2823a4c8 |
1 | /* Parts used from cpuctrl */ |
2 | /* cpuctrl for GP2X |
3 | Copyright (C) 2005 Hermes/PS2Reality |
4 | |
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. |
9 | |
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. |
14 | |
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 |
18 | |
19 | */ |
20 | |
21 | |
638cc626 |
22 | #define _BSD_SOURCE |
23 | #define _GNU_SOURCE |
2823a4c8 |
24 | #include <sys/mman.h> |
25 | #include <sys/ioctl.h> |
26 | #include <sys/soundcard.h> |
638cc626 |
27 | #include <sys/types.h> |
28 | #include <unistd.h> |
2823a4c8 |
29 | #include "../common.h" |
30 | #include "gp2x.h" |
4742480d |
31 | #include "warm.h" |
2823a4c8 |
32 | |
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33 | u32 gp2x_audio_volume = 74/2; |
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34 | u32 gpsp_gp2x_dev_audio = 0; |
35 | u32 gpsp_gp2x_dev = 0; |
4742480d |
36 | u32 gpsp_gp2x_gpiodev = 0; |
2823a4c8 |
37 | |
4742480d |
38 | static volatile u16 *gpsp_gp2x_memregs; |
39 | static volatile u32 *gpsp_gp2x_memregl; |
2823a4c8 |
40 | |
4cdfc0bc |
41 | #ifdef WIZ_BUILD |
42 | #include <linux/fb.h> |
43 | void *gpsp_gp2x_screen; |
44 | static u32 fb_paddr[3]; |
45 | static void *fb_vaddr[3]; |
46 | static u32 fb_work_buf; |
47 | const int fb_buf_count = 3; |
48 | static int fb_buf_use = 3; |
49 | |
50 | static void fb_video_init() |
51 | { |
52 | struct fb_fix_screeninfo fbfix; |
53 | int i, ret; |
54 | int fbdev; |
55 | |
56 | fbdev = open("/dev/fb0", O_RDWR); |
57 | if (fbdev < 0) { |
58 | perror("can't open fbdev"); |
59 | exit(1); |
60 | } |
61 | |
62 | ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix); |
63 | if (ret == -1) |
64 | { |
65 | perror("ioctl(fbdev) failed"); |
66 | exit(1); |
67 | } |
68 | |
69 | printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start); |
70 | fb_paddr[0] = fbfix.smem_start; |
71 | close(fbdev); |
72 | |
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) |
76 | { |
77 | perror("mmap(fb_vaddr) failed"); |
78 | exit(1); |
79 | } |
80 | memset(fb_vaddr[0], 0, 320*240*2*fb_buf_count); |
81 | |
82 | printf(" %p -> %08x\n", fb_vaddr[0], fb_paddr[0]); |
83 | for (i = 1; i < fb_buf_count; i++) |
84 | { |
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]); |
88 | } |
89 | fb_work_buf = 0; |
90 | fb_buf_use = fb_buf_count; |
91 | |
92 | pollux_video_flip(); |
93 | warm_change_cb_upper(WCB_C_BIT|WCB_B_BIT, 1); |
94 | } |
95 | |
96 | void pollux_video_flip() |
97 | { |
98 | warm_cache_op_all(WOP_D_CLEAN); |
99 | gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[fb_work_buf]; |
100 | gpsp_gp2x_memregl[0x4058>>2] |= 0x10; |
101 | fb_work_buf++; |
102 | if (fb_work_buf >= fb_buf_use) |
103 | fb_work_buf = 0; |
104 | gpsp_gp2x_screen = fb_vaddr[fb_work_buf]; |
105 | } |
106 | |
107 | void fb_use_buffers(int count) |
108 | { |
109 | if (count < 1) |
110 | count = 1; |
111 | else if (count > fb_buf_count) |
112 | count = fb_buf_count; |
113 | fb_buf_use = count; |
114 | } |
115 | |
116 | static void fb_video_exit() |
117 | { |
118 | /* switch to default fb mem */ |
119 | gpsp_gp2x_memregl[0x406C>>2] = fb_paddr[0]; |
120 | gpsp_gp2x_memregl[0x4058>>2] |= 0x10; |
121 | } |
122 | #endif |
123 | |
4742480d |
124 | void gp2x_init() |
2823a4c8 |
125 | { |
638cc626 |
126 | FILE *f; |
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127 | gpsp_gp2x_dev = open("/dev/mem", O_RDWR); |
128 | gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR); |
129 | gpsp_gp2x_memregl = |
130 | (unsigned long *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, |
131 | gpsp_gp2x_dev, 0xc0000000); |
132 | gpsp_gp2x_memregs = (unsigned short *)gpsp_gp2x_memregl; |
638cc626 |
133 | warm_init(); |
4742480d |
134 | #ifdef WIZ_BUILD |
135 | gpsp_gp2x_gpiodev = open("/dev/GPIO", O_RDONLY); |
4cdfc0bc |
136 | fb_video_init(); |
137 | #endif |
2823a4c8 |
138 | |
638cc626 |
139 | f = fopen("romdir.txt", "r"); |
140 | if (f != NULL) |
141 | { |
142 | char buff[256]; |
143 | char *s = fgets(buff, sizeof(buff) - 1, f); |
144 | if (s) |
145 | { |
146 | int r = strlen(s); |
147 | while (r > 0 && isspace(buff[r-1])) |
148 | buff[--r] = 0; |
149 | chdir(buff); |
150 | } |
151 | fclose(f); |
152 | } |
153 | |
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154 | gp2x_sound_volume(1); |
155 | } |
156 | |
638cc626 |
157 | #include <errno.h> |
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158 | void gp2x_quit() |
159 | { |
638cc626 |
160 | char buff[256]; |
161 | FILE *f; |
162 | |
163 | getcwd(buff, sizeof(buff)); |
164 | chdir(main_path); |
165 | f = fopen("romdir.txt", "r+"); |
166 | if (f != NULL) |
167 | { |
168 | fprintf(f, "%s", buff); |
169 | fclose(f); |
170 | truncate("romdir.txt", strlen(buff)); |
171 | sync(); |
172 | } |
173 | |
174 | warm_finish(); |
4742480d |
175 | #ifdef WIZ_BUILD |
176 | close(gpsp_gp2x_gpiodev); |
4cdfc0bc |
177 | fb_video_exit(); |
4742480d |
178 | #endif |
4cdfc0bc |
179 | munmap((void *)gpsp_gp2x_memregl, 0x10000); |
180 | close(gpsp_gp2x_dev_audio); |
181 | close(gpsp_gp2x_dev); |
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182 | |
638cc626 |
183 | fcloseall(); |
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184 | //chdir("/usr/gp2x"); |
185 | //execl("gp2xmenu", "gp2xmenu", NULL); |
186 | exit(0); |
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187 | } |
188 | |
189 | void gp2x_sound_volume(u32 volume_up) |
190 | { |
191 | u32 volume; |
192 | if((volume_up == 0) && (gp2x_audio_volume > 0)) |
193 | gp2x_audio_volume--; |
194 | |
195 | if((volume_up != 0) && (gp2x_audio_volume < 100)) |
196 | gp2x_audio_volume++; |
197 | |
198 | volume = (gp2x_audio_volume * 0x50) / 100; |
199 | volume = (gp2x_audio_volume << 8) | gp2x_audio_volume; |
200 | ioctl(gpsp_gp2x_dev_audio, SOUND_MIXER_WRITE_PCM, &volume); |
201 | } |
202 | |
4742480d |
203 | u32 gpsp_gp2x_joystick_read(void) |
204 | { |
205 | #ifdef WIZ_BUILD |
206 | u32 value = 0; |
207 | read(gpsp_gp2x_gpiodev, &value, 4); |
208 | if(value & 0x02) |
209 | value |= 0x05; |
210 | if(value & 0x08) |
211 | value |= 0x14; |
212 | if(value & 0x20) |
213 | value |= 0x50; |
214 | if(value & 0x80) |
215 | value |= 0x41; |
216 | return value; |
217 | #else |
218 | u32 value = (gpsp_gp2x_memregs[0x1198 >> 1] & 0x00FF); |
219 | |
220 | if(value == 0xFD) |
221 | value = 0xFA; |
222 | if(value == 0xF7) |
223 | value = 0xEB; |
224 | if(value == 0xDF) |
225 | value = 0xAF; |
226 | if(value == 0x7F) |
227 | value = 0xBE; |
228 | |
229 | return ~((gpsp_gp2x_memregs[0x1184 >> 1] & 0xFF00) | value | |
230 | (gpsp_gp2x_memregs[0x1186 >> 1] << 16)); |
231 | #endif |
232 | } |
233 | |
638cc626 |
234 | // Fout = (m * Fin) / (p * 2^s) |
4742480d |
235 | void set_FCLK(u32 MHZ) |
236 | { |
638cc626 |
237 | u32 v; |
238 | u32 mdiv, pdiv, sdiv = 0; |
239 | #ifdef WIZ_BUILD |
240 | #define SYS_CLK_FREQ 27 |
241 | // m = MDIV, p = PDIV, s = SDIV |
242 | pdiv = 9; |
243 | mdiv = (MHZ * pdiv) / SYS_CLK_FREQ; |
244 | mdiv &= 0x3ff; |
245 | v = (pdiv<<18) | (mdiv<<8) | sdiv; |
246 | |
247 | gpsp_gp2x_memregl[0xf004>>2] = v; |
248 | gpsp_gp2x_memregl[0xf07c>>2] |= 0x8000; |
249 | #else |
250 | #define SYS_CLK_FREQ 7372800 |
251 | // m = MDIV + 8, p = PDIV + 2, s = SDIV |
252 | pdiv = 3; |
253 | mdiv = (MHZ * pdiv * 1000000) / SYS_CLK_FREQ; |
254 | mdiv &= 0xff; |
255 | v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv; |
256 | gpsp_gp2x_memregs[0x910>>1] = v; |
4742480d |
257 | #endif |
638cc626 |
258 | } |
4742480d |
259 | |