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];
36 static unsigned short gp2x_screenaddr_old[4];
40 static void gp2x_video_flip_(void)
42 unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];
43 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);
45 gp2x_memregs[0x2910>>1] = msw;
46 gp2x_memregs[0x2914>>1] = msw;
47 gp2x_memregs[0x290E>>1] = lsw;
48 gp2x_memregs[0x2912>>1] = lsw;
50 // jump to other buffer:
51 g_screen_ptr = gp2x_screens[++screensel&3];
54 /* doulblebuffered flip */
55 static void gp2x_video_flip2_(void)
57 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);
59 gp2x_memregs[0x2910>>1] = msw;
60 gp2x_memregs[0x2914>>1] = msw;
61 gp2x_memregs[0x290E>>1] = 0;
62 gp2x_memregs[0x2912>>1] = 0;
64 // jump to other buffer:
65 g_screen_ptr = gp2x_screens[++screensel&1];
68 static void gp2x_video_changemode_ll_(int bpp)
70 gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/
71 gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/
74 static void gp2x_video_setpalette_(int *pal, int len)
76 unsigned short *g = (unsigned short *)pal;
77 volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];
79 gp2x_memregs[0x2958>>1] = 0;
86 static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
88 float escalaw, escalah;
89 int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;
93 gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;
94 gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;
95 gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;
96 gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;
98 escalaw = 1024.0; // RGB Horiz LCD
99 escalah = 320.0; // RGB Vert LCD
101 if (gp2x_memregs[0x2800>>1]&0x100) //TV-Out
103 escalaw=489.0; // RGB Horiz TV (PAL, NTSC)
104 if (gp2x_memregs[0x2818>>1] == 287) //PAL
105 escalah=274.0; // RGB Vert TV PAL
106 else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
107 escalah=331.0; // RGB Vert TV NTSC
111 scalw = (unsigned short)((float)escalaw *(W/320.0));
112 /* if there is no horizontal scaling, vertical doesn't work.
113 * Here is a nasty wrokaround... */
114 if (H != 240 && W == 320) scalw--;
115 gp2x_memregs[0x2906>>1]=scalw;
117 gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
120 static void gp2x_video_wait_vsync_(void)
122 unsigned short v = gp2x_memregs[0x1182>>1];
123 while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10))
128 void pause940(int yes)
131 gp2x_memregs[0x0904>>1] &= 0xFFFE;
133 gp2x_memregs[0x0904>>1] |= 1;
136 void reset940(int yes, int bank)
138 gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
143 * Fout = (m * Fin) / (p * 2^s)
144 * m = MDIV+8, p = PDIV+2, s = SDIV
146 * m = (Fout * p * 2^s) / Fin
149 #define SYS_CLK_FREQ 7372800
151 static void gp2x_set_cpuclk_(unsigned int mhz)
153 unsigned int mdiv, pdiv, sdiv = 0;
158 mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ;
160 fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz);
163 v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv;
164 gp2x_memregs[0x910>>1] = v;
166 for (i = 0; i < 10000; i++)
167 if (!(gp2x_memregs[0x902>>1] & 1))
172 static unsigned short memtimex[2];
174 #define TIMING_CHECK(t, adj, mask) \
179 static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
182 TIMING_CHECK(tCAS, -2, 0x1);
183 TIMING_CHECK(tRC, -1, 0xf);
184 TIMING_CHECK(tRAS, -1, 0xf);
185 TIMING_CHECK(tWR, -1, 0xf);
186 TIMING_CHECK(tMRD, -1, 0xf);
187 TIMING_CHECK(tRFC, -1, 0xf);
188 TIMING_CHECK(tRP, -1, 0xf);
189 TIMING_CHECK(tRCD, -1, 0xf);
191 /* get spend_cycles() into cache */
194 gp2x_memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF);
195 gp2x_memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF);
197 /* be sure we don't access the mem while it's being reprogrammed */
198 spend_cycles(128*1024);
199 for (i = 0; i < 8*1024; i++)
200 if (!(gp2x_memregs[0x3804>>1] & 0x8000))
203 printf("RAM timings set.\n");
206 fprintf(stderr, "RAM timings invalid.\n");
209 static void set_ram_timings_(void)
211 /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */
212 set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2);
215 static void unset_ram_timings_(void)
217 gp2x_memregs[0x3802>>1] = memtimex[0];
218 gp2x_memregs[0x3804>>1] = memtimex[1] | 0x8000;
219 printf("RAM timings reset to startup values.\n");
225 unsigned short reg, valmask, val;
229 /* 120.00 97/0/2/7|25/ 7/ 7/11/37 */
230 static const reg_setting lcd_rate_120[] =
232 { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */
233 { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
234 { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */
235 { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */
236 { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */
237 { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */
238 { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
242 /* 100.00 96/0/2/7|29/25/53/15/37 */
243 static const reg_setting lcd_rate_100[] =
245 { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */
246 { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */
247 { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */
248 { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */
249 { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */
250 { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */
251 { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */
255 static reg_setting lcd_rate_defaults[] =
257 { 0x0914, 0xffff, 0 },
258 { 0x0924, 0xff00, 0 },
259 { 0x281A, 0x00ff, 0 },
260 { 0x281C, 0x00ff, 0 },
261 { 0x281E, 0x00ff, 0 },
262 { 0x2822, 0x01ff, 0 },
263 { 0x2826, 0x0ff0, 0 },
267 static void get_reg_setting(reg_setting *set)
269 for (; set->reg; set++)
271 unsigned short val = gp2x_memregs[set->reg >> 1];
277 static void set_reg_setting(const reg_setting *set)
279 for (; set->reg; set++)
281 unsigned short val = gp2x_memregs[set->reg >> 1];
282 val &= ~set->valmask;
284 gp2x_memregs[set->reg >> 1] = val;
288 static void set_lcd_custom_rate_(int is_pal)
290 if (gp2x_memregs[0x2800>>1] & 0x100) // tv-out
293 printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120);
296 set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120);
300 static void unset_lcd_custom_rate_(void)
302 printf("reset to prev LCD refresh.\n");
303 set_reg_setting(lcd_rate_defaults);
306 static void set_lcd_gamma_(int g100, int A_SNs_curve)
308 float gamma = (float) g100 / 100;
313 gp2x_memregs[0x2880>>1] &= ~(1<<12);
315 gp2x_memregs[0x295C>>1] = 0;
316 for (i = 0; i < 256; i++)
320 const unsigned short grey50=143, grey75=177, grey25=97;
325 // The next formula is all about gaussian interpolation
326 blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) +
327 ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) +
328 (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) +
329 (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) +
330 (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) +
331 ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) +
332 ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) +
333 ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637;
341 g = (unsigned char)(255.0 * pow(blah/255.0, gamma));
342 //printf("%d : %d\n", i, g);
344 gp2x_memregs[0x295E>>1]= s;
345 gp2x_memregs[0x295E>>1]= g;
350 /* these are not quite MMSP2 related,
351 * more to GP2X F100/F200 consoles themselves. */
352 typedef struct ucb1x00_ts_event
354 unsigned short pressure;
358 struct timeval stamp;
361 int gp2x_touchpad_read(int *x, int *y)
363 UCB1X00_TS_EVENT event;
364 static int zero_seen = 0;
367 if (touchdev < 0) return -1;
369 retval = read(touchdev, &event, sizeof(event));
371 perror("touch read failed");
374 // this is to ignore the messed-up 4.1.x driver
375 if (event.pressure == 0) zero_seen = 1;
377 if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
378 if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
379 // printf("read %i %i %i\n", event.pressure, *x, *y);
381 return zero_seen ? event.pressure : 0;
384 static void proc_set(const char *path, const char *val)
389 f = fopen(path, "w");
391 printf("failed to open: %s\n", path);
398 printf("\"%s\" is set to: ", path);
399 f = fopen(path, "r");
401 printf("(open failed)\n");
405 fgets(tmp, sizeof(tmp), f);
411 void mmsp2_init(void)
415 memdev = open("/dev/mem", O_RDWR);
418 perror("open(\"/dev/mem\")");
422 gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
423 if (gp2x_memregs == MAP_FAILED)
425 perror("mmap(memregs)");
428 gp2x_memregl = (unsigned long *) gp2x_memregs;
430 gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers
432 gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED,
433 memdev, gp2x_screenaddrs[0]);
434 if (gp2x_screens[0] == MAP_FAILED)
436 perror("mmap(g_screen_ptr)");
439 printf("framebuffers:\n");
440 printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]);
441 for (i = 1; i < 4; i++)
443 gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE;
444 printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]);
447 g_screen_ptr = gp2x_screens[0];
450 gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];
451 gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];
452 gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
453 gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
455 memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));
457 /* default LCD refresh */
458 get_reg_setting(lcd_rate_defaults);
461 memtimex[0] = gp2x_memregs[0x3802>>1];
462 memtimex[1] = gp2x_memregs[0x3804>>1];
465 touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
467 FILE *pcf = fopen("/etc/pointercal", "r");
469 fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
470 &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
473 printf("found touchscreen/wm97xx\n");
476 /* disable Linux read-ahead */
477 proc_set("/proc/sys/vm/max-readahead", "0\n");
478 proc_set("/proc/sys/vm/min-readahead", "0\n");
480 /* code940 portion */
483 gp2x_video_flip = gp2x_video_flip_;
484 gp2x_video_flip2 = gp2x_video_flip2_;
485 gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
486 gp2x_video_setpalette = gp2x_video_setpalette_;
487 gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
488 gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
490 gp2x_set_cpuclk = gp2x_set_cpuclk_;
492 set_lcd_custom_rate = set_lcd_custom_rate_;
493 unset_lcd_custom_rate = unset_lcd_custom_rate_;
494 set_lcd_gamma = set_lcd_gamma_;
496 set_ram_timings = set_ram_timings_;
497 unset_ram_timings = unset_ram_timings_;
500 void mmsp2_finish(void)
504 sharedmem940_finish();
506 gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];
507 gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];
508 gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];
509 gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];
511 unset_ram_timings_();
512 unset_lcd_custom_rate_();
514 munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);
515 munmap((void *)gp2x_memregs, 0x10000);