drivers/video/nvidia/nv_setup.c - kernel/bruno - Git at Google

  /***************************************************************************\
 |*                                                                           *|
 |*       Copyright 2003 NVIDIA, Corporation.  All rights reserved.           *|
 |*                                                                           *|
 |*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
 |*     international laws.  Users and possessors of this source code are     *|
 |*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
 |*     use this code in individual and commercial software.                  *|
 |*                                                                           *|
 |*     Any use of this source code must include,  in the user documenta-     *|
 |*     tion and  internal comments to the code,  notices to the end user     *|
 |*     as follows:                                                           *|
 |*                                                                           *|
 |*       Copyright 2003 NVIDIA, Corporation.  All rights reserved.           *|
 |*                                                                           *|
 |*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
 |*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
 |*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
 |*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
 |*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
 |*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
 |*     NVIDIA, CORPORATION  BE LIABLE FOR ANY SPECIAL,  INDIRECT,  INCI-     *|
 |*     DENTAL, OR CONSEQUENTIAL DAMAGES,  OR ANY DAMAGES  WHATSOEVER RE-     *|
 |*     SULTING FROM LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION     *|
 |*     OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,  ARISING OUT OF     *|
 |*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
 |*                                                                           *|
 |*     U.S. Government  End  Users.   This source code  is a "commercial     *|
 |*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
 |*     consisting  of "commercial  computer  software"  and  "commercial     *|
 |*     computer  software  documentation,"  as such  terms  are  used in     *|
 |*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
 |*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
 |*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
 |*     all U.S. Government End Users  acquire the source code  with only     *|
 |*     those rights set forth herein.                                        *|
 |*                                                                           *|
  \***************************************************************************/

 /*
  * GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
  * XFree86 'nv' driver, this source code is provided under MIT-style licensing
  * where the source code is provided "as is" without warranty of any kind.
  * The only usage restriction is for the copyright notices to be retained
  * whenever code is used.
  *
  * Antonino Daplas <adaplas@pol.net> 2005-03-11
  */

 #include <video/vga.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include "nv_type.h"
 #include "nv_local.h"
 #include "nv_proto.h"
 /*
  * Override VGA I/O routines.
  */
 void NVWriteCrtc(struct nvidia_par *par, u8 index, u8 value)
 {
 	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
 	VGA_WR08(par->PCIO, par->IOBase + 0x05, value);
 }
 u8 NVReadCrtc(struct nvidia_par *par, u8 index)
 {
 	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
 	return (VGA_RD08(par->PCIO, par->IOBase + 0x05));
 }
 void NVWriteGr(struct nvidia_par *par, u8 index, u8 value)
 {
 	VGA_WR08(par->PVIO, VGA_GFX_I, index);
 	VGA_WR08(par->PVIO, VGA_GFX_D, value);
 }
 u8 NVReadGr(struct nvidia_par *par, u8 index)
 {
 	VGA_WR08(par->PVIO, VGA_GFX_I, index);
 	return (VGA_RD08(par->PVIO, VGA_GFX_D));
 }
 void NVWriteSeq(struct nvidia_par *par, u8 index, u8 value)
 {
 	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
 	VGA_WR08(par->PVIO, VGA_SEQ_D, value);
 }
 u8 NVReadSeq(struct nvidia_par *par, u8 index)
 {
 	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
 	return (VGA_RD08(par->PVIO, VGA_SEQ_D));
 }
 void NVWriteAttr(struct nvidia_par *par, u8 index, u8 value)
 {
 	volatile u8 tmp;

 	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
 	if (par->paletteEnabled)
 		index &= ~0x20;
 	else
 		index |= 0x20;
 	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
 	VGA_WR08(par->PCIO, VGA_ATT_W, value);
 }
 u8 NVReadAttr(struct nvidia_par *par, u8 index)
 {
 	volatile u8 tmp;

 	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
 	if (par->paletteEnabled)
 		index &= ~0x20;
 	else
 		index |= 0x20;
 	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
 	return (VGA_RD08(par->PCIO, VGA_ATT_R));
 }
 void NVWriteMiscOut(struct nvidia_par *par, u8 value)
 {
 	VGA_WR08(par->PVIO, VGA_MIS_W, value);
 }
 u8 NVReadMiscOut(struct nvidia_par *par)
 {
 	return (VGA_RD08(par->PVIO, VGA_MIS_R));
 }
 #if 0
 void NVEnablePalette(struct nvidia_par *par)
 {
 	volatile u8 tmp;

 	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
 	VGA_WR08(par->PCIO, VGA_ATT_IW, 0x00);
 	par->paletteEnabled = 1;
 }
 void NVDisablePalette(struct nvidia_par *par)
 {
 	volatile u8 tmp;

 	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
 	VGA_WR08(par->PCIO, VGA_ATT_IW, 0x20);
 	par->paletteEnabled = 0;
 }
 #endif  /*  0  */
 void NVWriteDacMask(struct nvidia_par *par, u8 value)
 {
 	VGA_WR08(par->PDIO, VGA_PEL_MSK, value);
 }
 #if 0
 u8 NVReadDacMask(struct nvidia_par *par)
 {
 	return (VGA_RD08(par->PDIO, VGA_PEL_MSK));
 }
 #endif  /*  0  */
 void NVWriteDacReadAddr(struct nvidia_par *par, u8 value)
 {
 	VGA_WR08(par->PDIO, VGA_PEL_IR, value);
 }
 void NVWriteDacWriteAddr(struct nvidia_par *par, u8 value)
 {
 	VGA_WR08(par->PDIO, VGA_PEL_IW, value);
 }
 void NVWriteDacData(struct nvidia_par *par, u8 value)
 {
 	VGA_WR08(par->PDIO, VGA_PEL_D, value);
 }
 u8 NVReadDacData(struct nvidia_par *par)
 {
 	return (VGA_RD08(par->PDIO, VGA_PEL_D));
 }

 static int NVIsConnected(struct nvidia_par *par, int output)
 {
 	volatile u32 __iomem *PRAMDAC = par->PRAMDAC0;
 	u32 reg52C, reg608, dac0_reg608 = 0;
 	int present;

 	if (output) {
 	    dac0_reg608 = NV_RD32(PRAMDAC, 0x0608);
 	    PRAMDAC += 0x800;
 	}

 	reg52C = NV_RD32(PRAMDAC, 0x052C);
 	reg608 = NV_RD32(PRAMDAC, 0x0608);

 	NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);

 	NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
 	msleep(1);
 	NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) | 1);

 	NV_WR32(par->PRAMDAC0, 0x0610, 0x94050140);
 	NV_WR32(par->PRAMDAC0, 0x0608, NV_RD32(par->PRAMDAC0, 0x0608) |
 		0x00001000);

 	msleep(1);

 	present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? 1 : 0;

 	if (present)
 		printk("nvidiafb: CRTC%i analog found\n", output);
 	else
 		printk("nvidiafb: CRTC%i analog not found\n", output);

 	if (output)
 	    NV_WR32(par->PRAMDAC0, 0x0608, dac0_reg608);

 	NV_WR32(PRAMDAC, 0x052C, reg52C);
 	NV_WR32(PRAMDAC, 0x0608, reg608);

 	return present;
 }

 static void NVSelectHeadRegisters(struct nvidia_par *par, int head)
 {
 	if (head) {
 		par->PCIO = par->PCIO0 + 0x2000;
 		par->PCRTC = par->PCRTC0 + 0x800;
 		par->PRAMDAC = par->PRAMDAC0 + 0x800;
 		par->PDIO = par->PDIO0 + 0x2000;
 	} else {
 		par->PCIO = par->PCIO0;
 		par->PCRTC = par->PCRTC0;
 		par->PRAMDAC = par->PRAMDAC0;
 		par->PDIO = par->PDIO0;
 	}
 }

 static void nv4GetConfig(struct nvidia_par *par)
 {
 	if (NV_RD32(par->PFB, 0x0000) & 0x00000100) {
 		par->RamAmountKBytes =
 		    ((NV_RD32(par->PFB, 0x0000) >> 12) & 0x0F) * 1024 * 2 +
 		    1024 * 2;
 	} else {
 		switch (NV_RD32(par->PFB, 0x0000) & 0x00000003) {
 		case 0:
 			par->RamAmountKBytes = 1024 * 32;
 			break;
 		case 1:
 			par->RamAmountKBytes = 1024 * 4;
 			break;
 		case 2:
 			par->RamAmountKBytes = 1024 * 8;
 			break;
 		case 3:
 		default:
 			par->RamAmountKBytes = 1024 * 16;
 			break;
 		}
 	}
 	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & 0x00000040) ?
 	    14318 : 13500;
 	par->CURSOR = &par->PRAMIN[0x1E00];
 	par->MinVClockFreqKHz = 12000;
 	par->MaxVClockFreqKHz = 350000;
 }

 static void nv10GetConfig(struct nvidia_par *par)
 {
 	struct pci_dev *dev;
 	u32 implementation = par->Chipset & 0x0ff0;

 #ifdef __BIG_ENDIAN
 	/* turn on big endian register access */
 	if (!(NV_RD32(par->PMC, 0x0004) & 0x01000001)) {
 		NV_WR32(par->PMC, 0x0004, 0x01000001);
 		mb();
 	}
 #endif

 	dev = pci_get_bus_and_slot(0, 1);
 	if ((par->Chipset & 0xffff) == 0x01a0) {
 		u32 amt;

 		pci_read_config_dword(dev, 0x7c, &amt);
 		par->RamAmountKBytes = (((amt >> 6) & 31) + 1) * 1024;
 	} else if ((par->Chipset & 0xffff) == 0x01f0) {
 		u32 amt;

 		pci_read_config_dword(dev, 0x84, &amt);
 		par->RamAmountKBytes = (((amt >> 4) & 127) + 1) * 1024;
 	} else {
 		par->RamAmountKBytes =
 		    (NV_RD32(par->PFB, 0x020C) & 0xFFF00000) >> 10;
 	}
 	pci_dev_put(dev);

 	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 6)) ?
 	    14318 : 13500;

 	if (par->twoHeads && (implementation != 0x0110)) {
 		if (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 22))
 			par->CrystalFreqKHz = 27000;
 	}

 	par->CURSOR = NULL;	/* can't set this here */
 	par->MinVClockFreqKHz = 12000;
 	par->MaxVClockFreqKHz = par->twoStagePLL ? 400000 : 350000;
 }

 int NVCommonSetup(struct fb_info *info)
 {
 	struct nvidia_par *par = info->par;
 	struct fb_var_screeninfo *var;
 	u16 implementation = par->Chipset & 0x0ff0;
 	u8 *edidA = NULL, *edidB = NULL;
 	struct fb_monspecs *monitorA, *monitorB;
 	struct fb_monspecs *monA = NULL, *monB = NULL;
 	int mobile = 0;
 	int tvA = 0;
 	int tvB = 0;
 	int FlatPanel = -1;	/* really means the CRTC is slaved */
 	int Television = 0;
 	int err = 0;

 	var = kzalloc(sizeof(struct fb_var_screeninfo), GFP_KERNEL);
 	monitorA = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);
 	monitorB = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);

 	if (!var || !monitorA || !monitorB) {
 		err = -ENOMEM;
 		goto done;
 	}

 	par->PRAMIN = par->REGS + (0x00710000 / 4);
 	par->PCRTC0 = par->REGS + (0x00600000 / 4);
 	par->PRAMDAC0 = par->REGS + (0x00680000 / 4);
 	par->PFB = par->REGS + (0x00100000 / 4);
 	par->PFIFO = par->REGS + (0x00002000 / 4);
 	par->PGRAPH = par->REGS + (0x00400000 / 4);
 	par->PEXTDEV = par->REGS + (0x00101000 / 4);
 	par->PTIMER = par->REGS + (0x00009000 / 4);
 	par->PMC = par->REGS + (0x00000000 / 4);
 	par->FIFO = par->REGS + (0x00800000 / 4);

 	/* 8 bit registers */
 	par->PCIO0 = (u8 __iomem *) par->REGS + 0x00601000;
 	par->PDIO0 = (u8 __iomem *) par->REGS + 0x00681000;
 	par->PVIO = (u8 __iomem *) par->REGS + 0x000C0000;

 	par->twoHeads = (par->Architecture >= NV_ARCH_10) &&
 	    (implementation != 0x0100) &&
 	    (implementation != 0x0150) &&
 	    (implementation != 0x01A0) && (implementation != 0x0200);

 	par->fpScaler = (par->FpScale && par->twoHeads &&
 			 (implementation != 0x0110));

 	par->twoStagePLL = (implementation == 0x0310) ||
 	    (implementation == 0x0340) || (par->Architecture >= NV_ARCH_40);

 	par->WaitVSyncPossible = (par->Architecture >= NV_ARCH_10) &&
 	    (implementation != 0x0100);

 	par->BlendingPossible = ((par->Chipset & 0xffff) != 0x0020);

 	/* look for known laptop chips */
 	switch (par->Chipset & 0xffff) {
 	case 0x0112:
 	case 0x0174:
 	case 0x0175:
 	case 0x0176:
 	case 0x0177:
 	case 0x0179:
 	case 0x017C:
 	case 0x017D:
 	case 0x0186:
 	case 0x0187:
 	case 0x018D:
 	case 0x01D7:
 	case 0x0228:
 	case 0x0286:
 	case 0x028C:
 	case 0x0316:
 	case 0x0317:
 	case 0x031A:
 	case 0x031B:
 	case 0x031C:
 	case 0x031D:
 	case 0x031E:
 	case 0x031F:
 	case 0x0324:
 	case 0x0325:
 	case 0x0328:
 	case 0x0329:
 	case 0x032C:
 	case 0x032D:
 	case 0x0347:
 	case 0x0348:
 	case 0x0349:
 	case 0x034B:
 	case 0x034C:
 	case 0x0160:
 	case 0x0166:
 	case 0x0169:
 	case 0x016B:
 	case 0x016C:
 	case 0x016D:
 	case 0x00C8:
 	case 0x00CC:
 	case 0x0144:
 	case 0x0146:
 	case 0x0147:
 	case 0x0148:
 	case 0x0098:
 	case 0x0099:
 		mobile = 1;
 		break;
 	default:
 		break;
 	}

 	if (par->Architecture == NV_ARCH_04)
 		nv4GetConfig(par);
 	else
 		nv10GetConfig(par);

 	NVSelectHeadRegisters(par, 0);

 	NVLockUnlock(par, 0);

 	par->IOBase = (NVReadMiscOut(par) & 0x01) ? 0x3d0 : 0x3b0;

 	par->Television = 0;

 	nvidia_create_i2c_busses(par);
 	if (!par->twoHeads) {
 		par->CRTCnumber = 0;
 		if (nvidia_probe_i2c_connector(info, 1, &edidA))
 			nvidia_probe_of_connector(info, 1, &edidA);
 		if (edidA && !fb_parse_edid(edidA, var)) {
 			printk("nvidiafb: EDID found from BUS1\n");
 			monA = monitorA;
 			fb_edid_to_monspecs(edidA, monA);
 			FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;

 			/* NV4 doesn't support FlatPanels */
 			if ((par->Chipset & 0x0fff) <= 0x0020)
 				FlatPanel = 0;
 		} else {
 			VGA_WR08(par->PCIO, 0x03D4, 0x28);
 			if (VGA_RD08(par->PCIO, 0x03D5) & 0x80) {
 				VGA_WR08(par->PCIO, 0x03D4, 0x33);
 				if (!(VGA_RD08(par->PCIO, 0x03D5) & 0x01))
 					Television = 1;
 				FlatPanel = 1;
 			} else {
 				FlatPanel = 0;
 			}
 			printk("nvidiafb: HW is currently programmed for %s\n",
 			       FlatPanel ? (Television ? "TV" : "DFP") :
 			       "CRT");
 		}

 		if (par->FlatPanel == -1) {
 			par->FlatPanel = FlatPanel;
 			par->Television = Television;
 		} else {
 			printk("nvidiafb: Forcing display type to %s as "
 			       "specified\n", par->FlatPanel ? "DFP" : "CRT");
 		}
 	} else {
 		u8 outputAfromCRTC, outputBfromCRTC;
 		int CRTCnumber = -1;
 		u8 slaved_on_A, slaved_on_B;
 		int analog_on_A, analog_on_B;
 		u32 oldhead;
 		u8 cr44;

 		if (implementation != 0x0110) {
 			if (NV_RD32(par->PRAMDAC0, 0x0000052C) & 0x100)
 				outputAfromCRTC = 1;
 			else
 				outputAfromCRTC = 0;
 			if (NV_RD32(par->PRAMDAC0, 0x0000252C) & 0x100)
 				outputBfromCRTC = 1;
 			else
 				outputBfromCRTC = 0;
 			analog_on_A = NVIsConnected(par, 0);
 			analog_on_B = NVIsConnected(par, 1);
 		} else {
 			outputAfromCRTC = 0;
 			outputBfromCRTC = 1;
 			analog_on_A = 0;
 			analog_on_B = 0;
 		}

 		VGA_WR08(par->PCIO, 0x03D4, 0x44);
 		cr44 = VGA_RD08(par->PCIO, 0x03D5);

 		VGA_WR08(par->PCIO, 0x03D5, 3);
 		NVSelectHeadRegisters(par, 1);
 		NVLockUnlock(par, 0);

 		VGA_WR08(par->PCIO, 0x03D4, 0x28);
 		slaved_on_B = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
 		if (slaved_on_B) {
 			VGA_WR08(par->PCIO, 0x03D4, 0x33);
 			tvB = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
 		}

 		VGA_WR08(par->PCIO, 0x03D4, 0x44);
 		VGA_WR08(par->PCIO, 0x03D5, 0);
 		NVSelectHeadRegisters(par, 0);
 		NVLockUnlock(par, 0);

 		VGA_WR08(par->PCIO, 0x03D4, 0x28);
 		slaved_on_A = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
 		if (slaved_on_A) {
 			VGA_WR08(par->PCIO, 0x03D4, 0x33);
 			tvA = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
 		}

 		oldhead = NV_RD32(par->PCRTC0, 0x00000860);
 		NV_WR32(par->PCRTC0, 0x00000860, oldhead | 0x00000010);

 		if (nvidia_probe_i2c_connector(info, 1, &edidA))
 			nvidia_probe_of_connector(info, 1, &edidA);
 		if (edidA && !fb_parse_edid(edidA, var)) {
 			printk("nvidiafb: EDID found from BUS1\n");
 			monA = monitorA;
 			fb_edid_to_monspecs(edidA, monA);
 		}

 		if (nvidia_probe_i2c_connector(info, 2, &edidB))
 			nvidia_probe_of_connector(info, 2, &edidB);
 		if (edidB && !fb_parse_edid(edidB, var)) {
 			printk("nvidiafb: EDID found from BUS2\n");
 			monB = monitorB;
 			fb_edid_to_monspecs(edidB, monB);
 		}

 		if (slaved_on_A && !tvA) {
 			CRTCnumber = 0;
 			FlatPanel = 1;
 			printk("nvidiafb: CRTC 0 is currently programmed for "
 			       "DFP\n");
 		} else if (slaved_on_B && !tvB) {
 			CRTCnumber = 1;
 			FlatPanel = 1;
 			printk("nvidiafb: CRTC 1 is currently programmed "
 			       "for DFP\n");
 		} else if (analog_on_A) {
 			CRTCnumber = outputAfromCRTC;
 			FlatPanel = 0;
 			printk("nvidiafb: CRTC %i appears to have a "
 			       "CRT attached\n", CRTCnumber);
 		} else if (analog_on_B) {
 			CRTCnumber = outputBfromCRTC;
 			FlatPanel = 0;
 			printk("nvidiafb: CRTC %i appears to have a "
 			       "CRT attached\n", CRTCnumber);
 		} else if (slaved_on_A) {
 			CRTCnumber = 0;
 			FlatPanel = 1;
 			Television = 1;
 			printk("nvidiafb: CRTC 0 is currently programmed "
 			       "for TV\n");
 		} else if (slaved_on_B) {
 			CRTCnumber = 1;
 			FlatPanel = 1;
 			Television = 1;
 			printk("nvidiafb: CRTC 1 is currently programmed for "
 			       "TV\n");
 		} else if (monA) {
 			FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;
 		} else if (monB) {
 			FlatPanel = (monB->input & FB_DISP_DDI) ? 1 : 0;
 		}

 		if (par->FlatPanel == -1) {
 			if (FlatPanel != -1) {
 				par->FlatPanel = FlatPanel;
 				par->Television = Television;
 			} else {
 				printk("nvidiafb: Unable to detect display "
 				       "type...\n");
 				if (mobile) {
 					printk("...On a laptop, assuming "
 					       "DFP\n");
 					par->FlatPanel = 1;
 				} else {
 					printk("...Using default of CRT\n");
 					par->FlatPanel = 0;
 				}
 			}
 		} else {
 			printk("nvidiafb: Forcing display type to %s as "
 			       "specified\n", par->FlatPanel ? "DFP" : "CRT");
 		}

 		if (par->CRTCnumber == -1) {
 			if (CRTCnumber != -1)
 				par->CRTCnumber = CRTCnumber;
 			else {
 				printk("nvidiafb: Unable to detect which "
 				       "CRTCNumber...\n");
 				if (par->FlatPanel)
 					par->CRTCnumber = 1;
 				else
 					par->CRTCnumber = 0;
 				printk("...Defaulting to CRTCNumber %i\n",
 				       par->CRTCnumber);
 			}
 		} else {
 			printk("nvidiafb: Forcing CRTCNumber %i as "
 			       "specified\n", par->CRTCnumber);
 		}

 		if (monA) {
 			if (((monA->input & FB_DISP_DDI) &&
 			     par->FlatPanel) ||
 			    ((!(monA->input & FB_DISP_DDI)) &&
 			     !par->FlatPanel)) {
 				if (monB) {
 					fb_destroy_modedb(monB->modedb);
 					monB = NULL;
 				}
 			} else {
 				fb_destroy_modedb(monA->modedb);
 				monA = NULL;
 			}
 		}

 		if (monB) {
 			if (((monB->input & FB_DISP_DDI) &&
 			     !par->FlatPanel) ||
 			    ((!(monB->input & FB_DISP_DDI)) &&
 			     par->FlatPanel)) {
 				fb_destroy_modedb(monB->modedb);
 				monB = NULL;
 			} else
 				monA = monB;
 		}

 		if (implementation == 0x0110)
 			cr44 = par->CRTCnumber * 0x3;

 		NV_WR32(par->PCRTC0, 0x00000860, oldhead);

 		VGA_WR08(par->PCIO, 0x03D4, 0x44);
 		VGA_WR08(par->PCIO, 0x03D5, cr44);
 		NVSelectHeadRegisters(par, par->CRTCnumber);
 	}

 	printk("nvidiafb: Using %s on CRTC %i\n",
 	       par->FlatPanel ? (par->Television ? "TV" : "DFP") : "CRT",
 	       par->CRTCnumber);

 	if (par->FlatPanel && !par->Television) {
 		par->fpWidth = NV_RD32(par->PRAMDAC, 0x0820) + 1;
 		par->fpHeight = NV_RD32(par->PRAMDAC, 0x0800) + 1;
 		par->fpSyncs = NV_RD32(par->PRAMDAC, 0x0848) & 0x30000033;

 		printk("nvidiafb: Panel size is %i x %i\n", par->fpWidth, par->fpHeight);
 	}

 	if (monA)
 		info->monspecs = *monA;

 	if (!par->FlatPanel || !par->twoHeads)
 		par->FPDither = 0;

 	par->LVDS = 0;
 	if (par->FlatPanel && par->twoHeads) {
 		NV_WR32(par->PRAMDAC0, 0x08B0, 0x00010004);
 		if (NV_RD32(par->PRAMDAC0, 0x08b4) & 1)
 			par->LVDS = 1;
 		printk("nvidiafb: Panel is %s\n", par->LVDS ? "LVDS" : "TMDS");
 	}

 	kfree(edidA);
 	kfree(edidB);
 done:
 	kfree(var);
 	kfree(monitorA);
 	kfree(monitorB);
 	return err;
 }
	/***************************************************************************\
	\|* *\|
	\|* Copyright 2003 NVIDIA, Corporation. All rights reserved. *\|
	\|* *\|
	\|* NOTICE TO USER: The source code is copyrighted under U.S. and *\|
	\|* international laws. Users and possessors of this source code are *\|
	\|* hereby granted a nonexclusive, royalty-free copyright license to *\|
	\|* use this code in individual and commercial software. *\|
	\|* *\|
	\|* Any use of this source code must include, in the user documenta- *\|
	\|* tion and internal comments to the code, notices to the end user *\|
	\|* as follows: *\|
	\|* *\|
	\|* Copyright 2003 NVIDIA, Corporation. All rights reserved. *\|
	\|* *\|
	\|* NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY *\|
	\|* OF THIS SOURCE CODE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" *\|
	\|* WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND. NVIDIA, CORPOR- *\|
	\|* ATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOURCE CODE, *\|
	\|* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE- *\|
	\|* MENT, AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL *\|
	\|* NVIDIA, CORPORATION BE LIABLE FOR ANY SPECIAL, INDIRECT, INCI- *\|
	\|* DENTAL, OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RE- *\|
	\|* SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION *\|
	\|* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF *\|
	\|* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE. *\|
	\|* *\|
	\|* U.S. Government End Users. This source code is a "commercial *\|
	\|* item," as that term is defined at 48 C.F.R. 2.101 (OCT 1995), *\|
	\|* consisting of "commercial computer software" and "commercial *\|
	\|* computer software documentation," as such terms are used in *\|
	\|* 48 C.F.R. 12.212 (SEPT 1995) and is provided to the U.S. Govern- *\|
	\|* ment only as a commercial end item. Consistent with 48 C.F.R. *\|
	\|* 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (JUNE 1995), *\|
	\|* all U.S. Government End Users acquire the source code with only *\|
	\|* those rights set forth herein. *\|
	\|* *\|
	\***************************************************************************/

	/*
	* GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
	* XFree86 'nv' driver, this source code is provided under MIT-style licensing
	* where the source code is provided "as is" without warranty of any kind.
	* The only usage restriction is for the copyright notices to be retained
	* whenever code is used.
	*
	* Antonino Daplas <adaplas@pol.net> 2005-03-11
	*/

	#include <video/vga.h>
	#include <linux/delay.h>
	#include <linux/pci.h>
	#include <linux/slab.h>
	#include "nv_type.h"
	#include "nv_local.h"
	#include "nv_proto.h"
	/*
	* Override VGA I/O routines.
	*/
	void NVWriteCrtc(struct nvidia_par *par, u8 index, u8 value)
	{
	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
	VGA_WR08(par->PCIO, par->IOBase + 0x05, value);
	}
	u8 NVReadCrtc(struct nvidia_par *par, u8 index)
	{
	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
	return (VGA_RD08(par->PCIO, par->IOBase + 0x05));
	}
	void NVWriteGr(struct nvidia_par *par, u8 index, u8 value)
	{
	VGA_WR08(par->PVIO, VGA_GFX_I, index);
	VGA_WR08(par->PVIO, VGA_GFX_D, value);
	}
	u8 NVReadGr(struct nvidia_par *par, u8 index)
	{
	VGA_WR08(par->PVIO, VGA_GFX_I, index);
	return (VGA_RD08(par->PVIO, VGA_GFX_D));
	}
	void NVWriteSeq(struct nvidia_par *par, u8 index, u8 value)
	{
	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
	VGA_WR08(par->PVIO, VGA_SEQ_D, value);
	}
	u8 NVReadSeq(struct nvidia_par *par, u8 index)
	{
	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
	return (VGA_RD08(par->PVIO, VGA_SEQ_D));
	}
	void NVWriteAttr(struct nvidia_par *par, u8 index, u8 value)
	{
	volatile u8 tmp;

	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
	if (par->paletteEnabled)
	index &= ~0x20;
	else
	index \|= 0x20;
	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
	VGA_WR08(par->PCIO, VGA_ATT_W, value);
	}
	u8 NVReadAttr(struct nvidia_par *par, u8 index)
	{
	volatile u8 tmp;

	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
	if (par->paletteEnabled)
	index &= ~0x20;
	else
	index \|= 0x20;
	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
	return (VGA_RD08(par->PCIO, VGA_ATT_R));
	}
	void NVWriteMiscOut(struct nvidia_par *par, u8 value)
	{
	VGA_WR08(par->PVIO, VGA_MIS_W, value);
	}
	u8 NVReadMiscOut(struct nvidia_par *par)
	{
	return (VGA_RD08(par->PVIO, VGA_MIS_R));
	}
	#if 0
	void NVEnablePalette(struct nvidia_par *par)
	{
	volatile u8 tmp;

	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
	VGA_WR08(par->PCIO, VGA_ATT_IW, 0x00);
	par->paletteEnabled = 1;
	}
	void NVDisablePalette(struct nvidia_par *par)
	{
	volatile u8 tmp;

	tmp = VGA_RD08(par->PCIO, par->IOBase + 0x0a);
	VGA_WR08(par->PCIO, VGA_ATT_IW, 0x20);
	par->paletteEnabled = 0;
	}
	#endif /* 0 */
	void NVWriteDacMask(struct nvidia_par *par, u8 value)
	{
	VGA_WR08(par->PDIO, VGA_PEL_MSK, value);
	}
	#if 0
	u8 NVReadDacMask(struct nvidia_par *par)
	{
	return (VGA_RD08(par->PDIO, VGA_PEL_MSK));
	}
	#endif /* 0 */
	void NVWriteDacReadAddr(struct nvidia_par *par, u8 value)
	{
	VGA_WR08(par->PDIO, VGA_PEL_IR, value);
	}
	void NVWriteDacWriteAddr(struct nvidia_par *par, u8 value)
	{
	VGA_WR08(par->PDIO, VGA_PEL_IW, value);
	}
	void NVWriteDacData(struct nvidia_par *par, u8 value)
	{
	VGA_WR08(par->PDIO, VGA_PEL_D, value);
	}
	u8 NVReadDacData(struct nvidia_par *par)
	{
	return (VGA_RD08(par->PDIO, VGA_PEL_D));
	}

	static int NVIsConnected(struct nvidia_par *par, int output)
	{
	volatile u32 __iomem *PRAMDAC = par->PRAMDAC0;
	u32 reg52C, reg608, dac0_reg608 = 0;
	int present;

	if (output) {
	dac0_reg608 = NV_RD32(PRAMDAC, 0x0608);
	PRAMDAC += 0x800;
	}

	reg52C = NV_RD32(PRAMDAC, 0x052C);
	reg608 = NV_RD32(PRAMDAC, 0x0608);

	NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);

	NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
	msleep(1);
	NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) \| 1);

	NV_WR32(par->PRAMDAC0, 0x0610, 0x94050140);
	NV_WR32(par->PRAMDAC0, 0x0608, NV_RD32(par->PRAMDAC0, 0x0608) \|
	0x00001000);

	msleep(1);

	present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? 1 : 0;

	if (present)
	printk("nvidiafb: CRTC%i analog found\n", output);
	else
	printk("nvidiafb: CRTC%i analog not found\n", output);

	if (output)
	NV_WR32(par->PRAMDAC0, 0x0608, dac0_reg608);

	NV_WR32(PRAMDAC, 0x052C, reg52C);
	NV_WR32(PRAMDAC, 0x0608, reg608);

	return present;
	}

	static void NVSelectHeadRegisters(struct nvidia_par *par, int head)
	{
	if (head) {
	par->PCIO = par->PCIO0 + 0x2000;
	par->PCRTC = par->PCRTC0 + 0x800;
	par->PRAMDAC = par->PRAMDAC0 + 0x800;
	par->PDIO = par->PDIO0 + 0x2000;
	} else {
	par->PCIO = par->PCIO0;
	par->PCRTC = par->PCRTC0;
	par->PRAMDAC = par->PRAMDAC0;
	par->PDIO = par->PDIO0;
	}
	}

	static void nv4GetConfig(struct nvidia_par *par)
	{
	if (NV_RD32(par->PFB, 0x0000) & 0x00000100) {
	par->RamAmountKBytes =
	((NV_RD32(par->PFB, 0x0000) >> 12) & 0x0F) * 1024 * 2 +
	1024 * 2;
	} else {
	switch (NV_RD32(par->PFB, 0x0000) & 0x00000003) {
	case 0:
	par->RamAmountKBytes = 1024 * 32;
	break;
	case 1:
	par->RamAmountKBytes = 1024 * 4;
	break;
	case 2:
	par->RamAmountKBytes = 1024 * 8;
	break;
	case 3:
	default:
	par->RamAmountKBytes = 1024 * 16;
	break;
	}
	}
	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & 0x00000040) ?
	14318 : 13500;
	par->CURSOR = &par->PRAMIN[0x1E00];
	par->MinVClockFreqKHz = 12000;
	par->MaxVClockFreqKHz = 350000;
	}

	static void nv10GetConfig(struct nvidia_par *par)
	{
	struct pci_dev *dev;
	u32 implementation = par->Chipset & 0x0ff0;

	#ifdef __BIG_ENDIAN
	/* turn on big endian register access */
	if (!(NV_RD32(par->PMC, 0x0004) & 0x01000001)) {
	NV_WR32(par->PMC, 0x0004, 0x01000001);
	mb();
	}
	#endif

	dev = pci_get_bus_and_slot(0, 1);
	if ((par->Chipset & 0xffff) == 0x01a0) {
	u32 amt;

	pci_read_config_dword(dev, 0x7c, &amt);
	par->RamAmountKBytes = (((amt >> 6) & 31) + 1) * 1024;
	} else if ((par->Chipset & 0xffff) == 0x01f0) {
	u32 amt;

	pci_read_config_dword(dev, 0x84, &amt);
	par->RamAmountKBytes = (((amt >> 4) & 127) + 1) * 1024;
	} else {
	par->RamAmountKBytes =
	(NV_RD32(par->PFB, 0x020C) & 0xFFF00000) >> 10;
	}
	pci_dev_put(dev);

	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 6)) ?
	14318 : 13500;

	if (par->twoHeads && (implementation != 0x0110)) {
	if (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 22))
	par->CrystalFreqKHz = 27000;
	}

	par->CURSOR = NULL; /* can't set this here */
	par->MinVClockFreqKHz = 12000;
	par->MaxVClockFreqKHz = par->twoStagePLL ? 400000 : 350000;
	}

	int NVCommonSetup(struct fb_info *info)
	{
	struct nvidia_par *par = info->par;
	struct fb_var_screeninfo *var;
	u16 implementation = par->Chipset & 0x0ff0;
	u8 edidA = NULL, edidB = NULL;
	struct fb_monspecs monitorA, monitorB;
	struct fb_monspecs monA = NULL, monB = NULL;
	int mobile = 0;
	int tvA = 0;
	int tvB = 0;
	int FlatPanel = -1; /* really means the CRTC is slaved */
	int Television = 0;
	int err = 0;

	var = kzalloc(sizeof(struct fb_var_screeninfo), GFP_KERNEL);
	monitorA = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);
	monitorB = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);

	if (!var \|\| !monitorA \|\| !monitorB) {
	err = -ENOMEM;
	goto done;
	}

	par->PRAMIN = par->REGS + (0x00710000 / 4);
	par->PCRTC0 = par->REGS + (0x00600000 / 4);
	par->PRAMDAC0 = par->REGS + (0x00680000 / 4);
	par->PFB = par->REGS + (0x00100000 / 4);
	par->PFIFO = par->REGS + (0x00002000 / 4);
	par->PGRAPH = par->REGS + (0x00400000 / 4);
	par->PEXTDEV = par->REGS + (0x00101000 / 4);
	par->PTIMER = par->REGS + (0x00009000 / 4);
	par->PMC = par->REGS + (0x00000000 / 4);
	par->FIFO = par->REGS + (0x00800000 / 4);

	/* 8 bit registers */
	par->PCIO0 = (u8 __iomem *) par->REGS + 0x00601000;
	par->PDIO0 = (u8 __iomem *) par->REGS + 0x00681000;
	par->PVIO = (u8 __iomem *) par->REGS + 0x000C0000;

	par->twoHeads = (par->Architecture >= NV_ARCH_10) &&
	(implementation != 0x0100) &&
	(implementation != 0x0150) &&
	(implementation != 0x01A0) && (implementation != 0x0200);

	par->fpScaler = (par->FpScale && par->twoHeads &&
	(implementation != 0x0110));

	par->twoStagePLL = (implementation == 0x0310) \|\|
	(implementation == 0x0340) \|\| (par->Architecture >= NV_ARCH_40);

	par->WaitVSyncPossible = (par->Architecture >= NV_ARCH_10) &&
	(implementation != 0x0100);

	par->BlendingPossible = ((par->Chipset & 0xffff) != 0x0020);

	/* look for known laptop chips */
	switch (par->Chipset & 0xffff) {
	case 0x0112:
	case 0x0174:
	case 0x0175:
	case 0x0176:
	case 0x0177:
	case 0x0179:
	case 0x017C:
	case 0x017D:
	case 0x0186:
	case 0x0187:
	case 0x018D:
	case 0x01D7:
	case 0x0228:
	case 0x0286:
	case 0x028C:
	case 0x0316:
	case 0x0317:
	case 0x031A:
	case 0x031B:
	case 0x031C:
	case 0x031D:
	case 0x031E:
	case 0x031F:
	case 0x0324:
	case 0x0325:
	case 0x0328:
	case 0x0329:
	case 0x032C:
	case 0x032D:
	case 0x0347:
	case 0x0348:
	case 0x0349:
	case 0x034B:
	case 0x034C:
	case 0x0160:
	case 0x0166:
	case 0x0169:
	case 0x016B:
	case 0x016C:
	case 0x016D:
	case 0x00C8:
	case 0x00CC:
	case 0x0144:
	case 0x0146:
	case 0x0147:
	case 0x0148:
	case 0x0098:
	case 0x0099:
	mobile = 1;
	break;
	default:
	break;
	}

	if (par->Architecture == NV_ARCH_04)
	nv4GetConfig(par);
	else
	nv10GetConfig(par);

	NVSelectHeadRegisters(par, 0);

	NVLockUnlock(par, 0);

	par->IOBase = (NVReadMiscOut(par) & 0x01) ? 0x3d0 : 0x3b0;

	par->Television = 0;

	nvidia_create_i2c_busses(par);
	if (!par->twoHeads) {
	par->CRTCnumber = 0;
	if (nvidia_probe_i2c_connector(info, 1, &edidA))
	nvidia_probe_of_connector(info, 1, &edidA);
	if (edidA && !fb_parse_edid(edidA, var)) {
	printk("nvidiafb: EDID found from BUS1\n");
	monA = monitorA;
	fb_edid_to_monspecs(edidA, monA);
	FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;

	/* NV4 doesn't support FlatPanels */
	if ((par->Chipset & 0x0fff) <= 0x0020)
	FlatPanel = 0;
	} else {
	VGA_WR08(par->PCIO, 0x03D4, 0x28);
	if (VGA_RD08(par->PCIO, 0x03D5) & 0x80) {
	VGA_WR08(par->PCIO, 0x03D4, 0x33);
	if (!(VGA_RD08(par->PCIO, 0x03D5) & 0x01))
	Television = 1;
	FlatPanel = 1;
	} else {
	FlatPanel = 0;
	}
	printk("nvidiafb: HW is currently programmed for %s\n",
	FlatPanel ? (Television ? "TV" : "DFP") :
	"CRT");
	}

	if (par->FlatPanel == -1) {
	par->FlatPanel = FlatPanel;
	par->Television = Television;
	} else {
	printk("nvidiafb: Forcing display type to %s as "
	"specified\n", par->FlatPanel ? "DFP" : "CRT");
	}
	} else {
	u8 outputAfromCRTC, outputBfromCRTC;
	int CRTCnumber = -1;
	u8 slaved_on_A, slaved_on_B;
	int analog_on_A, analog_on_B;
	u32 oldhead;
	u8 cr44;

	if (implementation != 0x0110) {
	if (NV_RD32(par->PRAMDAC0, 0x0000052C) & 0x100)
	outputAfromCRTC = 1;
	else
	outputAfromCRTC = 0;
	if (NV_RD32(par->PRAMDAC0, 0x0000252C) & 0x100)
	outputBfromCRTC = 1;
	else
	outputBfromCRTC = 0;
	analog_on_A = NVIsConnected(par, 0);
	analog_on_B = NVIsConnected(par, 1);
	} else {
	outputAfromCRTC = 0;
	outputBfromCRTC = 1;
	analog_on_A = 0;
	analog_on_B = 0;
	}

	VGA_WR08(par->PCIO, 0x03D4, 0x44);
	cr44 = VGA_RD08(par->PCIO, 0x03D5);

	VGA_WR08(par->PCIO, 0x03D5, 3);
	NVSelectHeadRegisters(par, 1);
	NVLockUnlock(par, 0);

	VGA_WR08(par->PCIO, 0x03D4, 0x28);
	slaved_on_B = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
	if (slaved_on_B) {
	VGA_WR08(par->PCIO, 0x03D4, 0x33);
	tvB = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
	}

	VGA_WR08(par->PCIO, 0x03D4, 0x44);
	VGA_WR08(par->PCIO, 0x03D5, 0);
	NVSelectHeadRegisters(par, 0);
	NVLockUnlock(par, 0);

	VGA_WR08(par->PCIO, 0x03D4, 0x28);
	slaved_on_A = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
	if (slaved_on_A) {
	VGA_WR08(par->PCIO, 0x03D4, 0x33);
	tvA = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
	}

	oldhead = NV_RD32(par->PCRTC0, 0x00000860);
	NV_WR32(par->PCRTC0, 0x00000860, oldhead \| 0x00000010);

	if (nvidia_probe_i2c_connector(info, 1, &edidA))
	nvidia_probe_of_connector(info, 1, &edidA);
	if (edidA && !fb_parse_edid(edidA, var)) {
	printk("nvidiafb: EDID found from BUS1\n");
	monA = monitorA;
	fb_edid_to_monspecs(edidA, monA);
	}

	if (nvidia_probe_i2c_connector(info, 2, &edidB))
	nvidia_probe_of_connector(info, 2, &edidB);
	if (edidB && !fb_parse_edid(edidB, var)) {
	printk("nvidiafb: EDID found from BUS2\n");
	monB = monitorB;
	fb_edid_to_monspecs(edidB, monB);
	}

	if (slaved_on_A && !tvA) {
	CRTCnumber = 0;
	FlatPanel = 1;
	printk("nvidiafb: CRTC 0 is currently programmed for "
	"DFP\n");
	} else if (slaved_on_B && !tvB) {
	CRTCnumber = 1;
	FlatPanel = 1;
	printk("nvidiafb: CRTC 1 is currently programmed "
	"for DFP\n");
	} else if (analog_on_A) {
	CRTCnumber = outputAfromCRTC;
	FlatPanel = 0;
	printk("nvidiafb: CRTC %i appears to have a "
	"CRT attached\n", CRTCnumber);
	} else if (analog_on_B) {
	CRTCnumber = outputBfromCRTC;
	FlatPanel = 0;
	printk("nvidiafb: CRTC %i appears to have a "
	"CRT attached\n", CRTCnumber);
	} else if (slaved_on_A) {
	CRTCnumber = 0;
	FlatPanel = 1;
	Television = 1;
	printk("nvidiafb: CRTC 0 is currently programmed "
	"for TV\n");
	} else if (slaved_on_B) {
	CRTCnumber = 1;
	FlatPanel = 1;
	Television = 1;
	printk("nvidiafb: CRTC 1 is currently programmed for "
	"TV\n");
	} else if (monA) {
	FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;
	} else if (monB) {
	FlatPanel = (monB->input & FB_DISP_DDI) ? 1 : 0;
	}

	if (par->FlatPanel == -1) {
	if (FlatPanel != -1) {
	par->FlatPanel = FlatPanel;
	par->Television = Television;
	} else {
	printk("nvidiafb: Unable to detect display "
	"type...\n");
	if (mobile) {
	printk("...On a laptop, assuming "
	"DFP\n");
	par->FlatPanel = 1;
	} else {
	printk("...Using default of CRT\n");
	par->FlatPanel = 0;
	}
	}
	} else {
	printk("nvidiafb: Forcing display type to %s as "
	"specified\n", par->FlatPanel ? "DFP" : "CRT");
	}

	if (par->CRTCnumber == -1) {
	if (CRTCnumber != -1)
	par->CRTCnumber = CRTCnumber;
	else {
	printk("nvidiafb: Unable to detect which "
	"CRTCNumber...\n");
	if (par->FlatPanel)
	par->CRTCnumber = 1;
	else
	par->CRTCnumber = 0;
	printk("...Defaulting to CRTCNumber %i\n",
	par->CRTCnumber);
	}
	} else {
	printk("nvidiafb: Forcing CRTCNumber %i as "
	"specified\n", par->CRTCnumber);
	}

	if (monA) {
	if (((monA->input & FB_DISP_DDI) &&
	par->FlatPanel) \|\|
	((!(monA->input & FB_DISP_DDI)) &&
	!par->FlatPanel)) {
	if (monB) {
	fb_destroy_modedb(monB->modedb);
	monB = NULL;
	}
	} else {
	fb_destroy_modedb(monA->modedb);
	monA = NULL;
	}
	}

	if (monB) {
	if (((monB->input & FB_DISP_DDI) &&
	!par->FlatPanel) \|\|
	((!(monB->input & FB_DISP_DDI)) &&
	par->FlatPanel)) {
	fb_destroy_modedb(monB->modedb);
	monB = NULL;
	} else
	monA = monB;
	}

	if (implementation == 0x0110)
	cr44 = par->CRTCnumber * 0x3;

	NV_WR32(par->PCRTC0, 0x00000860, oldhead);

	VGA_WR08(par->PCIO, 0x03D4, 0x44);
	VGA_WR08(par->PCIO, 0x03D5, cr44);
	NVSelectHeadRegisters(par, par->CRTCnumber);
	}

	printk("nvidiafb: Using %s on CRTC %i\n",
	par->FlatPanel ? (par->Television ? "TV" : "DFP") : "CRT",
	par->CRTCnumber);

	if (par->FlatPanel && !par->Television) {
	par->fpWidth = NV_RD32(par->PRAMDAC, 0x0820) + 1;
	par->fpHeight = NV_RD32(par->PRAMDAC, 0x0800) + 1;
	par->fpSyncs = NV_RD32(par->PRAMDAC, 0x0848) & 0x30000033;

	printk("nvidiafb: Panel size is %i x %i\n", par->fpWidth, par->fpHeight);
	}

	if (monA)
	info->monspecs = *monA;

	if (!par->FlatPanel \|\| !par->twoHeads)
	par->FPDither = 0;

	par->LVDS = 0;
	if (par->FlatPanel && par->twoHeads) {
	NV_WR32(par->PRAMDAC0, 0x08B0, 0x00010004);
	if (NV_RD32(par->PRAMDAC0, 0x08b4) & 1)
	par->LVDS = 1;
	printk("nvidiafb: Panel is %s\n", par->LVDS ? "LVDS" : "TMDS");
	}

	kfree(edidA);
	kfree(edidB);
	done:
	kfree(var);
	kfree(monitorA);
	kfree(monitorB);
	return err;
	}