[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;
static u32 gpsp_gp2x_gpiodev;

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
8b6232a6	1	/*
	2	Parts used from cpuctrl, Copyright (C) 2005 Hermes/PS2Reality
	3	Portions Copyright (C) 2009 notaz
2823a4c8	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
638cc626	22	#define _GNU_SOURCE
8b6232a6	23	#include "../common.h"
2823a4c8	24	#include <sys/mman.h>
	25	#include <sys/ioctl.h>
	26	#include <sys/soundcard.h>
638cc626	27	#include <sys/types.h>
638cc626	28	#include <unistd.h>
8b6232a6	29	#include <ctype.h>
2823a4c8	30	#include "gp2x.h"
e8f5db5d	31	#include "pollux_dpc_set.h"
2823a4c8	32
43c24b30	33	static u32 gpsp_gp2x_dev_audio;
	34	static u32 gpsp_gp2x_dev;
	35	static u32 gpsp_gp2x_gpiodev;
	36
	37	static u32 gp2x_audio_volume = 74/2;
2823a4c8	38
4742480d	39	static volatile u16 *gpsp_gp2x_memregs;
4742480d	40	static volatile u32 *gpsp_gp2x_memregl;
2823a4c8	41
eb3668fc	42	u32 button_plat_mask_to_config[PLAT_BUTTON_COUNT] =
43c24b30	43	{
	44	GP2X_UP,
	45	GP2X_LEFT,
	46	GP2X_DOWN,
	47	GP2X_RIGHT,
	48	GP2X_START,
	49	GP2X_SELECT,
	50	GP2X_L,
	51	GP2X_R,
	52	GP2X_A,
	53	GP2X_B,
	54	GP2X_X,
	55	GP2X_Y,
	56	GP2X_VOL_DOWN,
	57	GP2X_VOL_UP,
	58	GP2X_PUSH,
	59	GP2X_VOL_MIDDLE
	60	};
	61
eb3668fc	62	u32 gamepad_config_map[PLAT_BUTTON_COUNT] =
43c24b30	63	{
	64	BUTTON_ID_UP, // Up
	65	BUTTON_ID_LEFT, // Left
	66	BUTTON_ID_DOWN, // Down
	67	BUTTON_ID_RIGHT, // Right
	68	BUTTON_ID_START, // Start
	69	BUTTON_ID_SELECT, // Select
	70	BUTTON_ID_L, // Ltrigger
	71	BUTTON_ID_R, // Rtrigger
	72	BUTTON_ID_FPS, // A
	73	BUTTON_ID_A, // B
	74	BUTTON_ID_B, // X
	75	BUTTON_ID_MENU, // Y
	76	BUTTON_ID_VOLDOWN, // Vol down
	77	BUTTON_ID_VOLUP, // Vol up
	78	BUTTON_ID_FPS, // Push
	79	BUTTON_ID_MENU // Vol middle
	80	};
	81
4cdfc0bc	82	#ifdef WIZ_BUILD
	83	#include <linux/fb.h>
	84	void *gpsp_gp2x_screen;
5c6e71a0	85	#define fb_buf_count 4
	86	static u32 fb_paddr[fb_buf_count];
	87	static void *fb_vaddr[fb_buf_count];
4cdfc0bc	88	static u32 fb_work_buf;
5c6e71a0	89	static int fb_buf_use;
42c81190	90	static int fbdev;
4cdfc0bc	91
	92	static void fb_video_init()
	93	{
	94	struct fb_fix_screeninfo fbfix;
	95	int i, ret;
4cdfc0bc	96
	97	fbdev = open("/dev/fb0", O_RDWR);
	98	if (fbdev < 0) {
	99	perror("can't open fbdev");
	100	exit(1);
	101	}
	102
	103	ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
	104	if (ret == -1)
	105	{
	106	perror("ioctl(fbdev) failed");
	107	exit(1);
	108	}
	109
	110	printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
	111	fb_paddr[0] = fbfix.smem_start;
4cdfc0bc	112
	113	fb_vaddr[0] = mmap(0, 3202402*fb_buf_count, PROT_READ\|PROT_WRITE,
	114	MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
	115	if (fb_vaddr[0] == MAP_FAILED)
	116	{
	117	perror("mmap(fb_vaddr) failed");
	118	exit(1);
	119	}
	120	memset(fb_vaddr[0], 0, 3202402*fb_buf_count);
	121
	122	printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
	123	for (i = 1; i < fb_buf_count; i++)
	124	{
	125	fb_paddr[i] = fb_paddr[i-1] + 3202402;
	126	fb_vaddr[i] = (char )fb_vaddr[i-1] + 320240*2;
	127	printf(" %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
	128	}
	129	fb_work_buf = 0;
	130	fb_buf_use = fb_buf_count;
	131
	132	pollux_video_flip();
	133	warm_change_cb_upper(WCB_C_BIT\|WCB_B_BIT, 1);
	134	}
	135
	136	void pollux_video_flip()
	137	{
4cdfc0bc	138	gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
	139	gpsp_gp2x_memregl[0x4058>>2] \|= 0x10;
	140	fb_work_buf++;
	141	if (fb_work_buf >= fb_buf_use)
	142	fb_work_buf = 0;
	143	gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
	144	}
	145
	146	void fb_use_buffers(int count)
	147	{
	148	if (count < 1)
	149	count = 1;
	150	else if (count > fb_buf_count)
	151	count = fb_buf_count;
	152	fb_buf_use = count;
5c6e71a0	153	memset(fb_vaddr[0], 0, 3202402*count);
4cdfc0bc	154	}
4cdfc0bc	155
42c81190	156	void wiz_lcd_set_portrait(int y)
	157	{
	158	static int old_y = -1;
	159	int cmd[2] = { 0, 0 };
	160
	161	if (old_y == y)
	162	return;
	163	cmd[0] = y ? 6 : 5;
	164	ioctl(fbdev, _IOW('D', 90, int[2]), cmd);
	165	gpsp_gp2x_memregl[0x4004>>2] = y ? 0x013f00ef : 0x00ef013f;
	166	gpsp_gp2x_memregl[0x4000>>2] \|= 1 << 3;
	167	old_y = y;
e8f5db5d	168
	169	/* the above ioctl resets LCD timings, so set them here */
	170	pollux_dpc_set(gpsp_gp2x_memregs, getenv("pollux_dpc_set"));
42c81190	171	}
42c81190	172
4cdfc0bc	173	static void fb_video_exit()
4cdfc0bc	174	{
42c81190	175	/* switch to default fb mem, turn portrait off */
4cdfc0bc	176	gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
4cdfc0bc	177	gpsp_gp2x_memregl[0x4058>>2] \|= 0x10;
42c81190	178	wiz_lcd_set_portrait(0);
	179	close(fbdev);
	180	}
	181
	182	static int wiz_gamepak_fd = -1;
	183	static u32 wiz_gamepak_size;
	184
	185	static void wiz_gamepak_cleanup()
	186	{
	187	if (wiz_gamepak_size)
	188	munmap(gamepak_rom, wiz_gamepak_size);
	189	if (wiz_gamepak_fd >= 0)
	190	close(wiz_gamepak_fd);
	191	gamepak_rom = NULL;
	192	wiz_gamepak_size = 0;
	193	wiz_gamepak_fd = -1;
4cdfc0bc	194	}
42c81190	195
	196	u32 wiz_load_gamepak(char *name)
	197	{
	198	char *dot_position = strrchr(name, '.');
	199	u32 ret;
	200
	201	if (!strcasecmp(dot_position, ".zip"))
	202	{
	203	if (wiz_gamepak_fd >= 0)
	204	{
	205	wiz_gamepak_cleanup();
	206	printf("switching to ROM malloc\n");
	207	init_gamepak_buffer();
	208	}
	209	return load_file_zip(name);
	210	}
	211
	212	if (wiz_gamepak_fd < 0)
	213	{
	214	extern void *gamepak_memory_map;
	215	free(gamepak_rom);
	216	free(gamepak_memory_map);
	217	gamepak_memory_map = NULL;
	218	printf("switching to ROM mmap\n");
	219	}
	220	else
	221	wiz_gamepak_cleanup();
	222
	223	wiz_gamepak_fd = open(name, O_RDONLY\|O_NOATIME, S_IRUSR);
	224	if (wiz_gamepak_fd < 0)
	225	{
	226	perror("wiz_load_gamepak: open failed");
	227	return -1;
	228	}
	229
	230	ret = lseek(wiz_gamepak_fd, 0, SEEK_END);
	231	wiz_gamepak_size = gamepak_ram_buffer_size = ret;
	232
	233	gamepak_rom = mmap(0, ret, PROT_READ, MAP_SHARED, wiz_gamepak_fd, 0);
	234	if (gamepak_rom == MAP_FAILED)
	235	{
	236	perror("wiz_load_gamepak: mmap failed");
	237	return -1;
	238	}
	239
	240	return ret;
	241	}
	242
4cdfc0bc	243	#endif
4cdfc0bc	244
5a01fba6	245	static int get_romdir(char *buff, size_t size)
2823a4c8	246	{
638cc626	247	FILE *f;
5a01fba6	248	char *s;
	249	int r = -1;
	250
	251	f = fopen("romdir.txt", "r");
	252	if (f == NULL)
	253	return -1;
	254
	255	s = fgets(buff, size, f);
	256	if (s)
	257	{
	258	r = strlen(s);
	259	while (r > 0 && isspace(buff[r-1]))
	260	buff[--r] = 0;
	261	}
	262
	263	fclose(f);
	264	return r;
	265	}
	266
43c24b30	267	void gpsp_plat_init(void)
5a01fba6	268	{
	269	char buff[256];
	270
2823a4c8	271	gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
2823a4c8	272	gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
8b6232a6	273	gpsp_gp2x_memregl = (u32 *)mmap(0, 0x10000, PROT_READ\|PROT_WRITE, MAP_SHARED,
2823a4c8	274	gpsp_gp2x_dev, 0xc0000000);
8b6232a6	275	gpsp_gp2x_memregs = (u16 *)gpsp_gp2x_memregl;
638cc626	276	warm_init();
4742480d	277	#ifdef WIZ_BUILD
4742480d	278	gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
4cdfc0bc	279	fb_video_init();
4cdfc0bc	280	#endif
2823a4c8	281
5a01fba6	282	if (get_romdir(buff, sizeof(buff)) > 0)
5a01fba6	283	chdir(buff);
638cc626	284
2823a4c8	285	gp2x_sound_volume(1);
	286	}
	287
43c24b30	288	void gpsp_plat_quit(void)
2823a4c8	289	{
5a01fba6	290	char buff1[256], buff2[256];
638cc626	291
5a01fba6	292	getcwd(buff1, sizeof(buff1));
638cc626	293	chdir(main_path);
5a01fba6	294	if (get_romdir(buff2, sizeof(buff2)) >= 0 &&
5a01fba6	295	strcmp(buff1, buff2) != 0)
638cc626	296	{
5a01fba6	297	FILE *f = fopen("romdir.txt", "w");
	298	if (f != NULL)
	299	{
	300	printf("writing romdir: %s\n", buff1);
	301	fprintf(f, "%s", buff1);
	302	fclose(f);
	303	}
638cc626	304	}
	305
	306	warm_finish();
4742480d	307	#ifdef WIZ_BUILD
4742480d	308	close(gpsp_gp2x_gpiodev);
4cdfc0bc	309	fb_video_exit();
42c81190	310	wiz_gamepak_cleanup();
4742480d	311	#endif
4cdfc0bc	312	munmap((void *)gpsp_gp2x_memregl, 0x10000);
	313	close(gpsp_gp2x_dev_audio);
	314	close(gpsp_gp2x_dev);
90206450	315
638cc626	316	fcloseall();
5a01fba6	317	sync();
42c81190	318	exit(0);
2823a4c8	319	}
	320
	321	void gp2x_sound_volume(u32 volume_up)
	322	{
	323	u32 volume;
	324	if((volume_up == 0) && (gp2x_audio_volume > 0))
	325	gp2x_audio_volume--;
	326
	327	if((volume_up != 0) && (gp2x_audio_volume < 100))
	328	gp2x_audio_volume++;
	329
	330	volume = (gp2x_audio_volume * 0x50) / 100;
	331	volume = (gp2x_audio_volume << 8) \| gp2x_audio_volume;
	332	ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
	333	}
	334
43c24b30	335	u32 gpsp_plat_joystick_read(void)
4742480d	336	{
	337	#ifdef WIZ_BUILD
	338	u32 value = 0;
	339	read(gpsp_gp2x_gpiodev, &value, 4);
	340	if(value & 0x02)
	341	value \|= 0x05;
	342	if(value & 0x08)
	343	value \|= 0x14;
	344	if(value & 0x20)
	345	value \|= 0x50;
	346	if(value & 0x80)
	347	value \|= 0x41;
	348	return value;
	349	#else
	350	u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);
	351
	352	if(value == 0xFD)
	353	value = 0xFA;
	354	if(value == 0xF7)
	355	value = 0xEB;
	356	if(value == 0xDF)
	357	value = 0xAF;
	358	if(value == 0x7F)
	359	value = 0xBE;
	360
	361	return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) \| value \|
	362	(gpsp_gp2x_memregs[0x1186 >> 1] << 16));
	363	#endif
	364	}
	365
43c24b30	366	u32 gpsp_plat_buttons_to_cursor(u32 buttons)
	367	{
	368	gui_action_type new_button = CURSOR_NONE;
	369
	370	if(buttons & GP2X_A)
	371	new_button = CURSOR_BACK;
	372
	373	if(buttons & GP2X_X)
	374	new_button = CURSOR_EXIT;
	375
	376	if(buttons & GP2X_B)
	377	new_button = CURSOR_SELECT;
	378
	379	if(buttons & GP2X_UP)
	380	new_button = CURSOR_UP;
	381
	382	if(buttons & GP2X_DOWN)
	383	new_button = CURSOR_DOWN;
	384
	385	if(buttons & GP2X_LEFT)
	386	new_button = CURSOR_LEFT;
	387
	388	if(buttons & GP2X_RIGHT)
	389	new_button = CURSOR_RIGHT;
	390
	391	if(buttons & GP2X_L)
	392	new_button = CURSOR_L;
	393
	394	if(buttons & GP2X_R)
	395	new_button = CURSOR_R;
	396
	397	return new_button;
	398	}
	399
638cc626	400	// Fout = (m * Fin) / (p * 2^s)
4742480d	401	void set_FCLK(u32 MHZ)
4742480d	402	{
638cc626	403	u32 v;
	404	u32 mdiv, pdiv, sdiv = 0;
	405	#ifdef WIZ_BUILD
	406	#define SYS_CLK_FREQ 27
	407	// m = MDIV, p = PDIV, s = SDIV
	408	pdiv = 9;
	409	mdiv = (MHZ * pdiv) / SYS_CLK_FREQ;
	410	mdiv &= 0x3ff;
	411	v = (pdiv<<18) \| (mdiv<<8) \| sdiv;
	412
	413	gpsp_gp2x_memregl[0xf004>>2] = v;
	414	gpsp_gp2x_memregl[0xf07c>>2] \|= 0x8000;
5a01fba6	415	while (gpsp_gp2x_memregl[0xf07c>>2] & 0x8000)
5a01fba6	416	;
638cc626	417	#else
	418	#define SYS_CLK_FREQ 7372800
	419	// m = MDIV + 8, p = PDIV + 2, s = SDIV
	420	pdiv = 3;
	421	mdiv = (MHZ * pdiv * 1000000) / SYS_CLK_FREQ;
	422	mdiv &= 0xff;
	423	v = ((mdiv-8)<<8) \| ((pdiv-2)<<2) \| sdiv;
	424	gpsp_gp2x_memregs[0x910>>1] = v;
4742480d	425	#endif
638cc626	426	}
4742480d	427