2 Parts used from cpuctrl, Copyright (C) 2005 Hermes/PS2Reality
3 Portions Copyright (C) 2009 notaz
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 "../common.h"
25 #include <sys/ioctl.h>
26 #include <sys/soundcard.h>
27 #include <sys/types.h>
32 #include "pollux_dpc_set.h"
34 u32 gp2x_audio_volume = 74/2;
35 u32 gpsp_gp2x_dev_audio = 0;
36 u32 gpsp_gp2x_dev = 0;
37 u32 gpsp_gp2x_gpiodev = 0;
39 static volatile u16 *gpsp_gp2x_memregs;
40 static volatile u32 *gpsp_gp2x_memregl;
44 void *gpsp_gp2x_screen;
45 #define fb_buf_count 4
46 static u32 fb_paddr[fb_buf_count];
47 static void *fb_vaddr[fb_buf_count];
48 static u32 fb_work_buf;
49 static int fb_buf_use;
52 static void fb_video_init()
54 struct fb_fix_screeninfo fbfix;
57 fbdev = open("/dev/fb0", O_RDWR);
59 perror("can't open fbdev");
63 ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
66 perror("ioctl(fbdev) failed");
70 printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
71 fb_paddr[0] = fbfix.smem_start;
73 fb_vaddr[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
74 MAP_SHARED, gpsp_gp2x_dev, fb_paddr[0]);
75 if (fb_vaddr[0] == MAP_FAILED)
77 perror("mmap(fb_vaddr) failed");
80 memset(fb_vaddr[0], 0, 320*240*2*fb_buf_count);
82 printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]);
83 for (i = 1; i < fb_buf_count; i++)
85 fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
86 fb_vaddr[i] = (char *)fb_vaddr[i-1] + 320*240*2;
87 printf(" %p -> %08x\n", fb_vaddr[i], fb_paddr[i]);
90 fb_buf_use = fb_buf_count;
93 warm_change_cb_upper(WCB_C_BIT|WCB_B_BIT, 1);
96 void pollux_video_flip()
98 gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf];
99 gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
101 if (fb_work_buf >= fb_buf_use)
103 gpsp_gp2x_screen = fb_vaddr[fb_work_buf];
106 void fb_use_buffers(int count)
110 else if (count > fb_buf_count)
111 count = fb_buf_count;
113 memset(fb_vaddr[0], 0, 320*240*2*count);
116 void wiz_lcd_set_portrait(int y)
118 static int old_y = -1;
119 int cmd[2] = { 0, 0 };
124 ioctl(fbdev, _IOW('D', 90, int[2]), cmd);
125 gpsp_gp2x_memregl[0x4004>>2] = y ? 0x013f00ef : 0x00ef013f;
126 gpsp_gp2x_memregl[0x4000>>2] |= 1 << 3;
129 /* the above ioctl resets LCD timings, so set them here */
130 pollux_dpc_set(gpsp_gp2x_memregs, getenv("pollux_dpc_set"));
133 static void fb_video_exit()
135 /* switch to default fb mem, turn portrait off */
136 gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0];
137 gpsp_gp2x_memregl[0x4058>>2] |= 0x10;
138 wiz_lcd_set_portrait(0);
142 static int wiz_gamepak_fd = -1;
143 static u32 wiz_gamepak_size;
145 static void wiz_gamepak_cleanup()
147 if (wiz_gamepak_size)
148 munmap(gamepak_rom, wiz_gamepak_size);
149 if (wiz_gamepak_fd >= 0)
150 close(wiz_gamepak_fd);
152 wiz_gamepak_size = 0;
156 u32 wiz_load_gamepak(char *name)
158 char *dot_position = strrchr(name, '.');
161 if (!strcasecmp(dot_position, ".zip"))
163 if (wiz_gamepak_fd >= 0)
165 wiz_gamepak_cleanup();
166 printf("switching to ROM malloc\n");
167 init_gamepak_buffer();
169 return load_file_zip(name);
172 if (wiz_gamepak_fd < 0)
174 extern void *gamepak_memory_map;
176 free(gamepak_memory_map);
177 gamepak_memory_map = NULL;
178 printf("switching to ROM mmap\n");
181 wiz_gamepak_cleanup();
183 wiz_gamepak_fd = open(name, O_RDONLY|O_NOATIME, S_IRUSR);
184 if (wiz_gamepak_fd < 0)
186 perror("wiz_load_gamepak: open failed");
190 ret = lseek(wiz_gamepak_fd, 0, SEEK_END);
191 wiz_gamepak_size = gamepak_ram_buffer_size = ret;
193 gamepak_rom = mmap(0, ret, PROT_READ, MAP_SHARED, wiz_gamepak_fd, 0);
194 if (gamepak_rom == MAP_FAILED)
196 perror("wiz_load_gamepak: mmap failed");
205 static int get_romdir(char *buff, size_t size)
211 f = fopen("romdir.txt", "r");
215 s = fgets(buff, size, f);
219 while (r > 0 && isspace(buff[r-1]))
231 gpsp_gp2x_dev = open("/dev/mem", O_RDWR);
232 gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
233 gpsp_gp2x_memregl = (u32 *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED,
234 gpsp_gp2x_dev, 0xc0000000);
235 gpsp_gp2x_memregs = (u16 *)gpsp_gp2x_memregl;
238 gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY);
242 if (get_romdir(buff, sizeof(buff)) > 0)
245 gp2x_sound_volume(1);
250 char buff1[256], buff2[256];
252 getcwd(buff1, sizeof(buff1));
254 if (get_romdir(buff2, sizeof(buff2)) >= 0 &&
255 strcmp(buff1, buff2) != 0)
257 FILE *f = fopen("romdir.txt", "w");
260 printf("writing romdir: %s\n", buff1);
261 fprintf(f, "%s", buff1);
268 close(gpsp_gp2x_gpiodev);
270 wiz_gamepak_cleanup();
272 munmap((void *)gpsp_gp2x_memregl, 0x10000);
273 close(gpsp_gp2x_dev_audio);
274 close(gpsp_gp2x_dev);
281 void gp2x_sound_volume(u32 volume_up)
284 if((volume_up == 0) && (gp2x_audio_volume > 0))
287 if((volume_up != 0) && (gp2x_audio_volume < 100))
290 volume = (gp2x_audio_volume * 0x50) / 100;
291 volume = (gp2x_audio_volume << 8) | gp2x_audio_volume;
292 ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume);
295 u32 gpsp_gp2x_joystick_read(void)
299 read(gpsp_gp2x_gpiodev, &value, 4);
310 u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF);
321 return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) | value |
322 (gpsp_gp2x_memregs[0x1186 >> 1] << 16));
326 // Fout = (m * Fin) / (p * 2^s)
327 void set_FCLK(u32 MHZ)
330 u32 mdiv, pdiv, sdiv = 0;
332 #define SYS_CLK_FREQ 27
333 // m = MDIV, p = PDIV, s = SDIV
335 mdiv = (MHZ * pdiv) / SYS_CLK_FREQ;
337 v = (pdiv<<18) | (mdiv<<8) | sdiv;
339 gpsp_gp2x_memregl[0xf004>>2] = v;
340 gpsp_gp2x_memregl[0xf07c>>2] |= 0x8000;
341 while (gpsp_gp2x_memregl[0xf07c>>2] & 0x8000)
344 #define SYS_CLK_FREQ 7372800
345 // m = MDIV + 8, p = PDIV + 2, s = SDIV
347 mdiv = (MHZ * pdiv * 1000000) / SYS_CLK_FREQ;
349 v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv;
350 gpsp_gp2x_memregs[0x910>>1] = v;