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- #include <stdio.h>
- #include <stdlib.h>
- #include <stdarg.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/mman.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/ioctl.h>
- #include <sys/soundcard.h>
- #include <linux/fb.h>
- #include <fcntl.h>
- #include <errno.h>
- #include "../gp2x/gp2x.h"
- #include "../gp2x/usbjoy.h"
- #include "../common/arm_utils.h"
- static volatile unsigned int *memregs = MAP_FAILED;
- //static
- int memdev = 0;
- static int fbdev = -1, sounddev = -1, mixerdev = -1, touchdev = -1;
- static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
- //#define SCREEN_MAP_SIZE (((800*(480+11)*2)+0xfff)&~0xfff)
- #define SCREEN_MAP_SIZE (800*480*2)
- static void *screen = MAP_FAILED;
- void *gp2x_screen;
- /* video stuff */
- void gp2x_video_flip(void)
- {
- }
- /* doulblebuffered flip */
- void gp2x_video_flip2(void)
- {
- }
- void gp2x_video_changemode2(int bpp)
- {
- }
- void gp2x_video_changemode(int bpp)
- {
- }
- void gp2x_video_setpalette(int *pal, int len)
- {
- }
- void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
- {
- }
- void gp2x_video_wait_vsync(void)
- {
- }
- void gp2x_video_flush_cache(void)
- {
- // flushcache(gp2x_screen, (char *)gp2x_screen + 320*240*2, 0);
- }
- void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
- {
- }
- void gp2x_memcpy_all_buffers(void *data, int offset, int len)
- {
- }
- void gp2x_memset_all_buffers(int offset, int byte, int len)
- {
- memset((char *)gp2x_screen + offset, byte, len);
- }
- void gp2x_pd_clone_buffer2(void)
- {
- }
- unsigned long gp2x_joystick_read(int allow_usb_joy)
- {
- unsigned long value = 0;
- int i;
- if (allow_usb_joy && num_of_joys > 0) {
- // check the usb joy as well..
- gp2x_usbjoy_update();
- for (i = 0; i < num_of_joys; i++)
- value |= gp2x_usbjoy_check(i);
- }
- return value;
- }
- typedef struct ucb1x00_ts_event
- {
- unsigned short pressure;
- unsigned short x;
- unsigned short y;
- unsigned short pad;
- struct timeval stamp;
- } UCB1X00_TS_EVENT;
- int gp2x_touchpad_read(int *x, int *y)
- {
- UCB1X00_TS_EVENT event;
- static int zero_seen = 0;
- int retval;
- if (touchdev < 0) return -1;
- retval = read(touchdev, &event, sizeof(event));
- if (retval <= 0) {
- printf("touch read failed %i %i\n", retval, errno);
- return -1;
- }
- // this is to ignore the messed-up 4.1.x driver
- if (event.pressure == 0) zero_seen = 1;
- if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
- if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
- // printf("read %i %i %i\n", event.pressure, *x, *y);
- return zero_seen ? event.pressure : 0;
- }
- //static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
- void gp2x_start_sound(int rate, int bits, int stereo)
- {
- #if 0
- int frag = 0, bsize, buffers;
- // if no settings change, we don't need to do anything
- if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
- if (sounddev > 0) close(sounddev);
- sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
- if (sounddev == -1)
- printf("open(\"/dev/dsp\") failed with %i\n", errno);
- ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
- ioctl(sounddev, SNDCTL_DSP_SPEED, &rate);
- ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
- // calculate buffer size
- buffers = 16;
- bsize = rate / 32;
- if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding
- while ((bsize>>=1)) frag++;
- frag |= buffers<<16; // 16 buffers
- ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
- usleep(192*1024);
- printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
- rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));
- s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
- #endif
- }
- void gp2x_sound_write(void *buff, int len)
- {
- // write(sounddev, buff, len);
- }
- void gp2x_sound_sync(void)
- {
- // ioctl(sounddev, SOUND_PCM_SYNC, 0);
- }
- void gp2x_sound_volume(int l, int r)
- {
- #if 0
- l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
- l<<=8; l|=r;
- ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /*SOUND_MIXER_WRITE_VOLUME*/
- #endif
- }
- /* common */
- void gp2x_init(void)
- {
- struct fb_fix_screeninfo fbfix;
- int ret;
- printf("entering init()\n"); fflush(stdout);
- memdev = open("/dev/mem", O_RDWR);
- if (memdev == -1)
- {
- printf("open(\"/dev/mem\") failed with %i\n", errno);
- exit(1);
- }
- /*
- memregs = mmap(0, 0x01000000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0x48000000);
- if (memregs == MAP_FAILED)
- {
- printf("mmap(memregs) failed with %i\n", errno);
- exit(1);
- }
- */
- fbdev = open("/dev/fb0", O_RDWR);
- if (fbdev == -1)
- {
- printf("open(\"/dev/fb0\") failed with %i\n", errno);
- exit(1);
- }
- ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
- if (ret == -1)
- {
- printf("ioctl(fbdev) failed with %i\n", errno);
- exit(1);
- }
- // squidge hack
- if (fbfix.line_length != 800*2)
- {
- gp2x_screen = malloc(800*640*2);
- return;
- }
- screen = mmap(0, SCREEN_MAP_SIZE, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev, 0);
- if (screen == MAP_FAILED)
- {
- printf("mmap(fbptr) failed with %i\n", errno);
- exit(1);
- }
- printf("fbptr %p\n", screen);
- // gp2x_screen = (char *)screen + 800*10*2-64;
- gp2x_screen = screen;
- // snd
- mixerdev = open("/dev/mixer", O_RDWR);
- if (mixerdev == -1)
- printf("open(\"/dev/mixer\") failed with %i\n", errno);
- /* init usb joys -GnoStiC */
- gp2x_usbjoy_init();
- // touchscreen
- touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
- if (touchdev >= 0) {
- FILE *pcf = fopen("/etc/pointercal", "r");
- if (pcf) {
- fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
- &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
- fclose(pcf);
- }
- printf("found touchscreen/wm97xx\n");
- }
- printf("exitting init()\n"); fflush(stdout);
- }
- void gp2x_deinit(void)
- {
- //gp2x_video_changemode(15);
- if (screen != MAP_FAILED)
- munmap(screen, SCREEN_MAP_SIZE);
- if (memregs != MAP_FAILED)
- munmap((void *)memregs, 0x10000);
- close(memdev);
- if (fbdev >= 0) close(fbdev);
- if (mixerdev >= 0) close(mixerdev);
- if (sounddev >= 0) close(sounddev);
- if (touchdev >= 0) close(touchdev);
- gp2x_usbjoy_deinit();
- printf("all done");
- }
- /* lprintf */
- void lprintf(const char *fmt, ...)
- {
- va_list vl;
- va_start(vl, fmt);
- vprintf(fmt, vl);
- va_end(vl);
- }
- /* fake GP2X */
- int crashed_940 = 0;
- int readpng(void *dest, const char *fname, int what) { return -1; }
- void set_gamma(int g100, int A_SNs_curve) {}
- void set_FCLK(unsigned MHZ) {}
- void set_LCD_custom_rate(int rate) {}
- void unset_LCD_custom_rate(void) {}
- void Pause940(int yes) {}
- void Reset940(int yes, int bank) {}
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