11 #include "soc_mmsp2.h"
13 #include "../common/emu.h"
14 #include "../common/arm_utils.h"
16 volatile unsigned short *gp2x_memregs;
17 volatile unsigned long *gp2x_memregl;
18 extern void *gp2x_screens[4];
19 static int screensel = 0;
21 int memdev = 0; /* used by code940 */
22 static int touchdev = -1;
23 static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
25 #define FRAMEBUFF_SIZE 0x30000
26 #define FRAMEBUFF_WHOLESIZE (FRAMEBUFF_SIZE*4) // 320*240*2 + some more
27 #define FRAMEBUFF_ADDR0 (0x4000000 - FRAMEBUFF_WHOLESIZE)
28 #define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0 + FRAMEBUFF_SIZE)
29 #define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1 + FRAMEBUFF_SIZE)
30 #define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2 + FRAMEBUFF_SIZE)
32 static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };
33 static int gp2x_screenaddrs_use[4];
34 static unsigned short gp2x_screenaddr_old[4];
38 void gp2x_video_flip(void)
40 unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];
41 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);
43 gp2x_memregs[0x2910>>1] = msw;
44 gp2x_memregs[0x2914>>1] = msw;
45 gp2x_memregs[0x290E>>1] = lsw;
46 gp2x_memregs[0x2912>>1] = lsw;
48 // jump to other buffer:
49 g_screen_ptr = gp2x_screens[++screensel&3];
52 /* doulblebuffered flip */
53 void gp2x_video_flip2(void)
55 unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);
57 gp2x_memregs[0x2910>>1] = msw;
58 gp2x_memregs[0x2914>>1] = msw;
59 gp2x_memregs[0x290E>>1] = 0;
60 gp2x_memregs[0x2912>>1] = 0;
62 // jump to other buffer:
63 g_screen_ptr = gp2x_screens[++screensel&1];
66 void gp2x_video_changemode_ll(int bpp)
68 gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/
69 gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/
72 void gp2x_video_setpalette(int *pal, int len)
74 unsigned short *g = (unsigned short *)pal;
75 volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];
77 gp2x_memregs[0x2958>>1] = 0;
84 // TV Compatible function //
85 void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
87 float escalaw, escalah;
88 int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;
92 gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;
93 gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;
94 gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;
95 gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;
97 escalaw = 1024.0; // RGB Horiz LCD
98 escalah = 320.0; // RGB Vert LCD
100 if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out
102 escalaw=489.0; // RGB Horiz TV (PAL, NTSC)
103 if (gp2x_memregs[0x2818>>1] == 287) //PAL
104 escalah=274.0; // RGB Vert TV PAL
105 else if (gp2x_memregs[0x2818>>1] == 239) //NTSC
106 escalah=331.0; // RGB Vert TV NTSC
110 scalw = (unsigned short)((float)escalaw *(W/320.0));
111 /* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */
112 if (H != 240 && W == 320) scalw--;
113 gp2x_memregs[0x2906>>1]=scalw;
115 gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));
118 void gp2x_video_wait_vsync(void)
120 unsigned short v = gp2x_memregs[0x1182>>1];
121 while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10))
126 void pause940(int yes)
129 gp2x_memregs[0x0904>>1] &= 0xFFFE;
131 gp2x_memregs[0x0904>>1] |= 1;
134 void reset940(int yes, int bank)
136 gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
140 /* these are not quite MMSP2 related,
141 * more to GP2X F100/F200 consoles themselves. */
142 typedef struct ucb1x00_ts_event
144 unsigned short pressure;
148 struct timeval stamp;
151 int gp2x_touchpad_read(int *x, int *y)
153 UCB1X00_TS_EVENT event;
154 static int zero_seen = 0;
157 if (touchdev < 0) return -1;
159 retval = read(touchdev, &event, sizeof(event));
161 perror("touch read failed");
164 // this is to ignore the messed-up 4.1.x driver
165 if (event.pressure == 0) zero_seen = 1;
167 if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
168 if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
169 // printf("read %i %i %i\n", event.pressure, *x, *y);
171 return zero_seen ? event.pressure : 0;
174 static void proc_set(const char *path, const char *val)
179 f = fopen(path, "w");
181 printf("failed to open: %s\n", path);
188 printf("\"%s\" is set to: ", path);
189 f = fopen(path, "r");
191 printf("(open failed)\n");
195 fgets(tmp, sizeof(tmp), f);
201 void mmsp2_init(void)
205 memdev = open("/dev/mem", O_RDWR);
208 perror("open(\"/dev/mem\")");
212 gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
213 if (gp2x_memregs == MAP_FAILED)
215 perror("mmap(memregs)");
218 gp2x_memregl = (unsigned long *) gp2x_memregs;
220 gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers
222 gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED,
223 memdev, gp2x_screenaddrs[0]);
224 if (gp2x_screens[0] == MAP_FAILED)
226 perror("mmap(g_screen_ptr)");
229 printf("framebuffers:\n");
230 printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]);
231 for (i = 1; i < 4; i++)
233 gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE;
234 printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]);
237 g_screen_ptr = gp2x_screens[0];
240 gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];
241 gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];
242 gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];
243 gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];
245 memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));
248 touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
250 FILE *pcf = fopen("/etc/pointercal", "r");
252 fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
253 &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
256 printf("found touchscreen/wm97xx\n");
259 /* disable Linux read-ahead */
260 proc_set("/proc/sys/vm/max-readahead", "0\n");
261 proc_set("/proc/sys/vm/min-readahead", "0\n");
264 void mmsp2_finish(void)
269 gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];
270 gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];
271 gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];
272 gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];
274 munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);
275 munmap((void *)gp2x_memregs, 0x10000);