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;
22 static int battdev = -1;
24 extern void *gp2x_screens[4];
26 #define fb_buf_count 4
27 static unsigned int fb_paddr[fb_buf_count];
28 static int fb_work_buf;
29 static int fbdev = -1;
31 static char cpuclk_was_changed = 0;
32 static unsigned short memtimex_old[2];
33 static unsigned int pllsetreg0;
34 static int last_pal_setting = 0;
38 static void pollux_video_flip(int buf_count)
40 memregl[0x406C>>2] = fb_paddr[fb_work_buf];
41 memregl[0x4058>>2] |= 0x10;
43 if (fb_work_buf >= buf_count)
45 g_screen_ptr = gp2x_screens[fb_work_buf];
48 static void gp2x_video_flip_(void)
50 pollux_video_flip(fb_buf_count);
53 /* doulblebuffered flip */
54 static void gp2x_video_flip2_(void)
59 static void gp2x_video_changemode_ll_(int bpp)
61 static int prev_bpp = 0;
62 int code = 0, bytes = 2;
63 int rot_cmd[2] = { 0, 0 };
71 printf("changemode: %dbpp rot=%d\n", abs(bpp), bpp < 0);
73 /* negative bpp means rotated mode */
74 rot_cmd[0] = (bpp < 0) ? 6 : 5;
75 ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd);
77 perror("rot ioctl failed");
78 memregl[0x4004>>2] = (bpp < 0) ? 0x013f00ef : 0x00ef013f;
79 memregl[0x4000>>2] |= 1 << 3;
81 /* the above ioctl resets LCD timings, so set them here */
82 set_lcd_custom_rate(last_pal_setting);
98 printf("unhandled bpp request: %d\n", abs(bpp));
102 memregl[0x405c>>2] = bytes;
103 memregl[0x4060>>2] = bytes * (bpp < 0 ? 240 : 320);
105 r = memregl[0x4058>>2];
106 r = (r & 0xffff) | (code << 16) | 0x10;
107 memregl[0x4058>>2] = r;
110 static void gp2x_video_setpalette_(int *pal, int len)
112 /* pollux palette is 16bpp only.. */
114 for (i = 0; i < len; i++)
117 c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f);
118 memregl[0x4070>>2] = (i << 24) | c;
122 static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
124 /* maybe a job for 3d hardware? */
127 static void gp2x_video_wait_vsync_(void)
129 while (!(memregl[0x308c>>2] & (1 << 10)));
131 memregl[0x308c>>2] |= 1 << 10;
135 static void gp2x_set_cpuclk_(unsigned int mhz)
138 snprintf(buff, sizeof(buff), "cpuclk=%u", mhz);
139 pollux_set(memregs, buff);
141 cpuclk_was_changed = 1;
145 static void pollux_set_fromenv(const char *env_var)
147 const char *set_string;
148 set_string = getenv(env_var);
150 pollux_set(memregs, set_string);
152 printf("env var %s not defined.\n", env_var);
156 static void set_ram_timings_(void)
158 pollux_set_fromenv("POLLUX_RAM_TIMINGS");
161 static void unset_ram_timings_(void)
165 memregs[0x14802>>1] = memtimex_old[0];
166 memregs[0x14804>>1] = memtimex_old[1] | 0x8000;
168 for (i = 0; i < 0x100000; i++)
169 if (!(memregs[0x14804>>1] & 0x8000))
172 printf("RAM timings reset to startup values.\n");
176 static void set_lcd_custom_rate_(int is_pal)
180 snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", is_pal ? "PAL" : "NTSC");
181 pollux_set_fromenv(buff);
182 last_pal_setting = is_pal;
185 static void unset_lcd_custom_rate_(void)
189 static void set_lcd_gamma_(int g100, int A_SNs_curve)
191 /* hm, the LCD possibly can do it (but not POLLUX) */
194 static int gp2x_read_battery_(void)
196 unsigned short magic_val = 0;
200 if (read(battdev, &magic_val, sizeof(magic_val)) != sizeof(magic_val))
211 #define TIMER_BASE3 0x1980
212 #define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2]
214 unsigned int gp2x_get_ticks_us_(void)
216 TIMER_REG(0x08) = 0x4b; /* run timer, latch value */
220 unsigned int gp2x_get_ticks_ms_(void)
222 /* approximate /= 1000 */
223 unsigned long long v64;
224 v64 = (unsigned long long)gp2x_get_ticks_us_() * 4294968;
228 static void timer_cleanup(void)
230 TIMER_REG(0x40) = 0x0c; /* be sure clocks are on */
231 TIMER_REG(0x08) = 0x23; /* stop the timer, clear irq in case it's pending */
232 TIMER_REG(0x00) = 0; /* clear counter */
233 TIMER_REG(0x40) = 0; /* clocks off */
234 TIMER_REG(0x44) = 0; /* dividers back to default */
237 void pollux_init(void)
239 struct fb_fix_screeninfo fbfix;
242 memdev = open("/dev/mem", O_RDWR);
244 perror("open(/dev/mem) failed");
248 memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
249 if (memregs == MAP_FAILED) {
250 perror("mmap(memregs) failed");
253 memregl = (volatile void *)memregs;
255 fbdev = open("/dev/fb0", O_RDWR);
257 perror("can't open fbdev");
261 ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
263 perror("ioctl(fbdev) failed");
267 printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
268 fb_paddr[0] = fbfix.smem_start;
270 gp2x_screens[0] = mmap(0, 320*240*2*fb_buf_count, PROT_READ|PROT_WRITE,
271 MAP_SHARED, memdev, fb_paddr[0]);
272 if (gp2x_screens[0] == MAP_FAILED)
274 perror("mmap(gp2x_screens) failed");
277 memset(gp2x_screens[0], 0, 320*240*2*fb_buf_count);
279 printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]);
280 for (i = 1; i < fb_buf_count; i++)
282 fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
283 gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2;
284 printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]);
287 g_screen_ptr = gp2x_screens[0];
289 battdev = open("/dev/pollux_batt", O_RDONLY);
291 perror("Warning: could't open pollux_batt");
294 if (TIMER_REG(0x08) & 8)
297 TIMER_REG(0x44) = 0x922; /* using PLL1, divider value 147 */
298 TIMER_REG(0x40) = 0x0c; /* clocks on */
299 TIMER_REG(0x08) = 0x6b; /* run timer, clear irq, latch value */
301 pllsetreg0 = memregl[0xf004>>2];
302 memtimex_old[0] = memregs[0x14802>>1];
303 memtimex_old[1] = memregs[0x14804>>1];
305 gp2x_video_flip = gp2x_video_flip_;
306 gp2x_video_flip2 = gp2x_video_flip2_;
307 gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
308 gp2x_video_setpalette = gp2x_video_setpalette_;
309 gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
310 gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
312 gp2x_set_cpuclk = gp2x_set_cpuclk_;
314 set_lcd_custom_rate = set_lcd_custom_rate_;
315 unset_lcd_custom_rate = unset_lcd_custom_rate_;
316 set_lcd_gamma = set_lcd_gamma_;
318 set_ram_timings = set_ram_timings_;
319 unset_ram_timings = unset_ram_timings_;
320 gp2x_read_battery = gp2x_read_battery_;
322 gp2x_get_ticks_ms = gp2x_get_ticks_ms_;
323 gp2x_get_ticks_us = gp2x_get_ticks_us_;
326 void pollux_finish(void)
328 /* switch to default fb mem, turn portrait off */
329 memregl[0x406C>>2] = fb_paddr[0];
330 memregl[0x4058>>2] |= 0x10;
333 gp2x_video_changemode_ll_(16);
334 unset_ram_timings_();
335 if (cpuclk_was_changed) {
336 memregl[0xf004>>2] = pllsetreg0;
337 memregl[0xf07c>>2] |= 0x8000;
340 munmap((void *)memregs, 0x20000);