[gpsp.git] / gp2x / gp2x.c

/*  
    Parts used from cpuctrl, Copyright (C) 2005  Hermes/PS2Reality
    Portions Copyright (C) 2009 notaz

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/


#define _GNU_SOURCE
#include "../common.h"
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
#include <sys/types.h>
#include <unistd.h>
#include <ctype.h>
#include "gp2x.h"
#include "pollux_dpc_set.h"

static u32 gpsp_gp2x_dev_audio;
static u32 gpsp_gp2x_dev;
#ifdef WIZ_BUILD
static u32 gpsp_gp2x_gpiodev;
#endif

static u32 gp2x_audio_volume = 74/2;

static volatile u16 *gpsp_gp2x_memregs;
static volatile u32 *gpsp_gp2x_memregl;

u32 button_plat_mask_to_config[PLAT_BUTTON_COUNT] =
{
  GP2X_UP,
  GP2X_LEFT,
  GP2X_DOWN,
  GP2X_RIGHT,
  GP2X_START,
  GP2X_SELECT,
  GP2X_L,
  GP2X_R,
  GP2X_A,
  GP2X_B,
  GP2X_X,
  GP2X_Y,
  GP2X_VOL_DOWN,
  GP2X_VOL_UP,
  GP2X_PUSH,
  GP2X_VOL_MIDDLE
};

u32 gamepad_config_map[PLAT_BUTTON_COUNT] =
{
  BUTTON_ID_UP,                 // Up
  BUTTON_ID_LEFT,               // Left
  BUTTON_ID_DOWN,               // Down
  BUTTON_ID_RIGHT,              // Right
  BUTTON_ID_START,              // Start
  BUTTON_ID_SELECT,             // Select
  BUTTON_ID_L,                  // Ltrigger
  BUTTON_ID_R,                  // Rtrigger
  BUTTON_ID_FPS,                // A
  BUTTON_ID_A,                  // B
  BUTTON_ID_B,                  // X
  BUTTON_ID_MENU,               // Y
  BUTTON_ID_VOLDOWN,            // Vol down
  BUTTON_ID_VOLUP,              // Vol up
  BUTTON_ID_FPS,                // Push
  BUTTON_ID_MENU                // Vol middle
};

#ifdef WIZ_BUILD
#include <linux/fb.h>
void *gpsp_gp2x_screen;
#define fb_buf_count 4
static u32 fb_paddr[fb_buf_count];
static void *fb_vaddr[fb_buf_count];
static u32 fb_work_buf;
static int fb_buf_use;
static int fbdev;

static void fb_video_init()
{
  struct fb_fix_screeninfo fbfix;
  int i, ret;

  fbdev = open("/dev/fb0", O_RDWR);
  if (fbdev < 0) {
    perror("can't open fbdev");
    exit(1);
  }

  ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
  if (ret == -1)
  {
    perror("ioctl(fbdev) failed");
    exit(1);
  }

  printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
  fb_paddr[0] = fbfix.smem_start;

  fb_vaddr[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
    MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
  if (fb_vaddr[0] == MAP_FAILED)
  {
    perror("mmap(fb_vaddr) failed");
    exit(1);
  }
  memset(fb_vaddr[0], 0, 320*240*2*fb_buf_count);

  printf("  %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
  for (i = 1; i < fb_buf_count; i++)
  {
    fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
    fb_vaddr[i] = (char *)fb_vaddr[i-1] + 320*240*2;
    printf("  %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
  }
  fb_work_buf = 0;
  fb_buf_use = fb_buf_count;

  pollux_video_flip();
  warm_change_cb_upper(WCB_C_BIT|WCB_B_BIT, 1);
}

void pollux_video_flip()
{
  gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
  gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
  fb_work_buf++;
  if (fb_work_buf >= fb_buf_use)
    fb_work_buf = 0;
  gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
}

void fb_use_buffers(int count)
{
  if (count < 1)
    count = 1;
  else if (count > fb_buf_count)
    count = fb_buf_count;
  fb_buf_use = count;
  memset(fb_vaddr[0], 0, 320*240*2*count);
}

void wiz_lcd_set_portrait(int y)
{
  static int old_y = -1;
  int cmd[2] = { 0, 0 };

  if (old_y == y)
    return;
  cmd[0] = y ? 6 : 5;
  ioctl(fbdev, _IOW('D', 90, int[2]), cmd);
  gpsp_gp2x_memregl[0x4004>>2] = y ? 0x013f00ef : 0x00ef013f;
  gpsp_gp2x_memregl[0x4000>>2] |= 1 << 3;
  old_y = y;

  /* the above ioctl resets LCD timings, so set them here */
  pollux_dpc_set(gpsp_gp2x_memregs, getenv("pollux_dpc_set"));
}

static void fb_video_exit()
{
  /* switch to default fb mem, turn portrait off */
  gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
  gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
  wiz_lcd_set_portrait(0);
  close(fbdev);
}

static int wiz_gamepak_fd = -1;
static u32 wiz_gamepak_size;

static void wiz_gamepak_cleanup()
{
  if (wiz_gamepak_size)
    munmap(gamepak_rom, wiz_gamepak_size);
  if (wiz_gamepak_fd >= 0)
    close(wiz_gamepak_fd);
  gamepak_rom = NULL;
  wiz_gamepak_size = 0;
  wiz_gamepak_fd = -1;
}

u32 wiz_load_gamepak(char *name)
{
  char *dot_position = strrchr(name, '.');
  u32 ret;

  if (!strcasecmp(dot_position, ".zip"))
  {
    if (wiz_gamepak_fd >= 0)
    {
      wiz_gamepak_cleanup();
      printf("switching to ROM malloc\n");
      init_gamepak_buffer();
    }
    return load_file_zip(name);
  }

  if (wiz_gamepak_fd < 0)
  {
    extern void *gamepak_memory_map;
    free(gamepak_rom);
    free(gamepak_memory_map);
    gamepak_memory_map = NULL;
    printf("switching to ROM mmap\n");
  }
  else
    wiz_gamepak_cleanup();

  wiz_gamepak_fd = open(name, O_RDONLY|O_NOATIME, S_IRUSR);
  if (wiz_gamepak_fd < 0)
  {
    perror("wiz_load_gamepak: open failed");
    return -1;
  }

  ret = lseek(wiz_gamepak_fd, 0, SEEK_END);
  wiz_gamepak_size = gamepak_ram_buffer_size = ret;

  gamepak_rom = mmap(0, ret, PROT_READ, MAP_SHARED, wiz_gamepak_fd, 0);
  if (gamepak_rom == MAP_FAILED)
  {
    perror("wiz_load_gamepak: mmap failed");
    return -1;
  }

  return ret;
}

#endif

static int get_romdir(char *buff, size_t size)
{
  FILE *f;
  char *s;
  int r = -1;
  
  f = fopen("romdir.txt", "r");
  if (f == NULL)
    return -1;

  s = fgets(buff, size, f);
  if (s)
  {
    r = strlen(s);
    while (r > 0 && isspace(buff[r-1]))
      buff[--r] = 0;
  }

  fclose(f);
  return r;
}

void gpsp_plat_init(void)
{
  char buff[256];

  gpsp_gp2x_dev = open("/dev/mem",   O_RDWR);
  gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
  gpsp_gp2x_memregl = (u32 *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED,
   gpsp_gp2x_dev, 0xc0000000);
  gpsp_gp2x_memregs = (u16 *)gpsp_gp2x_memregl;
  warm_init();
#ifdef WIZ_BUILD
  gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
  fb_video_init();
#endif

  if (get_romdir(buff, sizeof(buff)) > 0)
    chdir(buff);

  gp2x_sound_volume(1);
}

void gpsp_plat_quit(void)
{
  char buff1[256], buff2[256];

  getcwd(buff1, sizeof(buff1));
  chdir(main_path);
  if (get_romdir(buff2, sizeof(buff2)) >= 0 &&
    strcmp(buff1, buff2) != 0)
  {
    FILE *f = fopen("romdir.txt", "w");
    if (f != NULL)
    {
      printf("writing romdir: %s\n", buff1);
      fprintf(f, "%s", buff1);
      fclose(f);
    }
  }

  warm_finish();
#ifdef WIZ_BUILD
  close(gpsp_gp2x_gpiodev);
  fb_video_exit();
  wiz_gamepak_cleanup();
#endif
  munmap((void *)gpsp_gp2x_memregl, 0x10000);
  close(gpsp_gp2x_dev_audio);
  close(gpsp_gp2x_dev);

  fcloseall();
  sync();
  exit(0);
}

void gp2x_sound_volume(u32 volume_up)
{
  u32 volume;
  if((volume_up == 0) && (gp2x_audio_volume > 0))
    gp2x_audio_volume--;

  if((volume_up != 0)  && (gp2x_audio_volume < 100))
    gp2x_audio_volume++;

  volume = (gp2x_audio_volume * 0x50) / 100;
  volume = (gp2x_audio_volume << 8) | gp2x_audio_volume;
  ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
}

u32 gpsp_plat_joystick_read(void)
{
#ifdef WIZ_BUILD
  u32 value = 0;
  read(gpsp_gp2x_gpiodev, &value, 4);
  if(value & 0x02)
   value |= 0x05;
  if(value & 0x08)
   value |= 0x14;
  if(value & 0x20)
   value |= 0x50;
  if(value & 0x80)
   value |= 0x41;
  return value;
#else
  u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);

  if(value == 0xFD)
   value = 0xFA;
  if(value == 0xF7)
   value = 0xEB;
  if(value == 0xDF)
   value = 0xAF;
  if(value == 0x7F)
   value = 0xBE;

  return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) | value |
   (gpsp_gp2x_memregs[0x1186 >> 1] << 16));
#endif
}

u32 gpsp_plat_buttons_to_cursor(u32 buttons)
{
  gui_action_type new_button = CURSOR_NONE;

  if(buttons & GP2X_A)
    new_button = CURSOR_BACK;

  if(buttons & GP2X_X)
    new_button = CURSOR_EXIT;

  if(buttons & GP2X_B)
    new_button = CURSOR_SELECT;

  if(buttons & GP2X_UP)
    new_button = CURSOR_UP;

  if(buttons & GP2X_DOWN)
    new_button = CURSOR_DOWN;

  if(buttons & GP2X_LEFT)
    new_button = CURSOR_LEFT;

  if(buttons & GP2X_RIGHT)
    new_button = CURSOR_RIGHT;

  if(buttons & GP2X_L)
    new_button = CURSOR_L;

  if(buttons & GP2X_R)
    new_button = CURSOR_R;

  return new_button;
}

// Fout = (m * Fin) / (p * 2^s)
void set_FCLK(u32 MHZ)
{
  u32 v;
  u32 mdiv, pdiv, sdiv = 0;
#ifdef WIZ_BUILD
  #define SYS_CLK_FREQ 27
  // m = MDIV, p = PDIV, s = SDIV
  pdiv = 9;
  mdiv = (MHZ * pdiv) / SYS_CLK_FREQ;
  mdiv &= 0x3ff;
  v = (pdiv<<18) | (mdiv<<8) | sdiv;

  gpsp_gp2x_memregl[0xf004>>2] = v;
  gpsp_gp2x_memregl[0xf07c>>2] |= 0x8000;
  while (gpsp_gp2x_memregl[0xf07c>>2] & 0x8000)
    ;
#else
  #define SYS_CLK_FREQ 7372800
  // m = MDIV + 8, p = PDIV + 2, s = SDIV
  pdiv = 3;
  mdiv = (MHZ * pdiv * 1000000) / SYS_CLK_FREQ;
  mdiv &= 0xff;
  v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv;
  gpsp_gp2x_memregs[0x910>>1] = v;
#endif
}
Commit	Line	Data
	1	/*
	2	Parts used from cpuctrl, Copyright (C) 2005 Hermes/PS2Reality
	3	Portions Copyright (C) 2009 notaz
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18
	19	*/
	20
	21
	22	#define _GNU_SOURCE
	23	#include "../common.h"
	24	#include <sys/mman.h>
	25	#include <sys/ioctl.h>
	26	#include <sys/soundcard.h>
	27	#include <sys/types.h>
	28	#include <unistd.h>
	29	#include <ctype.h>
	30	#include "gp2x.h"
	31	#include "pollux_dpc_set.h"
	32
	33	static u32 gpsp_gp2x_dev_audio;
	34	static u32 gpsp_gp2x_dev;
	35	#ifdef WIZ_BUILD
	36	static u32 gpsp_gp2x_gpiodev;
	37	#endif
	38
	39	static u32 gp2x_audio_volume = 74/2;
	40
	41	static volatile u16 *gpsp_gp2x_memregs;
	42	static volatile u32 *gpsp_gp2x_memregl;
	43
	44	u32 button_plat_mask_to_config[PLAT_BUTTON_COUNT] =
	45	{
	46	GP2X_UP,
	47	GP2X_LEFT,
	48	GP2X_DOWN,
	49	GP2X_RIGHT,
	50	GP2X_START,
	51	GP2X_SELECT,
	52	GP2X_L,
	53	GP2X_R,
	54	GP2X_A,
	55	GP2X_B,
	56	GP2X_X,
	57	GP2X_Y,
	58	GP2X_VOL_DOWN,
	59	GP2X_VOL_UP,
	60	GP2X_PUSH,
	61	GP2X_VOL_MIDDLE
	62	};
	63
	64	u32 gamepad_config_map[PLAT_BUTTON_COUNT] =
	65	{
	66	BUTTON_ID_UP, // Up
	67	BUTTON_ID_LEFT, // Left
	68	BUTTON_ID_DOWN, // Down
	69	BUTTON_ID_RIGHT, // Right
	70	BUTTON_ID_START, // Start
	71	BUTTON_ID_SELECT, // Select
	72	BUTTON_ID_L, // Ltrigger
	73	BUTTON_ID_R, // Rtrigger
	74	BUTTON_ID_FPS, // A
	75	BUTTON_ID_A, // B
	76	BUTTON_ID_B, // X
	77	BUTTON_ID_MENU, // Y
	78	BUTTON_ID_VOLDOWN, // Vol down
	79	BUTTON_ID_VOLUP, // Vol up
	80	BUTTON_ID_FPS, // Push
	81	BUTTON_ID_MENU // Vol middle
	82	};
	83
	84	#ifdef WIZ_BUILD
	85	#include <linux/fb.h>
	86	void *gpsp_gp2x_screen;
	87	#define fb_buf_count 4
	88	static u32 fb_paddr[fb_buf_count];
	89	static void *fb_vaddr[fb_buf_count];
	90	static u32 fb_work_buf;
	91	static int fb_buf_use;
	92	static int fbdev;
	93
	94	static void fb_video_init()
	95	{
	96	struct fb_fix_screeninfo fbfix;
	97	int i, ret;
	98
	99	fbdev = open("/dev/fb0", O_RDWR);
	100	if (fbdev < 0) {
	101	perror("can't open fbdev");
	102	exit(1);
	103	}
	104
	105	ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
	106	if (ret == -1)
	107	{
	108	perror("ioctl(fbdev) failed");
	109	exit(1);
	110	}
	111
	112	printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
	113	fb_paddr[0] = fbfix.smem_start;
	114
	115	fb_vaddr[0] = mmap(0, 3202402*fb_buf_count, PROT_READ\|PROT_WRITE,
	116	MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
	117	if (fb_vaddr[0] == MAP_FAILED)
	118	{
	119	perror("mmap(fb_vaddr) failed");
	120	exit(1);
	121	}
	122	memset(fb_vaddr[0], 0, 3202402*fb_buf_count);
	123
	124	printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
	125	for (i = 1; i < fb_buf_count; i++)
	126	{
	127	fb_paddr[i] = fb_paddr[i-1] + 3202402;
	128	fb_vaddr[i] = (char )fb_vaddr[i-1] + 320240*2;
	129	printf(" %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
	130	}
	131	fb_work_buf = 0;
	132	fb_buf_use = fb_buf_count;
	133
	134	pollux_video_flip();
	135	warm_change_cb_upper(WCB_C_BIT\|WCB_B_BIT, 1);
	136	}
	137
	138	void pollux_video_flip()
	139	{
	140	gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
	141	gpsp_gp2x_memregl[0x4058>>2] \|= 0x10;
	142	fb_work_buf++;
	143	if (fb_work_buf >= fb_buf_use)
	144	fb_work_buf = 0;
	145	gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
	146	}
	147
	148	void fb_use_buffers(int count)
	149	{
	150	if (count < 1)
	151	count = 1;
	152	else if (count > fb_buf_count)
	153	count = fb_buf_count;
	154	fb_buf_use = count;
	155	memset(fb_vaddr[0], 0, 3202402*count);
	156	}
	157
	158	void wiz_lcd_set_portrait(int y)
	159	{
	160	static int old_y = -1;
	161	int cmd[2] = { 0, 0 };
	162
	163	if (old_y == y)
	164	return;
	165	cmd[0] = y ? 6 : 5;
	166	ioctl(fbdev, _IOW('D', 90, int[2]), cmd);
	167	gpsp_gp2x_memregl[0x4004>>2] = y ? 0x013f00ef : 0x00ef013f;
	168	gpsp_gp2x_memregl[0x4000>>2] \|= 1 << 3;
	169	old_y = y;
	170
	171	/* the above ioctl resets LCD timings, so set them here */
	172	pollux_dpc_set(gpsp_gp2x_memregs, getenv("pollux_dpc_set"));
	173	}
	174
	175	static void fb_video_exit()
	176	{
	177	/* switch to default fb mem, turn portrait off */
	178	gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
	179	gpsp_gp2x_memregl[0x4058>>2] \|= 0x10;
	180	wiz_lcd_set_portrait(0);
	181	close(fbdev);
	182	}
	183
	184	static int wiz_gamepak_fd = -1;
	185	static u32 wiz_gamepak_size;
	186
	187	static void wiz_gamepak_cleanup()
	188	{
	189	if (wiz_gamepak_size)
	190	munmap(gamepak_rom, wiz_gamepak_size);
	191	if (wiz_gamepak_fd >= 0)
	192	close(wiz_gamepak_fd);
	193	gamepak_rom = NULL;
	194	wiz_gamepak_size = 0;
	195	wiz_gamepak_fd = -1;
	196	}
	197
	198	u32 wiz_load_gamepak(char *name)
	199	{
	200	char *dot_position = strrchr(name, '.');
	201	u32 ret;
	202
	203	if (!strcasecmp(dot_position, ".zip"))
	204	{
	205	if (wiz_gamepak_fd >= 0)
	206	{
	207	wiz_gamepak_cleanup();
	208	printf("switching to ROM malloc\n");
	209	init_gamepak_buffer();
	210	}
	211	return load_file_zip(name);
	212	}
	213
	214	if (wiz_gamepak_fd < 0)
	215	{
	216	extern void *gamepak_memory_map;
	217	free(gamepak_rom);
	218	free(gamepak_memory_map);
	219	gamepak_memory_map = NULL;
	220	printf("switching to ROM mmap\n");
	221	}
	222	else
	223	wiz_gamepak_cleanup();
	224
	225	wiz_gamepak_fd = open(name, O_RDONLY\|O_NOATIME, S_IRUSR);
	226	if (wiz_gamepak_fd < 0)
	227	{
	228	perror("wiz_load_gamepak: open failed");
	229	return -1;
	230	}
	231
	232	ret = lseek(wiz_gamepak_fd, 0, SEEK_END);
	233	wiz_gamepak_size = gamepak_ram_buffer_size = ret;
	234
	235	gamepak_rom = mmap(0, ret, PROT_READ, MAP_SHARED, wiz_gamepak_fd, 0);
	236	if (gamepak_rom == MAP_FAILED)
	237	{
	238	perror("wiz_load_gamepak: mmap failed");
	239	return -1;
	240	}
	241
	242	return ret;
	243	}
	244
	245	#endif
	246
	247	static int get_romdir(char *buff, size_t size)
	248	{
	249	FILE *f;
	250	char *s;
	251	int r = -1;
	252
	253	f = fopen("romdir.txt", "r");
	254	if (f == NULL)
	255	return -1;
	256
	257	s = fgets(buff, size, f);
	258	if (s)
	259	{
	260	r = strlen(s);
	261	while (r > 0 && isspace(buff[r-1]))
	262	buff[--r] = 0;
	263	}
	264
	265	fclose(f);
	266	return r;
	267	}
	268
	269	void gpsp_plat_init(void)
	270	{
	271	char buff[256];
	272
	273	gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
	274	gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
	275	gpsp_gp2x_memregl = (u32 *)mmap(0, 0x10000, PROT_READ\|PROT_WRITE, MAP_SHARED,
	276	gpsp_gp2x_dev, 0xc0000000);
	277	gpsp_gp2x_memregs = (u16 *)gpsp_gp2x_memregl;
	278	warm_init();
	279	#ifdef WIZ_BUILD
	280	gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
	281	fb_video_init();
	282	#endif
	283
	284	if (get_romdir(buff, sizeof(buff)) > 0)
	285	chdir(buff);
	286
	287	gp2x_sound_volume(1);
	288	}
	289
	290	void gpsp_plat_quit(void)
	291	{
	292	char buff1[256], buff2[256];
	293
	294	getcwd(buff1, sizeof(buff1));
	295	chdir(main_path);
	296	if (get_romdir(buff2, sizeof(buff2)) >= 0 &&
	297	strcmp(buff1, buff2) != 0)
	298	{
	299	FILE *f = fopen("romdir.txt", "w");
	300	if (f != NULL)
	301	{
	302	printf("writing romdir: %s\n", buff1);
	303	fprintf(f, "%s", buff1);
	304	fclose(f);
	305	}
	306	}
	307
	308	warm_finish();
	309	#ifdef WIZ_BUILD
	310	close(gpsp_gp2x_gpiodev);
	311	fb_video_exit();
	312	wiz_gamepak_cleanup();
	313	#endif
	314	munmap((void *)gpsp_gp2x_memregl, 0x10000);
	315	close(gpsp_gp2x_dev_audio);
	316	close(gpsp_gp2x_dev);
	317
	318	fcloseall();
	319	sync();
	320	exit(0);
	321	}
	322
	323	void gp2x_sound_volume(u32 volume_up)
	324	{
	325	u32 volume;
	326	if((volume_up == 0) && (gp2x_audio_volume > 0))
	327	gp2x_audio_volume--;
	328
	329	if((volume_up != 0) && (gp2x_audio_volume < 100))
	330	gp2x_audio_volume++;
	331
	332	volume = (gp2x_audio_volume * 0x50) / 100;
	333	volume = (gp2x_audio_volume << 8) \| gp2x_audio_volume;
	334	ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
	335	}
	336
	337	u32 gpsp_plat_joystick_read(void)
	338	{
	339	#ifdef WIZ_BUILD
	340	u32 value = 0;
	341	read(gpsp_gp2x_gpiodev, &value, 4);
	342	if(value & 0x02)
	343	value \|= 0x05;
	344	if(value & 0x08)
	345	value \|= 0x14;
	346	if(value & 0x20)
	347	value \|= 0x50;
	348	if(value & 0x80)
	349	value \|= 0x41;
	350	return value;
	351	#else
	352	u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);
	353
	354	if(value == 0xFD)
	355	value = 0xFA;
	356	if(value == 0xF7)
	357	value = 0xEB;
	358	if(value == 0xDF)
	359	value = 0xAF;
	360	if(value == 0x7F)
	361	value = 0xBE;
	362
	363	return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) \| value \|
	364	(gpsp_gp2x_memregs[0x1186 >> 1] << 16));
	365	#endif
	366	}
	367
	368	u32 gpsp_plat_buttons_to_cursor(u32 buttons)
	369	{
	370	gui_action_type new_button = CURSOR_NONE;
	371
	372	if(buttons & GP2X_A)
	373	new_button = CURSOR_BACK;
	374
	375	if(buttons & GP2X_X)
	376	new_button = CURSOR_EXIT;
	377
	378	if(buttons & GP2X_B)
	379	new_button = CURSOR_SELECT;
	380
	381	if(buttons & GP2X_UP)
	382	new_button = CURSOR_UP;
	383
	384	if(buttons & GP2X_DOWN)
	385	new_button = CURSOR_DOWN;
	386
	387	if(buttons & GP2X_LEFT)
	388	new_button = CURSOR_LEFT;
	389
	390	if(buttons & GP2X_RIGHT)
	391	new_button = CURSOR_RIGHT;
	392
	393	if(buttons & GP2X_L)
	394	new_button = CURSOR_L;
	395
	396	if(buttons & GP2X_R)
	397	new_button = CURSOR_R;
	398
	399	return new_button;
	400	}
	401
	402	// Fout = (m * Fin) / (p * 2^s)
	403	void set_FCLK(u32 MHZ)
	404	{
	405	u32 v;
	406	u32 mdiv, pdiv, sdiv = 0;
	407	#ifdef WIZ_BUILD
	408	#define SYS_CLK_FREQ 27
	409	// m = MDIV, p = PDIV, s = SDIV
	410	pdiv = 9;
	411	mdiv = (MHZ * pdiv) / SYS_CLK_FREQ;
	412	mdiv &= 0x3ff;
	413	v = (pdiv<<18) \| (mdiv<<8) \| sdiv;
	414
	415	gpsp_gp2x_memregl[0xf004>>2] = v;
	416	gpsp_gp2x_memregl[0xf07c>>2] \|= 0x8000;
	417	while (gpsp_gp2x_memregl[0xf07c>>2] & 0x8000)
	418	;
	419	#else
	420	#define SYS_CLK_FREQ 7372800
	421	// m = MDIV + 8, p = PDIV + 2, s = SDIV
	422	pdiv = 3;
	423	mdiv = (MHZ * pdiv * 1000000) / SYS_CLK_FREQ;
	424	mdiv &= 0xff;
	425	v = ((mdiv-8)<<8) \| ((pdiv-2)<<2) \| sdiv;
	426	gpsp_gp2x_memregs[0x910>>1] = v;
	427	#endif
	428	}
	429