From a233ed27754bb0d373d63569d9a28aeb8fee5b82 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 15 Sep 2009 10:39:59 +0000 Subject: Checked in xorg-server-1.6.99.901 --- xorg-server/hw/xfree86/ddc/xf86DDC.c | 341 ----------------------------------- 1 file changed, 341 deletions(-) delete mode 100644 xorg-server/hw/xfree86/ddc/xf86DDC.c (limited to 'xorg-server/hw/xfree86/ddc/xf86DDC.c') 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 - */ - -/* - * 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 -#endif - -#include "misc.h" -#include "xf86.h" -#include "xf86_OSproc.h" -#include "xf86DDC.h" -#include "ddcPriv.h" -#include - -#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); -} -- cgit v1.2.3