1 /* Parts used from cpuctrl */
3 Copyright (C) 2005 Hermes/PS2Reality
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.
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.
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
23 #include <sys/ioctl.h>
24 #include <sys/soundcard.h>
25 #include "../common.h"
29 extern int main_cpuspeed(int argc, char *argv[]);
30 extern SDL_Surface* screen;
32 u32 gp2x_audio_volume = 74/2;
33 u32 gpsp_gp2x_dev_audio = 0;
34 u32 gpsp_gp2x_dev = 0;
35 u32 gpsp_gp2x_gpiodev = 0;
37 static volatile u16 *gpsp_gp2x_memregs;
38 static volatile u32 *gpsp_gp2x_memregl;
39 unsigned short *gp2x_memregs;
41 static volatile u16 *MEM_REG;
43 s32 gp2x_load_mmuhack()
45 s32 mmufd = open("/dev/mmuhack", O_RDWR);
49 system("/sbin/insmod mmuhack.o");
50 mmufd = open("/dev/mmuhack", O_RDWR);
62 gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
63 gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
65 (unsigned long *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED,
66 gpsp_gp2x_dev, 0xc0000000);
67 gpsp_gp2x_memregs = (unsigned short *)gpsp_gp2x_memregl;
69 gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
74 // main_cpuspeed(0, NULL);
75 gp2x_memregs = (void *)gpsp_gp2x_memregs;
82 munmap((void *)gpsp_gp2x_memregl, 0x10000);
83 close(gpsp_gp2x_dev_audio);
86 close(gpsp_gp2x_gpiodev);
90 //execl("gp2xmenu", "gp2xmenu", NULL);
94 void gp2x_sound_volume(u32 volume_up)
97 if((volume_up == 0) && (gp2x_audio_volume > 0))
100 if((volume_up != 0) && (gp2x_audio_volume < 100))
103 volume = (gp2x_audio_volume * 0x50) / 100;
104 volume = (gp2x_audio_volume << 8) | gp2x_audio_volume;
105 ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
108 u32 gpsp_gp2x_joystick_read(void)
112 read(gpsp_gp2x_gpiodev, &value, 4);
123 u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);
134 return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) | value |
135 (gpsp_gp2x_memregs[0x1186 >> 1] << 16));
140 void cpuctrl_init(void)
144 void set_FCLK(u32 MHZ)