10 #include <sys/ioctl.h>
14 #include "plat_gp2x.h"
15 #include "../common/emu.h"
16 #include "../common/arm_utils.h"
17 #include "pollux_set.h"
19 static volatile unsigned short *memregs;
20 static volatile unsigned long *memregl;
21 static int memdev = -1;
23 extern void *gp2x_screens[4];
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;
30 static char cpuclk_was_changed = 0;
31 static unsigned short memtimex_old[2];
32 static unsigned int pllsetreg0;
36 static void pollux_video_flip(int buf_count)
38 memregl[0x406C>>2] = fb_paddr[fb_work_buf];
39 memregl[0x4058>>2] |= 0x10;
41 if (fb_work_buf >= buf_count)
43 g_screen_ptr = gp2x_screens[fb_work_buf];
46 static void gp2x_video_flip_(void)
48 pollux_video_flip(fb_buf_count);
51 /* doulblebuffered flip */
52 static void gp2x_video_flip2_(void)
57 static void gp2x_video_changemode_ll_(int bpp)
59 int code = 0, bytes = 2;
75 printf("unhandled bpp request: %d\n", bpp);
79 memregl[0x405c>>2] = bytes;
80 memregl[0x4060>>2] = bytes * 320;
82 r = memregl[0x4058>>2];
83 r = (r & 0xffff) | (code << 16) | 0x10;
84 memregl[0x4058>>2] = r;
87 static void gp2x_video_setpalette_(int *pal, int len)
89 /* pollux palette is 16bpp only.. */
91 for (i = 0; i < len; i++)
94 c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f);
95 memregl[0x4070>>2] = (i << 24) | c;
99 static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
101 /* maybe a job for 3d hardware? */
104 static void gp2x_video_wait_vsync_(void)
106 while (!(memregl[0x308c>>2] & (1 << 10)));
108 memregl[0x308c>>2] |= 1 << 10;
112 static void gp2x_set_cpuclk_(unsigned int mhz)
115 snprintf(buff, sizeof(buff), "cpuclk=%u", mhz);
116 pollux_set(memregs, buff);
118 cpuclk_was_changed = 1;
122 static void pollux_set_fromenv(const char *env_var)
124 const char *set_string;
125 set_string = getenv(env_var);
127 pollux_set(memregs, set_string);
129 printf("env var %s not defined.\n", env_var);
133 static void set_ram_timings_(void)
135 pollux_set_fromenv("POLLUX_RAM_TIMINGS");
138 static void unset_ram_timings_(void)
142 memregs[0x14802>>1] = memtimex_old[0];
143 memregs[0x14804>>1] = memtimex_old[1] | 0x8000;
145 for (i = 0; i < 0x100000; i++)
146 if (!(memregs[0x14804>>1] & 0x8000))
149 printf("RAM timings reset to startup values.\n");
153 static void set_lcd_custom_rate_(int is_pal)
157 snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", is_pal ? "PAL" : "NTSC");
158 pollux_set_fromenv(buff);
161 static void unset_lcd_custom_rate_(void)
165 static void set_lcd_gamma_(int g100, int A_SNs_curve)
167 /* hm, the LCD possibly can do it (but not POLLUX) */
170 void pollux_init(void)
172 struct fb_fix_screeninfo fbfix;
175 memdev = open("/dev/mem", O_RDWR);
177 perror("open(/dev/mem) failed");
181 memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
182 if (memregs == MAP_FAILED) {
183 perror("mmap(memregs) failed");
186 memregl = (volatile void *)memregs;
188 fbdev = open("/dev/fb0", O_RDWR);
190 perror("can't open fbdev");
194 ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
196 perror("ioctl(fbdev) failed");
200 printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
201 fb_paddr[0] = fbfix.smem_start;
203 gp2x_screens[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
204 MAP_SHARED, memdev, fb_paddr[0]);
205 if (gp2x_screens[0] == MAP_FAILED)
207 perror("mmap(gp2x_screens) failed");
210 memset(gp2x_screens[0], 0, 320*240*2*fb_buf_count);
212 printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]);
213 for (i = 1; i < fb_buf_count; i++)
215 fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
216 gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2;
217 printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]);
220 g_screen_ptr = gp2x_screens[0];
222 pllsetreg0 = memregl[0xf004];
223 memtimex_old[0] = memregs[0x14802>>1];
224 memtimex_old[1] = memregs[0x14804>>1];
226 gp2x_video_flip = gp2x_video_flip_;
227 gp2x_video_flip2 = gp2x_video_flip2_;
228 gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
229 gp2x_video_setpalette = gp2x_video_setpalette_;
230 gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
231 gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
233 gp2x_set_cpuclk = gp2x_set_cpuclk_;
235 set_lcd_custom_rate = set_lcd_custom_rate_;
236 unset_lcd_custom_rate = unset_lcd_custom_rate_;
237 set_lcd_gamma = set_lcd_gamma_;
239 set_ram_timings = set_ram_timings_;
240 unset_ram_timings = unset_ram_timings_;
243 void pollux_finish(void)
245 /* switch to default fb mem, turn portrait off */
246 memregl[0x406C>>2] = fb_paddr[0];
247 memregl[0x4058>>2] |= 0x10;
248 // wiz_lcd_set_portrait(0);
251 gp2x_video_changemode_ll_(16);
252 unset_ram_timings_();
253 if (cpuclk_was_changed) {
254 memregl[0xf004>>2] = pllsetreg0;
255 memregl[0xf07c>>2] |= 0x8000;
258 munmap((void *)memregs, 0x20000);