X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Fsoc_mmsp2.c;h=ee933d46a660a42663ba23a77f12a624ad7cf93e;hb=20b143089cc395dbcd51cac516a9e36f4ab6f5ac;hp=86e3ac871b65a29d43dc7a6bb1827b87b596ecdd;hpb=d572cbad9886a04f8c51edb825dc6aaec9b02e23;p=libpicofe.git diff --git a/gp2x/soc_mmsp2.c b/gp2x/soc_mmsp2.c index 86e3ac8..ee933d4 100644 --- a/gp2x/soc_mmsp2.c +++ b/gp2x/soc_mmsp2.c @@ -1,6 +1,18 @@ +/* + * (C) Gražvydas "notaz" Ignotas, 2006-2012 + * + * This work is licensed under the terms of any of these licenses + * (at your option): + * - GNU GPL, version 2 or later. + * - GNU LGPL, version 2.1 or later. + * - MAME license. + * See the COPYING file in the top-level directory. + */ + #include #include #include +#include #include #include #include @@ -9,16 +21,18 @@ #include "soc.h" #include "soc_mmsp2.h" -#include "gp2x.h" -#include "../common/emu.h" -#include "../common/arm_utils.h" +#include "plat_gp2x.h" +#include "../emu.h" +#include "../plat.h" +#include "../arm_utils.h" +#include "940ctl.h" volatile unsigned short *gp2x_memregs; volatile unsigned long *gp2x_memregl; extern void *gp2x_screens[4]; static int screensel = 0; -int memdev = 0; /* used by code940 */ +int memdev = -1; /* used by code940 */ static int touchdev = -1; static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; @@ -31,11 +45,15 @@ static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 }; static int gp2x_screenaddrs_use[4]; -static unsigned short gp2x_screenaddr_old[4]; +static char gamma_was_changed = 0; +static char cpuclk_was_changed = 0; +static unsigned short gp2x_screenaddr_old[4]; +static unsigned short memtimex_old[2]; +static unsigned short reg0910; /* video stuff */ -void gp2x_video_flip(void) +static void gp2x_video_flip_(void) { unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3]; unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16); @@ -50,7 +68,7 @@ void gp2x_video_flip(void) } /* doulblebuffered flip */ -void gp2x_video_flip2(void) +static void gp2x_video_flip2_(void) { unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16); @@ -63,13 +81,13 @@ void gp2x_video_flip2(void) g_screen_ptr = gp2x_screens[++screensel&1]; } -void gp2x_video_changemode_ll(int bpp) +static void gp2x_video_changemode_ll_(int bpp) { gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/ gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/ } -void gp2x_video_setpalette(int *pal, int len) +static void gp2x_video_setpalette_(int *pal, int len) { unsigned short *g = (unsigned short *)pal; volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1]; @@ -81,8 +99,7 @@ void gp2x_video_setpalette(int *pal, int len) *memreg = *g++; } -// TV Compatible function // -void gp2x_video_RGB_setscaling(int ln_offs, int W, int H) +static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H) { float escalaw, escalah; int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3; @@ -97,7 +114,7 @@ void gp2x_video_RGB_setscaling(int ln_offs, int W, int H) escalaw = 1024.0; // RGB Horiz LCD escalah = 320.0; // RGB Vert LCD - if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out + if (gp2x_memregs[0x2800>>1]&0x100) //TV-Out { escalaw=489.0; // RGB Horiz TV (PAL, NTSC) if (gp2x_memregs[0x2818>>1] == 287) //PAL @@ -108,14 +125,15 @@ void gp2x_video_RGB_setscaling(int ln_offs, int W, int H) // scale horizontal scalw = (unsigned short)((float)escalaw *(W/320.0)); - /* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */ + /* if there is no horizontal scaling, vertical doesn't work. + * Here is a nasty wrokaround... */ if (H != 240 && W == 320) scalw--; gp2x_memregs[0x2906>>1]=scalw; // scale vertical gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0)); } -void gp2x_video_wait_vsync(void) +static void gp2x_video_wait_vsync_(void) { unsigned short v = gp2x_memregs[0x1182>>1]; while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) @@ -136,6 +154,220 @@ void reset940(int yes, int bank) gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); } +/* + * CPU clock + * Fout = (m * Fin) / (p * 2^s) + * m = MDIV+8, p = PDIV+2, s = SDIV + * + * m = (Fout * p * 2^s) / Fin + */ + +#define SYS_CLK_FREQ 7372800 + +static void gp2x_set_cpuclk_(unsigned int mhz) +{ + unsigned int mdiv, pdiv, sdiv = 0; + unsigned int v; + int i; + + pdiv = 3; + mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ; + if (mdiv & ~0xff) { + fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz); + return; + } + v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv; + gp2x_memregs[0x910>>1] = v; + + for (i = 0; i < 10000; i++) + if (!(gp2x_memregs[0x902>>1] & 1)) + break; + + cpuclk_was_changed = 1; +} + +/* RAM timings */ +#define TIMING_CHECK(t, adj, mask) \ + t += adj; \ + if (t & ~mask) \ + goto bad + +static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) +{ + int i; + TIMING_CHECK(tCAS, -2, 0x1); + TIMING_CHECK(tRC, -1, 0xf); + TIMING_CHECK(tRAS, -1, 0xf); + TIMING_CHECK(tWR, -1, 0xf); + TIMING_CHECK(tMRD, -1, 0xf); + TIMING_CHECK(tRFC, -1, 0xf); + TIMING_CHECK(tRP, -1, 0xf); + TIMING_CHECK(tRCD, -1, 0xf); + + /* get spend_cycles() into cache */ + spend_cycles(1); + + gp2x_memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF); + gp2x_memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF); + + /* be sure we don't access the mem while it's being reprogrammed */ + spend_cycles(128*1024); + for (i = 0; i < 8*1024; i++) + if (!(gp2x_memregs[0x3804>>1] & 0x8000)) + break; + + printf("RAM timings set.\n"); + return; +bad: + fprintf(stderr, "RAM timings invalid.\n"); +} + +static void set_ram_timings_(void) +{ + /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */ + set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2); +} + +static void unset_ram_timings_(void) +{ + gp2x_memregs[0x3802>>1] = memtimex_old[0]; + gp2x_memregs[0x3804>>1] = memtimex_old[1] | 0x8000; + printf("RAM timings reset to startup values.\n"); +} + +/* LCD refresh */ +typedef struct +{ + unsigned short reg, valmask, val; +} +reg_setting; + +/* 120.00 97/0/2/7|25/ 7/ 7/11/37 */ +static const reg_setting lcd_rate_120[] = +{ + { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */ + { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ + { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */ + { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */ + { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */ + { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */ + { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ + { 0, 0, 0 } +}; + +/* 100.00 96/0/2/7|29/25/53/15/37 */ +static const reg_setting lcd_rate_100[] = +{ + { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */ + { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ + { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */ + { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */ + { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */ + { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */ + { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ + { 0, 0, 0 } +}; + +static reg_setting lcd_rate_defaults[] = +{ + { 0x0914, 0xffff, 0 }, + { 0x0924, 0xff00, 0 }, + { 0x281A, 0x00ff, 0 }, + { 0x281C, 0x00ff, 0 }, + { 0x281E, 0x00ff, 0 }, + { 0x2822, 0x01ff, 0 }, + { 0x2826, 0x0ff0, 0 }, + { 0, 0, 0 } +}; + +static void get_reg_setting(reg_setting *set) +{ + for (; set->reg; set++) + { + unsigned short val = gp2x_memregs[set->reg >> 1]; + val &= set->valmask; + set->val = val; + } +} + +static void set_reg_setting(const reg_setting *set) +{ + for (; set->reg; set++) + { + unsigned short val = gp2x_memregs[set->reg >> 1]; + val &= ~set->valmask; + val |= set->val; + gp2x_memregs[set->reg >> 1] = val; + } +} + +static void set_lcd_custom_rate_(int is_pal) +{ + if (gp2x_memregs[0x2800>>1] & 0x100) // tv-out + return; + + printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120); + fflush(stdout); + + set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120); + printf("done.\n"); +} + +static void unset_lcd_custom_rate_(void) +{ + printf("reset to prev LCD refresh.\n"); + set_reg_setting(lcd_rate_defaults); +} + +static void set_lcd_gamma_(int g100, int A_SNs_curve) +{ + float gamma = (float) g100 / 100; + int i; + gamma = 1 / gamma; + + /* enable gamma */ + gp2x_memregs[0x2880>>1] &= ~(1<<12); + + gp2x_memregs[0x295C>>1] = 0; + for (i = 0; i < 256; i++) + { + unsigned char g; + unsigned short s; + const unsigned short grey50=143, grey75=177, grey25=97; + double blah; + + if (A_SNs_curve) + { + // The next formula is all about gaussian interpolation + blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) + + ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) + + (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) + + (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) + + (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) + + ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) + + ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) + + ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637; + blah += 0.5; + } + else + { + blah = i; + } + + g = (unsigned char)(255.0 * pow(blah/255.0, gamma)); + //printf("%d : %d\n", i, g); + s = (g<<8) | g; + gp2x_memregs[0x295E>>1]= s; + gp2x_memregs[0x295E>>1]= g; + } + + gamma_was_changed = 1; +} + +static int gp2x_read_battery_(void) +{ + return -1; /* TODO? */ +} /* these are not quite MMSP2 related, * more to GP2X F100/F200 consoles themselves. */ @@ -244,7 +476,15 @@ void mmsp2_init(void) memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs)); - // touchscreen + /* 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"); @@ -259,18 +499,52 @@ void mmsp2_init(void) /* 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);