1 files changed, 93 insertions, 0 deletions
diff --git a/gp2x/gp2x.c b/gp2x/gp2x.c
new file mode 100644
index 0000000..29ee5f4
--- /dev/null
+++ b/gp2x/gp2x.c
@@ -0,0 +1,93 @@
+/*  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"
+
+extern int main_cpuspeed(int argc, char *argv[]);
+extern SDL_Surface* screen;
+
+u32 gp2x_audio_volume = 74;
+u32 gpsp_gp2x_dev_audio = 0;
+u32 gpsp_gp2x_dev = 0;
+
+volatile u16 *gpsp_gp2x_memregs;
+volatile u32 *gpsp_gp2x_memregl;
+
+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_overclock()
+{
+  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;
+
+  clear_screen(0);
+  main_cpuspeed(0, NULL);
+  gp2x_sound_volume(1);
+}
+
+void gp2x_quit()
+{
+  munmap((void *)gpsp_gp2x_memregl, 0x10000);
+  close(gpsp_gp2x_dev_audio);
+  close(gpsp_gp2x_dev);
+  chdir("/usr/gp2x");
+  execl("gp2xmenu", "gp2xmenu", NULL);
+}
+
+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);
+}
+