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/* Parts used from cpuctrl */
/* cpuctrl for GP2X
Copyright (C) 2005 Hermes/PS2Reality
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
*/
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
#include "../common.h"
#include "gp2x.h"
#include "warm.h"
extern int main_cpuspeed(int argc, char *argv[]);
extern SDL_Surface* screen;
u32 gp2x_audio_volume = 74/2;
u32 gpsp_gp2x_dev_audio = 0;
u32 gpsp_gp2x_dev = 0;
u32 gpsp_gp2x_gpiodev = 0;
static volatile u16 *gpsp_gp2x_memregs;
static volatile u32 *gpsp_gp2x_memregl;
unsigned short *gp2x_memregs;
static volatile u16 *MEM_REG;
s32 gp2x_load_mmuhack()
{
s32 mmufd = open("/dev/mmuhack", O_RDWR);
if(mmufd < 0)
{
system("/sbin/insmod mmuhack.o");
mmufd = open("/dev/mmuhack", O_RDWR);
}
if(mmufd < 0)
return -1;
close(mmufd);
return 0;
}
void gp2x_init()
{
gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
gpsp_gp2x_memregl =
(unsigned long *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED,
gpsp_gp2x_dev, 0xc0000000);
gpsp_gp2x_memregs = (unsigned short *)gpsp_gp2x_memregl;
#ifdef WIZ_BUILD
gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
#endif
warm_init();
clear_screen(0);
// main_cpuspeed(0, NULL);
gp2x_memregs = (void *)gpsp_gp2x_memregs;
cpuctrl_init();
gp2x_sound_volume(1);
}
void gp2x_quit()
{
munmap((void *)gpsp_gp2x_memregl, 0x10000);
close(gpsp_gp2x_dev_audio);
close(gpsp_gp2x_dev);
#ifdef WIZ_BUILD
close(gpsp_gp2x_gpiodev);
#endif
//chdir("/usr/gp2x");
//execl("gp2xmenu", "gp2xmenu", NULL);
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_gp2x_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
}
#ifdef WIZ_BUILD
void cpuctrl_init(void)
{
}
void set_FCLK(u32 MHZ)
{
}
#endif
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