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-/*
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- * PicoDrive
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- * (C) notaz, 2006-2009
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- *
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- * This work is licensed under the terms of MAME license.
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- * See COPYING file in the top-level directory.
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- */
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-#include <stdio.h>
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-#include <stdlib.h>
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-#include <string.h>
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-#include <math.h>
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-#include <sys/types.h>
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-#include <sys/stat.h>
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-#include <fcntl.h>
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-#include <sys/mman.h>
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-#include <unistd.h>
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-
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-#include "soc.h"
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-#include "soc_mmsp2.h"
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-#include "plat_gp2x.h"
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-#include "../common/emu.h"
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-#include "../common/plat.h"
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-#include "../common/arm_utils.h"
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-#include "940ctl.h"
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-
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-volatile unsigned short *gp2x_memregs;
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-volatile unsigned long *gp2x_memregl;
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-extern void *gp2x_screens[4];
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-static int screensel = 0;
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-
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-int memdev = -1; /* used by code940 */
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-static int touchdev = -1;
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-static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
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-
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-#define FRAMEBUFF_SIZE 0x30000
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-#define FRAMEBUFF_WHOLESIZE (FRAMEBUFF_SIZE*4) // 320*240*2 + some more
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-#define FRAMEBUFF_ADDR0 (0x4000000 - FRAMEBUFF_WHOLESIZE)
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-#define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0 + FRAMEBUFF_SIZE)
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-#define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1 + FRAMEBUFF_SIZE)
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-#define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2 + FRAMEBUFF_SIZE)
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-
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-static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };
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-static int gp2x_screenaddrs_use[4];
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-
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-static char gamma_was_changed = 0;
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-static char cpuclk_was_changed = 0;
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-static unsigned short gp2x_screenaddr_old[4];
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-static unsigned short memtimex_old[2];
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-static unsigned short reg0910;
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-
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-/* video stuff */
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-static void gp2x_video_flip_(void)
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-{
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- unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];
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- unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);
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-
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- gp2x_memregs[0x2910>>1] = msw;
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- gp2x_memregs[0x2914>>1] = msw;
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- gp2x_memregs[0x290E>>1] = lsw;
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- gp2x_memregs[0x2912>>1] = lsw;
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-
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- // jump to other buffer:
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- g_screen_ptr = gp2x_screens[++screensel&3];
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-}
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-
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-/* doulblebuffered flip */
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-static void gp2x_video_flip2_(void)
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-{
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- unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);
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-
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- gp2x_memregs[0x2910>>1] = msw;
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- gp2x_memregs[0x2914>>1] = msw;
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- gp2x_memregs[0x290E>>1] = 0;
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- gp2x_memregs[0x2912>>1] = 0;
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-
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- // jump to other buffer:
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- g_screen_ptr = gp2x_screens[++screensel&1];
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-}
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-
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-static void gp2x_video_changemode_ll_(int bpp)
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-{
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- gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/
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- gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/
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-}
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-
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-static void gp2x_video_setpalette_(int *pal, int len)
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-{
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- unsigned short *g = (unsigned short *)pal;
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- volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];
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-
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- gp2x_memregs[0x2958>>1] = 0;
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-
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- len *= 2;
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- while (len--)
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- *memreg = *g++;
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-}
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-
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-static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
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-{
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- float escalaw, escalah;
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- int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;
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- unsigned short scalw;
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-
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- // set offset
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- gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;
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- gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;
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- gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;
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- gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;
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-
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- escalaw = 1024.0; // RGB Horiz LCD
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- escalah = 320.0; // RGB Vert LCD
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-
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- if (gp2x_memregs[0x2800>>1]&0x100) //TV-Out
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- {
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- escalaw=489.0; // RGB Horiz TV (PAL, NTSC)
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- if (gp2x_memregs[0x2818>>1] == 287) //PAL
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- escalah=274.0; // RGB Vert TV PAL
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- else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
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- escalah=331.0; // RGB Vert TV NTSC
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- }
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-
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- // scale horizontal
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- scalw = (unsigned short)((float)escalaw *(W/320.0));
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- /* if there is no horizontal scaling, vertical doesn't work.
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- * Here is a nasty wrokaround... */
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- if (H != 240 && W == 320) scalw--;
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- gp2x_memregs[0x2906>>1]=scalw;
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- // scale vertical
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- gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
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-}
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-
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-static void gp2x_video_wait_vsync_(void)
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-{
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- unsigned short v = gp2x_memregs[0x1182>>1];
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- while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10))
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- spend_cycles(1024);
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-}
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-
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-/* 940 */
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-void pause940(int yes)
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-{
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- if (yes)
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- gp2x_memregs[0x0904>>1] &= 0xFFFE;
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- else
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- gp2x_memregs[0x0904>>1] |= 1;
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-}
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-
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-void reset940(int yes, int bank)
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-{
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- gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
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-}
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-
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-/*
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- * CPU clock
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- * Fout = (m * Fin) / (p * 2^s)
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- * m = MDIV+8, p = PDIV+2, s = SDIV
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- *
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- * m = (Fout * p * 2^s) / Fin
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- */
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-
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-#define SYS_CLK_FREQ 7372800
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-
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-static void gp2x_set_cpuclk_(unsigned int mhz)
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-{
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- unsigned int mdiv, pdiv, sdiv = 0;
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- unsigned int v;
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- int i;
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-
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- pdiv = 3;
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- mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ;
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- if (mdiv & ~0xff) {
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- fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz);
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- return;
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- }
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- v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv;
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- gp2x_memregs[0x910>>1] = v;
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-
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- for (i = 0; i < 10000; i++)
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- if (!(gp2x_memregs[0x902>>1] & 1))
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- break;
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-
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- cpuclk_was_changed = 1;
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-}
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-
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-/* RAM timings */
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-#define TIMING_CHECK(t, adj, mask) \
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- t += adj; \
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- if (t & ~mask) \
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- goto bad
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-
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-static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
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-{
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- int i;
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- TIMING_CHECK(tCAS, -2, 0x1);
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- TIMING_CHECK(tRC, -1, 0xf);
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- TIMING_CHECK(tRAS, -1, 0xf);
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- TIMING_CHECK(tWR, -1, 0xf);
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- TIMING_CHECK(tMRD, -1, 0xf);
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- TIMING_CHECK(tRFC, -1, 0xf);
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- TIMING_CHECK(tRP, -1, 0xf);
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- TIMING_CHECK(tRCD, -1, 0xf);
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-
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- /* get spend_cycles() into cache */
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- spend_cycles(1);
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-
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- gp2x_memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF);
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- gp2x_memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF);
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-
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- /* be sure we don't access the mem while it's being reprogrammed */
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- spend_cycles(128*1024);
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- for (i = 0; i < 8*1024; i++)
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- if (!(gp2x_memregs[0x3804>>1] & 0x8000))
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- break;
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-
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- printf("RAM timings set.\n");
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- return;
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-bad:
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- fprintf(stderr, "RAM timings invalid.\n");
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-}
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-
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-static void set_ram_timings_(void)
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-{
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- /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */
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- set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2);
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-}
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-
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-static void unset_ram_timings_(void)
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-{
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- gp2x_memregs[0x3802>>1] = memtimex_old[0];
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- gp2x_memregs[0x3804>>1] = memtimex_old[1] | 0x8000;
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- printf("RAM timings reset to startup values.\n");
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-}
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-
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-/* LCD refresh */
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-typedef struct
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-{
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- unsigned short reg, valmask, val;
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-}
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-reg_setting;
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-
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-/* 120.00 97/0/2/7|25/ 7/ 7/11/37 */
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-static const reg_setting lcd_rate_120[] =
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-{
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- { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */
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- { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
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- { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */
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- { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */
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- { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */
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- { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */
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- { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
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- { 0, 0, 0 }
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-};
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-
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-/* 100.00 96/0/2/7|29/25/53/15/37 */
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-static const reg_setting lcd_rate_100[] =
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-{
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- { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */
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- { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
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- { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */
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- { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */
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- { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */
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- { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */
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- { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
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- { 0, 0, 0 }
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-};
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-
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-static reg_setting lcd_rate_defaults[] =
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-{
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- { 0x0914, 0xffff, 0 },
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- { 0x0924, 0xff00, 0 },
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- { 0x281A, 0x00ff, 0 },
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- { 0x281C, 0x00ff, 0 },
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- { 0x281E, 0x00ff, 0 },
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- { 0x2822, 0x01ff, 0 },
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- { 0x2826, 0x0ff0, 0 },
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- { 0, 0, 0 }
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-};
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-
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-static void get_reg_setting(reg_setting *set)
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-{
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- for (; set->reg; set++)
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- {
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- unsigned short val = gp2x_memregs[set->reg >> 1];
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- val &= set->valmask;
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- set->val = val;
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- }
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-}
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-
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-static void set_reg_setting(const reg_setting *set)
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-{
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- for (; set->reg; set++)
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- {
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- unsigned short val = gp2x_memregs[set->reg >> 1];
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- val &= ~set->valmask;
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- val |= set->val;
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- gp2x_memregs[set->reg >> 1] = val;
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- }
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-}
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-
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-static void set_lcd_custom_rate_(int is_pal)
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-{
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- if (gp2x_memregs[0x2800>>1] & 0x100) // tv-out
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- return;
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-
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- printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120);
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- fflush(stdout);
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-
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- set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120);
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- printf("done.\n");
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-}
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-
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-static void unset_lcd_custom_rate_(void)
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-{
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- printf("reset to prev LCD refresh.\n");
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- set_reg_setting(lcd_rate_defaults);
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-}
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-
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-static void set_lcd_gamma_(int g100, int A_SNs_curve)
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-{
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- float gamma = (float) g100 / 100;
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- int i;
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- gamma = 1 / gamma;
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-
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- /* enable gamma */
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- gp2x_memregs[0x2880>>1] &= ~(1<<12);
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-
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- gp2x_memregs[0x295C>>1] = 0;
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- for (i = 0; i < 256; i++)
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- {
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- unsigned char g;
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- unsigned short s;
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- const unsigned short grey50=143, grey75=177, grey25=97;
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- double blah;
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-
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- if (A_SNs_curve)
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- {
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- // The next formula is all about gaussian interpolation
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- blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) +
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- ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) +
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- (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) +
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- (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) +
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- (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) +
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- ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) +
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- ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) +
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- ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637;
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- blah += 0.5;
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- }
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- else
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- {
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- blah = i;
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- }
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-
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- g = (unsigned char)(255.0 * pow(blah/255.0, gamma));
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- //printf("%d : %d\n", i, g);
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- s = (g<<8) | g;
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- gp2x_memregs[0x295E>>1]= s;
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- gp2x_memregs[0x295E>>1]= g;
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- }
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-
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- gamma_was_changed = 1;
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-}
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-
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-static int gp2x_read_battery_(void)
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-{
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- return -1; /* TODO? */
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-}
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-
|
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-/* these are not quite MMSP2 related,
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- * more to GP2X F100/F200 consoles themselves. */
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-typedef struct ucb1x00_ts_event
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-{
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- unsigned short pressure;
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- unsigned short x;
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- unsigned short y;
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- unsigned short pad;
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- struct timeval stamp;
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-} UCB1X00_TS_EVENT;
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-
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-int gp2x_touchpad_read(int *x, int *y)
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-{
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- UCB1X00_TS_EVENT event;
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- static int zero_seen = 0;
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- int retval;
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-
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- if (touchdev < 0) return -1;
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-
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- retval = read(touchdev, &event, sizeof(event));
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- if (retval <= 0) {
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- perror("touch read failed");
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- return -1;
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- }
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- // this is to ignore the messed-up 4.1.x driver
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- if (event.pressure == 0) zero_seen = 1;
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-
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- if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
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- if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
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- // printf("read %i %i %i\n", event.pressure, *x, *y);
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-
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- return zero_seen ? event.pressure : 0;
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-}
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-
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-static void proc_set(const char *path, const char *val)
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-{
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- FILE *f;
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- char tmp[16];
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-
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- f = fopen(path, "w");
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- if (f == NULL) {
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- printf("failed to open: %s\n", path);
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- return;
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- }
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-
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- fprintf(f, "0\n");
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- fclose(f);
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-
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- printf("\"%s\" is set to: ", path);
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- f = fopen(path, "r");
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- if (f == NULL) {
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- printf("(open failed)\n");
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- return;
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- }
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-
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- fgets(tmp, sizeof(tmp), f);
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- printf("%s", tmp);
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- fclose(f);
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|
-}
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-
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-
|
|
|
-void mmsp2_init(void)
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-{
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- int i;
|
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-
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- memdev = open("/dev/mem", O_RDWR);
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- if (memdev == -1)
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|
- {
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|
|
- perror("open(\"/dev/mem\")");
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|
- exit(1);
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|
|
- }
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|
|
-
|
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- gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
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|
|
- if (gp2x_memregs == MAP_FAILED)
|
|
|
- {
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|
|
- perror("mmap(memregs)");
|
|
|
- exit(1);
|
|
|
- }
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|
|
- gp2x_memregl = (unsigned long *) gp2x_memregs;
|
|
|
-
|
|
|
- gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers
|
|
|
-
|
|
|
- gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED,
|
|
|
- memdev, gp2x_screenaddrs[0]);
|
|
|
- if (gp2x_screens[0] == MAP_FAILED)
|
|
|
- {
|
|
|
- perror("mmap(g_screen_ptr)");
|
|
|
- exit(1);
|
|
|
- }
|
|
|
- printf("framebuffers:\n");
|
|
|
- printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]);
|
|
|
- for (i = 1; i < 4; i++)
|
|
|
- {
|
|
|
- gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE;
|
|
|
- printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]);
|
|
|
- }
|
|
|
-
|
|
|
- g_screen_ptr = gp2x_screens[0];
|
|
|
- screensel = 0;
|
|
|
-
|
|
|
- gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];
|
|
|
- gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];
|
|
|
- gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
|
|
|
- gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
|
|
|
-
|
|
|
- memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));
|
|
|
-
|
|
|
- /* save startup values: LCD refresh */
|
|
|
- get_reg_setting(lcd_rate_defaults);
|
|
|
-
|
|
|
- /* CPU and RAM timings */
|
|
|
- reg0910 = gp2x_memregs[0x0910>>1];
|
|
|
- memtimex_old[0] = gp2x_memregs[0x3802>>1];
|
|
|
- memtimex_old[1] = gp2x_memregs[0x3804>>1];
|
|
|
-
|
|
|
- /* touchscreen */
|
|
|
- touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
|
|
|
- if (touchdev >= 0) {
|
|
|
- FILE *pcf = fopen("/etc/pointercal", "r");
|
|
|
- if (pcf) {
|
|
|
- fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
|
|
|
- &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
|
|
|
- fclose(pcf);
|
|
|
- }
|
|
|
- printf("found touchscreen/wm97xx\n");
|
|
|
- }
|
|
|
-
|
|
|
- /* disable Linux read-ahead */
|
|
|
- proc_set("/proc/sys/vm/max-readahead", "0\n");
|
|
|
- proc_set("/proc/sys/vm/min-readahead", "0\n");
|
|
|
-
|
|
|
- /* code940 portion */
|
|
|
- sharedmem940_init();
|
|
|
-
|
|
|
- gp2x_video_flip = gp2x_video_flip_;
|
|
|
- gp2x_video_flip2 = gp2x_video_flip2_;
|
|
|
- gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
|
|
|
- gp2x_video_setpalette = gp2x_video_setpalette_;
|
|
|
- gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
|
|
|
- gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
|
|
|
-
|
|
|
- gp2x_set_cpuclk = gp2x_set_cpuclk_;
|
|
|
-
|
|
|
- set_lcd_custom_rate = set_lcd_custom_rate_;
|
|
|
- unset_lcd_custom_rate = unset_lcd_custom_rate_;
|
|
|
- set_lcd_gamma = set_lcd_gamma_;
|
|
|
-
|
|
|
- set_ram_timings = set_ram_timings_;
|
|
|
- unset_ram_timings = unset_ram_timings_;
|
|
|
- gp2x_read_battery = gp2x_read_battery_;
|
|
|
-
|
|
|
- gp2x_get_ticks_ms = plat_get_ticks_ms_good;
|
|
|
- gp2x_get_ticks_us = plat_get_ticks_us_good;
|
|
|
-}
|
|
|
-
|
|
|
-void mmsp2_finish(void)
|
|
|
-{
|
|
|
- reset940(1, 3);
|
|
|
- pause940(1);
|
|
|
- sharedmem940_finish();
|
|
|
-
|
|
|
- gp2x_video_RGB_setscaling_(0, 320, 240);
|
|
|
- gp2x_video_changemode_ll_(16);
|
|
|
-
|
|
|
- gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];
|
|
|
- gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];
|
|
|
- gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];
|
|
|
- gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];
|
|
|
-
|
|
|
- unset_lcd_custom_rate_();
|
|
|
- if (gamma_was_changed)
|
|
|
- set_lcd_gamma_(100, 0);
|
|
|
- unset_ram_timings_();
|
|
|
- if (cpuclk_was_changed)
|
|
|
- gp2x_memregs[0x910>>1] = reg0910;
|
|
|
-
|
|
|
- munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);
|
|
|
- munmap((void *)gp2x_memregs, 0x10000);
|
|
|
- close(memdev);
|
|
|
- if (touchdev >= 0)
|
|
|
- close(touchdev);
|
|
|
-}
|
|
|
-
|