455 lines
9.4 KiB
C
455 lines
9.4 KiB
C
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#include "pxa255_LCD.h"
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#include "mem.h"
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#define LCD_IMAGE "LCD.bmp"
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#define UNMASKABLE_INTS 0x7C8E
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static void pxa255lcdPrvUpdateInts(Pxa255lcd* lcd){
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UInt16 ints = lcd->lcsr & lcd->intMask;
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if((ints && !lcd->intWasPending) || (!ints && lcd->intWasPending)){
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lcd->intWasPending = !!ints;
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pxa255icInt(lcd->ic, PXA255_I_LCD, !!ints);
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}
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}
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static Boolean pxa255lcdPrvMemAccessF(void* userData, UInt32 pa, UInt8 size, Boolean write, void* buf){
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Pxa255lcd* lcd = userData;
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UInt32 val = 0;
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UInt16 v16;
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if(size != 4) {
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err_str(__FILE__ ": Unexpected ");
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// err_str(write ? "write" : "read");
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// err_str(" of ");
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// err_dec(size);
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// err_str(" bytes to 0x");
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// err_hex(pa);
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// err_str("\r\n");
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return true; //we do not support non-word accesses
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}
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pa = (pa - PXA255_LCD_BASE) >> 2;
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if(write){
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val = *(UInt32*)buf;
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switch(pa){
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case 0:
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if((lcd->lccr0 ^ val) & 0x0001){ //something changed about enablement - handle it
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lcd->enbChanged = 1;
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}
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lcd->lccr0 = val;
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//recalc intMask
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v16 = UNMASKABLE_INTS;
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if(val & 0x00200000UL){ //output fifo underrun
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v16 |= 0x0040;
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}
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if(val & 0x00100000UL){ //branch int
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v16 |= 0x0200;
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}
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if(val & 0x00000400UL){ //quick disable
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v16 |= 0x0001;
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}
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if(val & 0x00000040UL){ //end of frame
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v16 |= 0x0080;
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}
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if(val & 0x00000020UL){ //input fifo underrun
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v16 |= 0x0030;
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}
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if(val & 0x00000010UL){ //start of frame
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v16 |= 0x0002;
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}
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lcd->intMask = v16;
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pxa255lcdPrvUpdateInts(lcd);
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break;
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case 1:
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lcd->lccr1 = val;
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break;
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case 2:
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lcd->lccr2 = val;
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break;
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case 3:
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lcd->lccr3 = val;
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break;
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case 8:
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lcd->fbr0 = val;
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break;
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case 9:
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lcd->fbr1 = val;
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break;
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case 14:
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lcd->lcsr &=~ val;
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pxa255lcdPrvUpdateInts(lcd);
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break;
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case 15:
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lcd->liicr = val;
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break;
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case 16:
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lcd->trgbr = val;
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break;
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case 17:
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lcd->tcr = val;
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break;
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case 128:
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lcd->fdadr0 = val;
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break;
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case 132:
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lcd->fdadr1 = val;
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break;
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}
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}
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else{
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switch(pa){
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case 0:
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val = lcd->lccr0;
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break;
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case 1:
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val = lcd->lccr1;
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break;
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case 2:
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val = lcd->lccr2;
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break;
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case 3:
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val = lcd->lccr3;
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break;
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case 8:
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val = lcd->fbr0;
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break;
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case 9:
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val = lcd->fbr1;
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break;
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case 14:
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val = lcd->lcsr;
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break;
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case 15:
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val = lcd->liicr;
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break;
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case 16:
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val = lcd->trgbr;
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break;
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case 17:
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val = lcd->tcr;
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break;
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case 128:
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val = lcd->fdadr0;
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break;
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case 129:
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val = lcd->fsadr0;
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break;
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case 130:
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val = lcd->fidr0;
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break;
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case 131:
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val = lcd->ldcmd0;
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break;
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case 132:
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val = lcd->fdadr1;
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break;
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case 133:
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val = lcd->fsadr1;
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break;
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case 134:
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val = lcd->fidr1;
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break;
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case 135:
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val = lcd->ldcmd1;
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break;
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}
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*(UInt32*)buf = val;
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}
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return true;
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}
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static UInt32 pxa255PrvGetWord(Pxa255lcd* lcd, UInt32 addr){
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UInt32 v;
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if(!memAccess(lcd->mem, addr, 4, false, &v)) return 0;
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return v;
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}
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static void pxa255LcdPrvDma(Pxa255lcd* lcd, void* dest, UInt32 addr, UInt32 len){
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UInt32 t;
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UInt8* d = dest;
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//we assume aligntment here both on part of dest and of addr
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while(len){
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t = pxa255PrvGetWord(lcd, addr);
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if(len--) *d++ = t;
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if(len--) *d++ = t >> 8;
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if(len--) *d++ = t >> 16;
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if(len--) *d++ = t >> 24;
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addr += 4;
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}
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}
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#ifndef EMBEDDED
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#include <stdio.h>
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static _INLINE_ void pxa255LcdScreenDataPixel(Pxa255lcd* lcd, UInt8* buf){
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UInt8 r, g, b;
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const UInt32 W = 640;
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const UInt32 H = 480;
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b = buf[0] << 3;
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r = buf[1] & 0xF8;
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g = (buf[1] << 5) | ((buf[0] >> 3) & 0x1C);
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{
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static UInt32 pn = 0;
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static FILE* bmp = NULL;
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if(pn == 0){
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bmp = fopen(LCD_IMAGE, "w+b");
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if(bmp){
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const UInt32 off = 56;
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const UInt32 sz = 320 * 320 * 3 + off;
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#define LE32(x) ((int)((x) & 0xFF)), ((int)(((x) >> 8) & 0xFF)), ((int)(((x) >> 16) & 0xFF)), ((int)((x) >> 24))
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#define LE16(x) ((int)((x) & 0xFF)), ((int)(((x) >> 8) & 0xFF))
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fprintf(bmp, "BM%c%c%c%c%c%c%c%c%c%c%c%c", LE32(sz), LE16(0), LE16(0), LE32(off)); //bitmap file header
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fprintf(bmp, "%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c", LE32(40), LE32(W), LE32(-H), LE16(1), LE16(24), LE32(0), LE32(W * H * 3), LE32(2835), LE32(2835), LE32(0), LE32(0)); //BITMAPCOREHEADER
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fprintf(bmp, "%c%c",0 ,0); //spacer to align bmp data to 4 bytes
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#undef LE32
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}
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}
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if(bmp){
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fprintf(bmp, "%c%c%c", b, g, r);
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}
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pn++;
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if(pn == W * H){
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pn = 0;
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if(bmp){
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fclose(bmp);
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bmp = NULL;
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}
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}
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}
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}
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#ifndef PXA255_LCD_SUPPORTS_PALLETES
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static void pxa255LcdSetFakePal(UInt8* buf, UInt8 bpp, UInt8 val){
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while(bpp++ < 8) val = (val << 1) | (val & 1); //sign extend up (weird but works)
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buf[1] = (val & 0xF8) | (val >> 3);
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buf[0] = ((val & 0xFC) << 5) | val >> 3;
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}
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#endif
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static void pxa255LcdScreenDataDma(Pxa255lcd* lcd, UInt32 addr/*PA*/, UInt32 len){
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UInt8 data[4];
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UInt32 i, j;
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void* ptr;
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#ifndef PXA255_LCD_SUPPORTS_PALLETES
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UInt8 val[2];
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#endif
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len /= 4;
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while(len--){
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pxa255LcdPrvDma(lcd, data, addr, 4);
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addr += 4;
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switch((lcd->lccr3 >> 24) & 7){
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case 0: //1BPP
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#ifdef PXA255_LCD_SUPPORTS_PALLETES
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ptr = lcd->palette + ((data[i] >> j) & 1) * 2;
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#else
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ptr = val;
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pxa255LcdSetFakePal(val, 1, (data[i] >> j) & 1);
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#endif
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for(i = 0; i < 4; i += 1) for(j = 0; j < 8; j += 1) pxa255LcdScreenDataPixel(lcd, ptr);
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break;
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case 1: //2BPP
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#ifdef PXA255_LCD_SUPPORTS_PALLETES
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ptr = lcd->palette + ((data[i] >> j) & 3) * 2;
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#else
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ptr = val;
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pxa255LcdSetFakePal(val, 2, (data[i] >> j) & 3);
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#endif
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for(i = 0; i < 4; i += 1) for(j = 0; j < 8; j += 2) pxa255LcdScreenDataPixel(lcd, ptr);
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break;
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case 2: //4BPP
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#ifdef PXA255_LCD_SUPPORTS_PALLETES
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ptr = lcd->palette + ((data[i] >> j) & 15) * 2;
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#else
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ptr = val;
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pxa255LcdSetFakePal(val, 4, (data[i] >> j) & 15);
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#endif
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for(i = 0; i < 4; i += 1) for(j = 0; j < 8; j += 4) pxa255LcdScreenDataPixel(lcd, ptr);
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break;
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case 3: //8BPP
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#ifdef PXA255_LCD_SUPPORTS_PALLETES
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ptr = lcd->palette + (data[i] * 2);
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#else
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ptr = val;
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pxa255LcdSetFakePal(val, 8, data[i]);
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#endif
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for(i = 0; i < 4; i += 1) pxa255LcdScreenDataPixel(lcd, ptr);
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break;
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case 4: //16BPP
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for(i = 0; i < 4; i +=2 ) pxa255LcdScreenDataPixel(lcd, data + i);
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break;
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default:
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;//BAD
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}
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}
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}
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#else
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static void pxa255LcdScreenDataDma(Pxa255lcd* lcd, UInt32 addr/*PA*/, UInt32 len){
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//nothing
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}
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#endif
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void pxa255lcdFrame(Pxa255lcd* lcd){
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//every other call starts a frame, the others end one [this generates spacing between interrupts so as to not confuse guest OS]
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if(lcd->enbChanged){
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if(lcd->lccr0 & 0x0001){ //just got enabled
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//TODO: perhaps check settings?
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}
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else{ // we just got quick disabled - kill current frame and do no more
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lcd->lcsr |= 0x0080; //quick disable happened
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lcd->state = LCD_STATE_IDLE;
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}
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lcd->enbChanged = false;
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}
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if(lcd->lccr0 & 0x0001){ //enabled - do a frame
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UInt32 descrAddr, len;
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switch(lcd->state){
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case LCD_STATE_IDLE:
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if(lcd->fbr0 & 1){ //branch
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lcd->fbr0 &=~ 1UL;
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if(lcd->fbr0 & 2) lcd->lcsr |= 0x0200;
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descrAddr = lcd->fbr0 &~ 0xFUL;
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} else descrAddr = lcd->fdadr0;
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lcd->fdadr0 = pxa255PrvGetWord(lcd, descrAddr + 0);
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|
lcd->fsadr0 = pxa255PrvGetWord(lcd, descrAddr + 4);
|
||
|
|
lcd->fidr0 = pxa255PrvGetWord(lcd, descrAddr + 8);
|
||
|
|
lcd->ldcmd0 = pxa255PrvGetWord(lcd, descrAddr + 12);
|
||
|
|
|
||
|
|
lcd->state = LCD_STATE_DMA_0_START;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case LCD_STATE_DMA_0_START:
|
||
|
|
|
||
|
|
if(lcd->ldcmd0 & 0x00400000UL) lcd->lcsr |= 0x0002; //set SOF is DMA 0 started
|
||
|
|
len = lcd->ldcmd0 & 0x000FFFFFUL;
|
||
|
|
|
||
|
|
if(lcd->ldcmd0 & 0x04000000UL){ //pallette data
|
||
|
|
|
||
|
|
#ifdef PXA255_LCD_SUPPORTS_PALLETES
|
||
|
|
if(len > sizeof(lcd->palette)){
|
||
|
|
|
||
|
|
len = sizeof(lcd->palette);
|
||
|
|
|
||
|
|
pxa255LcdPrvDma(lcd, lcd->palette, lcd->fsadr0, len);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
|
||
|
|
lcd->frameNum++;
|
||
|
|
if(!(lcd->frameNum & 63)) pxa255LcdScreenDataDma(lcd, lcd->fsadr0, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
lcd->state = LCD_STATE_DMA_0_END;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case LCD_STATE_DMA_0_END:
|
||
|
|
|
||
|
|
if(lcd->ldcmd0 & 0x00200000UL) lcd->lcsr |= 0x0100; //set EOF is DMA 0 finished
|
||
|
|
lcd->state = LCD_STATE_IDLE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
pxa255lcdPrvUpdateInts(lcd);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Boolean pxa255lcdInit(Pxa255lcd* lcd, ArmMem* physMem, Pxa255ic* ic){
|
||
|
|
|
||
|
|
|
||
|
|
__mem_zero(lcd, sizeof(Pxa255lcd));
|
||
|
|
|
||
|
|
lcd->ic = ic;
|
||
|
|
lcd->mem = physMem;
|
||
|
|
lcd->intMask = UNMASKABLE_INTS;
|
||
|
|
|
||
|
|
return memRegionAdd(physMem, PXA255_LCD_BASE, PXA255_LCD_SIZE, pxa255lcdPrvMemAccessF, lcd);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|