232 lines
5.1 KiB
C
232 lines
5.1 KiB
C
/* Parts used from cpuctrl */
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/* cpuctrl for GP2X
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Copyright (C) 2005 Hermes/PS2Reality
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <sys/soundcard.h>
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#include "../common.h"
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#include "gp2x.h"
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#include "warm.h"
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extern int main_cpuspeed(int argc, char *argv[]);
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extern SDL_Surface* screen;
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u32 gp2x_audio_volume = 74/2;
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u32 gpsp_gp2x_dev_audio = 0;
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u32 gpsp_gp2x_dev = 0;
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u32 gpsp_gp2x_gpiodev = 0;
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static volatile u16 *gpsp_gp2x_memregs;
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static volatile u32 *gpsp_gp2x_memregl;
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unsigned short *gp2x_memregs;
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s32 gp2x_load_mmuhack()
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{
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s32 mmufd = open("/dev/mmuhack", O_RDWR);
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if(mmufd < 0)
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{
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system("/sbin/insmod mmuhack.o");
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mmufd = open("/dev/mmuhack", O_RDWR);
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}
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if(mmufd < 0)
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return -1;
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close(mmufd);
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return 0;
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}
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#ifdef WIZ_BUILD
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#include <linux/fb.h>
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void *gpsp_gp2x_screen;
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static u32 fb_paddr[3];
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static void *fb_vaddr[3];
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static u32 fb_work_buf;
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const int fb_buf_count = 3;
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static int fb_buf_use = 3;
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static void fb_video_init()
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{
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struct fb_fix_screeninfo fbfix;
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int i, ret;
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int fbdev;
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fbdev = open("/dev/fb0", O_RDWR);
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if (fbdev < 0) {
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perror("can't open fbdev");
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exit(1);
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}
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ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
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if (ret == -1)
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{
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perror("ioctl(fbdev) failed");
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exit(1);
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}
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printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
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fb_paddr[0] = fbfix.smem_start;
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close(fbdev);
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fb_vaddr[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
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MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
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if (fb_vaddr[0] == MAP_FAILED)
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{
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perror("mmap(fb_vaddr) failed");
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exit(1);
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}
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memset(fb_vaddr[0], 0, 320*240*2*fb_buf_count);
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printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
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for (i = 1; i < fb_buf_count; i++)
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{
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fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
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fb_vaddr[i] = (char *)fb_vaddr[i-1] + 320*240*2;
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printf(" %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
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}
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fb_work_buf = 0;
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fb_buf_use = fb_buf_count;
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pollux_video_flip();
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warm_change_cb_upper(WCB_C_BIT|WCB_B_BIT, 1);
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}
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void pollux_video_flip()
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{
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warm_cache_op_all(WOP_D_CLEAN);
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gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
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gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
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fb_work_buf++;
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if (fb_work_buf >= fb_buf_use)
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fb_work_buf = 0;
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gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
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}
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void fb_use_buffers(int count)
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{
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if (count < 1)
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count = 1;
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else if (count > fb_buf_count)
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count = fb_buf_count;
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fb_buf_use = count;
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}
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static void fb_video_exit()
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{
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/* switch to default fb mem */
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gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
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gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
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}
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#endif
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void gp2x_init()
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{
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gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
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gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
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gpsp_gp2x_memregl =
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(unsigned long *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED,
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gpsp_gp2x_dev, 0xc0000000);
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gpsp_gp2x_memregs = (unsigned short *)gpsp_gp2x_memregl;
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#ifdef WIZ_BUILD
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gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
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warm_init();
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fb_video_init();
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#endif
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// clear_screen(0);
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// main_cpuspeed(0, NULL);
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gp2x_memregs = (void *)gpsp_gp2x_memregs;
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cpuctrl_init();
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gp2x_sound_volume(1);
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}
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void gp2x_quit()
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{
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#ifdef WIZ_BUILD
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close(gpsp_gp2x_gpiodev);
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fb_video_exit();
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#endif
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munmap((void *)gpsp_gp2x_memregl, 0x10000);
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close(gpsp_gp2x_dev_audio);
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close(gpsp_gp2x_dev);
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//chdir("/usr/gp2x");
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//execl("gp2xmenu", "gp2xmenu", NULL);
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exit(0);
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}
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void gp2x_sound_volume(u32 volume_up)
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{
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u32 volume;
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if((volume_up == 0) && (gp2x_audio_volume > 0))
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gp2x_audio_volume--;
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if((volume_up != 0) && (gp2x_audio_volume < 100))
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gp2x_audio_volume++;
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volume = (gp2x_audio_volume * 0x50) / 100;
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volume = (gp2x_audio_volume << 8) | gp2x_audio_volume;
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ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
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}
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u32 gpsp_gp2x_joystick_read(void)
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{
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#ifdef WIZ_BUILD
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u32 value = 0;
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read(gpsp_gp2x_gpiodev, &value, 4);
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if(value & 0x02)
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value |= 0x05;
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if(value & 0x08)
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value |= 0x14;
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if(value & 0x20)
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value |= 0x50;
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if(value & 0x80)
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value |= 0x41;
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return value;
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#else
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u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);
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if(value == 0xFD)
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value = 0xFA;
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if(value == 0xF7)
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value = 0xEB;
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if(value == 0xDF)
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value = 0xAF;
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if(value == 0x7F)
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value = 0xBE;
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return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) | value |
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(gpsp_gp2x_memregs[0x1186 >> 1] << 16));
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#endif
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}
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#ifdef WIZ_BUILD
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void cpuctrl_init(void)
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{
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}
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void set_FCLK(u32 MHZ)
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{
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}
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#endif
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