/*
* linux/drivers/video/neofb.c -- NeoMagic Framebuffer Driver
*
* Copyright (c) 2001-2002 Denis Oliver Kropp <dok@directfb.org>
*
*
* Card specific code is based on XFree86's neomagic driver.
* Framebuffer framework code is based on code of cyber2000fb.
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*
*
* 0.4.1
* - Cosmetic changes (dok)
*
* 0.4
* - Toshiba Libretto support, allow modes larger than LCD size if
* LCD is disabled, keep BIOS settings if internal/external display
* haven't been enabled explicitly
* (Thomas J. Moore <dark@mama.indstate.edu>)
*
* 0.3.3
* - Porting over to new fbdev api. (jsimmons)
*
* 0.3.2
* - got rid of all floating point (dok)
*
* 0.3.1
* - added module license (dok)
*
* 0.3
* - hardware accelerated clear and move for 2200 and above (dok)
* - maximum allowed dotclock is handled now (dok)
*
* 0.2.1
* - correct panning after X usage (dok)
* - added module and kernel parameters (dok)
* - no stretching if external display is enabled (dok)
*
* 0.2
* - initial version (dok)
*
*
* TODO
* - ioctl for internal/external switching
* - blanking
* - 32bit depth support, maybe impossible
* - disable pan-on-sync, need specs
*
* BUGS
* - white margin on bootup like with tdfxfb (colormap problem?)
*
*/
#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>
#ifdef CONFIG_TOSHIBA
#include <linux/toshiba.h>
#endif
#include <asm /io.h>
#include <asm /irq.h>
#include <video/vga.h>
#include <video/neomagic.h>
#define NEOFB_VERSION "0.4.2"
/* --------------------------------------------------------------------- */
static bool internal;
static bool external;
static bool libretto;
static bool nostretch;
static bool nopciburst;
static char *mode_option = NULL;
#ifdef MODULE
MODULE_AUTHOR("(c) 2001-2002 Denis Oliver Kropp <dok@convergence.de>" );
MODULE_LICENSE("GPL" );
MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips" );
module_param(internal, bool , 0 );
MODULE_PARM_DESC(internal, "Enable output on internal LCD Display." );
module_param(external, bool , 0 );
MODULE_PARM_DESC(external, "Enable output on external CRT." );
module_param(libretto, bool , 0 );
MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD." );
module_param(nostretch, bool , 0 );
MODULE_PARM_DESC(nostretch,
"Disable stretching of modes smaller than LCD." );
module_param(nopciburst, bool , 0 );
MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode." );
module_param(mode_option, charp, 0 );
MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)" );
#endif
/* --------------------------------------------------------------------- */
static biosMode bios8[] = {
{320 , 240 , 0 x40},
{300 , 400 , 0 x42},
{640 , 400 , 0 x20},
{640 , 480 , 0 x21},
{800 , 600 , 0 x23},
{1024 , 768 , 0 x25},
};
static biosMode bios16[] = {
{320 , 200 , 0 x2e},
{320 , 240 , 0 x41},
{300 , 400 , 0 x43},
{640 , 480 , 0 x31},
{800 , 600 , 0 x34},
{1024 , 768 , 0 x37},
};
static biosMode bios24[] = {
{640 , 480 , 0 x32},
{800 , 600 , 0 x35},
{1024 , 768 , 0 x38}
};
#ifdef NO_32BIT_SUPPORT_YET
/* FIXME: guessed values, wrong */
static biosMode bios32[] = {
{640 , 480 , 0 x33},
{800 , 600 , 0 x36},
{1024 , 768 , 0 x39}
};
#endif
static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
{
writel(val, par->neo2200 + par->cursorOff + regindex);
}
static int neoFindMode(int xres, int yres, int depth)
{
int xres_s;
int i, size;
biosMode *mode;
switch (depth) {
case 8 :
size = ARRAY_SIZE(bios8);
mode = bios8;
break ;
case 16 :
size = ARRAY_SIZE(bios16);
mode = bios16;
break ;
case 24 :
size = ARRAY_SIZE(bios24);
mode = bios24;
break ;
#ifdef NO_32BIT_SUPPORT_YET
case 32 :
size = ARRAY_SIZE(bios32);
mode = bios32;
break ;
#endif
default :
return 0 ;
}
for (i = 0 ; i < size; i++) {
if (xres <= mode[i].x_res) {
xres_s = mode[i].x_res;
for (; i < size; i++) {
if (mode[i].x_res != xres_s)
return mode[i - 1 ].mode;
if (yres <= mode[i].y_res)
return mode[i].mode;
}
}
}
return mode[size - 1 ].mode;
}
/*
* neoCalcVCLK --
*
* Determine the closest clock frequency to the one requested.
*/
#define MAX_N 127
#define MAX_D 31
#define MAX_F 1
static void neoCalcVCLK(const struct fb_info *info,
struct neofb_par *par, long freq)
{
int n, d, f;
int n_best = 0 , d_best = 0 , f_best = 0 ;
long f_best_diff = 0 x7ffff;
for (f = 0 ; f <= MAX_F; f++)
for (d = 0 ; d <= MAX_D; d++)
for (n = 0 ; n <= MAX_N; n++) {
long f_out;
long f_diff;
f_out = ((14318 * (n + 1 )) / (d + 1 )) >> f;
f_diff = abs(f_out - freq);
if (f_diff <= f_best_diff) {
f_best_diff = f_diff;
n_best = n;
d_best = d;
f_best = f;
}
if (f_out > freq)
break ;
}
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
/* NOT_DONE: We are trying the full range of the 2200 clock.
We should be able to try n up to 2047 */
par->VCLK3NumeratorLow = n_best;
par->VCLK3NumeratorHigh = (f_best << 7 );
} else
par->VCLK3NumeratorLow = n_best | (f_best << 7 );
par->VCLK3Denominator = d_best;
#ifdef NEOFB_DEBUG
printk(KERN_DEBUG "neoVCLK: f:%ld NumLow=%d NumHi=%d Den=%d Df=%ld\n" ,
freq,
par->VCLK3NumeratorLow,
par->VCLK3NumeratorHigh,
par->VCLK3Denominator, f_best_diff);
#endif
}
/*
* vgaHWInit --
* Handle the initialization, etc. of a screen.
* Return FALSE on failure.
*/
static int vgaHWInit(const struct fb_var_screeninfo *var,
struct neofb_par *par)
{
int hsync_end = var->xres + var->right_margin + var->hsync_len;
int htotal = (hsync_end + var->left_margin) >> 3 ;
int vsync_start = var->yres + var->lower_margin;
int vsync_end = vsync_start + var->vsync_len;
int vtotal = vsync_end + var->upper_margin;
par->MiscOutReg = 0 x23;
if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
par->MiscOutReg |= 0 x40;
if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
par->MiscOutReg |= 0 x80;
/*
* Time Sequencer
*/
par->Sequencer[0 ] = 0 x00;
par->Sequencer[1 ] = 0 x01;
par->Sequencer[2 ] = 0 x0F;
par->Sequencer[3 ] = 0 x00; /* Font select */
par->Sequencer[4 ] = 0 x0E; /* Misc */
/*
* CRTC Controller
*/
par->CRTC[0 ] = htotal - 5 ;
par->CRTC[1 ] = (var->xres >> 3 ) - 1 ;
par->CRTC[2 ] = (var->xres >> 3 ) - 1 ;
par->CRTC[3 ] = ((htotal - 1 ) & 0 x1F) | 0 x80;
par->CRTC[4 ] = ((var->xres + var->right_margin) >> 3 );
par->CRTC[5 ] = (((htotal - 1 ) & 0 x20) << 2 )
| (((hsync_end >> 3 )) & 0 x1F);
par->CRTC[6 ] = (vtotal - 2 ) & 0 xFF;
par->CRTC[7 ] = (((vtotal - 2 ) & 0 x100) >> 8 )
| (((var->yres - 1 ) & 0 x100) >> 7 )
| ((vsync_start & 0 x100) >> 6 )
| (((var->yres - 1 ) & 0 x100) >> 5 )
| 0 x10 | (((vtotal - 2 ) & 0 x200) >> 4 )
| (((var->yres - 1 ) & 0 x200) >> 3 )
| ((vsync_start & 0 x200) >> 2 );
par->CRTC[8 ] = 0 x00;
par->CRTC[9 ] = (((var->yres - 1 ) & 0 x200) >> 4 ) | 0 x40;
if (var->vmode & FB_VMODE_DOUBLE)
par->CRTC[9 ] |= 0 x80;
par->CRTC[10 ] = 0 x00;
par->CRTC[11 ] = 0 x00;
par->CRTC[12 ] = 0 x00;
par->CRTC[13 ] = 0 x00;
par->CRTC[14 ] = 0 x00;
par->CRTC[15 ] = 0 x00;
par->CRTC[16 ] = vsync_start & 0 xFF;
par->CRTC[17 ] = (vsync_end & 0 x0F) | 0 x20;
par->CRTC[18 ] = (var->yres - 1 ) & 0 xFF;
par->CRTC[19 ] = var->xres_virtual >> 4 ;
par->CRTC[20 ] = 0 x00;
par->CRTC[21 ] = (var->yres - 1 ) & 0 xFF;
par->CRTC[22 ] = (vtotal - 1 ) & 0 xFF;
par->CRTC[23 ] = 0 xC3;
par->CRTC[24 ] = 0 xFF;
/*
* are these unnecessary?
* vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
* vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
*/
/*
* Graphics Display Controller
*/
par->Graphics[0 ] = 0 x00;
par->Graphics[1 ] = 0 x00;
par->Graphics[2 ] = 0 x00;
par->Graphics[3 ] = 0 x00;
par->Graphics[4 ] = 0 x00;
par->Graphics[5 ] = 0 x40;
par->Graphics[6 ] = 0 x05; /* only map 64k VGA memory !!!! */
par->Graphics[7 ] = 0 x0F;
par->Graphics[8 ] = 0 xFF;
par->Attribute[0 ] = 0 x00; /* standard colormap translation */
par->Attribute[1 ] = 0 x01;
par->Attribute[2 ] = 0 x02;
par->Attribute[3 ] = 0 x03;
par->Attribute[4 ] = 0 x04;
par->Attribute[5 ] = 0 x05;
par->Attribute[6 ] = 0 x06;
par->Attribute[7 ] = 0 x07;
par->Attribute[8 ] = 0 x08;
par->Attribute[9 ] = 0 x09;
par->Attribute[10 ] = 0 x0A;
par->Attribute[11 ] = 0 x0B;
par->Attribute[12 ] = 0 x0C;
par->Attribute[13 ] = 0 x0D;
par->Attribute[14 ] = 0 x0E;
par->Attribute[15 ] = 0 x0F;
par->Attribute[16 ] = 0 x41;
par->Attribute[17 ] = 0 xFF;
par->Attribute[18 ] = 0 x0F;
par->Attribute[19 ] = 0 x00;
par->Attribute[20 ] = 0 x00;
return 0 ;
}
static void vgaHWLock(struct vgastate *state)
{
/* Protect CRTC[0-7] */
vga_wcrt(state->vgabase, 0 x11, vga_rcrt(state->vgabase, 0 x11) | 0 x80);
}
static void vgaHWUnlock(void )
{
/* Unprotect CRTC[0-7] */
vga_wcrt(NULL, 0 x11, vga_rcrt(NULL, 0 x11) & ~0 x80);
}
static void neoLock(struct vgastate *state)
{
vga_wgfx(state->vgabase, 0 x09, 0 x00);
vgaHWLock(state);
}
static void neoUnlock(void )
{
vgaHWUnlock();
vga_wgfx(NULL, 0 x09, 0 x26);
}
/*
* VGA Palette management
*/
static int paletteEnabled = 0 ;
static inline void VGAenablePalette(void )
{
vga_r(NULL, VGA_IS1_RC);
vga_w(NULL, VGA_ATT_W, 0 x00);
paletteEnabled = 1 ;
}
static inline void VGAdisablePalette(void )
{
vga_r(NULL, VGA_IS1_RC);
vga_w(NULL, VGA_ATT_W, 0 x20);
paletteEnabled = 0 ;
}
static inline void VGAwATTR(u8 index, u8 value)
{
if (paletteEnabled)
index &= ~0 x20;
else
index |= 0 x20;
vga_r(NULL, VGA_IS1_RC);
vga_wattr(NULL, index, value);
}
static void vgaHWProtect(int on)
{
unsigned char tmp;
tmp = vga_rseq(NULL, 0 x01);
if (on) {
/*
* Turn off screen and disable sequencer.
*/
vga_wseq(NULL, 0 x00, 0 x01); /* Synchronous Reset */
vga_wseq(NULL, 0 x01, tmp | 0 x20); /* disable the display */
VGAenablePalette();
} else {
/*
* Reenable sequencer, then turn on screen.
*/
vga_wseq(NULL, 0 x01, tmp & ~0 x20); /* reenable display */
vga_wseq(NULL, 0 x00, 0 x03); /* clear synchronousreset */
VGAdisablePalette();
}
}
static void vgaHWRestore(const struct fb_info *info,
const struct neofb_par *par)
{
int i;
vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
for (i = 1 ; i < 5 ; i++)
vga_wseq(NULL, i, par->Sequencer[i]);
/* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
vga_wcrt(NULL, 17 , par->CRTC[17 ] & ~0 x80);
for (i = 0 ; i < 25 ; i++)
vga_wcrt(NULL, i, par->CRTC[i]);
for (i = 0 ; i < 9 ; i++)
vga_wgfx(NULL, i, par->Graphics[i]);
VGAenablePalette();
for (i = 0 ; i < 21 ; i++)
VGAwATTR(i, par->Attribute[i]);
VGAdisablePalette();
}
/* -------------------- Hardware specific routines ------------------------- */
/*
* Hardware Acceleration for Neo2200+
*/
static inline int neo2200_sync(struct fb_info *info)
{
struct neofb_par *par = info->par;
while (readl(&par->neo2200->bltStat) & 1 )
cpu_relax();
return 0 ;
}
static inline void neo2200_wait_fifo(struct fb_info *info,
int requested_fifo_space)
{
// ndev->neo.waitfifo_calls++;
// ndev->neo.waitfifo_sum += requested_fifo_space;
/* FIXME: does not work
if (neo_fifo_space < requested_fifo_space)
{
neo_fifo_waitcycles++;
while (1)
{
neo_fifo_space = (neo2200->bltStat >> 8);
if (neo_fifo_space >= requested_fifo_space)
break;
}
}
else
{
neo_fifo_cache_hits++;
}
neo_fifo_space -= requested_fifo_space;
*/
neo2200_sync(info);
}
static inline void neo2200_accel_init(struct fb_info *info,
struct fb_var_screeninfo *var)
{
struct neofb_par *par = info->par;
Neo2200 __iomem *neo2200 = par->neo2200;
u32 bltMod, pitch;
neo2200_sync(info);
switch (var->bits_per_pixel) {
case 8 :
bltMod = NEO_MODE1_DEPTH8;
pitch = var->xres_virtual;
break ;
case 15 :
case 16 :
bltMod = NEO_MODE1_DEPTH16;
pitch = var->xres_virtual * 2 ;
break ;
case 24 :
bltMod = NEO_MODE1_DEPTH24;
pitch = var->xres_virtual * 3 ;
break ;
default :
printk(KERN_ERR
"neofb: neo2200_accel_init: unexpected bits per pixel!\n" );
return ;
}
writel(bltMod << 16 , &neo2200->bltStat);
writel((pitch << 16 ) | pitch, &neo2200->pitch);
}
/* --------------------------------------------------------------------- */
static int
neofb_open(struct fb_info *info, int user)
{
struct neofb_par *par = info->par;
if (!par->ref_count) {
memset(&par->state, 0 , sizeof (struct vgastate));
par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
save_vga(&par->state);
}
par->ref_count++;
return 0 ;
}
static int
neofb_release(struct fb_info *info, int user)
{
struct neofb_par *par = info->par;
if (!par->ref_count)
return -EINVAL;
if (par->ref_count == 1 ) {
restore_vga(&par->state);
}
par->ref_count--;
return 0 ;
}
static int
neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct neofb_par *par = info->par;
int memlen, vramlen;
int mode_ok = 0 ;
DBG("neofb_check_var" );
if (!var->pixclock || PICOS2KHZ(var->pixclock) > par->maxClock)
return -EINVAL;
/* Is the mode larger than the LCD panel? */
if (par->internal_display &&
((var->xres > par->NeoPanelWidth) ||
(var->yres > par->NeoPanelHeight))) {
printk(KERN_INFO
"Mode (%dx%d) larger than the LCD panel (%dx%d)\n" ,
var->xres, var->yres, par->NeoPanelWidth,
par->NeoPanelHeight);
return -EINVAL;
}
/* Is the mode one of the acceptable sizes? */
if (!par->internal_display)
mode_ok = 1 ;
else {
switch (var->xres) {
case 1280 :
if (var->yres == 1024 )
mode_ok = 1 ;
break ;
case 1024 :
if (var->yres == 768 )
mode_ok = 1 ;
break ;
case 800 :
if (var->yres == (par->libretto ? 480 : 600 ))
mode_ok = 1 ;
break ;
case 640 :
if (var->yres == 480 )
mode_ok = 1 ;
break ;
}
}
if (!mode_ok) {
printk(KERN_INFO
"Mode (%dx%d) won't display properly on LCD\n" ,
var->xres, var->yres);
return -EINVAL;
}
var->red.msb_right = 0 ;
var->green.msb_right = 0 ;
var->blue.msb_right = 0 ;
var->transp.msb_right = 0 ;
var->transp.offset = 0 ;
var->transp.length = 0 ;
switch (var->bits_per_pixel) {
case 8 : /* PSEUDOCOLOUR, 256 */
var->red.offset = 0 ;
var->red.length = 8 ;
var->green.offset = 0 ;
var->green.length = 8 ;
var->blue.offset = 0 ;
var->blue.length = 8 ;
break ;
case 16 : /* DIRECTCOLOUR, 64k */
var->red.offset = 11 ;
var->red.length = 5 ;
var->green.offset = 5 ;
var->green.length = 6 ;
var->blue.offset = 0 ;
var->blue.length = 5 ;
break ;
case 24 : /* TRUECOLOUR, 16m */
var->red.offset = 16 ;
var->red.length = 8 ;
var->green.offset = 8 ;
var->green.length = 8 ;
var->blue.offset = 0 ;
var->blue.length = 8 ;
break ;
#ifdef NO_32BIT_SUPPORT_YET
case 32 : /* TRUECOLOUR, 16m */
var->transp.offset = 24 ;
var->transp.length = 8 ;
var->red.offset = 16 ;
var->red.length = 8 ;
var->green.offset = 8 ;
var->green.length = 8 ;
var->blue.offset = 0 ;
var->blue.length = 8 ;
break ;
#endif
default :
printk(KERN_WARNING "neofb: no support for %dbpp\n" ,
var->bits_per_pixel);
return -EINVAL;
}
vramlen = info->fix.smem_len;
if (vramlen > 4 * 1024 * 1024 )
vramlen = 4 * 1024 * 1024 ;
if (var->xres_virtual < var->xres)
var->xres_virtual = var->xres;
memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3 ;
if (memlen > vramlen) {
var->yres_virtual = vramlen * 8 / (var->xres_virtual *
var->bits_per_pixel);
memlen = var->xres_virtual * var->bits_per_pixel *
var->yres_virtual / 8 ;
}
/* we must round yres/xres down, we already rounded y/xres_virtual up
if it was possible. We should return -EINVAL, but I disagree */
if (var->yres_virtual < var->yres)
var->yres = var->yres_virtual;
if (var->xoffset + var->xres > var->xres_virtual)
var->xoffset = var->xres_virtual - var->xres;
if (var->yoffset + var->yres > var->yres_virtual)
var->yoffset = var->yres_virtual - var->yres;
var->nonstd = 0 ;
var->height = -1 ;
var->width = -1 ;
if (var->bits_per_pixel >= 24 || !par->neo2200)
var->accel_flags &= ~FB_ACCELF_TEXT;
return 0 ;
}
static int neofb_set_par(struct fb_info *info)
{
struct neofb_par *par = info->par;
unsigned char temp;
int i, clock_hi = 0 ;
int lcd_stretch;
int hoffset, voffset;
int vsync_start, vtotal;
DBG("neofb_set_par" );
neoUnlock();
vgaHWProtect(1 ); /* Blank the screen */
vsync_start = info->var.yres + info->var.lower_margin;
vtotal = vsync_start + info->var.vsync_len + info->var.upper_margin;
/*
* This will allocate the datastructure and initialize all of the
* generic VGA registers.
*/
if (vgaHWInit(&info->var, par))
return -EINVAL;
/*
* The default value assigned by vgaHW.c is 0x41, but this does
* not work for NeoMagic.
*/
par->Attribute[16 ] = 0 x01;
switch (info->var.bits_per_pixel) {
case 8 :
par->CRTC[0 x13] = info->var.xres_virtual >> 3 ;
par->ExtCRTOffset = info->var.xres_virtual >> 11 ;
par->ExtColorModeSelect = 0 x11;
break ;
case 16 :
par->CRTC[0 x13] = info->var.xres_virtual >> 2 ;
par->ExtCRTOffset = info->var.xres_virtual >> 10 ;
par->ExtColorModeSelect = 0 x13;
break ;
case 24 :
par->CRTC[0 x13] = (info->var.xres_virtual * 3 ) >> 3 ;
par->ExtCRTOffset = (info->var.xres_virtual * 3 ) >> 11 ;
par->ExtColorModeSelect = 0 x14;
break ;
#ifdef NO_32BIT_SUPPORT_YET
case 32 : /* FIXME: guessed values */
par->CRTC[0 x13] = info->var.xres_virtual >> 1 ;
par->ExtCRTOffset = info->var.xres_virtual >> 9 ;
par->ExtColorModeSelect = 0 x15;
break ;
#endif
default :
break ;
}
par->ExtCRTDispAddr = 0 x10;
/* Vertical Extension */
par->VerticalExt = (((vtotal - 2 ) & 0 x400) >> 10 )
| (((info->var.yres - 1 ) & 0 x400) >> 9 )
| (((vsync_start) & 0 x400) >> 8 )
| (((vsync_start) & 0 x400) >> 7 );
/* Fast write bursts on unless disabled. */
if (par->pci_burst)
par->SysIfaceCntl1 = 0 x30;
else
par->SysIfaceCntl1 = 0 x00;
par->SysIfaceCntl2 = 0 xc0; /* VESA Bios sets this to 0x80! */
/* Initialize: by default, we want display config register to be read */
par->PanelDispCntlRegRead = 1 ;
/* Enable any user specified display devices. */
par->PanelDispCntlReg1 = 0 x00;
if (par->internal_display)
par->PanelDispCntlReg1 |= 0 x02;
if (par->external_display)
par->PanelDispCntlReg1 |= 0 x01;
/* If the user did not specify any display devices, then... */
if (par->PanelDispCntlReg1 == 0 x00) {
/* Default to internal (i.e., LCD) only. */
par->PanelDispCntlReg1 = vga_rgfx(NULL, 0 x20) & 0 x03;
}
/* If we are using a fixed mode, then tell the chip we are. */
switch (info->var.xres) {
case 1280 :
par->PanelDispCntlReg1 |= 0 x60;
break ;
case 1024 :
par->PanelDispCntlReg1 |= 0 x40;
break ;
case 800 :
par->PanelDispCntlReg1 |= 0 x20;
break ;
case 640 :
default :
break ;
}
/* Setup shadow register locking. */
switch (par->PanelDispCntlReg1 & 0 x03) {
case 0 x01: /* External CRT only mode: */
par->GeneralLockReg = 0 x00;
/* We need to program the VCLK for external display only mode. */
par->ProgramVCLK = 1 ;
break ;
case 0 x02: /* Internal LCD only mode: */
case 0 x03: /* Simultaneous internal/external (LCD/CRT) mode: */
par->GeneralLockReg = 0 x01;
/* Don't program the VCLK when using the LCD. */
par->ProgramVCLK = 0 ;
break ;
}
/*
* If the screen is to be stretched, turn on stretching for the
* various modes.
*
* OPTION_LCD_STRETCH means stretching should be turned off!
*/
par->PanelDispCntlReg2 = 0 x00;
par->PanelDispCntlReg3 = 0 x00;
if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0 x02) && /* LCD only */
(info->var.xres != par->NeoPanelWidth)) {
switch (info->var.xres) {
case 320 : /* Needs testing. KEM -- 24 May 98 */
case 400 : /* Needs testing. KEM -- 24 May 98 */
case 640 :
case 800 :
case 1024 :
lcd_stretch = 1 ;
par->PanelDispCntlReg2 |= 0 xC6;
break ;
default :
lcd_stretch = 0 ;
/* No stretching in these modes. */
}
} else
lcd_stretch = 0 ;
/*
* If the screen is to be centerd, turn on the centering for the
* various modes.
*/
par->PanelVertCenterReg1 = 0 x00;
par->PanelVertCenterReg2 = 0 x00;
par->PanelVertCenterReg3 = 0 x00;
par->PanelVertCenterReg4 = 0 x00;
par->PanelVertCenterReg5 = 0 x00;
par->PanelHorizCenterReg1 = 0 x00;
par->PanelHorizCenterReg2 = 0 x00;
par->PanelHorizCenterReg3 = 0 x00;
par->PanelHorizCenterReg4 = 0 x00;
par->PanelHorizCenterReg5 = 0 x00;
if (par->PanelDispCntlReg1 & 0 x02) {
if (info->var.xres == par->NeoPanelWidth) {
/*
* No centering required when the requested display width
* equals the panel width.
*/
} else {
par->PanelDispCntlReg2 |= 0 x01;
par->PanelDispCntlReg3 |= 0 x10;
/* Calculate the horizontal and vertical offsets. */
if (!lcd_stretch) {
hoffset =
((par->NeoPanelWidth -
info->var.xres) >> 4 ) - 1 ;
voffset =
((par->NeoPanelHeight -
info->var.yres) >> 1 ) - 2 ;
} else {
/* Stretched modes cannot be centered. */
hoffset = 0 ;
voffset = 0 ;
}
switch (info->var.xres) {
case 320 : /* Needs testing. KEM -- 24 May 98 */
par->PanelHorizCenterReg3 = hoffset;
par->PanelVertCenterReg2 = voffset;
break ;
case 400 : /* Needs testing. KEM -- 24 May 98 */
par->PanelHorizCenterReg4 = hoffset;
par->PanelVertCenterReg1 = voffset;
break ;
case 640 :
par->PanelHorizCenterReg1 = hoffset;
par->PanelVertCenterReg3 = voffset;
break ;
case 800 :
par->PanelHorizCenterReg2 = hoffset;
par->PanelVertCenterReg4 = voffset;
break ;
case 1024 :
par->PanelHorizCenterReg5 = hoffset;
par->PanelVertCenterReg5 = voffset;
break ;
case 1280 :
default :
/* No centering in these modes. */
break ;
}
}
}
par->biosMode =
neoFindMode(info->var.xres, info->var.yres,
info->var.bits_per_pixel);
/*
* Calculate the VCLK that most closely matches the requested dot
* clock.
*/
neoCalcVCLK(info, par, PICOS2KHZ(info->var.pixclock));
/* Since we program the clocks ourselves, always use VCLK3. */
par->MiscOutReg |= 0 x0C;
/* alread unlocked above */
/* BOGUS vga_wgfx(NULL, 0x09, 0x26); */
/* don't know what this is, but it's 0 from bootup anyway */
vga_wgfx(NULL, 0 x15, 0 x00);
/* was set to 0x01 by my bios in text and vesa modes */
vga_wgfx(NULL, 0 x0A, par->GeneralLockReg);
/*
* The color mode needs to be set before calling vgaHWRestore
* to ensure the DAC is initialized properly.
*
* NOTE: Make sure we don't change bits make sure we don't change
* any reserved bits.
*/
temp = vga_rgfx(NULL, 0 x90);
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
temp &= 0 xF0; /* Save bits 7:4 */
temp |= (par->ExtColorModeSelect & ~0 xF0);
break ;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
temp &= 0 x70; /* Save bits 6:4 */
temp |= (par->ExtColorModeSelect & ~0 x70);
break ;
}
vga_wgfx(NULL, 0 x90, temp);
/*
* In some rare cases a lockup might occur if we don't delay
* here. (Reported by Miles Lane)
*/
//mdelay(200);
/*
* Disable horizontal and vertical graphics and text expansions so
* that vgaHWRestore works properly.
*/
temp = vga_rgfx(NULL, 0 x25);
temp &= 0 x39;
vga_wgfx(NULL, 0 x25, temp);
/*
* Sleep for 200ms to make sure that the two operations above have
* had time to take effect.
*/
mdelay(200 );
/*
* This function handles restoring the generic VGA registers. */
vgaHWRestore(info, par);
/* linear colormap for non palettized modes */
switch (info->var.bits_per_pixel) {
case 8 :
/* PseudoColor, 256 */
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
break ;
case 16 :
/* TrueColor, 64k */
info->fix.visual = FB_VISUAL_TRUECOLOR;
for (i = 0 ; i < 64 ; i++) {
outb(i, 0 x3c8);
outb(i << 1 , 0 x3c9);
outb(i, 0 x3c9);
outb(i << 1 , 0 x3c9);
}
break ;
case 24 :
#ifdef NO_32BIT_SUPPORT_YET
case 32 :
#endif
/* TrueColor, 16m */
info->fix.visual = FB_VISUAL_TRUECOLOR;
for (i = 0 ; i < 256 ; i++) {
outb(i, 0 x3c8);
outb(i, 0 x3c9);
outb(i, 0 x3c9);
outb(i, 0 x3c9);
}
break ;
}
vga_wgfx(NULL, 0 x0E, par->ExtCRTDispAddr);
vga_wgfx(NULL, 0 x0F, par->ExtCRTOffset);
temp = vga_rgfx(NULL, 0 x10);
temp &= 0 x0F; /* Save bits 3:0 */
temp |= (par->SysIfaceCntl1 & ~0 x0F); /* VESA Bios sets bit 1! */
vga_wgfx(NULL, 0 x10, temp);
vga_wgfx(NULL, 0 x11, par->SysIfaceCntl2);
vga_wgfx(NULL, 0 x15, 0 /*par->SingleAddrPage */ );
vga_wgfx(NULL, 0 x16, 0 /*par->DualAddrPage */ );
temp = vga_rgfx(NULL, 0 x20);
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
temp &= 0 xFC; /* Save bits 7:2 */
temp |= (par->PanelDispCntlReg1 & ~0 xFC);
break ;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
temp &= 0 xDC; /* Save bits 7:6,4:2 */
temp |= (par->PanelDispCntlReg1 & ~0 xDC);
break ;
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
temp &= 0 x98; /* Save bits 7,4:3 */
temp |= (par->PanelDispCntlReg1 & ~0 x98);
break ;
}
vga_wgfx(NULL, 0 x20, temp);
temp = vga_rgfx(NULL, 0 x25);
temp &= 0 x38; /* Save bits 5:3 */
temp |= (par->PanelDispCntlReg2 & ~0 x38);
vga_wgfx(NULL, 0 x25, temp);
if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
temp = vga_rgfx(NULL, 0 x30);
temp &= 0 xEF; /* Save bits 7:5 and bits 3:0 */
temp |= (par->PanelDispCntlReg3 & ~0 xEF);
vga_wgfx(NULL, 0 x30, temp);
}
vga_wgfx(NULL, 0 x28, par->PanelVertCenterReg1);
vga_wgfx(NULL, 0 x29, par->PanelVertCenterReg2);
vga_wgfx(NULL, 0 x2a, par->PanelVertCenterReg3);
if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
vga_wgfx(NULL, 0 x32, par->PanelVertCenterReg4);
vga_wgfx(NULL, 0 x33, par->PanelHorizCenterReg1);
vga_wgfx(NULL, 0 x34, par->PanelHorizCenterReg2);
vga_wgfx(NULL, 0 x35, par->PanelHorizCenterReg3);
}
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
vga_wgfx(NULL, 0 x36, par->PanelHorizCenterReg4);
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
vga_wgfx(NULL, 0 x36, par->PanelHorizCenterReg4);
vga_wgfx(NULL, 0 x37, par->PanelVertCenterReg5);
vga_wgfx(NULL, 0 x38, par->PanelHorizCenterReg5);
clock_hi = 1 ;
}
/* Program VCLK3 if needed. */
if (par->ProgramVCLK && ((vga_rgfx(NULL, 0 x9B) != par->VCLK3NumeratorLow)
|| (vga_rgfx(NULL, 0 x9F) != par->VCLK3Denominator)
|| (clock_hi && ((vga_rgfx(NULL, 0 x8F) & ~0 x0f)
!= (par->VCLK3NumeratorHigh &
~0 x0F))))) {
vga_wgfx(NULL, 0 x9B, par->VCLK3NumeratorLow);
if (clock_hi) {
temp = vga_rgfx(NULL, 0 x8F);
temp &= 0 x0F; /* Save bits 3:0 */
temp |= (par->VCLK3NumeratorHigh & ~0 x0F);
vga_wgfx(NULL, 0 x8F, temp);
}
vga_wgfx(NULL, 0 x9F, par->VCLK3Denominator);
}
if (par->biosMode)
vga_wcrt(NULL, 0 x23, par->biosMode);
vga_wgfx(NULL, 0 x93, 0 xc0); /* Gives 5x faster framebuffer writes !!! */
/* Program vertical extension register */
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
vga_wcrt(NULL, 0 x70, par->VerticalExt);
}
vgaHWProtect(0 ); /* Turn on screen */
/* Calling this also locks offset registers required in update_start */
neoLock(&par->state);
info->fix.line_length =
info->var.xres_virtual * (info->var.bits_per_pixel >> 3 );
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_accel_init(info, &info->var);
break ;
default :
break ;
}
return 0 ;
}
/*
* Pan or Wrap the Display
*/
static int neofb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct neofb_par *par = info->par;
struct vgastate *state = &par->state;
int oldExtCRTDispAddr;
int Base;
DBG("neofb_update_start" );
Base = (var->yoffset * info->var.xres_virtual + var->xoffset) >> 2 ;
Base *= (info->var.bits_per_pixel + 7 ) / 8 ;
neoUnlock();
/*
* These are the generic starting address registers.
*/
vga_wcrt(state->vgabase, 0 x0C, (Base & 0 x00FF00) >> 8 );
vga_wcrt(state->vgabase, 0 x0D, (Base & 0 x00FF));
/*
* Make sure we don't clobber some other bits that might already
* have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
* be needed.
*/
oldExtCRTDispAddr = vga_rgfx(NULL, 0 x0E);
vga_wgfx(state->vgabase, 0 x0E, (((Base >> 16 ) & 0 x0f) | (oldExtCRTDispAddr & 0 xf0)));
neoLock(state);
return 0 ;
}
static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *fb)
{
if (regno >= fb->cmap.len || regno > 255 )
return -EINVAL;
if (fb->var.bits_per_pixel <= 8 ) {
outb(regno, 0 x3c8);
outb(red >> 10 , 0 x3c9);
outb(green >> 10 , 0 x3c9);
outb(blue >> 10 , 0 x3c9);
} else if (regno < 16 ) {
switch (fb->var.bits_per_pixel) {
case 16 :
((u32 *) fb->pseudo_palette)[regno] =
((red & 0 xf800)) | ((green & 0 xfc00) >> 5 ) |
((blue & 0 xf800) >> 11 );
break ;
case 24 :
((u32 *) fb->pseudo_palette)[regno] =
((red & 0 xff00) << 8 ) | ((green & 0 xff00)) |
((blue & 0 xff00) >> 8 );
break ;
#ifdef NO_32BIT_SUPPORT_YET
case 32 :
((u32 *) fb->pseudo_palette)[regno] =
((transp & 0 xff00) << 16 ) | ((red & 0 xff00) << 8 ) |
((green & 0 xff00)) | ((blue & 0 xff00) >> 8 );
break ;
#endif
default :
return 1 ;
}
}
return 0 ;
}
/*
* (Un)Blank the display.
*/
static int neofb_blank(int blank_mode, struct fb_info *info)
{
/*
* Blank the screen if blank_mode != 0, else unblank.
* Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
* e.g. a video mode which doesn't support it. Implements VESA suspend
* and powerdown modes for monitors, and backlight control on LCDs.
* blank_mode == 0: unblanked (backlight on)
* blank_mode == 1: blank (backlight on)
* blank_mode == 2: suspend vsync (backlight off)
* blank_mode == 3: suspend hsync (backlight off)
* blank_mode == 4: powerdown (backlight off)
*
* wms...Enable VESA DPMS compatible powerdown mode
* run "setterm -powersave powerdown" to take advantage
*/
struct neofb_par *par = info->par;
int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
/*
* Read back the register bits related to display configuration. They might
* have been changed underneath the driver via Fn key stroke.
*/
neoUnlock();
tmpdisp = vga_rgfx(NULL, 0 x20) & 0 x03;
neoLock(&par->state);
/* In case we blank the screen, we want to store the possibly new
* configuration in the driver. During un-blank, we re-apply this setting,
* since the LCD bit will be cleared in order to switch off the backlight.
*/
if (par->PanelDispCntlRegRead) {
par->PanelDispCntlReg1 = tmpdisp;
}
par->PanelDispCntlRegRead = !blank_mode;
switch (blank_mode) {
case FB_BLANK_POWERDOWN: /* powerdown - both sync lines down */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0 ; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
NEO_GR01_SUPPRESS_VSYNC;
#ifdef CONFIG_TOSHIBA
/* Do we still need this ? */
/* attempt to turn off backlight on toshiba; also turns off external */
{
SMMRegisters regs;
regs.eax = 0 xff00; /* HCI_SET */
regs.ebx = 0 x0002; /* HCI_BACKLIGHT */
regs.ecx = 0 x0000; /* HCI_DISABLE */
tosh_smm(®s);
}
#endif
break ;
case FB_BLANK_HSYNC_SUSPEND: /* hsync off */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0 ; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
break ;
case FB_BLANK_VSYNC_SUSPEND: /* vsync off */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0 ; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
break ;
case FB_BLANK_NORMAL: /* just blank screen (backlight stays on) */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
/*
* During a blank operation with the LID shut, we might store "LCD off"
* by mistake. Due to timing issues, the BIOS may switch the lights
* back on, and we turn it back off once we "unblank".
*
* So here is an attempt to implement ">=" - if we are in the process
* of unblanking, and the LCD bit is unset in the driver but set in the
* register, we must keep it.
*/
lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0 x02); /* LCD normal */
dpmsflags = 0 x00; /* no hsync/vsync suppression */
break ;
case FB_BLANK_UNBLANK: /* unblank */
seqflags = 0 ; /* Enable sequencer */
lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0 x02); /* LCD normal */
dpmsflags = 0 x00; /* no hsync/vsync suppression */
#ifdef CONFIG_TOSHIBA
/* Do we still need this ? */
/* attempt to re-enable backlight/external on toshiba */
{
SMMRegisters regs;
regs.eax = 0 xff00; /* HCI_SET */
regs.ebx = 0 x0002; /* HCI_BACKLIGHT */
regs.ecx = 0 x0001; /* HCI_ENABLE */
tosh_smm(®s);
}
#endif
break ;
default : /* Anything else we don't understand; return 1 to tell
* fb_blank we didn't aactually do anything */
return 1 ;
}
neoUnlock();
reg = (vga_rseq(NULL, 0 x01) & ~0 x20) | seqflags;
vga_wseq(NULL, 0 x01, reg);
reg = (vga_rgfx(NULL, 0 x20) & ~0 x02) | lcdflags;
vga_wgfx(NULL, 0 x20, reg);
reg = (vga_rgfx(NULL, 0 x01) & ~0 xF0) | 0 x80 | dpmsflags;
vga_wgfx(NULL, 0 x01, reg);
neoLock(&par->state);
return 0 ;
}
static void
neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct neofb_par *par = info->par;
u_long dst, rop;
dst = rect->dx + rect->dy * info->var.xres_virtual;
rop = rect->rop ? 0 x060000 : 0 x0c0000;
neo2200_wait_fifo(info, 4 );
/* set blt control */
writel(NEO_BC3_FIFO_EN |
NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
// NEO_BC3_DST_XY_ADDR |
// NEO_BC3_SRC_XY_ADDR |
rop, &par->neo2200->bltCntl);
switch (info->var.bits_per_pixel) {
case 8 :
writel(rect->color, &par->neo2200->fgColor);
break ;
case 16 :
case 24 :
writel(((u32 *) (info->pseudo_palette))[rect->color],
&par->neo2200->fgColor);
break ;
}
writel(dst * ((info->var.bits_per_pixel + 7 ) >> 3 ),
&par->neo2200->dstStart);
writel((rect->height << 16 ) | (rect->width & 0 xffff),
&par->neo2200->xyExt);
}
static void
neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
struct neofb_par *par = info->par;
u_long src, dst, bltCntl;
bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0 x0C0000;
if ((dy > sy) || ((dy == sy) && (dx > sx))) {
/* Start with the lower right corner */
sy += (area->height - 1 );
dy += (area->height - 1 );
sx += (area->width - 1 );
dx += (area->width - 1 );
bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
}
src = sx * (info->var.bits_per_pixel >> 3 ) + sy*info->fix.line_length;
dst = dx * (info->var.bits_per_pixel >> 3 ) + dy*info->fix.line_length;
neo2200_wait_fifo(info, 4 );
/* set blt control */
writel(bltCntl, &par->neo2200->bltCntl);
writel(src, &par->neo2200->srcStart);
writel(dst, &par->neo2200->dstStart);
writel((area->height << 16 ) | (area->width & 0 xffff),
&par->neo2200->xyExt);
}
static void
neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
{
struct neofb_par *par = info->par;
int s_pitch = (image->width * image->depth + 7 ) >> 3 ;
int scan_align = info->pixmap.scan_align - 1 ;
int buf_align = info->pixmap.buf_align - 1 ;
int bltCntl_flags, d_pitch, data_len;
// The data is padded for the hardware
d_pitch = (s_pitch + scan_align) & ~scan_align;
data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
neo2200_sync(info);
if (image->depth == 1 ) {
if (info->var.bits_per_pixel == 24 && image->width < 16 ) {
/* FIXME. There is a bug with accelerated color-expanded
* transfers in 24 bit mode if the image being transferred
* is less than 16 bits wide. This is due to insufficient
* padding when writing the image. We need to adjust
* struct fb_pixmap. Not yet done. */
cfb_imageblit(info, image);
return ;
}
bltCntl_flags = NEO_BC0_SRC_MONO;
} else if (image->depth == info->var.bits_per_pixel) {
bltCntl_flags = 0 ;
} else {
/* We don't currently support hardware acceleration if image
* depth is different from display */
cfb_imageblit(info, image);
return ;
}
switch (info->var.bits_per_pixel) {
case 8 :
writel(image->fg_color, &par->neo2200->fgColor);
writel(image->bg_color, &par->neo2200->bgColor);
break ;
case 16 :
case 24 :
writel(((u32 *) (info->pseudo_palette))[image->fg_color],
&par->neo2200->fgColor);
writel(((u32 *) (info->pseudo_palette))[image->bg_color],
&par->neo2200->bgColor);
break ;
}
writel(NEO_BC0_SYS_TO_VID |
NEO_BC3_SKIP_MAPPING | bltCntl_flags |
// NEO_BC3_DST_XY_ADDR |
0 x0c0000, &par->neo2200->bltCntl);
writel(0 , &par->neo2200->srcStart);
// par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
writel(((image->dx & 0 xffff) * (info->var.bits_per_pixel >> 3 ) +
image->dy * info->fix.line_length), &par->neo2200->dstStart);
writel((image->height << 16 ) | (image->width & 0 xffff),
&par->neo2200->xyExt);
memcpy_toio(par->mmio_vbase + 0 x100000, image->data, data_len);
}
static void
neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_fillrect(info, rect);
break ;
default :
cfb_fillrect(info, rect);
break ;
}
}
static void
neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_copyarea(info, area);
break ;
default :
cfb_copyarea(info, area);
break ;
}
}
static void
neofb_imageblit(struct fb_info *info, const struct fb_image *image)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_imageblit(info, image);
break ;
default :
cfb_imageblit(info, image);
break ;
}
}
static int
neofb_sync(struct fb_info *info)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_sync(info);
break ;
default :
break ;
}
return 0 ;
}
/*
static void
neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
{
//memset_io(info->sprite.addr, 0xff, 1);
}
static int
neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct neofb_par *par = (struct neofb_par *) info->par;
* Disable cursor *
write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
if (cursor->set & FB_CUR_SETPOS) {
u32 x = cursor->image.dx;
u32 y = cursor->image.dy;
info->cursor.image.dx = x;
info->cursor.image.dy = y;
write_le32(NEOREG_CURSX, x, par);
write_le32(NEOREG_CURSY, y, par);
}
if (cursor->set & FB_CUR_SETSIZE) {
info->cursor.image.height = cursor->image.height;
info->cursor.image.width = cursor->image.width;
}
if (cursor->set & FB_CUR_SETHOT)
info->cursor.hot = cursor->hot;
if (cursor->set & FB_CUR_SETCMAP) {
if (cursor->image.depth == 1) {
u32 fg = cursor->image.fg_color;
u32 bg = cursor->image.bg_color;
info->cursor.image.fg_color = fg;
info->cursor.image.bg_color = bg;
fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
write_le32(NEOREG_CURSFGCOLOR, fg, par);
write_le32(NEOREG_CURSBGCOLOR, bg, par);
}
}
if (cursor->set & FB_CUR_SETSHAPE)
fb_load_cursor_image(info);
if (info->cursor.enable)
write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
return 0;
}
*/
static const struct fb_ops neofb_ops = {
.owner = THIS_MODULE,
.fb_open = neofb_open,
.fb_release = neofb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = neofb_check_var,
.fb_set_par = neofb_set_par,
.fb_setcolreg = neofb_setcolreg,
.fb_pan_display = neofb_pan_display,
.fb_blank = neofb_blank,
.fb_sync = neofb_sync,
.fb_fillrect = neofb_fillrect,
.fb_copyarea = neofb_copyarea,
.fb_imageblit = neofb_imageblit,
__FB_DEFAULT_IOMEM_OPS_MMAP,
};
/* --------------------------------------------------------------------- */
static struct fb_videomode mode800x480 = {
.xres = 800 ,
.yres = 480 ,
.pixclock = 25000 ,
.left_margin = 88 ,
.right_margin = 40 ,
.upper_margin = 23 ,
.lower_margin = 1 ,
.hsync_len = 128 ,
.vsync_len = 4 ,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
};
static int neo_map_mmio(struct fb_info *info, struct pci_dev *dev)
{
struct neofb_par *par = info->par;
DBG("neo_map_mmio" );
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
info->fix.mmio_start = pci_resource_start(dev, 0 )+
0 x100000;
break ;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
info->fix.mmio_start = pci_resource_start(dev, 0 )+
0 x200000;
break ;
case FB_ACCEL_NEOMAGIC_NM2160:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
info->fix.mmio_start = pci_resource_start(dev, 1 );
break ;
default :
info->fix.mmio_start = pci_resource_start(dev, 0 );
}
info->fix.mmio_len = MMIO_SIZE;
if (!request_mem_region
(info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O" )) {
printk("neofb: memory mapped IO in use\n" );
return -EBUSY;
}
par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
if (!par->mmio_vbase) {
printk("neofb: unable to map memory mapped IO\n" );
release_mem_region(info->fix.mmio_start,
info->fix.mmio_len);
return -ENOMEM;
} else
printk(KERN_INFO "neofb: mapped io at %p\n" ,
par->mmio_vbase);
return 0 ;
}
static void neo_unmap_mmio(struct fb_info *info)
{
struct neofb_par *par = info->par;
DBG("neo_unmap_mmio" );
iounmap(par->mmio_vbase);
par->mmio_vbase = NULL;
release_mem_region(info->fix.mmio_start,
info->fix.mmio_len);
}
static int neo_map_video(struct fb_info *info, struct pci_dev *dev,
int video_len)
{
//unsigned long addr;
struct neofb_par *par = info->par;
DBG("neo_map_video" );
info->fix.smem_start = pci_resource_start(dev, 0 );
info->fix.smem_len = video_len;
if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
"frame buffer" )) {
printk("neofb: frame buffer in use\n" );
return -EBUSY;
}
info->screen_base =
ioremap_wc(info->fix.smem_start, info->fix.smem_len);
if (!info->screen_base) {
printk("neofb: unable to map screen memory\n" );
release_mem_region(info->fix.smem_start,
info->fix.smem_len);
return -ENOMEM;
} else
printk(KERN_INFO "neofb: mapped framebuffer at %p\n" ,
info->screen_base);
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
pci_resource_len(dev, 0 ));
/* Clear framebuffer, it's all white in memory after boot */
memset_io(info->screen_base, 0 , info->fix.smem_len);
/* Allocate Cursor drawing pad.
info->fix.smem_len -= PAGE_SIZE;
addr = info->fix.smem_start + info->fix.smem_len;
write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
((0x0ff0 & (addr >> 10)) >> 4), par);
addr = (unsigned long) info->screen_base + info->fix.smem_len;
info->sprite.addr = (u8 *) addr; */
return 0 ;
}
static void neo_unmap_video(struct fb_info *info)
{
struct neofb_par *par = info->par;
DBG("neo_unmap_video" );
arch_phys_wc_del(par->wc_cookie);
iounmap(info->screen_base);
info->screen_base = NULL;
release_mem_region(info->fix.smem_start,
info->fix.smem_len);
}
static int neo_scan_monitor(struct fb_info *info)
{
struct neofb_par *par = info->par;
unsigned char type, display;
int w;
// Eventually we will have i2c support.
info->monspecs.modedb = kmalloc(sizeof (struct fb_videomode), GFP_KERNEL);
if (!info->monspecs.modedb)
return -ENOMEM;
info->monspecs.modedb_len = 1 ;
/* Determine the panel type */
vga_wgfx(NULL, 0 x09, 0 x26);
type = vga_rgfx(NULL, 0 x21);
display = vga_rgfx(NULL, 0 x20);
if (!par->internal_display && !par->external_display) {
par->internal_display = display & 2 || !(display & 3 ) ? 1 : 0 ;
par->external_display = display & 1 ;
printk (KERN_INFO "Autodetected %s display\n" ,
par->internal_display && par->external_display ? "simultaneous" :
par->internal_display ? "internal" : "external" );
}
/* Determine panel width -- used in NeoValidMode. */
w = vga_rgfx(NULL, 0 x20);
vga_wgfx(NULL, 0 x09, 0 x00);
switch ((w & 0 x18) >> 3 ) {
case 0 x00:
// 640x480@60
par->NeoPanelWidth = 640 ;
par->NeoPanelHeight = 480 ;
memcpy(info->monspecs.modedb, &vesa_modes[3 ], sizeof (struct fb_videomode));
break ;
case 0 x01:
par->NeoPanelWidth = 800 ;
if (par->libretto) {
par->NeoPanelHeight = 480 ;
memcpy(info->monspecs.modedb, &mode800x480, sizeof (struct fb_videomode));
} else {
// 800x600@60
par->NeoPanelHeight = 600 ;
memcpy(info->monspecs.modedb, &vesa_modes[8 ], sizeof (struct fb_videomode));
}
break ;
case 0 x02:
// 1024x768@60
par->NeoPanelWidth = 1024 ;
par->NeoPanelHeight = 768 ;
memcpy(info->monspecs.modedb, &vesa_modes[13 ], sizeof (struct fb_videomode));
break ;
case 0 x03:
/* 1280x1024@60 panel support needs to be added */
#ifdef NOT_DONE
par->NeoPanelWidth = 1280 ;
par->NeoPanelHeight = 1024 ;
memcpy(info->monspecs.modedb, &vesa_modes[20 ], sizeof (struct fb_videomode));
break ;
#else
printk(KERN_ERR
"neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n" );
kfree(info->monspecs.modedb);
return -1 ;
#endif
default :
// 640x480@60
par->NeoPanelWidth = 640 ;
par->NeoPanelHeight = 480 ;
memcpy(info->monspecs.modedb, &vesa_modes[3 ], sizeof (struct fb_videomode));
break ;
}
printk(KERN_INFO "Panel is a %dx%d %s %s display\n" ,
par->NeoPanelWidth,
par->NeoPanelHeight,
(type & 0 x02) ? "color" : "monochrome" ,
(type & 0 x10) ? "TFT" : "dual scan" );
return 0 ;
}
static int neo_init_hw(struct fb_info *info)
{
struct neofb_par *par = info->par;
int videoRam = 896 ;
int maxClock = 65000 ;
int CursorOff = 0 x100;
DBG("neo_init_hw" );
neoUnlock();
#if 0
printk(KERN_DEBUG "--- Neo extended register dump ---\n" );
for (int w = 0 ; w < 0 x85; w++)
printk(KERN_DEBUG "CR %p: %p\n" , (void *) w,
(void *) vga_rcrt(NULL, w));
for (int w = 0 ; w < 0 xC7; w++)
printk(KERN_DEBUG "GR %p: %p\n" , (void *) w,
(void *) vga_rgfx(NULL, w));
#endif
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
videoRam = 896 ;
maxClock = 65000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
videoRam = 1152 ;
maxClock = 80000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2160:
videoRam = 2048 ;
maxClock = 90000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2200:
videoRam = 2560 ;
maxClock = 110000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2230:
videoRam = 3008 ;
maxClock = 110000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2360:
videoRam = 4096 ;
maxClock = 110000 ;
break ;
case FB_ACCEL_NEOMAGIC_NM2380:
videoRam = 6144 ;
maxClock = 110000 ;
break ;
}
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
CursorOff = 0 x100;
break ;
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
CursorOff = 0 x100;
break ;
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
CursorOff = 0 x1000;
par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
break ;
}
/*
info->sprite.size = CursorMem;
info->sprite.scan_align = 1;
info->sprite.buf_align = 1;
info->sprite.flags = FB_PIXMAP_IO;
info->sprite.outbuf = neofb_draw_cursor;
*/
par->maxClock = maxClock;
par->cursorOff = CursorOff;
return videoRam * 1024 ;
}
static struct fb_info *neo_alloc_fb_info(struct pci_dev *dev,
const struct pci_device_id *id)
{
struct fb_info *info;
struct neofb_par *par;
info = framebuffer_alloc(sizeof (struct neofb_par), &dev->dev);
if (!info)
return NULL;
par = info->par;
info->fix.accel = id->driver_data;
par->pci_burst = !nopciburst;
par->lcd_stretch = !nostretch;
par->libretto = libretto;
par->internal_display = internal;
par->external_display = external;
info->flags = FBINFO_HWACCEL_YPAN;
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
strscpy(info->fix.id, "MagicGraph128" , sizeof (info->fix.id));
break ;
case FB_ACCEL_NEOMAGIC_NM2090:
strscpy(info->fix.id, "MagicGraph128V" , sizeof (info->fix.id));
break ;
case FB_ACCEL_NEOMAGIC_NM2093:
strscpy(info->fix.id, "MagicGraph128ZV" , sizeof (info->fix.id));
break ;
case FB_ACCEL_NEOMAGIC_NM2097:
strscpy(info->fix.id, "Mag.Graph128ZV+" , sizeof (info->fix.id));
break ;
case FB_ACCEL_NEOMAGIC_NM2160:
strscpy(info->fix.id, "MagicGraph128XD" , sizeof (info->fix.id));
break ;
case FB_ACCEL_NEOMAGIC_NM2200:
strscpy(info->fix.id, "MagicGraph256AV" , sizeof (info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break ;
case FB_ACCEL_NEOMAGIC_NM2230:
strscpy(info->fix.id, "Mag.Graph256AV+" , sizeof (info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break ;
case FB_ACCEL_NEOMAGIC_NM2360:
strscpy(info->fix.id, "MagicGraph256ZX" , sizeof (info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break ;
case FB_ACCEL_NEOMAGIC_NM2380:
strscpy(info->fix.id, "Mag.Graph256XL+" , sizeof (info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break ;
}
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.type_aux = 0 ;
info->fix.xpanstep = 0 ;
info->fix.ypanstep = 4 ;
info->fix.ywrapstep = 0 ;
info->fix.accel = id->driver_data;
info->fbops = &neofb_ops;
info->pseudo_palette = par->palette;
return info;
}
static void neo_free_fb_info(struct fb_info *info)
{
if (info) {
/*
* Free the colourmap
*/
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
}
/* --------------------------------------------------------------------- */
static int neofb_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct fb_info *info;
u_int h_sync, v_sync;
int video_len, err;
DBG("neofb_probe" );
err = aperture_remove_conflicting_pci_devices(dev, "neofb" );
if (err)
return err;
err = pci_enable_device(dev);
if (err)
return err;
err = -ENOMEM;
info = neo_alloc_fb_info(dev, id);
if (!info)
return err;
err = neo_map_mmio(info, dev);
if (err)
goto err_map_mmio;
err = neo_scan_monitor(info);
if (err)
goto err_scan_monitor;
video_len = neo_init_hw(info);
if (video_len < 0 ) {
err = video_len;
goto err_init_hw;
}
err = neo_map_video(info, dev, video_len);
if (err)
goto err_init_hw;
if (!fb_find_mode(&info->var, info, mode_option, NULL, 0 ,
info->monspecs.modedb, 16 )) {
printk(KERN_ERR "neofb: Unable to find usable video mode.\n" );
err = -EINVAL;
goto err_map_video;
}
/*
* Calculate the hsync and vsync frequencies. Note that
* we split the 1e12 constant up so that we can preserve
* the precision and fit the results into 32-bit registers.
* (1953125000 * 512 = 1e12)
*/
h_sync = 1953125000 / info->var.pixclock;
h_sync =
h_sync * 512 / (info->var.xres + info->var.left_margin +
info->var.right_margin + info->var.hsync_len);
v_sync =
h_sync / (info->var.yres + info->var.upper_margin +
info->var.lower_margin + info->var.vsync_len);
printk(KERN_INFO "neofb v" NEOFB_VERSION
": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n" ,
info->fix.smem_len >> 10 , info->var.xres,
info->var.yres, h_sync / 1000 , h_sync % 1000 , v_sync);
err = fb_alloc_cmap(&info->cmap, 256 , 0 );
if (err < 0 )
goto err_map_video;
err = register_framebuffer(info);
if (err < 0 )
goto err_reg_fb;
fb_info(info, "%s frame buffer device\n" , info->fix.id);
/*
* Our driver data
*/
pci_set_drvdata(dev, info);
return 0 ;
err_reg_fb:
fb_dealloc_cmap(&info->cmap);
err_map_video:
neo_unmap_video(info);
err_init_hw:
fb_destroy_modedb(info->monspecs.modedb);
err_scan_monitor:
neo_unmap_mmio(info);
err_map_mmio:
neo_free_fb_info(info);
return err;
}
static void neofb_remove(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
DBG("neofb_remove" );
if (info) {
unregister_framebuffer(info);
neo_unmap_video(info);
fb_destroy_modedb(info->monspecs.modedb);
neo_unmap_mmio(info);
neo_free_fb_info(info);
}
}
static const struct pci_device_id neofb_devices[] = {
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2070},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2090},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2093},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2097},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2160},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2200},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2230},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2360},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , FB_ACCEL_NEOMAGIC_NM2380},
{0 , 0 , 0 , 0 , 0 , 0 , 0 }
};
MODULE_DEVICE_TABLE(pci, neofb_devices);
static struct pci_driver neofb_driver = {
.name = "neofb" ,
.id_table = neofb_devices,
.probe = neofb_probe,
.remove = neofb_remove,
};
/* ************************* init in-kernel code ************************** */
#ifndef MODULE
static int __init neofb_setup(char *options)
{
char *this_opt;
DBG("neofb_setup" );
if (!options || !*options)
return 0 ;
while ((this_opt = strsep(&options, "," )) != NULL) {
if (!*this_opt)
continue ;
if (!strncmp(this_opt, "internal" , 8 ))
internal = 1 ;
else if (!strncmp(this_opt, "external" , 8 ))
external = 1 ;
else if (!strncmp(this_opt, "nostretch" , 9 ))
nostretch = 1 ;
else if (!strncmp(this_opt, "nopciburst" , 10 ))
nopciburst = 1 ;
else if (!strncmp(this_opt, "libretto" , 8 ))
libretto = 1 ;
else
mode_option = this_opt;
}
return 0 ;
}
#endif /* MODULE */
static int __init neofb_init(void )
{
#ifndef MODULE
char *option = NULL;
#endif
if (fb_modesetting_disabled("neofb" ))
return -ENODEV;
#ifndef MODULE
if (fb_get_options("neofb" , &option))
return -ENODEV;
neofb_setup(option);
#endif
return pci_register_driver(&neofb_driver);
}
module_init(neofb_init);
#ifdef MODULE
static void __exit neofb_exit(void )
{
pci_unregister_driver(&neofb_driver);
}
module_exit(neofb_exit);
#endif /* MODULE */
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