma = GAMMA; - r->dpms = DPMS; - r->display_type = DISPLAY_TYPE; - r->msc = MSC; - r->redx = REDX; - r->redy = REDY; - r->greenx = GREENX; - r->greeny = GREENY; - r->bluex = BLUEX; - r->bluey = BLUEY; - r->whitex = WHITEX; - r->whitey = WHITEY; -} - -static void -get_established_timing_section(Uchar *c, struct established_timings *r) -{ - r->t1 = T1; - r->t2 = T2; - r->t_manu = T_MANU; -} - -static void -get_cvt_timing_section(Uchar *c, struct cvt_timings *r) -{ - int i; - - for (i = 0; i < 4; i++) { - if (c[0] && c[1] && c[2]) { - r[i].height = (c[0] + ((c[1] & 0xF0) << 8) + 1) * 2; - switch (c[1] & 0xc0) { - case 0x00: r[i].width = r[i].height * 4 / 3; break; - case 0x40: r[i].width = r[i].height * 16 / 9; break; - case 0x80: r[i].width = r[i].height * 16 / 10; break; - case 0xc0: r[i].width = r[i].height * 15 / 9; break; - } - switch (c[2] & 0x60) { - case 0x00: r[i].rate = 50; break; - case 0x20: r[i].rate = 60; break; - case 0x40: r[i].rate = 75; break; - case 0x60: r[i].rate = 85; break; - } - r[i].rates = c[2] & 0x1f; - } else { - return; - } - c += 3; - } -} - -static void -get_std_timing_section(Uchar *c, struct std_timings *r, - struct edid_version *v) -{ - int i; - - for (i=0;iversion == 1 && ver->revision >= 1 && IS_MONITOR_DESC) { - switch (MONITOR_DESC_TYPE) { - case SERIAL_NUMBER: - det_mon->type = DS_SERIAL; - copy_string(c,det_mon->section.serial); - break; - case ASCII_STR: - det_mon->type = DS_ASCII_STR; - copy_string(c,det_mon->section.ascii_data); - break; - case MONITOR_RANGES: - det_mon->type = DS_RANGES; - get_monitor_ranges(c,&det_mon->section.ranges); - break; - case MONITOR_NAME: - det_mon->type = DS_NAME; - copy_string(c,det_mon->section.name); - break; - case ADD_COLOR_POINT: - det_mon->type = DS_WHITE_P; - get_whitepoint_section(c,det_mon->section.wp); - break; - case ADD_STD_TIMINGS: - det_mon->type = DS_STD_TIMINGS; - get_dst_timing_section(c,det_mon->section.std_t, ver); - break; - case COLOR_MANAGEMENT_DATA: - det_mon->type = DS_CMD; - break; - case CVT_3BYTE_DATA: - det_mon->type = DS_CVT; - get_cvt_timing_section(c, det_mon->section.cvt); - break; - case ADD_EST_TIMINGS: - det_mon->type = DS_EST_III; - memcpy(det_mon->section.est_iii, c + 6, 6); - break; - case ADD_DUMMY: - det_mon->type = DS_DUMMY; - break; - default: - det_mon->type = DS_UNKOWN; - break; - } - if (c[3] <= 0x0F && memcmp(c, empty_block, sizeof(empty_block))) { - det_mon->type = DS_VENDOR + c[3]; - } - } else { - det_mon->type = DT; - get_detailed_timing_section(c, &det_mon->section.d_timings); - } -} - -static void -get_dt_md_section(Uchar *c, struct edid_version *ver, - struct detailed_monitor_section *det_mon) -{ - int i; - - for (i=0; i < DET_TIMINGS; i++) { - fetch_detailed_block(c, ver, det_mon + i); - NEXT_DT_MD_SECTION; - } -} - -static void -copy_string(Uchar *c, Uchar *s) -{ - int i; - c = c + 5; - for (i = 0; (i < 13 && *c != 0x0A); i++) - *(s++) = *(c++); - *s = 0; - while (i-- && (*--s == 0x20)) *s = 0; -} - -static void -get_dst_timing_section(Uchar *c, struct std_timings *t, - struct edid_version *v) -{ - int j; - c = c + 5; - for (j = 0; j < 5; j++) { - t[j].hsize = HSIZE1; - VSIZE1(t[j].vsize); - t[j].refresh = REFRESH_R; - t[j].id = STD_TIMING_ID; - NEXT_STD_TIMING; - } -} - -static void -get_monitor_ranges(Uchar *c, struct monitor_ranges *r) -{ - r->min_v = MIN_V; - r->max_v = MAX_V; - r->min_h = MIN_H; - r->max_h = MAX_H; - r->max_clock = 0; - if(MAX_CLOCK != 0xff) /* is specified? */ - r->max_clock = MAX_CLOCK * 10; - if (HAVE_2ND_GTF) { - r->gtf_2nd_f = F_2ND_GTF; - r->gtf_2nd_c = C_2ND_GTF; - r->gtf_2nd_m = M_2ND_GTF; - r->gtf_2nd_k = K_2ND_GTF; - r->gtf_2nd_j = J_2ND_GTF; - } else { - r->gtf_2nd_f = 0; - } - if (HAVE_CVT) { - r->max_clock_khz = MAX_CLOCK_KHZ; - r->max_clock = r->max_clock_khz / 1000; - r->maxwidth = MAXWIDTH; - r->supported_aspect = SUPPORTED_ASPECT; - r->preferred_aspect = PREFERRED_ASPECT; - r->supported_blanking = SUPPORTED_BLANKING; - r->supported_scaling = SUPPORTED_SCALING; - r->preferred_refresh = PREFERRED_REFRESH; - } else { - r->max_clock_khz = 0; - } -} - -static void -get_whitepoint_section(Uchar *c, struct whitePoints *wp) -{ - wp[0].white_x = WHITEX1; - wp[0].white_y = WHITEY1; - wp[1].white_x = WHITEX2; - wp[1].white_y = WHITEY2; - wp[0].index = WHITE_INDEX1; - wp[1].index = WHITE_INDEX2; - wp[0].white_gamma = WHITE_GAMMA1; - wp[1].white_gamma = WHITE_GAMMA2; -} - -static void -get_detailed_timing_section(Uchar *c, struct detailed_timings *r) -{ - r->clock = PIXEL_CLOCK; - r->h_active = H_ACTIVE; - r->h_blanking = H_BLANK; - r->v_active = V_ACTIVE; - r->v_blanking = V_BLANK; - r->h_sync_off = H_SYNC_OFF; - r->h_sync_width = H_SYNC_WIDTH; - r->v_sync_off = V_SYNC_OFF; - r->v_sync_width = V_SYNC_WIDTH; - r->h_size = H_SIZE; - r->v_size = V_SIZE; - r->h_border = H_BORDER; - r->v_border = V_BORDER; - r->interlaced = INTERLACED; - r->stereo = STEREO; - r->stereo_1 = STEREO1; - r->sync = SYNC_T; - r->misc = MISC; -} - -#define MAX_EDID_MINOR 4 - -static Bool -validate_version(int scrnIndex, struct edid_version *r) -{ - if (r->version != 1) { - xf86DrvMsg(scrnIndex, X_ERROR, "Unknown EDID version %d\n", - r->version); - return FALSE; - } - - if (r->revision > MAX_EDID_MINOR) - xf86DrvMsg(scrnIndex, X_WARNING, - "Assuming version 1.%d is compatible with 1.%d\n", - r->revision, MAX_EDID_MINOR); - - return TRUE; -} - -/* - * Returns true if HDMI, false if definitely not or unknown. - */ -Bool -xf86MonitorIsHDMI(xf86MonPtr mon) -{ - int i = 0, version, offset; - char *edid = NULL; - - if (!mon) - return FALSE; - - if (!(mon->flags & EDID_COMPLETE_RAWDATA)) - return FALSE; - - if (!mon->no_sections) - return FALSE; - - edid = (char *)mon->rawData; - if (!edid) - return FALSE; - - /* find the CEA extension block */ - for (i = 1; i <= mon->no_sections; i++) - if (edid[i * 128] == 0x02) - break; - if (i == mon->no_sections + 1) - return FALSE; - edid += (i * 128); - - version = edid[1]; - offset = edid[2]; - if (version < 3 || offset < 4) - return FALSE; - - /* walk the cea data blocks */ - for (i = 4; i < offset; i += (edid[i] & 0x1f) + 1) { - char *x = edid + i; - - /* find a vendor specific block */ - if ((x[0] & 0xe0) >> 5 == 0x03) { - int oui = (x[3] << 16) + (x[2] << 8) + x[1]; - - /* find the HDMI vendor OUI */ - if (oui == 0x000c03) - return TRUE; - } - } - - /* guess it's not HDMI after all */ - return FALSE; -} +/* + * Copyright 1998 by Egbert Eich + * Copyright 2007 Red Hat, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * interpret_edid.c: interpret a primary EDID block + */ + +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include "misc.h" +#include "xf86.h" +#include "xf86_OSproc.h" +#define _PARSE_EDID_ +#include "xf86DDC.h" +#include + +static void get_vendor_section(Uchar*, struct vendor *); +static void get_version_section(Uchar*, struct edid_version *); +static void get_display_section(Uchar*, struct disp_features *, + struct edid_version *); +static void get_established_timing_section(Uchar*, struct established_timings *); +static void get_std_timing_section(Uchar*, struct std_timings *, + struct edid_version *); +static void fetch_detailed_block(Uchar *c, struct edid_version *ver, + struct detailed_monitor_section *det_mon); +static void get_dt_md_section(Uchar *, struct edid_version *, + struct detailed_monitor_section *det_mon); +static void copy_string(Uchar *, Uchar *); +static void get_dst_timing_section(Uchar *, struct std_timings *, + struct edid_version *); +static void get_monitor_ranges(Uchar *, struct monitor_ranges *); +static void get_whitepoint_section(Uchar *, struct whitePoints *); +static void get_detailed_timing_section(Uchar*, struct detailed_timings *); +static Bool validate_version(int scrnIndex, struct edid_version *); + +static void +find_ranges_section(struct detailed_monitor_section *det, void *ranges) +{ + if (det->type == DS_RANGES && det->section.ranges.max_clock) + *(struct monitor_ranges **)ranges = &det->section.ranges; +} + +static void +find_max_detailed_clock(struct detailed_monitor_section *det, void *ret) +{ + if (det->type == DT) { + *(int *)ret = max(*((int *)ret), + det->section.d_timings.clock); + } +} + +static void +handle_edid_quirks(xf86MonPtr m) +{ + struct monitor_ranges *ranges = NULL; + + /* + * max_clock is only encoded in EDID in tens of MHz, so occasionally we + * find a monitor claiming a max of 160 with a mode requiring 162, or + * similar. Strictly we should refuse to round up too far, but let's + * see how well this works. + */ + + /* Try to find Monitor Range and max clock, then re-set range value*/ + xf86ForEachDetailedBlock(m, find_ranges_section, &ranges); + if (ranges && ranges->max_clock) { + int clock = 0; + xf86ForEachDetailedBlock(m, find_max_detailed_clock, &clock); + if (clock && (ranges->max_clock * 1e6 < clock)) { + xf86Msg(X_WARNING, "EDID timing clock %.2f exceeds claimed max " + "%dMHz, fixing\n", clock / 1.0e6, ranges->max_clock); + ranges->max_clock = (clock+999999)/1e6; + } + } +} + +struct det_hv_parameter { + int real_hsize; + int real_vsize; + float target_aspect; +}; + +static void handle_detailed_hvsize(struct detailed_monitor_section *det_mon, + void *data) +{ + struct det_hv_parameter *p = (struct det_hv_parameter *)data; + float timing_aspect; + + if (det_mon->type == DT) { + struct detailed_timings *timing; + timing = &det_mon->section.d_timings; + + if (!timing->v_size) + return; + + timing_aspect = (float)timing->h_size / timing->v_size; + if (fabs(1 - (timing_aspect / p->target_aspect)) < 0.05) { + p->real_hsize = max(p->real_hsize, timing->h_size); + p->real_vsize = max(p->real_vsize, timing->v_size); + } + } +} + +static void encode_aspect_ratio(xf86MonPtr m) +{ + /* + * some monitors encode the aspect ratio instead of the physical size. + * try to find the largest detailed timing that matches that aspect + * ratio and use that to fill in the feature section. + */ + if ((m->features.hsize == 16 && m->features.vsize == 9) || + (m->features.hsize == 16 && m->features.vsize == 10) || + (m->features.hsize == 4 && m->features.vsize == 3) || + (m->features.hsize == 5 && m->features.vsize == 4)) { + + struct det_hv_parameter p; + p.real_hsize = 0; + p.real_vsize = 0; + p.target_aspect = (float)m->features.hsize /m->features.vsize; + + xf86ForEachDetailedBlock(m, handle_detailed_hvsize, &p); + + if (!p.real_hsize || !p.real_vsize) { + m->features.hsize = m->features.vsize = 0; + } else if ((m->features.hsize * 10 == p.real_hsize) && + (m->features.vsize * 10 == p.real_vsize)) { + /* exact match is just unlikely, should do a better check though */ + m->features.hsize = m->features.vsize = 0; + } else { + /* convert mm to cm */ + m->features.hsize = (p.real_hsize + 5) / 10; + m->features.vsize = (p.real_vsize + 5) / 10; + } + + xf86Msg(X_INFO, "Quirked EDID physical size to %dx%d cm\n", + m->features.hsize, m->features.vsize); + } +} + +xf86MonPtr +xf86InterpretEDID(int scrnIndex, Uchar *block) +{ + xf86MonPtr m; + + if (!block) return NULL; + if (! (m = xnfcalloc(sizeof(xf86Monitor),1))) return NULL; + m->scrnIndex = scrnIndex; + m->rawData = block; + + get_vendor_section(SECTION(VENDOR_SECTION,block),&m->vendor); + get_version_section(SECTION(VERSION_SECTION,block),&m->ver); + if (!validate_version(scrnIndex, &m->ver)) goto error; + get_display_section(SECTION(DISPLAY_SECTION,block),&m->features, + &m->ver); + get_established_timing_section(SECTION(ESTABLISHED_TIMING_SECTION,block), + &m->timings1); + get_std_timing_section(SECTION(STD_TIMING_SECTION,block),m->timings2, + &m->ver); + get_dt_md_section(SECTION(DET_TIMING_SECTION,block),&m->ver, m->det_mon); + m->no_sections = (int)*(char *)SECTION(NO_EDID,block); + + handle_edid_quirks(m); + encode_aspect_ratio(m); + + return (m); + + error: + free(m); + return NULL; +} + +static int get_cea_detail_timing(Uchar *blk, xf86MonPtr mon, + struct detailed_monitor_section *det_mon) +{ + int dt_num; + int dt_offset = ((struct cea_ext_body *)blk)->dt_offset; + + dt_num = 0; + + if (dt_offset < CEA_EXT_MIN_DATA_OFFSET) + return dt_num; + + for (; dt_offset < (CEA_EXT_MAX_DATA_OFFSET - DET_TIMING_INFO_LEN) && + dt_num < CEA_EXT_DET_TIMING_NUM; + _NEXT_DT_MD_SECTION(dt_offset)) { + + fetch_detailed_block(blk + dt_offset, &mon->ver, det_mon + dt_num); + dt_num = dt_num + 1 ; + } + + return dt_num; +} + +static void handle_cea_detail_block(Uchar *ext, xf86MonPtr mon, + handle_detailed_fn fn, + void *data) +{ + int i; + struct detailed_monitor_section det_mon[CEA_EXT_DET_TIMING_NUM]; + int det_mon_num; + + det_mon_num = get_cea_detail_timing(ext, mon, det_mon); + + for (i = 0; i < det_mon_num; i++) + fn(det_mon + i, data); +} + +void xf86ForEachDetailedBlock(xf86MonPtr mon, + handle_detailed_fn fn, + void *data) +{ + int i; + Uchar *ext; + + if (mon == NULL) + return; + + for (i = 0; i < DET_TIMINGS; i++) + fn(mon->det_mon + i, data); + + for (i = 0; i < mon->no_sections; i++) { + ext = mon->rawData + EDID1_LEN * (i + 1); + switch (ext[EXT_TAG]){ + case CEA_EXT: + handle_cea_detail_block(ext, mon, fn, data); + break; + case VTB_EXT: + case DI_EXT: + case LS_EXT: + case MI_EXT: + break; + } + } +} + +static struct cea_data_block * +extract_cea_data_block(Uchar *ext, int data_type) +{ + struct cea_ext_body *cea; + struct cea_data_block *data_collection; + struct cea_data_block *data_end; + + cea = (struct cea_ext_body *)ext; + + if (cea->dt_offset <= CEA_EXT_MIN_DATA_OFFSET) + return NULL; + + data_collection = &cea->data_collection; + data_end = (struct cea_data_block *)(cea->dt_offset + ext); + + for ( ;data_collection < data_end;) { + + if (data_type == data_collection->tag) { + return data_collection; + } + data_collection = (void *)((unsigned char *)data_collection + + data_collection->len + 1); + } + + return NULL; +} + +static void handle_cea_video_block(Uchar *ext, handle_video_fn fn, void *data) +{ + struct cea_video_block *video; + struct cea_video_block *video_end; + struct cea_data_block *data_collection; + + data_collection = extract_cea_data_block(ext, CEA_VIDEO_BLK); + if (data_collection == NULL) + return; + + video = &data_collection->u.video; + video_end = (struct cea_video_block *) + ((Uchar *)video + data_collection->len); + + for (; video < video_end; video = video + 1) { + fn(video, data); + } +} + +void xf86ForEachVideoBlock(xf86MonPtr mon, + handle_video_fn fn, + void *data) +{ + int i; + Uchar *ext; + + if (mon == NULL) + return; + + for (i = 0; i < mon->no_sections; i++) { + ext = mon->rawData + EDID1_LEN * (i + 1); + switch (ext[EXT_TAG]) { + case CEA_EXT: + handle_cea_video_block(ext, fn, data); + break; + case VTB_EXT: + case DI_EXT: + case LS_EXT: + case MI_EXT: + break; + } + } +} + +xf86MonPtr +xf86InterpretEEDID(int scrnIndex, Uchar *block) +{ + xf86MonPtr m; + + m = xf86InterpretEDID(scrnIndex, block); + if (!m) + return NULL; + + /* extension parse */ + + return m; +} + +static void +get_vendor_section(Uchar *c, struct vendor *r) +{ + r->name[0] = L1; + r->name[1] = L2; + r->name[2] = L3; + r->name[3] = '\0'; + + r->prod_id = PROD_ID; + r->serial = SERIAL_NO; + r->week = WEEK; + r->year = YEAR; +} + +static void +get_version_section(Uchar *c, struct edid_version *r) +{ + r->version = VERSION; + r->revision = REVISION; +} + +static void +get_display_section(Uchar *c, struct disp_features *r, + struct edid_version *v) +{ + r->input_type = INPUT_TYPE; + if (!DIGITAL(r->input_type)) { + r->input_voltage = INPUT_VOLTAGE; + r->input_setup = SETUP; + r->input_sync = SYNC; + } else if (v->revision == 2 || v->revision == 3) { + r->input_dfp = DFP; + } else if (v->revision >= 4) { + r->input_bpc = BPC; + r->input_interface = DIGITAL_INTERFACE; + } + r->hsize = HSIZE_MAX; + r->vsize = VSIZE_MAX; + r->gamma = GAMMA; + r->dpms = DPMS; + r->display_type = DISPLAY_TYPE; + r->msc = MSC; + r->redx = REDX; + r->redy = REDY; + r->greenx = GREENX; + r->greeny = GREENY; + r->bluex = BLUEX; + r->bluey = BLUEY; + r->whitex = WHITEX; + r->whitey = WHITEY; +} + +static void +get_established_timing_section(Uchar *c, struct established_timings *r) +{ + r->t1 = T1; + r->t2 = T2; + r->t_manu = T_MANU; +} + +static void +get_cvt_timing_section(Uchar *c, struct cvt_timings *r) +{ + int i; + + for (i = 0; i < 4; i++) { + if (c[0] && c[1] && c[2]) { + r[i].height = (c[0] + ((c[1] & 0xF0) << 8) + 1) * 2; + switch (c[1] & 0xc0) { + case 0x00: r[i].width = r[i].height * 4 / 3; break; + case 0x40: r[i].width = r[i].height * 16 / 9; break; + case 0x80: r[i].width = r[i].height * 16 / 10; break; + case 0xc0: r[i].width = r[i].height * 15 / 9; break; + } + switch (c[2] & 0x60) { + case 0x00: r[i].rate = 50; break; + case 0x20: r[i].rate = 60; break; + case 0x40: r[i].rate = 75; break; + case 0x60: r[i].rate = 85; break; + } + r[i].rates = c[2] & 0x1f; + } else { + return; + } + c += 3; + } +} + +static void +get_std_timing_section(Uchar *c, struct std_timings *r, + struct edid_version *v) +{ + int i; + + for (i=0;iversion == 1 && ver->revision >= 1 && IS_MONITOR_DESC) { + switch (MONITOR_DESC_TYPE) { + case SERIAL_NUMBER: + det_mon->type = DS_SERIAL; + copy_string(c,det_mon->section.serial); + break; + case ASCII_STR: + det_mon->type = DS_ASCII_STR; + copy_string(c,det_mon->section.ascii_data); + break; + case MONITOR_RANGES: + det_mon->type = DS_RANGES; + get_monitor_ranges(c,&det_mon->section.ranges); + break; + case MONITOR_NAME: + det_mon->type = DS_NAME; + copy_string(c,det_mon->section.name); + break; + case ADD_COLOR_POINT: + det_mon->type = DS_WHITE_P; + get_whitepoint_section(c,det_mon->section.wp); + break; + case ADD_STD_TIMINGS: + det_mon->type = DS_STD_TIMINGS; + get_dst_timing_section(c,det_mon->section.std_t, ver); + break; + case COLOR_MANAGEMENT_DATA: + det_mon->type = DS_CMD; + break; + case CVT_3BYTE_DATA: + det_mon->type = DS_CVT; + get_cvt_timing_section(c, det_mon->section.cvt); + break; + case ADD_EST_TIMINGS: + det_mon->type = DS_EST_III; + memcpy(det_mon->section.est_iii, c + 6, 6); + break; + case ADD_DUMMY: + det_mon->type = DS_DUMMY; + break; + default: + det_mon->type = DS_UNKOWN; + break; + } + if (c[3] <= 0x0F && memcmp(c, empty_block, sizeof(empty_block))) { + det_mon->type = DS_VENDOR + c[3]; + } + } else { + det_mon->type = DT; + get_detailed_timing_section(c, &det_mon->section.d_timings); + } +} + +static void +get_dt_md_section(Uchar *c, struct edid_version *ver, + struct detailed_monitor_section *det_mon) +{ + int i; + + for (i=0; i < DET_TIMINGS; i++) { + fetch_detailed_block(c, ver, det_mon + i); + NEXT_DT_MD_SECTION; + } +} + +static void +copy_string(Uchar *c, Uchar *s) +{ + int i; + c = c + 5; + for (i = 0; (i < 13 && *c != 0x0A); i++) + *(s++) = *(c++); + *s = 0; + while (i-- && (*--s == 0x20)) *s = 0; +} + +static void +get_dst_timing_section(Uchar *c, struct std_timings *t, + struct edid_version *v) +{ + int j; + c = c + 5; + for (j = 0; j < 5; j++) { + t[j].hsize = HSIZE1; + VSIZE1(t[j].vsize); + t[j].refresh = REFRESH_R; + t[j].id = STD_TIMING_ID; + NEXT_STD_TIMING; + } +} + +static void +get_monitor_ranges(Uchar *c, struct monitor_ranges *r) +{ + r->min_v = MIN_V; + r->max_v = MAX_V; + r->min_h = MIN_H; + r->max_h = MAX_H; + r->max_clock = 0; + if(MAX_CLOCK != 0xff) /* is specified? */ + r->max_clock = MAX_CLOCK * 10; + if (HAVE_2ND_GTF) { + r->gtf_2nd_f = F_2ND_GTF; + r->gtf_2nd_c = C_2ND_GTF; + r->gtf_2nd_m = M_2ND_GTF; + r->gtf_2nd_k = K_2ND_GTF; + r->gtf_2nd_j = J_2ND_GTF; + } else { + r->gtf_2nd_f = 0; + } + if (HAVE_CVT) { + r->max_clock_khz = MAX_CLOCK_KHZ; + r->max_clock = r->max_clock_khz / 1000; + r->maxwidth = MAXWIDTH; + r->supported_aspect = SUPPORTED_ASPECT; + r->preferred_aspect = PREFERRED_ASPECT; + r->supported_blanking = SUPPORTED_BLANKING; + r->supported_scaling = SUPPORTED_SCALING; + r->preferred_refresh = PREFERRED_REFRESH; + } else { + r->max_clock_khz = 0; + } +} + +static void +get_whitepoint_section(Uchar *c, struct whitePoints *wp) +{ + wp[0].white_x = WHITEX1; + wp[0].white_y = WHITEY1; + wp[1].white_x = WHITEX2; + wp[1].white_y = WHITEY2; + wp[0].index = WHITE_INDEX1; + wp[1].index = WHITE_INDEX2; + wp[0].white_gamma = WHITE_GAMMA1; + wp[1].white_gamma = WHITE_GAMMA2; +} + +static void +get_detailed_timing_section(Uchar *c, struct detailed_timings *r) +{ + r->clock = PIXEL_CLOCK; + r->h_active = H_ACTIVE; + r->h_blanking = H_BLANK; + r->v_active = V_ACTIVE; + r->v_blanking = V_BLANK; + r->h_sync_off = H_SYNC_OFF; + r->h_sync_width = H_SYNC_WIDTH; + r->v_sync_off = V_SYNC_OFF; + r->v_sync_width = V_SYNC_WIDTH; + r->h_size = H_SIZE; + r->v_size = V_SIZE; + r->h_border = H_BORDER; + r->v_border = V_BORDER; + r->interlaced = INTERLACED; + r->stereo = STEREO; + r->stereo_1 = STEREO1; + r->sync = SYNC_T; + r->misc = MISC; +} + +#define MAX_EDID_MINOR 4 + +static Bool +validate_version(int scrnIndex, struct edid_version *r) +{ + if (r->version != 1) { + xf86DrvMsg(scrnIndex, X_ERROR, "Unknown EDID version %d\n", + r->version); + return FALSE; + } + + if (r->revision > MAX_EDID_MINOR) + xf86DrvMsg(scrnIndex, X_WARNING, + "Assuming version 1.%d is compatible with 1.%d\n", + r->revision, MAX_EDID_MINOR); + + return TRUE; +} + +/* + * Returns true if HDMI, false if definitely not or unknown. + */ +Bool +xf86MonitorIsHDMI(xf86MonPtr mon) +{ + int i = 0, version, offset; + char *edid = NULL; + + if (!mon) + return FALSE; + + if (!(mon->flags & EDID_COMPLETE_RAWDATA)) + return FALSE; + + if (!mon->no_sections) + return FALSE; + + edid = (char *)mon->rawData; + if (!edid) + return FALSE; + + /* find the CEA extension block */ + for (i = 1; i <= mon->no_sections; i++) + if (edid[i * 128] == 0x02) + break; + if (i == mon->no_sections + 1) + return FALSE; + edid += (i * 128); + + version = edid[1]; + offset = edid[2]; + if (version < 3 || offset < 4) + return FALSE; + + /* walk the cea data blocks */ + for (i = 4; i < offset; i += (edid[i] & 0x1f) + 1) { + char *x = edid + i; + + /* find a vendor specific block */ + if ((x[0] & 0xe0) >> 5 == 0x03) { + int oui = (x[3] << 16) + (x[2] << 8) + x[1]; + + /* find the HDMI vendor OUI */ + if (oui == 0x000c03) + return TRUE; + } + } + + /* guess it's not HDMI after all */ + return FALSE; +} -- cgit v1.2.3