/* * Copyright (c) 2007 NVIDIA, Corporation * * 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 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "g80_type.h" #include "g80_ddc.h" static Bool G80ReadPortMapping(int scrnIndex, G80Ptr pNv) { unsigned char *table2; unsigned char headerSize, entries; int i; CARD16 a; CARD32 b; /* Clear the i2c map to invalid */ for(i = 0; i < 4; i++) pNv->i2cMap[i].dac = pNv->i2cMap[i].sor = -1; if(*(CARD16*)pNv->table1 != 0xaa55) goto fail; a = *(CARD16*)(pNv->table1 + 0x36); table2 = (unsigned char*)pNv->table1 + a; if(table2[0] != 0x40) goto fail; b = *(CARD32*)(table2 + 6); if(b != 0x4edcbdcb) goto fail; headerSize = table2[1]; entries = table2[2]; for(i = 0; i < entries; i++) { CARD32 type, port; ORNum or; b = *(CARD32*)&table2[headerSize + 8*i]; type = b & 0xf; port = (b >> 4) & 0xf; or = ffs((b >> 24) & 0xf) - 1; if(type < 4 && port != 0xf) { switch(type) { case 0: /* CRT */ case 1: /* TV */ if(pNv->i2cMap[port].dac != -1) { xf86DrvMsg(scrnIndex, X_WARNING, "DDC routing table corrupt! DAC %i -> %i " "for port %i\n", or, pNv->i2cMap[port].dac, port); } pNv->i2cMap[port].dac = or; break; case 2: /* TMDS */ case 3: /* LVDS */ if(pNv->i2cMap[port].sor != -1) xf86DrvMsg(scrnIndex, X_WARNING, "DDC routing table corrupt! SOR %i -> %i " "for port %i\n", or, pNv->i2cMap[port].sor, port); pNv->i2cMap[port].sor = or; break; } } } xf86DrvMsg(scrnIndex, X_PROBED, "I2C map:\n"); for(i = 0; i < 4; i++) { if(pNv->i2cMap[i].dac != -1) xf86DrvMsg(scrnIndex, X_PROBED, " Bus %i -> DAC%i\n", i, pNv->i2cMap[i].dac); if(pNv->i2cMap[i].sor != -1) xf86DrvMsg(scrnIndex, X_PROBED, " Bus %i -> SOR%i\n", i, pNv->i2cMap[i].sor); } return TRUE; fail: xf86DrvMsg(scrnIndex, X_ERROR, "Couldn't find the DDC routing table. " "Mode setting will probably fail!\n"); return FALSE; } static void G80_I2CPutBits(I2CBusPtr b, int clock, int data) { G80Ptr pNv = G80PTR(xf86Screens[b->scrnIndex]); const int off = b->DriverPrivate.val; pNv->reg[(0x0000E138+off)/4] = 4 | clock | data << 1; } static void G80_I2CGetBits(I2CBusPtr b, int *clock, int *data) { G80Ptr pNv = G80PTR(xf86Screens[b->scrnIndex]); const int off = b->DriverPrivate.val; unsigned char val; val = pNv->reg[(0x0000E138+off)/4]; *clock = !!(val & 1); *data = !!(val & 2); } static xf86MonPtr G80ProbeDDCBus(ScrnInfoPtr pScrn, int bus) { G80Ptr pNv = G80PTR(pScrn); I2CBusPtr i2c; xf86MonPtr monInfo = NULL; const int off = bus * 0x18; /* Allocate the I2C bus structure */ i2c = xf86CreateI2CBusRec(); if(!i2c) return NULL; i2c->BusName = "DDC"; i2c->scrnIndex = pScrn->scrnIndex; i2c->I2CPutBits = G80_I2CPutBits; i2c->I2CGetBits = G80_I2CGetBits; i2c->ByteTimeout = 2200; /* VESA DDC spec 3 p. 43 (+10 %) */ i2c->StartTimeout = 550; i2c->BitTimeout = 40; i2c->ByteTimeout = 40; i2c->AcknTimeout = 40; i2c->DriverPrivate.val = off; if(!xf86I2CBusInit(i2c)) goto done; pNv->reg[(0x0000E138+off)/4] = 7; xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Probing for EDID on I2C bus %i...\n", bus); monInfo = xf86DoEDID_DDC2(pScrn->scrnIndex, i2c); pNv->reg[(0x0000E138+off)/4] = 3; if(monInfo) { xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "DDC detected a %s:\n", monInfo->features.input_type ? "DFP" : "CRT"); xf86PrintEDID(monInfo); } else { xf86DrvMsg(pScrn->scrnIndex, X_INFO, " ... none found\n"); } done: xf86DestroyI2CBusRec(i2c, TRUE, TRUE); return monInfo; } /* * Try DDC on each bus until we find one that works. */ Bool G80ProbeDDC(ScrnInfoPtr pScrn) { G80Ptr pNv = G80PTR(pScrn); xf86MonPtr monInfo; int port; Bool flatPanel; if(!G80ReadPortMapping(pScrn->scrnIndex, pNv)) return FALSE; for(port = 0; port < 4; port++) { if(pNv->i2cMap[port].dac == -1 && pNv->i2cMap[port].sor == -1) /* No outputs on this port. Skip it. */ continue; monInfo = G80ProbeDDCBus(pScrn, port); if(!monInfo) /* No EDID on this port. */ continue; flatPanel = (monInfo->features.input_type == 1); if(pNv->i2cMap[port].dac != -1 && G80DispDetectLoad(pScrn, pNv->i2cMap[port].dac)) { pNv->orType = DAC; pNv->or = pNv->i2cMap[port].dac; } else if(pNv->i2cMap[port].sor != -1) { pNv->orType = SOR; pNv->or = pNv->i2cMap[port].sor; } else { xf86DrvMsg(pScrn->scrnIndex, X_WARNING, "Saw an EDID on I2C port %i but no DAC load was " "detected and no SOR is connected to this port. Using " "DAC%i.\n", port, pNv->or); pNv->orType = DAC; pNv->or = pNv->i2cMap[port].dac; } xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "Found a %s on I2C port %i, assigning %s%i\n", flatPanel ? "flat panel" : "CRT", port, pNv->orType == SOR ? "SOR" : "DAC", pNv->or); pScrn->monitor->DDC = monInfo; xf86SetDDCproperties(pScrn, monInfo); return TRUE; } return FALSE; }