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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
4 | #include <math.h> |
5 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
7 | #include <fcntl.h> |
8 | #include <sys/mman.h> |
9 | #include <unistd.h> |
10 | #include <sys/ioctl.h> |
11 | #include <linux/fb.h> |
12 | |
13 | #include "soc.h" |
14 | #include "plat_gp2x.h" |
15 | #include "../common/emu.h" |
16 | #include "../common/arm_utils.h" |
17 | #include "pollux_set.h" |
18 | |
19 | static volatile unsigned short *memregs; |
20 | static volatile unsigned long *memregl; |
21 | static int memdev = -1; |
22 | |
23 | extern void *gp2x_screens[4]; |
24 | |
25 | #define fb_buf_count 4 |
26 | static unsigned int fb_paddr[fb_buf_count]; |
27 | static int fb_work_buf; |
28 | static int fbdev = -1; |
29 | |
30 | |
31 | /* video stuff */ |
32 | static void pollux_video_flip(int buf_count) |
33 | { |
34 | memregl[0x406C>>2] = fb_paddr[fb_work_buf]; |
35 | memregl[0x4058>>2] |= 0x10; |
36 | fb_work_buf++; |
37 | if (fb_work_buf >= buf_count) |
38 | fb_work_buf = 0; |
39 | g_screen_ptr = gp2x_screens[fb_work_buf]; |
40 | } |
41 | |
42 | static void gp2x_video_flip_(void) |
43 | { |
44 | pollux_video_flip(fb_buf_count); |
45 | } |
46 | |
47 | /* doulblebuffered flip */ |
48 | static void gp2x_video_flip2_(void) |
49 | { |
50 | pollux_video_flip(2); |
51 | } |
52 | |
53 | static void gp2x_video_changemode_ll_(int bpp) |
54 | { |
55 | int code = 0, bytes = 2; |
56 | unsigned int r; |
57 | switch (bpp) |
58 | { |
59 | case 8: |
60 | code = 0x443a; |
61 | bytes = 1; |
62 | break; |
63 | |
64 | case 15: |
65 | case 16: |
66 | code = 0x4432; |
67 | bytes = 2; |
68 | break; |
69 | |
70 | default: |
71 | printf("unhandled bpp request: %d\n", bpp); |
72 | return; |
73 | } |
74 | |
75 | memregl[0x405c>>2] = bytes; |
76 | memregl[0x4060>>2] = bytes * 320; |
77 | |
78 | r = memregl[0x4058>>2]; |
79 | r = (r & 0xffff) | (code << 16) | 0x10; |
80 | memregl[0x4058>>2] = r; |
81 | } |
82 | |
83 | static void gp2x_video_setpalette_(int *pal, int len) |
84 | { |
85 | /* pollux palette is 16bpp only.. */ |
86 | int i; |
87 | for (i = 0; i < len; i++) |
88 | { |
89 | int c = pal[i]; |
90 | c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f); |
91 | memregl[0x4070>>2] = (i << 24) | c; |
92 | } |
93 | } |
94 | |
95 | static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H) |
96 | { |
97 | /* maybe a job for 3d hardware? */ |
98 | } |
99 | |
100 | static void gp2x_video_wait_vsync_(void) |
101 | { |
102 | while (!(memregl[0x308c>>2] & (1 << 10))); |
103 | spend_cycles(128); |
104 | memregl[0x308c>>2] |= 1 << 10; |
105 | } |
106 | |
107 | /* CPU clock */ |
108 | static void gp2x_set_cpuclk_(unsigned int mhz) |
109 | { |
110 | char buff[24]; |
111 | snprintf(buff, sizeof(buff), "cpuclk=%u", mhz); |
112 | pollux_set(memregs, buff); |
113 | } |
114 | |
115 | /* misc */ |
116 | static void pollux_set_fromenv(const char *env_var) |
117 | { |
118 | const char *set_string; |
119 | set_string = getenv(env_var); |
120 | if (set_string) |
121 | pollux_set(memregs, set_string); |
122 | else |
123 | printf("env var %s not defined.\n", env_var); |
124 | } |
125 | |
126 | /* RAM timings */ |
127 | static unsigned short memtimex[2]; |
128 | |
129 | static void set_ram_timings_(void) |
130 | { |
131 | pollux_set_fromenv("POLLUX_RAM_TIMINGS"); |
132 | } |
133 | |
134 | static void unset_ram_timings_(void) |
135 | { |
136 | int i; |
137 | |
138 | memregs[0x14802>>1] = memtimex[0]; |
139 | memregs[0x14804>>1] = memtimex[1] | 0x8000; |
140 | |
141 | for (i = 0; i < 0x100000; i++) |
142 | if (!(memregs[0x14804>>1] & 0x8000)) |
143 | break; |
144 | |
145 | printf("RAM timings reset to startup values.\n"); |
146 | } |
147 | |
148 | /* LCD refresh */ |
149 | static void set_lcd_custom_rate_(int is_pal) |
150 | { |
151 | char buff[32]; |
152 | |
153 | snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", is_pal ? "PAL" : "NTSC"); |
154 | pollux_set_fromenv(buff); |
155 | } |
156 | |
157 | static void unset_lcd_custom_rate_(void) |
158 | { |
159 | } |
160 | |
161 | static void set_lcd_gamma_(int g100, int A_SNs_curve) |
162 | { |
163 | /* hm, the LCD possibly can do it (but not POLLUX) */ |
164 | } |
d572cbad |
165 | |
166 | void pollux_init(void) |
167 | { |
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168 | struct fb_fix_screeninfo fbfix; |
169 | int i, ret; |
170 | |
171 | memdev = open("/dev/mem", O_RDWR); |
172 | if (memdev == -1) { |
173 | perror("open(/dev/mem) failed"); |
174 | exit(1); |
175 | } |
176 | |
177 | memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
178 | if (memregs == MAP_FAILED) { |
179 | perror("mmap(memregs) failed"); |
180 | exit(1); |
181 | } |
182 | memregl = (volatile void *)memregs; |
183 | |
184 | fbdev = open("/dev/fb0", O_RDWR); |
185 | if (fbdev < 0) { |
186 | perror("can't open fbdev"); |
187 | exit(1); |
188 | } |
189 | |
190 | ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix); |
191 | if (ret == -1) { |
192 | perror("ioctl(fbdev) failed"); |
193 | exit(1); |
194 | } |
195 | |
196 | printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start); |
197 | fb_paddr[0] = fbfix.smem_start; |
198 | |
199 | gp2x_screens[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE, |
200 | MAP_SHARED, memdev, fb_paddr[0]); |
201 | if (gp2x_screens[0] == MAP_FAILED) |
202 | { |
203 | perror("mmap(gp2x_screens) failed"); |
204 | exit(1); |
205 | } |
206 | memset(gp2x_screens[0], 0, 320*240*2*fb_buf_count); |
207 | |
208 | printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]); |
209 | for (i = 1; i < fb_buf_count; i++) |
210 | { |
211 | fb_paddr[i] = fb_paddr[i-1] + 320*240*2; |
212 | gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2; |
213 | printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]); |
214 | } |
215 | fb_work_buf = 0; |
216 | g_screen_ptr = gp2x_screens[0]; |
217 | |
218 | memtimex[0] = memregs[0x14802>>1]; |
219 | memtimex[1] = memregs[0x14804>>1]; |
220 | |
221 | gp2x_video_flip = gp2x_video_flip_; |
222 | gp2x_video_flip2 = gp2x_video_flip2_; |
223 | gp2x_video_changemode_ll = gp2x_video_changemode_ll_; |
224 | gp2x_video_setpalette = gp2x_video_setpalette_; |
225 | gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_; |
226 | gp2x_video_wait_vsync = gp2x_video_wait_vsync_; |
227 | |
228 | gp2x_set_cpuclk = gp2x_set_cpuclk_; |
229 | |
230 | set_lcd_custom_rate = set_lcd_custom_rate_; |
231 | unset_lcd_custom_rate = unset_lcd_custom_rate_; |
232 | set_lcd_gamma = set_lcd_gamma_; |
233 | |
234 | set_ram_timings = set_ram_timings_; |
235 | unset_ram_timings = unset_ram_timings_; |
d572cbad |
236 | } |
237 | |
238 | void pollux_finish(void) |
239 | { |
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240 | /* switch to default fb mem, turn portrait off */ |
241 | memregl[0x406C>>2] = fb_paddr[0]; |
242 | memregl[0x4058>>2] |= 0x10; |
243 | // wiz_lcd_set_portrait(0); |
244 | close(fbdev); |
245 | |
246 | munmap((void *)memregs, 0x20000); |
247 | close(memdev); |
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248 | } |
249 | |