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1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2009,2013 |
3 | * |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
8 | * - MAME license. |
9 | * See the COPYING file in the top-level directory. |
10 | * |
11 | * <random_info=mem_map> |
12 | * 00000000-029fffff linux (42MB) |
13 | * 02a00000-02dfffff fb (4MB, 153600B really used) |
14 | * 02e00000-02ffffff sound dma (2MB) |
15 | * 03000000-03ffffff MPEGDEC (?, 16MB) |
16 | * </random_info> |
17 | */ |
18 | |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <string.h> |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> |
24 | #include <fcntl.h> |
25 | #include <sys/ioctl.h> |
26 | #include <sys/mman.h> |
27 | #include <linux/fb.h> |
28 | #include <unistd.h> |
29 | |
30 | #include "../libpicofe/gp2x/soc.h" |
31 | #include "../libpicofe/gp2x/plat_gp2x.h" |
32 | #include "../libpicofe/gp2x/pollux_set.h" |
33 | #include "../common/emu.h" |
34 | #include "../common/arm_utils.h" |
35 | #include "plat.h" |
36 | |
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37 | #define FB_BUF_COUNT 4 |
38 | #define FB_MEM_SIZE (320*240*2 * FB_BUF_COUNT) |
39 | |
40 | static unsigned int fb_paddr[FB_BUF_COUNT]; |
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41 | static int fb_work_buf; |
42 | static int fbdev = -1; |
43 | |
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44 | |
45 | /* video stuff */ |
46 | static void pollux_video_flip(int buf_count) |
47 | { |
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48 | memregl[0x406C>>2] = memregl[0x446C>>2] = fb_paddr[fb_work_buf]; |
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49 | memregl[0x4058>>2] |= 0x10; |
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50 | memregl[0x4458>>2] |= 0x10; |
51 | |
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52 | fb_work_buf++; |
53 | if (fb_work_buf >= buf_count) |
54 | fb_work_buf = 0; |
55 | g_screen_ptr = gp2x_screens[fb_work_buf]; |
56 | } |
57 | |
58 | static void gp2x_video_flip_(void) |
59 | { |
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60 | pollux_video_flip(FB_BUF_COUNT); |
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61 | } |
62 | |
63 | /* doulblebuffered flip */ |
64 | static void gp2x_video_flip2_(void) |
65 | { |
66 | pollux_video_flip(2); |
67 | } |
68 | |
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69 | static void gp2x_video_changemode_ll_(int bpp, int is_pal) |
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70 | { |
71 | static int prev_bpp = 0; |
72 | int code = 0, bytes = 2; |
73 | int rot_cmd[2] = { 0, 0 }; |
74 | unsigned int r; |
75 | char buff[32]; |
76 | int ret; |
77 | |
78 | if (bpp == prev_bpp) |
79 | return; |
80 | prev_bpp = bpp; |
81 | |
82 | printf("changemode: %dbpp rot=%d\n", abs(bpp), bpp < 0); |
83 | |
84 | /* negative bpp means rotated mode */ |
85 | rot_cmd[0] = (bpp < 0) ? 6 : 5; |
86 | ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd); |
87 | if (ret < 0) |
88 | perror("rot ioctl failed"); |
89 | memregl[0x4004>>2] = (bpp < 0) ? 0x013f00ef : 0x00ef013f; |
90 | memregl[0x4000>>2] |= 1 << 3; |
91 | |
92 | /* the above ioctl resets LCD timings, so set them here */ |
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93 | snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", |
94 | is_pal ? "PAL" : "NTSC"); |
95 | pollux_set_fromenv(memregs, buff); |
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96 | |
97 | switch (abs(bpp)) |
98 | { |
99 | case 8: |
100 | code = 0x443a; |
101 | bytes = 1; |
102 | break; |
103 | |
104 | case 15: |
105 | case 16: |
106 | code = 0x4432; |
107 | bytes = 2; |
108 | break; |
109 | |
110 | default: |
111 | printf("unhandled bpp request: %d\n", abs(bpp)); |
112 | return; |
113 | } |
114 | |
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115 | // program both MLCs so that TV-out works |
116 | memregl[0x405c>>2] = memregl[0x445c>>2] = bytes; |
117 | memregl[0x4060>>2] = memregl[0x4460>>2] = |
118 | bytes * (bpp < 0 ? 240 : 320); |
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119 | |
120 | r = memregl[0x4058>>2]; |
121 | r = (r & 0xffff) | (code << 16) | 0x10; |
122 | memregl[0x4058>>2] = r; |
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123 | |
124 | r = memregl[0x4458>>2]; |
125 | r = (r & 0xffff) | (code << 16) | 0x10; |
126 | memregl[0x4458>>2] = r; |
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127 | } |
128 | |
129 | static void gp2x_video_setpalette_(int *pal, int len) |
130 | { |
131 | /* pollux palette is 16bpp only.. */ |
132 | int i; |
133 | for (i = 0; i < len; i++) |
134 | { |
135 | int c = pal[i]; |
136 | c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f); |
137 | memregl[0x4070>>2] = (i << 24) | c; |
138 | } |
139 | } |
140 | |
141 | static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H) |
142 | { |
143 | /* maybe a job for 3d hardware? */ |
144 | } |
145 | |
146 | static void gp2x_video_wait_vsync_(void) |
147 | { |
148 | while (!(memregl[0x308c>>2] & (1 << 10))) |
149 | spend_cycles(128); |
150 | memregl[0x308c>>2] |= 1 << 10; |
151 | } |
152 | |
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153 | void vid_pollux_init(void) |
154 | { |
155 | struct fb_fix_screeninfo fbfix; |
156 | int i, ret; |
157 | |
158 | fbdev = open("/dev/fb0", O_RDWR); |
159 | if (fbdev < 0) { |
160 | perror("can't open fbdev"); |
161 | exit(1); |
162 | } |
163 | |
164 | ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix); |
165 | if (ret == -1) { |
166 | perror("ioctl(fbdev) failed"); |
167 | exit(1); |
168 | } |
169 | |
170 | printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start); |
171 | fb_paddr[0] = fbfix.smem_start; |
172 | |
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173 | gp2x_screens[0] = mmap(0, FB_MEM_SIZE, PROT_READ|PROT_WRITE, |
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174 | MAP_SHARED, memdev, fb_paddr[0]); |
175 | if (gp2x_screens[0] == MAP_FAILED) |
176 | { |
177 | perror("mmap(gp2x_screens) failed"); |
178 | exit(1); |
179 | } |
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180 | memset(gp2x_screens[0], 0, FB_MEM_SIZE); |
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181 | |
182 | printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]); |
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183 | for (i = 1; i < FB_BUF_COUNT; i++) |
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184 | { |
185 | fb_paddr[i] = fb_paddr[i-1] + 320*240*2; |
186 | gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2; |
187 | printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]); |
188 | } |
189 | fb_work_buf = 0; |
190 | g_screen_ptr = gp2x_screens[0]; |
191 | |
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192 | gp2x_video_flip = gp2x_video_flip_; |
193 | gp2x_video_flip2 = gp2x_video_flip2_; |
194 | gp2x_video_changemode_ll = gp2x_video_changemode_ll_; |
195 | gp2x_video_setpalette = gp2x_video_setpalette_; |
196 | gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_; |
197 | gp2x_video_wait_vsync = gp2x_video_wait_vsync_; |
198 | } |
199 | |
200 | void vid_pollux_finish(void) |
201 | { |
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202 | memset(gp2x_screens[0], 0, FB_MEM_SIZE); |
203 | munmap(gp2x_screens[0], FB_MEM_SIZE); |
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204 | close(fbdev); |
205 | fbdev = -1; |
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206 | } |