xref: /openbmc/linux/drivers/video/fbdev/nvidia/nv_setup.c (revision d0034a7a4ac7fae708146ac0059b9c47a1543f0d)
1   /***************************************************************************\
2  |*                                                                           *|
3  |*       Copyright 2003 NVIDIA, Corporation.  All rights reserved.           *|
4  |*                                                                           *|
5  |*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
6  |*     international laws.  Users and possessors of this source code are     *|
7  |*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
8  |*     use this code in individual and commercial software.                  *|
9  |*                                                                           *|
10  |*     Any use of this source code must include,  in the user documenta-     *|
11  |*     tion and  internal comments to the code,  notices to the end user     *|
12  |*     as follows:                                                           *|
13  |*                                                                           *|
14  |*       Copyright 2003 NVIDIA, Corporation.  All rights reserved.           *|
15  |*                                                                           *|
16  |*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
17  |*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
18  |*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
19  |*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
20  |*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
21  |*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
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26  |*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
27  |*                                                                           *|
28  |*     U.S. Government  End  Users.   This source code  is a "commercial     *|
29  |*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
30  |*     consisting  of "commercial  computer  software"  and  "commercial     *|
31  |*     computer  software  documentation,"  as such  terms  are  used in     *|
32  |*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
33  |*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
34  |*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
35  |*     all U.S. Government End Users  acquire the source code  with only     *|
36  |*     those rights set forth herein.                                        *|
37  |*                                                                           *|
38   \***************************************************************************/
39  
40  /*
41   * GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
42   * XFree86 'nv' driver, this source code is provided under MIT-style licensing
43   * where the source code is provided "as is" without warranty of any kind.
44   * The only usage restriction is for the copyright notices to be retained
45   * whenever code is used.
46   *
47   * Antonino Daplas <adaplas@pol.net> 2005-03-11
48   */
49  
50  #include <video/vga.h>
51  #include <linux/delay.h>
52  #include <linux/pci.h>
53  #include <linux/slab.h>
54  #include "nv_type.h"
55  #include "nv_local.h"
56  #include "nv_proto.h"
57  /*
58   * Override VGA I/O routines.
59   */
NVWriteCrtc(struct nvidia_par * par,u8 index,u8 value)60  void NVWriteCrtc(struct nvidia_par *par, u8 index, u8 value)
61  {
62  	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
63  	VGA_WR08(par->PCIO, par->IOBase + 0x05, value);
64  }
NVReadCrtc(struct nvidia_par * par,u8 index)65  u8 NVReadCrtc(struct nvidia_par *par, u8 index)
66  {
67  	VGA_WR08(par->PCIO, par->IOBase + 0x04, index);
68  	return (VGA_RD08(par->PCIO, par->IOBase + 0x05));
69  }
NVWriteGr(struct nvidia_par * par,u8 index,u8 value)70  void NVWriteGr(struct nvidia_par *par, u8 index, u8 value)
71  {
72  	VGA_WR08(par->PVIO, VGA_GFX_I, index);
73  	VGA_WR08(par->PVIO, VGA_GFX_D, value);
74  }
NVReadGr(struct nvidia_par * par,u8 index)75  u8 NVReadGr(struct nvidia_par *par, u8 index)
76  {
77  	VGA_WR08(par->PVIO, VGA_GFX_I, index);
78  	return (VGA_RD08(par->PVIO, VGA_GFX_D));
79  }
NVWriteSeq(struct nvidia_par * par,u8 index,u8 value)80  void NVWriteSeq(struct nvidia_par *par, u8 index, u8 value)
81  {
82  	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
83  	VGA_WR08(par->PVIO, VGA_SEQ_D, value);
84  }
NVReadSeq(struct nvidia_par * par,u8 index)85  u8 NVReadSeq(struct nvidia_par *par, u8 index)
86  {
87  	VGA_WR08(par->PVIO, VGA_SEQ_I, index);
88  	return (VGA_RD08(par->PVIO, VGA_SEQ_D));
89  }
NVWriteAttr(struct nvidia_par * par,u8 index,u8 value)90  void NVWriteAttr(struct nvidia_par *par, u8 index, u8 value)
91  {
92  
93  	VGA_RD08(par->PCIO, par->IOBase + 0x0a);
94  	if (par->paletteEnabled)
95  		index &= ~0x20;
96  	else
97  		index |= 0x20;
98  	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
99  	VGA_WR08(par->PCIO, VGA_ATT_W, value);
100  }
NVReadAttr(struct nvidia_par * par,u8 index)101  u8 NVReadAttr(struct nvidia_par *par, u8 index)
102  {
103  	VGA_RD08(par->PCIO, par->IOBase + 0x0a);
104  	if (par->paletteEnabled)
105  		index &= ~0x20;
106  	else
107  		index |= 0x20;
108  	VGA_WR08(par->PCIO, VGA_ATT_IW, index);
109  	return (VGA_RD08(par->PCIO, VGA_ATT_R));
110  }
NVWriteMiscOut(struct nvidia_par * par,u8 value)111  void NVWriteMiscOut(struct nvidia_par *par, u8 value)
112  {
113  	VGA_WR08(par->PVIO, VGA_MIS_W, value);
114  }
NVReadMiscOut(struct nvidia_par * par)115  u8 NVReadMiscOut(struct nvidia_par *par)
116  {
117  	return (VGA_RD08(par->PVIO, VGA_MIS_R));
118  }
NVWriteDacMask(struct nvidia_par * par,u8 value)119  void NVWriteDacMask(struct nvidia_par *par, u8 value)
120  {
121  	VGA_WR08(par->PDIO, VGA_PEL_MSK, value);
122  }
NVWriteDacReadAddr(struct nvidia_par * par,u8 value)123  void NVWriteDacReadAddr(struct nvidia_par *par, u8 value)
124  {
125  	VGA_WR08(par->PDIO, VGA_PEL_IR, value);
126  }
NVWriteDacWriteAddr(struct nvidia_par * par,u8 value)127  void NVWriteDacWriteAddr(struct nvidia_par *par, u8 value)
128  {
129  	VGA_WR08(par->PDIO, VGA_PEL_IW, value);
130  }
NVWriteDacData(struct nvidia_par * par,u8 value)131  void NVWriteDacData(struct nvidia_par *par, u8 value)
132  {
133  	VGA_WR08(par->PDIO, VGA_PEL_D, value);
134  }
NVReadDacData(struct nvidia_par * par)135  u8 NVReadDacData(struct nvidia_par *par)
136  {
137  	return (VGA_RD08(par->PDIO, VGA_PEL_D));
138  }
139  
NVIsConnected(struct nvidia_par * par,int output)140  static int NVIsConnected(struct nvidia_par *par, int output)
141  {
142  	volatile u32 __iomem *PRAMDAC = par->PRAMDAC0;
143  	u32 reg52C, reg608, dac0_reg608 = 0;
144  	int present;
145  
146  	if (output) {
147  	    dac0_reg608 = NV_RD32(PRAMDAC, 0x0608);
148  	    PRAMDAC += 0x800;
149  	}
150  
151  	reg52C = NV_RD32(PRAMDAC, 0x052C);
152  	reg608 = NV_RD32(PRAMDAC, 0x0608);
153  
154  	NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);
155  
156  	NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
157  	msleep(1);
158  	NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) | 1);
159  
160  	NV_WR32(par->PRAMDAC0, 0x0610, 0x94050140);
161  	NV_WR32(par->PRAMDAC0, 0x0608, NV_RD32(par->PRAMDAC0, 0x0608) |
162  		0x00001000);
163  
164  	msleep(1);
165  
166  	present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? 1 : 0;
167  
168  	if (present)
169  		printk("nvidiafb: CRTC%i analog found\n", output);
170  	else
171  		printk("nvidiafb: CRTC%i analog not found\n", output);
172  
173  	if (output)
174  	    NV_WR32(par->PRAMDAC0, 0x0608, dac0_reg608);
175  
176  	NV_WR32(PRAMDAC, 0x052C, reg52C);
177  	NV_WR32(PRAMDAC, 0x0608, reg608);
178  
179  	return present;
180  }
181  
NVSelectHeadRegisters(struct nvidia_par * par,int head)182  static void NVSelectHeadRegisters(struct nvidia_par *par, int head)
183  {
184  	if (head) {
185  		par->PCIO = par->PCIO0 + 0x2000;
186  		par->PCRTC = par->PCRTC0 + 0x800;
187  		par->PRAMDAC = par->PRAMDAC0 + 0x800;
188  		par->PDIO = par->PDIO0 + 0x2000;
189  	} else {
190  		par->PCIO = par->PCIO0;
191  		par->PCRTC = par->PCRTC0;
192  		par->PRAMDAC = par->PRAMDAC0;
193  		par->PDIO = par->PDIO0;
194  	}
195  }
196  
nv4GetConfig(struct nvidia_par * par)197  static void nv4GetConfig(struct nvidia_par *par)
198  {
199  	if (NV_RD32(par->PFB, 0x0000) & 0x00000100) {
200  		par->RamAmountKBytes =
201  		    ((NV_RD32(par->PFB, 0x0000) >> 12) & 0x0F) * 1024 * 2 +
202  		    1024 * 2;
203  	} else {
204  		switch (NV_RD32(par->PFB, 0x0000) & 0x00000003) {
205  		case 0:
206  			par->RamAmountKBytes = 1024 * 32;
207  			break;
208  		case 1:
209  			par->RamAmountKBytes = 1024 * 4;
210  			break;
211  		case 2:
212  			par->RamAmountKBytes = 1024 * 8;
213  			break;
214  		case 3:
215  		default:
216  			par->RamAmountKBytes = 1024 * 16;
217  			break;
218  		}
219  	}
220  	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & 0x00000040) ?
221  	    14318 : 13500;
222  	par->CURSOR = &par->PRAMIN[0x1E00];
223  	par->MinVClockFreqKHz = 12000;
224  	par->MaxVClockFreqKHz = 350000;
225  }
226  
nv10GetConfig(struct nvidia_par * par)227  static void nv10GetConfig(struct nvidia_par *par)
228  {
229  	struct pci_dev *dev;
230  	u32 implementation = par->Chipset & 0x0ff0;
231  
232  #ifdef __BIG_ENDIAN
233  	/* turn on big endian register access */
234  	if (!(NV_RD32(par->PMC, 0x0004) & 0x01000001)) {
235  		NV_WR32(par->PMC, 0x0004, 0x01000001);
236  		mb();
237  	}
238  #endif
239  
240  	dev = pci_get_domain_bus_and_slot(pci_domain_nr(par->pci_dev->bus),
241  					  0, 1);
242  	if ((par->Chipset & 0xffff) == 0x01a0) {
243  		u32 amt;
244  
245  		pci_read_config_dword(dev, 0x7c, &amt);
246  		par->RamAmountKBytes = (((amt >> 6) & 31) + 1) * 1024;
247  	} else if ((par->Chipset & 0xffff) == 0x01f0) {
248  		u32 amt;
249  
250  		pci_read_config_dword(dev, 0x84, &amt);
251  		par->RamAmountKBytes = (((amt >> 4) & 127) + 1) * 1024;
252  	} else {
253  		par->RamAmountKBytes =
254  		    (NV_RD32(par->PFB, 0x020C) & 0xFFF00000) >> 10;
255  	}
256  	pci_dev_put(dev);
257  
258  	par->CrystalFreqKHz = (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 6)) ?
259  	    14318 : 13500;
260  
261  	if (par->twoHeads && (implementation != 0x0110)) {
262  		if (NV_RD32(par->PEXTDEV, 0x0000) & (1 << 22))
263  			par->CrystalFreqKHz = 27000;
264  	}
265  
266  	par->CURSOR = NULL;	/* can't set this here */
267  	par->MinVClockFreqKHz = 12000;
268  	par->MaxVClockFreqKHz = par->twoStagePLL ? 400000 : 350000;
269  }
270  
NVCommonSetup(struct fb_info * info)271  int NVCommonSetup(struct fb_info *info)
272  {
273  	struct nvidia_par *par = info->par;
274  	struct fb_var_screeninfo *var;
275  	u16 implementation = par->Chipset & 0x0ff0;
276  	u8 *edidA = NULL, *edidB = NULL;
277  	struct fb_monspecs *monitorA, *monitorB;
278  	struct fb_monspecs *monA = NULL, *monB = NULL;
279  	int mobile = 0;
280  	int tvA = 0;
281  	int tvB = 0;
282  	int FlatPanel = -1;	/* really means the CRTC is slaved */
283  	int Television = 0;
284  	int err = 0;
285  
286  	var = kzalloc(sizeof(struct fb_var_screeninfo), GFP_KERNEL);
287  	monitorA = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);
288  	monitorB = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL);
289  
290  	if (!var || !monitorA || !monitorB) {
291  		err = -ENOMEM;
292  		goto done;
293  	}
294  
295  	par->PRAMIN = par->REGS + (0x00710000 / 4);
296  	par->PCRTC0 = par->REGS + (0x00600000 / 4);
297  	par->PRAMDAC0 = par->REGS + (0x00680000 / 4);
298  	par->PFB = par->REGS + (0x00100000 / 4);
299  	par->PFIFO = par->REGS + (0x00002000 / 4);
300  	par->PGRAPH = par->REGS + (0x00400000 / 4);
301  	par->PEXTDEV = par->REGS + (0x00101000 / 4);
302  	par->PTIMER = par->REGS + (0x00009000 / 4);
303  	par->PMC = par->REGS + (0x00000000 / 4);
304  	par->FIFO = par->REGS + (0x00800000 / 4);
305  
306  	/* 8 bit registers */
307  	par->PCIO0 = (u8 __iomem *) par->REGS + 0x00601000;
308  	par->PDIO0 = (u8 __iomem *) par->REGS + 0x00681000;
309  	par->PVIO = (u8 __iomem *) par->REGS + 0x000C0000;
310  
311  	par->twoHeads = (par->Architecture >= NV_ARCH_10) &&
312  	    (implementation != 0x0100) &&
313  	    (implementation != 0x0150) &&
314  	    (implementation != 0x01A0) && (implementation != 0x0200);
315  
316  	par->fpScaler = (par->FpScale && par->twoHeads &&
317  			 (implementation != 0x0110));
318  
319  	par->twoStagePLL = (implementation == 0x0310) ||
320  	    (implementation == 0x0340) || (par->Architecture >= NV_ARCH_40);
321  
322  	par->WaitVSyncPossible = (par->Architecture >= NV_ARCH_10) &&
323  	    (implementation != 0x0100);
324  
325  	par->BlendingPossible = ((par->Chipset & 0xffff) != 0x0020);
326  
327  	/* look for known laptop chips */
328  	switch (par->Chipset & 0xffff) {
329  	case 0x0112:
330  	case 0x0174:
331  	case 0x0175:
332  	case 0x0176:
333  	case 0x0177:
334  	case 0x0179:
335  	case 0x017C:
336  	case 0x017D:
337  	case 0x0186:
338  	case 0x0187:
339  	case 0x018D:
340  	case 0x01D7:
341  	case 0x0228:
342  	case 0x0286:
343  	case 0x028C:
344  	case 0x0316:
345  	case 0x0317:
346  	case 0x031A:
347  	case 0x031B:
348  	case 0x031C:
349  	case 0x031D:
350  	case 0x031E:
351  	case 0x031F:
352  	case 0x0324:
353  	case 0x0325:
354  	case 0x0328:
355  	case 0x0329:
356  	case 0x032C:
357  	case 0x032D:
358  	case 0x0347:
359  	case 0x0348:
360  	case 0x0349:
361  	case 0x034B:
362  	case 0x034C:
363  	case 0x0160:
364  	case 0x0166:
365  	case 0x0169:
366  	case 0x016B:
367  	case 0x016C:
368  	case 0x016D:
369  	case 0x00C8:
370  	case 0x00CC:
371  	case 0x0144:
372  	case 0x0146:
373  	case 0x0147:
374  	case 0x0148:
375  	case 0x0098:
376  	case 0x0099:
377  		mobile = 1;
378  		break;
379  	default:
380  		break;
381  	}
382  
383  	if (par->Architecture == NV_ARCH_04)
384  		nv4GetConfig(par);
385  	else
386  		nv10GetConfig(par);
387  
388  	NVSelectHeadRegisters(par, 0);
389  
390  	NVLockUnlock(par, 0);
391  
392  	par->IOBase = (NVReadMiscOut(par) & 0x01) ? 0x3d0 : 0x3b0;
393  
394  	par->Television = 0;
395  
396  	nvidia_create_i2c_busses(par);
397  	if (!par->twoHeads) {
398  		par->CRTCnumber = 0;
399  		if (nvidia_probe_i2c_connector(info, 1, &edidA))
400  			nvidia_probe_of_connector(info, 1, &edidA);
401  		if (edidA && !fb_parse_edid(edidA, var)) {
402  			printk("nvidiafb: EDID found from BUS1\n");
403  			monA = monitorA;
404  			fb_edid_to_monspecs(edidA, monA);
405  			FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;
406  
407  			/* NV4 doesn't support FlatPanels */
408  			if ((par->Chipset & 0x0fff) <= 0x0020)
409  				FlatPanel = 0;
410  		} else {
411  			VGA_WR08(par->PCIO, 0x03D4, 0x28);
412  			if (VGA_RD08(par->PCIO, 0x03D5) & 0x80) {
413  				VGA_WR08(par->PCIO, 0x03D4, 0x33);
414  				if (!(VGA_RD08(par->PCIO, 0x03D5) & 0x01))
415  					Television = 1;
416  				FlatPanel = 1;
417  			} else {
418  				FlatPanel = 0;
419  			}
420  			printk("nvidiafb: HW is currently programmed for %s\n",
421  			       FlatPanel ? (Television ? "TV" : "DFP") :
422  			       "CRT");
423  		}
424  
425  		if (par->FlatPanel == -1) {
426  			par->FlatPanel = FlatPanel;
427  			par->Television = Television;
428  		} else {
429  			printk("nvidiafb: Forcing display type to %s as "
430  			       "specified\n", par->FlatPanel ? "DFP" : "CRT");
431  		}
432  	} else {
433  		u8 outputAfromCRTC, outputBfromCRTC;
434  		int CRTCnumber = -1;
435  		u8 slaved_on_A, slaved_on_B;
436  		int analog_on_A, analog_on_B;
437  		u32 oldhead;
438  		u8 cr44;
439  
440  		if (implementation != 0x0110) {
441  			if (NV_RD32(par->PRAMDAC0, 0x0000052C) & 0x100)
442  				outputAfromCRTC = 1;
443  			else
444  				outputAfromCRTC = 0;
445  			if (NV_RD32(par->PRAMDAC0, 0x0000252C) & 0x100)
446  				outputBfromCRTC = 1;
447  			else
448  				outputBfromCRTC = 0;
449  			analog_on_A = NVIsConnected(par, 0);
450  			analog_on_B = NVIsConnected(par, 1);
451  		} else {
452  			outputAfromCRTC = 0;
453  			outputBfromCRTC = 1;
454  			analog_on_A = 0;
455  			analog_on_B = 0;
456  		}
457  
458  		VGA_WR08(par->PCIO, 0x03D4, 0x44);
459  		cr44 = VGA_RD08(par->PCIO, 0x03D5);
460  
461  		VGA_WR08(par->PCIO, 0x03D5, 3);
462  		NVSelectHeadRegisters(par, 1);
463  		NVLockUnlock(par, 0);
464  
465  		VGA_WR08(par->PCIO, 0x03D4, 0x28);
466  		slaved_on_B = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
467  		if (slaved_on_B) {
468  			VGA_WR08(par->PCIO, 0x03D4, 0x33);
469  			tvB = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
470  		}
471  
472  		VGA_WR08(par->PCIO, 0x03D4, 0x44);
473  		VGA_WR08(par->PCIO, 0x03D5, 0);
474  		NVSelectHeadRegisters(par, 0);
475  		NVLockUnlock(par, 0);
476  
477  		VGA_WR08(par->PCIO, 0x03D4, 0x28);
478  		slaved_on_A = VGA_RD08(par->PCIO, 0x03D5) & 0x80;
479  		if (slaved_on_A) {
480  			VGA_WR08(par->PCIO, 0x03D4, 0x33);
481  			tvA = !(VGA_RD08(par->PCIO, 0x03D5) & 0x01);
482  		}
483  
484  		oldhead = NV_RD32(par->PCRTC0, 0x00000860);
485  		NV_WR32(par->PCRTC0, 0x00000860, oldhead | 0x00000010);
486  
487  		if (nvidia_probe_i2c_connector(info, 1, &edidA))
488  			nvidia_probe_of_connector(info, 1, &edidA);
489  		if (edidA && !fb_parse_edid(edidA, var)) {
490  			printk("nvidiafb: EDID found from BUS1\n");
491  			monA = monitorA;
492  			fb_edid_to_monspecs(edidA, monA);
493  		}
494  
495  		if (nvidia_probe_i2c_connector(info, 2, &edidB))
496  			nvidia_probe_of_connector(info, 2, &edidB);
497  		if (edidB && !fb_parse_edid(edidB, var)) {
498  			printk("nvidiafb: EDID found from BUS2\n");
499  			monB = monitorB;
500  			fb_edid_to_monspecs(edidB, monB);
501  		}
502  
503  		if (slaved_on_A && !tvA) {
504  			CRTCnumber = 0;
505  			FlatPanel = 1;
506  			printk("nvidiafb: CRTC 0 is currently programmed for "
507  			       "DFP\n");
508  		} else if (slaved_on_B && !tvB) {
509  			CRTCnumber = 1;
510  			FlatPanel = 1;
511  			printk("nvidiafb: CRTC 1 is currently programmed "
512  			       "for DFP\n");
513  		} else if (analog_on_A) {
514  			CRTCnumber = outputAfromCRTC;
515  			FlatPanel = 0;
516  			printk("nvidiafb: CRTC %i appears to have a "
517  			       "CRT attached\n", CRTCnumber);
518  		} else if (analog_on_B) {
519  			CRTCnumber = outputBfromCRTC;
520  			FlatPanel = 0;
521  			printk("nvidiafb: CRTC %i appears to have a "
522  			       "CRT attached\n", CRTCnumber);
523  		} else if (slaved_on_A) {
524  			CRTCnumber = 0;
525  			FlatPanel = 1;
526  			Television = 1;
527  			printk("nvidiafb: CRTC 0 is currently programmed "
528  			       "for TV\n");
529  		} else if (slaved_on_B) {
530  			CRTCnumber = 1;
531  			FlatPanel = 1;
532  			Television = 1;
533  			printk("nvidiafb: CRTC 1 is currently programmed for "
534  			       "TV\n");
535  		} else if (monA) {
536  			FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0;
537  		} else if (monB) {
538  			FlatPanel = (monB->input & FB_DISP_DDI) ? 1 : 0;
539  		}
540  
541  		if (par->FlatPanel == -1) {
542  			if (FlatPanel != -1) {
543  				par->FlatPanel = FlatPanel;
544  				par->Television = Television;
545  			} else {
546  				printk("nvidiafb: Unable to detect display "
547  				       "type...\n");
548  				if (mobile) {
549  					printk("...On a laptop, assuming "
550  					       "DFP\n");
551  					par->FlatPanel = 1;
552  				} else {
553  					printk("...Using default of CRT\n");
554  					par->FlatPanel = 0;
555  				}
556  			}
557  		} else {
558  			printk("nvidiafb: Forcing display type to %s as "
559  			       "specified\n", par->FlatPanel ? "DFP" : "CRT");
560  		}
561  
562  		if (par->CRTCnumber == -1) {
563  			if (CRTCnumber != -1)
564  				par->CRTCnumber = CRTCnumber;
565  			else {
566  				printk("nvidiafb: Unable to detect which "
567  				       "CRTCNumber...\n");
568  				if (par->FlatPanel)
569  					par->CRTCnumber = 1;
570  				else
571  					par->CRTCnumber = 0;
572  				printk("...Defaulting to CRTCNumber %i\n",
573  				       par->CRTCnumber);
574  			}
575  		} else {
576  			printk("nvidiafb: Forcing CRTCNumber %i as "
577  			       "specified\n", par->CRTCnumber);
578  		}
579  
580  		if (monA) {
581  			if (((monA->input & FB_DISP_DDI) &&
582  			     par->FlatPanel) ||
583  			    ((!(monA->input & FB_DISP_DDI)) &&
584  			     !par->FlatPanel)) {
585  				if (monB) {
586  					fb_destroy_modedb(monB->modedb);
587  					monB = NULL;
588  				}
589  			} else {
590  				fb_destroy_modedb(monA->modedb);
591  				monA = NULL;
592  			}
593  		}
594  
595  		if (monB) {
596  			if (((monB->input & FB_DISP_DDI) &&
597  			     !par->FlatPanel) ||
598  			    ((!(monB->input & FB_DISP_DDI)) &&
599  			     par->FlatPanel)) {
600  				fb_destroy_modedb(monB->modedb);
601  				monB = NULL;
602  			} else
603  				monA = monB;
604  		}
605  
606  		if (implementation == 0x0110)
607  			cr44 = par->CRTCnumber * 0x3;
608  
609  		NV_WR32(par->PCRTC0, 0x00000860, oldhead);
610  
611  		VGA_WR08(par->PCIO, 0x03D4, 0x44);
612  		VGA_WR08(par->PCIO, 0x03D5, cr44);
613  		NVSelectHeadRegisters(par, par->CRTCnumber);
614  	}
615  
616  	printk("nvidiafb: Using %s on CRTC %i\n",
617  	       par->FlatPanel ? (par->Television ? "TV" : "DFP") : "CRT",
618  	       par->CRTCnumber);
619  
620  	if (par->FlatPanel && !par->Television) {
621  		par->fpWidth = NV_RD32(par->PRAMDAC, 0x0820) + 1;
622  		par->fpHeight = NV_RD32(par->PRAMDAC, 0x0800) + 1;
623  		par->fpSyncs = NV_RD32(par->PRAMDAC, 0x0848) & 0x30000033;
624  
625  		printk("nvidiafb: Panel size is %i x %i\n", par->fpWidth, par->fpHeight);
626  	}
627  
628  	if (monA)
629  		info->monspecs = *monA;
630  
631  	if (!par->FlatPanel || !par->twoHeads)
632  		par->FPDither = 0;
633  
634  	par->LVDS = 0;
635  	if (par->FlatPanel && par->twoHeads) {
636  		NV_WR32(par->PRAMDAC0, 0x08B0, 0x00010004);
637  		if (NV_RD32(par->PRAMDAC0, 0x08b4) & 1)
638  			par->LVDS = 1;
639  		printk("nvidiafb: Panel is %s\n", par->LVDS ? "LVDS" : "TMDS");
640  	}
641  
642  	kfree(edidA);
643  	kfree(edidB);
644  done:
645  	kfree(var);
646  	kfree(monitorA);
647  	kfree(monitorB);
648  	return err;
649  }
650