7 #include <sys/mman.h>
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8 #include <sys/types.h>
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9 #include <sys/stat.h>
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10 #include <sys/ioctl.h>
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11 #include <sys/soundcard.h>
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12 #include <linux/fb.h>
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16 #include "../gp2x/gp2x.h"
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17 #include "../gp2x/usbjoy.h"
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18 #include "../common/arm_utils.h"
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20 static volatile unsigned int *memregs = MAP_FAILED;
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23 static int fbdev = -1, sounddev = -1, mixerdev = -1, touchdev = -1;
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24 static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
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26 //#define SCREEN_MAP_SIZE (((800*(480+11)*2)+0xfff)&~0xfff)
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27 #define SCREEN_MAP_SIZE (800*480*2)
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28 static void *screen = MAP_FAILED;
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33 void gp2x_video_flip(void)
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37 /* doulblebuffered flip */
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38 void gp2x_video_flip2(void)
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43 void gp2x_video_changemode2(int bpp)
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48 void gp2x_video_changemode(int bpp)
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53 void gp2x_video_setpalette(int *pal, int len)
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58 void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
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63 void gp2x_video_wait_vsync(void)
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68 void gp2x_video_flush_cache(void)
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70 // flushcache(gp2x_screen, (char *)gp2x_screen + 320*240*2, 0);
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74 void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
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79 void gp2x_memcpy_all_buffers(void *data, int offset, int len)
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84 void gp2x_memset_all_buffers(int offset, int byte, int len)
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86 memset((char *)gp2x_screen + offset, byte, len);
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90 void gp2x_pd_clone_buffer2(void)
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95 unsigned long gp2x_joystick_read(int allow_usb_joy)
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97 unsigned long value = 0;
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100 if (allow_usb_joy && num_of_joys > 0) {
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101 // check the usb joy as well..
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102 gp2x_usbjoy_update();
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103 for (i = 0; i < num_of_joys; i++)
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104 value |= gp2x_usbjoy_check(i);
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110 typedef struct ucb1x00_ts_event
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112 unsigned short pressure;
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115 unsigned short pad;
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116 struct timeval stamp;
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117 } UCB1X00_TS_EVENT;
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119 int gp2x_touchpad_read(int *x, int *y)
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121 UCB1X00_TS_EVENT event;
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122 static int zero_seen = 0;
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125 if (touchdev < 0) return -1;
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127 retval = read(touchdev, &event, sizeof(event));
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129 printf("touch read failed %i %i\n", retval, errno);
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132 // this is to ignore the messed-up 4.1.x driver
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133 if (event.pressure == 0) zero_seen = 1;
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135 if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
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136 if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
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137 // printf("read %i %i %i\n", event.pressure, *x, *y);
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139 return zero_seen ? event.pressure : 0;
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143 //static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
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145 void gp2x_start_sound(int rate, int bits, int stereo)
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148 int frag = 0, bsize, buffers;
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150 // if no settings change, we don't need to do anything
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151 if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
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153 if (sounddev > 0) close(sounddev);
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154 sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
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155 if (sounddev == -1)
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156 printf("open(\"/dev/dsp\") failed with %i\n", errno);
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158 ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
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159 ioctl(sounddev, SNDCTL_DSP_SPEED, &rate);
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160 ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
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161 // calculate buffer size
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164 if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding
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165 while ((bsize>>=1)) frag++;
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166 frag |= buffers<<16; // 16 buffers
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167 ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
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170 printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
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171 rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));
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173 s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
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178 void gp2x_sound_write(void *buff, int len)
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180 // write(sounddev, buff, len);
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183 void gp2x_sound_sync(void)
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185 // ioctl(sounddev, SOUND_PCM_SYNC, 0);
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188 void gp2x_sound_volume(int l, int r)
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191 l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
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193 ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /*SOUND_MIXER_WRITE_VOLUME*/
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199 void gp2x_init(void)
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201 struct fb_fix_screeninfo fbfix;
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204 printf("entering init()\n"); fflush(stdout);
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206 memdev = open("/dev/mem", O_RDWR);
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209 printf("open(\"/dev/mem\") failed with %i\n", errno);
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213 memregs = mmap(0, 0x01000000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0x48000000);
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214 if (memregs == MAP_FAILED)
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216 printf("mmap(memregs) failed with %i\n", errno);
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220 ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
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223 printf("ioctl(fbdev) failed with %i\n", errno);
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228 if (fbfix.line_length != 800*2)
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230 gp2x_screen = malloc(800*640*2);
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234 fbdev = open("/dev/fb0", O_RDWR);
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237 printf("open(\"/dev/fb0\") failed with %i\n", errno);
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241 screen = mmap(0, SCREEN_MAP_SIZE, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev, 0);
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242 if (screen == MAP_FAILED)
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244 printf("mmap(fbptr) failed with %i\n", errno);
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247 printf("fbptr %p\n", screen);
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248 // gp2x_screen = (char *)screen + 800*10*2-64;
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249 gp2x_screen = screen;
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253 mixerdev = open("/dev/mixer", O_RDWR);
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254 if (mixerdev == -1)
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255 printf("open(\"/dev/mixer\") failed with %i\n", errno);
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257 /* init usb joys -GnoStiC */
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258 gp2x_usbjoy_init();
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261 touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
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262 if (touchdev >= 0) {
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263 FILE *pcf = fopen("/etc/pointercal", "r");
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265 fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
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266 &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
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269 printf("found touchscreen/wm97xx\n");
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272 printf("exitting init()\n"); fflush(stdout);
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275 void gp2x_deinit(void)
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277 //gp2x_video_changemode(15);
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279 if (screen != MAP_FAILED)
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280 munmap(screen, SCREEN_MAP_SIZE);
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281 if (memregs != MAP_FAILED)
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282 munmap((void *)memregs, 0x10000);
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284 if (fbdev >= 0) close(fbdev);
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285 if (mixerdev >= 0) close(mixerdev);
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286 if (sounddev >= 0) close(sounddev);
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287 if (touchdev >= 0) close(touchdev);
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289 gp2x_usbjoy_deinit();
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291 printf("all done");
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295 void lprintf(const char *fmt, ...)
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306 int crashed_940 = 0;
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308 int readpng(void *dest, const char *fname, int what) { return -1; }
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309 void set_gamma(int g100, int A_SNs_curve) {}
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310 void set_FCLK(unsigned MHZ) {}
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311 void set_LCD_custom_rate(int rate) {}
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312 void unset_LCD_custom_rate(void) {}
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313 void Pause940(int yes) {}
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314 void Reset940(int yes, int bank) {}
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