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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
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4 | #include <math.h> |
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5 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
7 | #include <fcntl.h> |
8 | #include <sys/mman.h> |
9 | #include <unistd.h> |
10 | |
11 | #include "soc.h" |
12 | #include "soc_mmsp2.h" |
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13 | #include "plat_gp2x.h" |
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14 | #include "../common/emu.h" |
15 | #include "../common/arm_utils.h" |
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16 | #include "940ctl.h" |
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17 | |
18 | volatile unsigned short *gp2x_memregs; |
19 | volatile unsigned long *gp2x_memregl; |
20 | extern void *gp2x_screens[4]; |
21 | static int screensel = 0; |
22 | |
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23 | int memdev = -1; /* used by code940 */ |
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24 | static int touchdev = -1; |
25 | static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; |
26 | |
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) |
33 | |
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]; |
37 | |
38 | |
39 | /* video stuff */ |
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40 | static void gp2x_video_flip_(void) |
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41 | { |
42 | unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3]; |
43 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16); |
44 | |
45 | gp2x_memregs[0x2910>>1] = msw; |
46 | gp2x_memregs[0x2914>>1] = msw; |
47 | gp2x_memregs[0x290E>>1] = lsw; |
48 | gp2x_memregs[0x2912>>1] = lsw; |
49 | |
50 | // jump to other buffer: |
51 | g_screen_ptr = gp2x_screens[++screensel&3]; |
52 | } |
53 | |
54 | /* doulblebuffered flip */ |
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55 | static void gp2x_video_flip2_(void) |
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56 | { |
57 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16); |
58 | |
59 | gp2x_memregs[0x2910>>1] = msw; |
60 | gp2x_memregs[0x2914>>1] = msw; |
61 | gp2x_memregs[0x290E>>1] = 0; |
62 | gp2x_memregs[0x2912>>1] = 0; |
63 | |
64 | // jump to other buffer: |
65 | g_screen_ptr = gp2x_screens[++screensel&1]; |
66 | } |
67 | |
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68 | static void gp2x_video_changemode_ll_(int bpp) |
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69 | { |
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*/ |
72 | } |
73 | |
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74 | static void gp2x_video_setpalette_(int *pal, int len) |
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75 | { |
76 | unsigned short *g = (unsigned short *)pal; |
77 | volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1]; |
78 | |
79 | gp2x_memregs[0x2958>>1] = 0; |
80 | |
81 | len *= 2; |
82 | while (len--) |
83 | *memreg = *g++; |
84 | } |
85 | |
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86 | static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H) |
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87 | { |
88 | float escalaw, escalah; |
89 | int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3; |
90 | unsigned short scalw; |
91 | |
92 | // set offset |
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; |
97 | |
98 | escalaw = 1024.0; // RGB Horiz LCD |
99 | escalah = 320.0; // RGB Vert LCD |
100 | |
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101 | if (gp2x_memregs[0x2800>>1]&0x100) //TV-Out |
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102 | { |
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 |
108 | } |
109 | |
110 | // scale horizontal |
111 | scalw = (unsigned short)((float)escalaw *(W/320.0)); |
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112 | /* if there is no horizontal scaling, vertical doesn't work. |
113 | * Here is a nasty wrokaround... */ |
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114 | if (H != 240 && W == 320) scalw--; |
115 | gp2x_memregs[0x2906>>1]=scalw; |
116 | // scale vertical |
117 | gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0)); |
118 | } |
119 | |
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120 | static void gp2x_video_wait_vsync_(void) |
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121 | { |
122 | unsigned short v = gp2x_memregs[0x1182>>1]; |
123 | while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) |
124 | spend_cycles(1024); |
125 | } |
126 | |
127 | /* 940 */ |
128 | void pause940(int yes) |
129 | { |
130 | if (yes) |
131 | gp2x_memregs[0x0904>>1] &= 0xFFFE; |
132 | else |
133 | gp2x_memregs[0x0904>>1] |= 1; |
134 | } |
135 | |
136 | void reset940(int yes, int bank) |
137 | { |
138 | gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); |
139 | } |
140 | |
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141 | /* |
142 | * CPU clock |
143 | * Fout = (m * Fin) / (p * 2^s) |
144 | * m = MDIV+8, p = PDIV+2, s = SDIV |
145 | * |
146 | * m = (Fout * p * 2^s) / Fin |
147 | */ |
148 | |
149 | #define SYS_CLK_FREQ 7372800 |
150 | |
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151 | static void gp2x_set_cpuclk_(unsigned int mhz) |
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152 | { |
153 | unsigned int mdiv, pdiv, sdiv = 0; |
154 | unsigned int v; |
155 | int i; |
156 | |
157 | pdiv = 3; |
158 | mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ; |
159 | if (mdiv & ~0xff) { |
160 | fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz); |
161 | return; |
162 | } |
163 | v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv; |
164 | gp2x_memregs[0x910>>1] = v; |
165 | |
166 | for (i = 0; i < 10000; i++) |
167 | if (!(gp2x_memregs[0x902>>1] & 1)) |
168 | break; |
169 | } |
170 | |
171 | /* RAM timings */ |
172 | static unsigned short memtimex[2]; |
173 | |
174 | #define TIMING_CHECK(t, adj, mask) \ |
175 | t += adj; \ |
176 | if (t & ~mask) \ |
177 | goto bad |
178 | |
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179 | 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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180 | { |
181 | int i; |
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); |
190 | |
191 | /* get spend_cycles() into cache */ |
192 | spend_cycles(1); |
193 | |
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); |
196 | |
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)) |
201 | break; |
202 | |
203 | printf("RAM timings set.\n"); |
204 | return; |
205 | bad: |
206 | fprintf(stderr, "RAM timings invalid.\n"); |
207 | } |
208 | |
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209 | static void set_ram_timings_(void) |
210 | { |
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); |
213 | } |
214 | |
215 | static void unset_ram_timings_(void) |
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216 | { |
217 | gp2x_memregs[0x3802>>1] = memtimex[0]; |
218 | gp2x_memregs[0x3804>>1] = memtimex[1] | 0x8000; |
219 | printf("RAM timings reset to startup values.\n"); |
220 | } |
221 | |
222 | /* LCD refresh */ |
223 | typedef struct |
224 | { |
225 | unsigned short reg, valmask, val; |
226 | } |
227 | reg_setting; |
228 | |
229 | /* 120.00 97/0/2/7|25/ 7/ 7/11/37 */ |
230 | static const reg_setting lcd_rate_120[] = |
231 | { |
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) */ |
239 | { 0, 0, 0 } |
240 | }; |
241 | |
242 | /* 100.00 96/0/2/7|29/25/53/15/37 */ |
243 | static const reg_setting lcd_rate_100[] = |
244 | { |
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) */ |
252 | { 0, 0, 0 } |
253 | }; |
254 | |
255 | static reg_setting lcd_rate_defaults[] = |
256 | { |
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 }, |
264 | { 0, 0, 0 } |
265 | }; |
266 | |
267 | static void get_reg_setting(reg_setting *set) |
268 | { |
269 | for (; set->reg; set++) |
270 | { |
271 | unsigned short val = gp2x_memregs[set->reg >> 1]; |
272 | val &= set->valmask; |
273 | set->val = val; |
274 | } |
275 | } |
276 | |
277 | static void set_reg_setting(const reg_setting *set) |
278 | { |
279 | for (; set->reg; set++) |
280 | { |
281 | unsigned short val = gp2x_memregs[set->reg >> 1]; |
282 | val &= ~set->valmask; |
283 | val |= set->val; |
284 | gp2x_memregs[set->reg >> 1] = val; |
285 | } |
286 | } |
287 | |
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288 | static void set_lcd_custom_rate_(int is_pal) |
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289 | { |
290 | if (gp2x_memregs[0x2800>>1] & 0x100) // tv-out |
291 | return; |
292 | |
293 | printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120); |
294 | fflush(stdout); |
295 | |
296 | set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120); |
297 | printf("done.\n"); |
298 | } |
299 | |
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300 | static void unset_lcd_custom_rate_(void) |
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301 | { |
302 | printf("reset to prev LCD refresh.\n"); |
303 | set_reg_setting(lcd_rate_defaults); |
304 | } |
305 | |
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306 | static void set_lcd_gamma_(int g100, int A_SNs_curve) |
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307 | { |
308 | float gamma = (float) g100 / 100; |
309 | int i; |
310 | gamma = 1 / gamma; |
311 | |
312 | /* enable gamma */ |
313 | gp2x_memregs[0x2880>>1] &= ~(1<<12); |
314 | |
315 | gp2x_memregs[0x295C>>1] = 0; |
316 | for (i = 0; i < 256; i++) |
317 | { |
318 | unsigned char g; |
319 | unsigned short s; |
320 | const unsigned short grey50=143, grey75=177, grey25=97; |
321 | double blah; |
322 | |
323 | if (A_SNs_curve) |
324 | { |
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; |
334 | blah += 0.5; |
335 | } |
336 | else |
337 | { |
338 | blah = i; |
339 | } |
340 | |
341 | g = (unsigned char)(255.0 * pow(blah/255.0, gamma)); |
342 | //printf("%d : %d\n", i, g); |
343 | s = (g<<8) | g; |
344 | gp2x_memregs[0x295E>>1]= s; |
345 | gp2x_memregs[0x295E>>1]= g; |
346 | } |
347 | } |
348 | |
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349 | |
350 | /* these are not quite MMSP2 related, |
351 | * more to GP2X F100/F200 consoles themselves. */ |
352 | typedef struct ucb1x00_ts_event |
353 | { |
354 | unsigned short pressure; |
355 | unsigned short x; |
356 | unsigned short y; |
357 | unsigned short pad; |
358 | struct timeval stamp; |
359 | } UCB1X00_TS_EVENT; |
360 | |
361 | int gp2x_touchpad_read(int *x, int *y) |
362 | { |
363 | UCB1X00_TS_EVENT event; |
364 | static int zero_seen = 0; |
365 | int retval; |
366 | |
367 | if (touchdev < 0) return -1; |
368 | |
369 | retval = read(touchdev, &event, sizeof(event)); |
370 | if (retval <= 0) { |
371 | perror("touch read failed"); |
372 | return -1; |
373 | } |
374 | // this is to ignore the messed-up 4.1.x driver |
375 | if (event.pressure == 0) zero_seen = 1; |
376 | |
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); |
380 | |
381 | return zero_seen ? event.pressure : 0; |
382 | } |
383 | |
384 | static void proc_set(const char *path, const char *val) |
385 | { |
386 | FILE *f; |
387 | char tmp[16]; |
388 | |
389 | f = fopen(path, "w"); |
390 | if (f == NULL) { |
391 | printf("failed to open: %s\n", path); |
392 | return; |
393 | } |
394 | |
395 | fprintf(f, "0\n"); |
396 | fclose(f); |
397 | |
398 | printf("\"%s\" is set to: ", path); |
399 | f = fopen(path, "r"); |
400 | if (f == NULL) { |
401 | printf("(open failed)\n"); |
402 | return; |
403 | } |
404 | |
405 | fgets(tmp, sizeof(tmp), f); |
406 | printf("%s", tmp); |
407 | fclose(f); |
408 | } |
409 | |
410 | |
411 | void mmsp2_init(void) |
412 | { |
413 | int i; |
414 | |
415 | memdev = open("/dev/mem", O_RDWR); |
416 | if (memdev == -1) |
417 | { |
418 | perror("open(\"/dev/mem\")"); |
419 | exit(1); |
420 | } |
421 | |
422 | gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
423 | if (gp2x_memregs == MAP_FAILED) |
424 | { |
425 | perror("mmap(memregs)"); |
426 | exit(1); |
427 | } |
428 | gp2x_memregl = (unsigned long *) gp2x_memregs; |
429 | |
430 | gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers |
431 | |
432 | gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, |
433 | memdev, gp2x_screenaddrs[0]); |
434 | if (gp2x_screens[0] == MAP_FAILED) |
435 | { |
436 | perror("mmap(g_screen_ptr)"); |
437 | exit(1); |
438 | } |
439 | printf("framebuffers:\n"); |
440 | printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]); |
441 | for (i = 1; i < 4; i++) |
442 | { |
443 | gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE; |
444 | printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]); |
445 | } |
446 | |
447 | g_screen_ptr = gp2x_screens[0]; |
448 | screensel = 0; |
449 | |
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]; |
454 | |
455 | memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs)); |
456 | |
0d9bf4fc |
457 | /* default LCD refresh */ |
458 | get_reg_setting(lcd_rate_defaults); |
459 | |
460 | /* RAM timings */ |
461 | memtimex[0] = gp2x_memregs[0x3802>>1]; |
462 | memtimex[1] = gp2x_memregs[0x3804>>1]; |
463 | |
464 | /* touchscreen */ |
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465 | touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY); |
466 | if (touchdev >= 0) { |
467 | FILE *pcf = fopen("/etc/pointercal", "r"); |
468 | if (pcf) { |
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]); |
471 | fclose(pcf); |
472 | } |
473 | printf("found touchscreen/wm97xx\n"); |
474 | } |
475 | |
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"); |
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479 | |
480 | /* code940 portion */ |
481 | sharedmem940_init(); |
ee2a3bdf |
482 | |
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_; |
489 | |
490 | gp2x_set_cpuclk = gp2x_set_cpuclk_; |
491 | |
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_; |
495 | |
496 | set_ram_timings = set_ram_timings_; |
497 | unset_ram_timings = unset_ram_timings_; |
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498 | } |
499 | |
500 | void mmsp2_finish(void) |
501 | { |
502 | reset940(1, 3); |
503 | pause940(1); |
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504 | sharedmem940_finish(); |
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505 | |
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]; |
510 | |
ee2a3bdf |
511 | unset_ram_timings_(); |
512 | unset_lcd_custom_rate_(); |
0d9bf4fc |
513 | |
42171343 |
514 | munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE); |
515 | munmap((void *)gp2x_memregs, 0x10000); |
516 | close(memdev); |
517 | if (touchdev >= 0) |
518 | close(touchdev); |
519 | } |
520 | |