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Commit 3fb529dc authored by Greg Ungerer's avatar Greg Ungerer Committed by Linus Torvalds
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[PATCH] m68knommu: big clean/fix of Dragonball frame buffer driver 

Big cleanup of the Motorola DragonBall 68x328 frame buffer.  It was
quite broken before. 

Patch from Georges Menie <georges@menie.org>.
parent 1d2e3bff
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drivers/video/68328fb.c
View file @ 3fb529dc
/* /*
* linux/arch/m68knommu/console/68328fb.c -- Low level implementation of the * linux/drivers/video/68328fb.c -- Low level implementation of the
* mc68328 LCD frame buffer device * mc68x328 LCD frame buffer device
*
* Copyright (C) 1998,1999 Kenneth Albanowski <kjahds@kjahds.com>,
* The Silver Hammer Group, Ltd.
* *
* Copyright (C) 2003 Georges Menie
* *
* This file is based on the Amiga CyberVision frame buffer device (Cyberfb.c): * This driver assumes an already configured controller (e.g. from config.c)
* Keep the code clean of board specific initialization.
* *
* Copyright (C) 1996 Martin Apel * This code has not been tested with colors, colormap management functions
* Geert Uytterhoeven * are minimal (no colormap data written to the 68328 registers...)
* *
* initial version of this driver:
* Copyright (C) 1998,1999 Kenneth Albanowski <kjahds@kjahds.com>,
* The Silver Hammer Group, Ltd.
* *
* This file is based on the Amiga frame buffer device (amifb.c): * this version is based on :
*
* Copyright (C) 1995 Geert Uytterhoeven
* *
* linux/drivers/video/vfb.c -- Virtual frame buffer device
* *
* History: * Copyright (C) 2002 James Simmons
* - 17 Feb 98: Original version by Kenneth Albanowski <kjahds@kjahds.com>
* *
* Copyright (C) 1997 Geert Uytterhoeven
* *
* This file is subject to the terms and conditions of the GNU General Public * 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 * License. See the file COPYING in the main directory of this archive for
* for more details. * more details.
*/ */
#include <linux/module.h> #include <linux/module.h>
...@@ -33,179 +34,241 @@ ...@@ -33,179 +34,241 @@
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/tty.h> #include <linux/tty.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/config.h> #include <linux/interrupt.h>
#include <asm/segment.h> #include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <linux/fb.h> #include <linux/fb.h>
#include <linux/init.h>
#if defined(CONFIG_M68VZ328)
#include <asm/MC68VZ328.h>
#elif defined(CONFIG_M68EZ328)
#include <asm/MC68EZ328.h>
#elif defined(CONFIG_M68328)
#include <asm/MC68328.h>
#else
#error wrong architecture for the MC68x328 frame buffer device
#endif
#define arraysize(x) (sizeof(x)/sizeof(*(x))) #if defined(CONFIG_FB_68328_INVERT)
#define MC68X328FB_MONO_VISUAL FB_VISUAL_MONO01
static struct fb_info fb_info; #else
#define MC68X328FB_MONO_VISUAL FB_VISUAL_MONO10
/* #endif
* mc68328vision Graphics Board
*/
#define CYBER8_WIDTH 1152
#define CYBER8_HEIGHT 886
#define CYBER8_PIXCLOCK 12500 /* ++Geert: Just a guess */
#define CYBER16_WIDTH 800
#define CYBER16_HEIGHT 600
#define CYBER16_PIXCLOCK 25000 /* ++Geert: Just a guess */
#define PALM_WIDTH 160
#define PALM_HEIGHT 160
/*static int mc68328Key = 0;
static u_char mc68328_colour_table [256][4];*/
/*
* Predefined Video Mode Names
*/
static char *mc68328_fb_modenames[] = {
/*
* Autodetect (Default) Video Mode
*/
"default",
/*
* Predefined Video Modes
*/
"Palm", /* Palm Pilot devices, 1.0 and higher */
"Palm Grey", /* Palm Pilot devices, 1.0 and higher */
/*
* Dummy Video Modes
*/
"dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
"dummy",
"dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
"dummy",
"dummy", "dummy", "dummy", "dummy",
/* static u_long videomemory;
* User Defined Video Modes static u_long videomemorysize;
*
* This doesn't work yet!!
*/
"user0", "user1", "user2", "user3", "user4", "user5", "user6", static struct fb_info fb_info;
"user7" static u32 mc68x328fb_pseudo_palette[17];
static struct fb_var_screeninfo mc68x328fb_default __initdata = {
.red = { 0, 8, 0 },
.green = { 0, 8, 0 },
.blue = { 0, 8, 0 },
.activate = FB_ACTIVATE_TEST,
.height = -1,
.width = -1,
.pixclock = 20000,
.left_margin = 64,
.right_margin = 64,
.upper_margin = 32,
.lower_margin = 32,
.hsync_len = 64,
.vsync_len = 2,
.vmode = FB_VMODE_NONINTERLACED,
}; };
static struct fb_fix_screeninfo mc68x328fb_fix __initdata = {
.id = "68328fb",
.type = FB_TYPE_PACKED_PIXELS,
.xpanstep = 1,
.ypanstep = 1,
.ywrapstep = 1,
.accel = FB_ACCEL_NONE,
};
/* /*
* Predefined Video Mode Definitions * Interface used by the world
*/ */
int mc68x328fb_init(void);
static struct fb_var_screeninfo mc68328_fb_predefined[] = { int mc68x328fb_setup(char *);
static int mc68x328fb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info);
static int mc68x328fb_set_par(struct fb_info *info);
static int mc68x328fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int mc68x328fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info);
static int mc68x328fb_mmap(struct fb_info *info, struct file *file,
struct vm_area_struct *vma);
static struct fb_ops mc68x328fb_ops = {
.fb_check_var = mc68x328fb_check_var,
.fb_set_par = mc68x328fb_set_par,
.fb_setcolreg = mc68x328fb_setcolreg,
.fb_pan_display = mc68x328fb_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_cursor = soft_cursor,
.fb_mmap = mc68x328fb_mmap,
};
/* /*
* Autodetect (Default) Video Mode * Internal routines
*/ */
{0,}, static u_long get_line_length(int xres_virtual, int bpp)
{
/* u_long length;
* Predefined Video Modes
*/
{ length = xres_virtual * bpp;
/* Palm */ length = (length + 31) & ~31;
PALM_WIDTH, PALM_HEIGHT, PALM_WIDTH, PALM_HEIGHT, length >>= 3;
0, 0, return (length);
1, -1, }
{0, 1, 0}, {0, 1, 0}, {0, 1, 0}, {0, 0, 0},
0, 0,
-1, -1, /* phys height, width */
FB_ACCEL_NONE,
0, 0, 0, 0, 0, 0, 0, /* timing */
0, /* sync */
FB_VMODE_NONINTERLACED},
{
/* Palm Grey */
PALM_WIDTH, PALM_HEIGHT, PALM_WIDTH, PALM_HEIGHT,
0, 0,
2, -1,
{0, 2, 0}, {0, 2, 0}, {0, 2, 0}, {0, 0, 0},
0, 0,
-1, -1, /* phys height, width */
FB_ACCEL_NONE,
0, 0, 0, 0, 0, 0, 0, /* timing */
0, /* sync */
FB_VMODE_NONINTERLACED},
/* /*
* Dummy Video Modes * Setting the video mode has been split into two parts.
* First part, xxxfb_check_var, must not write anything
* to hardware, it should only verify and adjust var.
* This means it doesn't alter par but it does use hardware
* data from it to check this var.
*/ */
{0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, static int mc68x328fb_check_var(struct fb_var_screeninfo *var,
{0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, struct fb_info *info)
{0,}, {0,}, {
u_long line_length;
/* /*
* User Defined Video Modes * FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal!
* as FB_VMODE_SMOOTH_XPAN is only used internally
*/ */
{0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,}, {0,} if (var->vmode & FB_VMODE_CONUPDATE) {
}; var->vmode |= FB_VMODE_YWRAP;
var->xoffset = info->var.xoffset;
static struct fb_fix_screeninfo mc68328_fix __initdata = { var->yoffset = info->var.yoffset;
.id = "mc68328"; }
.smem_len = 160 * 160 /8;
.type = FB_TYPE_PACKED_PIXELS;
.accel = FB_ACCEL_NONE;
};
#define NUM_TOTAL_MODES arraysize(mc68328_fb_predefined)
#define NUM_PREDEF_MODES (3)
static int mc68328fb_inverse = 0;
static int mc68328fb_mode = 0;
static int mc68328fbCursorMode = 0;
/* /*
* Some default modes * Some very basic checks
*/ */
if (!var->xres)
var->xres = 1;
if (!var->yres)
var->yres = 1;
if (var->xres > var->xres_virtual)
var->xres_virtual = var->xres;
if (var->yres > var->yres_virtual)
var->yres_virtual = var->yres;
if (var->bits_per_pixel <= 1)
var->bits_per_pixel = 1;
else if (var->bits_per_pixel <= 8)
var->bits_per_pixel = 8;
else if (var->bits_per_pixel <= 16)
var->bits_per_pixel = 16;
else if (var->bits_per_pixel <= 24)
var->bits_per_pixel = 24;
else if (var->bits_per_pixel <= 32)
var->bits_per_pixel = 32;
else
return -EINVAL;
#define PALM_DEFMODE (1) if (var->xres_virtual < var->xoffset + var->xres)
#define CYBER16_DEFMODE (2) var->xres_virtual = var->xoffset + var->xres;
if (var->yres_virtual < var->yoffset + var->yres)
var->yres_virtual = var->yoffset + var->yres;
/* /*
* Interface used by the world * Memory limit
*/ */
int mc68328_fb_init(void); line_length =
get_line_length(var->xres_virtual, var->bits_per_pixel);
static int mc68328fb_setcolreg(u_int regno, u_int red, u_int green, if (line_length * var->yres_virtual > videomemorysize)
u_int blue, u_int transp); return -ENOMEM;
static void mc68328fb_blank(int blank, struct fb_info *info);
/* /*
* Accelerated Functions used by the low level console driver * Now that we checked it we alter var. The reason being is that the video
* mode passed in might not work but slight changes to it might make it
* work. This way we let the user know what is acceptable.
*/ */
switch (var->bits_per_pixel) {
case 1:
case 8:
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
case 16: /* RGBA 5551 */
if (var->transp.length) {
var->red.offset = 0;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 5;
var->blue.offset = 10;
var->blue.length = 5;
var->transp.offset = 15;
var->transp.length = 1;
} else { /* RGB 565 */
var->red.offset = 0;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 11;
var->blue.length = 5;
var->transp.offset = 0;
var->transp.length = 0;
}
break;
case 24: /* RGB 888 */
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 16;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
case 32: /* RGBA 8888 */
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 16;
var->blue.length = 8;
var->transp.offset = 24;
var->transp.length = 8;
break;
}
var->red.msb_right = 0;
var->green.msb_right = 0;
var->blue.msb_right = 0;
var->transp.msb_right = 0;
void mc68328_WaitQueue(u_short fifo); return 0;
void mc68328_WaitBlit(void); }
void mc68328_BitBLT(u_short curx, u_short cury, u_short destx,
u_short desty, u_short width, u_short height,
u_short mode);
void mc68328_RectFill(u_short x, u_short y, u_short width, u_short height,
u_short mode, u_short color);
void mc68328_MoveCursor(u_short x, u_short y);
/* /* This routine actually sets the video mode. It's in here where we
* Internal routines * the hardware state info->par and fix which can be affected by the
* change in par. For this driver it doesn't do much.
*/ */
static int get_video_mode(const char *name); static int mc68x328fb_set_par(struct fb_info *info)
{
info->fix.line_length = get_line_length(info->var.xres_virtual,
info->var.bits_per_pixel);
return 0;
}
/* /*
* Set a single color register. The values supplied are already * Set a single color register. The values supplied are already
...@@ -213,237 +276,210 @@ static int get_video_mode(const char *name); ...@@ -213,237 +276,210 @@ static int get_video_mode(const char *name);
* entries in the var structure). Return != 0 for invalid regno. * entries in the var structure). Return != 0 for invalid regno.
*/ */
static int mc68328fb_setcolreg(u_int regno, u_int red, u_int green, static int mc68x328fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int blue, u_int transp) u_int transp, struct fb_info *info)
{ {
if (regno >= 256) /* no. of hw registers */
return 1; return 1;
#if 0 /*
if (regno > 255) * Program hardware... do anything you want with transp
return (1); */
/* grayscale works only partially under directcolor */
if (info->var.grayscale) {
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
red = green = blue =
(red * 77 + green * 151 + blue * 28) >> 8;
}
*(mc68328Regs + 0x3c8) = (char) regno; /* Directcolor:
mc68328_colour_table[regno][0] = red & 0xff; * var->{color}.offset contains start of bitfield
mc68328_colour_table[regno][1] = green & 0xff; * var->{color}.length contains length of bitfield
mc68328_colour_table[regno][2] = blue & 0xff; * {hardwarespecific} contains width of RAMDAC
mc68328_colour_table[regno][3] = transp; * cmap[X] is programmed to (X << red.offset) | (X << green.offset) | (X << blue.offset)
* RAMDAC[X] is programmed to (red, green, blue)
*
* Pseudocolor:
* uses offset = 0 && length = RAMDAC register width.
* var->{color}.offset is 0
* var->{color}.length contains widht of DAC
* cmap is not used
* RAMDAC[X] is programmed to (red, green, blue)
* Truecolor:
* does not use DAC. Usually 3 are present.
* var->{color}.offset contains start of bitfield
* var->{color}.length contains length of bitfield
* cmap is programmed to (red << red.offset) | (green << green.offset) |
* (blue << blue.offset) | (transp << transp.offset)
* RAMDAC does not exist
*/
#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
break;
case FB_VISUAL_DIRECTCOLOR:
red = CNVT_TOHW(red, 8); /* expect 8 bit DAC */
green = CNVT_TOHW(green, 8);
blue = CNVT_TOHW(blue, 8);
/* hey, there is bug in transp handling... */
transp = CNVT_TOHW(transp, 8);
break;
}
#undef CNVT_TOHW
/* Truecolor has hardware independent palette */
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
u32 v;
*(mc68328Regs + 0x3c9) = (red & 0xff) >> 2; if (regno >= 16)
*(mc68328Regs + 0x3c9) = (green & 0xff) >> 2; return 1;
*(mc68328Regs + 0x3c9) = (blue & 0xff) >> 2;
return (0); v = (red << info->var.red.offset) |
#endif (green << info->var.green.offset) |
(blue << info->var.blue.offset) |
(transp << info->var.transp.offset);
switch (info->var.bits_per_pixel) {
case 8:
break;
case 16:
((u32 *) (info->pseudo_palette))[regno] = v;
break;
case 24:
case 32:
((u32 *) (info->pseudo_palette))[regno] = v;
break;
}
return 0;
}
return 0;
} }
/* /*
* (Un)Blank the screen * Pan or Wrap the Display
*
* This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
*/ */
static void mc68328fb_blank(int blank, struct fb_info *info) static int mc68x328fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{ {
#if 0 if (var->vmode & FB_VMODE_YWRAP) {
if (blank) if (var->yoffset < 0
(*(volatile unsigned char *) 0xFFFFFA27) &= ~128; || var->yoffset >= info->var.yres_virtual
|| var->xoffset)
return -EINVAL;
} else {
if (var->xoffset + var->xres > info->var.xres_virtual ||
var->yoffset + var->yres > info->var.yres_virtual)
return -EINVAL;
}
info->var.xoffset = var->xoffset;
info->var.yoffset = var->yoffset;
if (var->vmode & FB_VMODE_YWRAP)
info->var.vmode |= FB_VMODE_YWRAP;
else else
(*(volatile unsigned char *) 0xFFFFFA27) |= 128; info->var.vmode &= ~FB_VMODE_YWRAP;
#endif return 0;
}
/**************************************************************
* We are waiting for "fifo" FIFO-slots empty
*/
void mc68328_WaitQueue(u_short fifo)
{
} }
/************************************************************** /*
* We are waiting for Hardware (Graphics Engine) not busy * Most drivers don't need their own mmap function
*/ */
void mc68328_WaitBlit(void)
{
}
/************************************************************** static int mc68x328fb_mmap(struct fb_info *info, struct file *file,
* BitBLT - Through the Plane struct vm_area_struct *vma)
*/
void mc68328_BitBLT(u_short curx, u_short cury, u_short destx,
u_short desty, u_short width, u_short height,
u_short mode)
{ {
#if 0 #ifndef MMU
u_short blitcmd = S3_BITBLT; /* this is uClinux (no MMU) specific code */
/* Set drawing direction */
/* -Y, X maj, -X (default) */
if (curx > destx)
blitcmd |= 0x0020; /* Drawing direction +X */
else {
curx += (width - 1);
destx += (width - 1);
}
if (cury > desty)
blitcmd |= 0x0080; /* Drawing direction +Y */
else {
cury += (height - 1);
desty += (height - 1);
}
mc68328_WaitQueue(0x8000); vma->vm_flags |= VM_RESERVED;
vma->vm_start = videomemory;
*((u_short volatile *) (mc68328Regs + S3_PIXEL_CNTL)) = 0xa000; return 0;
*((u_short volatile *) (mc68328Regs + S3_FRGD_MIX)) = #else
(0x0060 | mode); return -EINVAL;
*((u_short volatile *) (mc68328Regs + S3_CUR_X)) = curx;
*((u_short volatile *) (mc68328Regs + S3_CUR_Y)) = cury;
*((u_short volatile *) (mc68328Regs + S3_DESTX_DIASTP)) = destx;
*((u_short volatile *) (mc68328Regs + S3_DESTY_AXSTP)) = desty;
*((u_short volatile *) (mc68328Regs + S3_MIN_AXIS_PCNT)) =
height - 1;
*((u_short volatile *) (mc68328Regs + S3_MAJ_AXIS_PCNT)) =
width - 1;
*((u_short volatile *) (mc68328Regs + S3_CMD)) = blitcmd;
#endif #endif
} }
/************************************************************** int __init mc68x328fb_setup(char *options)
* Rectangle Fill Solid
*/
void mc68328_RectFill(u_short x, u_short y, u_short width, u_short height,
u_short mode, u_short color)
{ {
#if 0 #if 0
u_short blitcmd = S3_FILLEDRECT; char *this_opt;
mc68328_WaitQueue(0x8000);
*((u_short volatile *) (mc68328Regs + S3_PIXEL_CNTL)) = 0xa000;
*((u_short volatile *) (mc68328Regs + S3_FRGD_MIX)) =
(0x0020 | mode);
*((u_short volatile *) (mc68328Regs + S3_MULT_MISC)) = 0xe000;
*((u_short volatile *) (mc68328Regs + S3_FRGD_COLOR)) = color;
*((u_short volatile *) (mc68328Regs + S3_CUR_X)) = x;
*((u_short volatile *) (mc68328Regs + S3_CUR_Y)) = y;
*((u_short volatile *) (mc68328Regs + S3_MIN_AXIS_PCNT)) =
height - 1;
*((u_short volatile *) (mc68328Regs + S3_MAJ_AXIS_PCNT)) =
width - 1;
*((u_short volatile *) (mc68328Regs + S3_CMD)) = blitcmd;
#endif #endif
}
/************************************************************** if (!options || !*options)
* Move cursor to x, y return 1;
*/
void mc68328_MoveCursor(u_short x, u_short y)
{
(*(volatile unsigned short *) 0xFFFFFA18) =
(mc68328fbCursorMode << 14) | x;
(*(volatile unsigned short *) 0xFFFFFA1A) = y;
#if 0 #if 0
*(mc68328Regs + S3_CRTC_ADR) = 0x39; while ((this_opt = strsep(&options, ",")) != NULL) {
*(mc68328Regs + S3_CRTC_DATA) = 0xa0; if (!*this_opt)
continue;
*(mc68328Regs + S3_CRTC_ADR) = S3_HWGC_ORGX_H; if (!strncmp(this_opt, "disable", 7))
*(mc68328Regs + S3_CRTC_DATA) = (char) ((x & 0x0700) >> 8); mc68x328fb_enable = 0;
*(mc68328Regs + S3_CRTC_ADR) = S3_HWGC_ORGX_L; }
*(mc68328Regs + S3_CRTC_DATA) = (char) (x & 0x00ff);
*(mc68328Regs + S3_CRTC_ADR) = S3_HWGC_ORGY_H;
*(mc68328Regs + S3_CRTC_DATA) = (char) ((y & 0x0700) >> 8);
*(mc68328Regs + S3_CRTC_ADR) = S3_HWGC_ORGY_L;
*(mc68328Regs + S3_CRTC_DATA) = (char) (y & 0x00ff);
#endif #endif
return 1;
} }
/* -------------------- Generic routines ------------------------------------ */
/* /*
* Default Colormaps * Initialisation
*/ */
static u_short red16[] = int __init mc68x328fb_init(void)
{ 0xc000, 0x0000, 0x0000, 0x0000, 0xc000, 0xc000, 0xc000, 0x0000,
0x8000, 0x0000, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff
};
static u_short green16[] =
{ 0xc000, 0x0000, 0xc000, 0xc000, 0x0000, 0x0000, 0xc000, 0x0000,
0x8000, 0x0000, 0xffff, 0xffff, 0x0000, 0x0000, 0xffff, 0xffff
};
static u_short blue16[] =
{ 0xc000, 0x0000, 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0x0000,
0x8000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff
};
static struct fb_cmap default_16_colors =
{ 0, 16, red16, green16, blue16, NULL };
static struct fb_cmap *get_default_colormap(int bpp)
{ {
return (&default_16_colors);
}
#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7fff-(val))>>16)
#define CNVT_FROMHW(val,width) (((width) ? ((((val)<<16)-(val)) / \
((1<<(width))-1)) : 0))
static struct fb_ops mc68328_fb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = mc68328fb_setcolreg,
.fb_fillrect = cfbfillrect,
.fb_copyarea = cfbcopyarea,
.fb_imageblit = cfbimgblt,
.fb_cursor = softcursor,
};
/* /*
* Initialization * initialize the default mode from the LCD controller registers
*/ */
mc68x328fb_default.xres = LXMAX;
mc68x328fb_default.yres = LYMAX+1;
mc68x328fb_default.xres_virtual = mc68x328fb_default.xres;
mc68x328fb_default.yres_virtual = mc68x328fb_default.yres;
mc68x328fb_default.bits_per_pixel = 1 + (LPICF & 0x01);
videomemory = LSSA;
videomemorysize = (mc68x328fb_default.xres_virtual+7) / 8 *
mc68x328fb_default.yres_virtual * mc68x328fb_default.bits_per_pixel;
fb_info.screen_base = (void *)videomemory;
fb_info.fbops = &mc68x328fb_ops;
fb_info.var = mc68x328fb_default;
fb_info.fix = mc68x328fb_fix;
fb_info.fix.smem_start = videomemory;
fb_info.fix.smem_len = videomemorysize;
fb_info.fix.line_length =
get_line_length(mc68x328fb_default.xres_virtual, mc68x328fb_default.bits_per_pixel);
fb_info.fix.visual = (mc68x328fb_default.bits_per_pixel) == 1 ?
MC68X328FB_MONO_VISUAL : FB_VISUAL_PSEUDOCOLOR;
fb_info.pseudo_palette = &mc68x328fb_pseudo_palette;
fb_info.flags = FBINFO_FLAG_DEFAULT;
fb_alloc_cmap(&fb_info.cmap, 256, 0);
if (register_framebuffer(&fb_info) < 0) {
return -EINVAL;
}
int __init mc68328_fb_init(void) printk(KERN_INFO
{ "fb%d: %s frame buffer device\n", fb_info.node, fb_info.fix.id);
if (mc68328fb_mode == -1) printk(KERN_INFO
mc68328fb_mode = PALM_DEFMODE; "fb%d: %dx%dx%d at 0x%08lx\n", fb_info.node,
mc68328_fix.smem_start = (*(volatile unsigned long *) 0xFFFFFA00); mc68x328fb_default.xres_virtual, mc68x328fb_default.yres_virtual,
/*kernel_map (board_addr + 0x01400000, 0x00400000, */ 1 << mc68x328fb_default.bits_per_pixel, videomemory);
info->var = mc68328_fb_predefined[mc68328fb_mode];
if (info->var.bits_per_pixel == 1)
fix->visual = FB_VISUAL_MONO01;
else
fix->visual = FB_VISUAL_DIRECTCOLOR;
info->screen_base = (u_char *) mc68328_fix.smem_start;
if (register_framebuffer(&fb_info) < 0)
panic("Cannot register frame buffer\n");
return 0; return 0;
} }
/* #ifdef MODULE
* Get a Video Mode
*/
static int get_video_mode(const char *name) static void __exit mc68x328fb_cleanup(void)
{ {
int i; unregister_framebuffer(&fb_info);
for (i = 1; i < NUM_PREDEF_MODES; i++)
if (!strcmp(name, mc68328_fb_modenames[i]))
return (i);
return (0);
} }
module_init(mc68x328fb_init);
module_exit(mc68x328fb_cleanup);
MODULE_LICENSE("GPL");
#endif /* MODULE */
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