12 #include "soc_mmsp2.h"
13 #include "plat_gp2x.h"
14 #include "../common/emu.h"
15 #include "../common/arm_utils.h"
18 volatile unsigned short *gp2x_memregs;
19 volatile unsigned long *gp2x_memregl;
20 extern void *gp2x_screens[4];
21 static int screensel = 0;
23 int memdev = -1; /* used by code940 */
24 static int touchdev = -1;
25 static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
27 #define FRAMEBUFF_SIZE 0x30000
28 #define FRAMEBUFF_WHOLESIZE (FRAMEBUFF_SIZE*4) // 320*240*2 + some more
29 #define FRAMEBUFF_ADDR0 (0x4000000 - FRAMEBUFF_WHOLESIZE)
30 #define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0 + FRAMEBUFF_SIZE)
31 #define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1 + FRAMEBUFF_SIZE)
32 #define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2 + FRAMEBUFF_SIZE)
34 static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };
35 static int gp2x_screenaddrs_use[4];
37 static char gamma_was_changed = 0;
38 static char cpuclk_was_changed = 0;
39 static unsigned short gp2x_screenaddr_old[4];
40 static unsigned short memtimex_old[2];
41 static unsigned short reg0910;
45 static void gp2x_video_flip_(void)
47 unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];
48 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);
50 gp2x_memregs[0x2910>>1] = msw;
51 gp2x_memregs[0x2914>>1] = msw;
52 gp2x_memregs[0x290E>>1] = lsw;
53 gp2x_memregs[0x2912>>1] = lsw;
55 // jump to other buffer:
56 g_screen_ptr = gp2x_screens[++screensel&3];
59 /* doulblebuffered flip */
60 static void gp2x_video_flip2_(void)
62 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);
64 gp2x_memregs[0x2910>>1] = msw;
65 gp2x_memregs[0x2914>>1] = msw;
66 gp2x_memregs[0x290E>>1] = 0;
67 gp2x_memregs[0x2912>>1] = 0;
69 // jump to other buffer:
70 g_screen_ptr = gp2x_screens[++screensel&1];
73 static void gp2x_video_changemode_ll_(int bpp)
75 gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/
76 gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/
79 static void gp2x_video_setpalette_(int *pal, int len)
81 unsigned short *g = (unsigned short *)pal;
82 volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];
84 gp2x_memregs[0x2958>>1] = 0;
91 static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
93 float escalaw, escalah;
94 int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;
98 gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;
99 gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;
100 gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;
101 gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;
103 escalaw = 1024.0; // RGB Horiz LCD
104 escalah = 320.0; // RGB Vert LCD
106 if (gp2x_memregs[0x2800>>1]&0x100) //TV-Out
108 escalaw=489.0; // RGB Horiz TV (PAL, NTSC)
109 if (gp2x_memregs[0x2818>>1] == 287) //PAL
110 escalah=274.0; // RGB Vert TV PAL
111 else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
112 escalah=331.0; // RGB Vert TV NTSC
116 scalw = (unsigned short)((float)escalaw *(W/320.0));
117 /* if there is no horizontal scaling, vertical doesn't work.
118 * Here is a nasty wrokaround... */
119 if (H != 240 && W == 320) scalw--;
120 gp2x_memregs[0x2906>>1]=scalw;
122 gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
125 static void gp2x_video_wait_vsync_(void)
127 unsigned short v = gp2x_memregs[0x1182>>1];
128 while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10))
133 void pause940(int yes)
136 gp2x_memregs[0x0904>>1] &= 0xFFFE;
138 gp2x_memregs[0x0904>>1] |= 1;
141 void reset940(int yes, int bank)
143 gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
148 * Fout = (m * Fin) / (p * 2^s)
149 * m = MDIV+8, p = PDIV+2, s = SDIV
151 * m = (Fout * p * 2^s) / Fin
154 #define SYS_CLK_FREQ 7372800
156 static void gp2x_set_cpuclk_(unsigned int mhz)
158 unsigned int mdiv, pdiv, sdiv = 0;
163 mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ;
165 fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz);
168 v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv;
169 gp2x_memregs[0x910>>1] = v;
171 for (i = 0; i < 10000; i++)
172 if (!(gp2x_memregs[0x902>>1] & 1))
175 cpuclk_was_changed = 1;
179 #define TIMING_CHECK(t, adj, mask) \
184 static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
187 TIMING_CHECK(tCAS, -2, 0x1);
188 TIMING_CHECK(tRC, -1, 0xf);
189 TIMING_CHECK(tRAS, -1, 0xf);
190 TIMING_CHECK(tWR, -1, 0xf);
191 TIMING_CHECK(tMRD, -1, 0xf);
192 TIMING_CHECK(tRFC, -1, 0xf);
193 TIMING_CHECK(tRP, -1, 0xf);
194 TIMING_CHECK(tRCD, -1, 0xf);
196 /* get spend_cycles() into cache */
199 gp2x_memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF);
200 gp2x_memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF);
202 /* be sure we don't access the mem while it's being reprogrammed */
203 spend_cycles(128*1024);
204 for (i = 0; i < 8*1024; i++)
205 if (!(gp2x_memregs[0x3804>>1] & 0x8000))
208 printf("RAM timings set.\n");
211 fprintf(stderr, "RAM timings invalid.\n");
214 static void set_ram_timings_(void)
216 /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */
217 set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2);
220 static void unset_ram_timings_(void)
222 gp2x_memregs[0x3802>>1] = memtimex_old[0];
223 gp2x_memregs[0x3804>>1] = memtimex_old[1] | 0x8000;
224 printf("RAM timings reset to startup values.\n");
230 unsigned short reg, valmask, val;
234 /* 120.00 97/0/2/7|25/ 7/ 7/11/37 */
235 static const reg_setting lcd_rate_120[] =
237 { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */
238 { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
239 { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */
240 { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */
241 { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */
242 { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */
243 { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
247 /* 100.00 96/0/2/7|29/25/53/15/37 */
248 static const reg_setting lcd_rate_100[] =
250 { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */
251 { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
252 { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */
253 { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */
254 { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */
255 { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */
256 { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
260 static reg_setting lcd_rate_defaults[] =
262 { 0x0914, 0xffff, 0 },
263 { 0x0924, 0xff00, 0 },
264 { 0x281A, 0x00ff, 0 },
265 { 0x281C, 0x00ff, 0 },
266 { 0x281E, 0x00ff, 0 },
267 { 0x2822, 0x01ff, 0 },
268 { 0x2826, 0x0ff0, 0 },
272 static void get_reg_setting(reg_setting *set)
274 for (; set->reg; set++)
276 unsigned short val = gp2x_memregs[set->reg >> 1];
282 static void set_reg_setting(const reg_setting *set)
284 for (; set->reg; set++)
286 unsigned short val = gp2x_memregs[set->reg >> 1];
287 val &= ~set->valmask;
289 gp2x_memregs[set->reg >> 1] = val;
293 static void set_lcd_custom_rate_(int is_pal)
295 if (gp2x_memregs[0x2800>>1] & 0x100) // tv-out
298 printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120);
301 set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120);
305 static void unset_lcd_custom_rate_(void)
307 printf("reset to prev LCD refresh.\n");
308 set_reg_setting(lcd_rate_defaults);
311 static void set_lcd_gamma_(int g100, int A_SNs_curve)
313 float gamma = (float) g100 / 100;
318 gp2x_memregs[0x2880>>1] &= ~(1<<12);
320 gp2x_memregs[0x295C>>1] = 0;
321 for (i = 0; i < 256; i++)
325 const unsigned short grey50=143, grey75=177, grey25=97;
330 // The next formula is all about gaussian interpolation
331 blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) +
332 ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) +
333 (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) +
334 (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) +
335 (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) +
336 ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) +
337 ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) +
338 ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637;
346 g = (unsigned char)(255.0 * pow(blah/255.0, gamma));
347 //printf("%d : %d\n", i, g);
349 gp2x_memregs[0x295E>>1]= s;
350 gp2x_memregs[0x295E>>1]= g;
353 gamma_was_changed = 1;
357 /* these are not quite MMSP2 related,
358 * more to GP2X F100/F200 consoles themselves. */
359 typedef struct ucb1x00_ts_event
361 unsigned short pressure;
365 struct timeval stamp;
368 int gp2x_touchpad_read(int *x, int *y)
370 UCB1X00_TS_EVENT event;
371 static int zero_seen = 0;
374 if (touchdev < 0) return -1;
376 retval = read(touchdev, &event, sizeof(event));
378 perror("touch read failed");
381 // this is to ignore the messed-up 4.1.x driver
382 if (event.pressure == 0) zero_seen = 1;
384 if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
385 if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
386 // printf("read %i %i %i\n", event.pressure, *x, *y);
388 return zero_seen ? event.pressure : 0;
391 static void proc_set(const char *path, const char *val)
396 f = fopen(path, "w");
398 printf("failed to open: %s\n", path);
405 printf("\"%s\" is set to: ", path);
406 f = fopen(path, "r");
408 printf("(open failed)\n");
412 fgets(tmp, sizeof(tmp), f);
418 void mmsp2_init(void)
422 memdev = open("/dev/mem", O_RDWR);
425 perror("open(\"/dev/mem\")");
429 gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
430 if (gp2x_memregs == MAP_FAILED)
432 perror("mmap(memregs)");
435 gp2x_memregl = (unsigned long *) gp2x_memregs;
437 gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers
439 gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED,
440 memdev, gp2x_screenaddrs[0]);
441 if (gp2x_screens[0] == MAP_FAILED)
443 perror("mmap(g_screen_ptr)");
446 printf("framebuffers:\n");
447 printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]);
448 for (i = 1; i < 4; i++)
450 gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE;
451 printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]);
454 g_screen_ptr = gp2x_screens[0];
457 gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];
458 gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];
459 gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
460 gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
462 memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));
464 /* save startup values: LCD refresh */
465 get_reg_setting(lcd_rate_defaults);
467 /* CPU and RAM timings */
468 reg0910 = gp2x_memregs[0x0910>>1];
469 memtimex_old[0] = gp2x_memregs[0x3802>>1];
470 memtimex_old[1] = gp2x_memregs[0x3804>>1];
473 touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
475 FILE *pcf = fopen("/etc/pointercal", "r");
477 fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
478 &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
481 printf("found touchscreen/wm97xx\n");
484 /* disable Linux read-ahead */
485 proc_set("/proc/sys/vm/max-readahead", "0\n");
486 proc_set("/proc/sys/vm/min-readahead", "0\n");
488 /* code940 portion */
491 gp2x_video_flip = gp2x_video_flip_;
492 gp2x_video_flip2 = gp2x_video_flip2_;
493 gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
494 gp2x_video_setpalette = gp2x_video_setpalette_;
495 gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
496 gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
498 gp2x_set_cpuclk = gp2x_set_cpuclk_;
500 set_lcd_custom_rate = set_lcd_custom_rate_;
501 unset_lcd_custom_rate = unset_lcd_custom_rate_;
502 set_lcd_gamma = set_lcd_gamma_;
504 set_ram_timings = set_ram_timings_;
505 unset_ram_timings = unset_ram_timings_;
508 void mmsp2_finish(void)
512 sharedmem940_finish();
514 gp2x_video_RGB_setscaling_(0, 320, 240);
515 gp2x_video_changemode_ll_(16);
517 gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];
518 gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];
519 gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];
520 gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];
522 unset_lcd_custom_rate_();
523 if (gamma_was_changed)
524 set_lcd_gamma_(100, 0);
525 unset_ram_timings_();
526 if (cpuclk_was_changed)
527 gp2x_memregs[0x910>>1] = reg0910;
529 munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);
530 munmap((void *)gp2x_memregs, 0x10000);