prepare for source release, relicense

[ginge.git] / common / wiz_video.c

diff --git a/common/wiz_video.c b/common/wiz_video.c
index 4395683..4bfc7c5 100644 (file)
--- a/common/wiz_video.c
+++ b/common/wiz_video.c
@@ -1,3 +1,9 @@
+/*
+ * GINGE - GINGE Is Not Gp2x Emulator
+ * (C) notaz, 2010-2011
+ *
+ * This work is licensed under the MAME license, see COPYING file for details.
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -8,13 +14,16 @@
 #include <sys/mman.h>
 #include <unistd.h>
 #include <linux/fb.h>
+#include "warm/warm.h"
 
 static volatile unsigned short *memregs;
-static volatile unsigned long  *memregl;
-static int memdev = -1;
+static volatile unsigned int   *memregl;
+int probably_caanoo;
+int memdev = -1;
 
 #define FB_BUF_COUNT 4
 static unsigned int fb_paddr[FB_BUF_COUNT];
+static int fb_buf_count = FB_BUF_COUNT;
 static int fb_work_buf;
 static int fbdev = -1;
 
@@ -28,12 +37,12 @@ static void vout_gp2x_flip(void)
        memregl[0x4058>>2] |= 0x10;
 
        fb_work_buf++;
-       if (fb_work_buf >= FB_BUF_COUNT)
+       if (fb_work_buf >= fb_buf_count)
                fb_work_buf = 0;
        g_screen_ptr = gp2x_screens[fb_work_buf];
 }
 
-static int vout_gp2x_init(void)
+static int vout_gp2x_init(int no_dblbuf)
 {
        struct fb_fix_screeninfo fbfix;
        int i, ret;
@@ -65,6 +74,8 @@ static int vout_gp2x_init(void)
 
        printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
        fb_paddr[0] = fbfix.smem_start;
+       probably_caanoo = fb_paddr[0] >= 0x4000000;
+       printf("looking like Caanoo? %s.\n", probably_caanoo ? "yes" : "no");
 
        gp2x_screens[0] = mmap(0, 320*240*2*FB_BUF_COUNT, PROT_READ|PROT_WRITE,
                        MAP_SHARED, memdev, fb_paddr[0]);
@@ -75,26 +86,111 @@ static int vout_gp2x_init(void)
        }
        memset(gp2x_screens[0], 0, 320*240*2*FB_BUF_COUNT);
 
-       printf("  %p -> %08x\n", gp2x_screens[0], fb_paddr[0]);
+       if (!no_dblbuf) {
+               warm_init();
+               ret = warm_change_cb_range(WCB_B_BIT, 1, gp2x_screens[0], 320*240*2*FB_BUF_COUNT);
+               if (ret != 0)
+                       fprintf(stderr, "could not make fb buferable.\n");
+       }
+
+       // printf("  %p -> %08x\n", gp2x_screens[0], fb_paddr[0]);
        for (i = 1; i < FB_BUF_COUNT; i++)
        {
                fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
                gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2;
-               printf("  %p -> %08x\n", gp2x_screens[i], fb_paddr[i]);
+               // printf("  %p -> %08x\n", gp2x_screens[i], fb_paddr[i]);
        }
        fb_work_buf = 0;
        g_screen_ptr = gp2x_screens[0];
 
+       if (no_dblbuf)
+               fb_buf_count = 1;
+
        return 0;
 }
 
+static void vout_gp2x_set_mode(int bpp, int rot)
+{
+       int rot_cmd[2] = { 0, 0 };
+       int code = 0, bytes = 2;
+       unsigned int r;
+       int ret;
+
+       if (probably_caanoo)
+               rot = 0;
+
+       rot_cmd[0] = rot ? 6 : 5;
+       ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd);
+       if (ret < 0)
+               perror("rot ioctl failed");
+
+       memregl[0x4004>>2] = rot ? 0x013f00ef : 0x00ef013f;
+       memregl[0x4000>>2] |= 1 << 3;
+
+       switch (bpp)
+       {
+               case 8:
+                       code = 0x443a;
+                       bytes = 1;
+                       break;
+
+               case 15:
+               case 16:
+                       code = 0x4432;
+                       bytes = 2;
+                       break;
+
+               default:
+                       fprintf(stderr, "unhandled bpp request: %d\n", abs(bpp));
+                       return;
+       }
+
+       memregl[0x405c>>2] = bytes;
+       memregl[0x4060>>2] = bytes * (rot ? 240 : 320);
+
+       r = memregl[0x4058>>2];
+       r = (r & 0xffff) | (code << 16) | 0x10;
+       memregl[0x4058>>2] = r;
+}
+
+static void vout_gp2x_set_palette16(unsigned short *pal, int len)
+{
+       int i;
+       for (i = 0; i < len; i++)
+               memregl[0x4070>>2] = (i << 24) | pal[i];
+}
+
+static void vout_gp2x_set_palette32(unsigned int *pal, int len)
+{
+       /* pollux palette is 16bpp only.. */
+       int i;
+       for (i = 0; i < len; i++)
+       {
+               int c = pal[i];
+               c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f);
+               memregl[0x4070>>2] = (i << 24) | c;
+       }
+}
+
 void vout_gp2x_finish(void)
 {
-       memregl[0x406C>>2] = fb_paddr[0];
-       memregl[0x4058>>2] |= 0x10;
-       close(fbdev);
+       if (memregl != NULL) {
+               if (memregl[0x4058>>2] & 0x10)
+                       usleep(100000);
+               if (memregl[0x4058>>2] & 0x10)
+                       printf("MLCCONTROL1 dirty? %08x %08x\n",
+                               memregl[0x406C>>2], memregl[0x4058>>2]);
+
+               memregl[0x406C>>2] = fb_paddr[0];
+               memregl[0x4058>>2] |= 0x10;
+               munmap((void *)memregs, 0x20000);
+               memregs = NULL;
+               memregl = NULL;
+       }
 
-       munmap((void *)memregs, 0x20000);
+       close(fbdev);
        close(memdev);
+
+       warm_finish();
 }