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kernel_optimize_test/drivers/video/nvidia/nv_setup.c
Mikael Pettersson 4e8a2372f9 nvidiafb: fix boot-time printk string 
On bootup nvidiafb prints the following on my Apple G5:

	nvidiafb: CRTC 1appears to have a CRT attached

There should be a space between the '1' and the 'appears'.  Add it.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-23 12:50:05 -07:00

675 lines
18 KiB
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/***************************************************************************\
|* *|
|* 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 "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;
}
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